Release 0.5.2

* Retain last read page when using the webtoon mode, see issue #453

* #738 inorichi's request change to webtoonreader pull request

* #738 per inorichi recycler could be null at the point
scrollToLastPageRead was called, moved to below the check in the view
had been initialized.

app/build.gradle

@@ -38,12 +38,13 @@ android {
         minSdkVersion 16
         targetSdkVersion 25
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
-        versionCode 20
-        versionName "0.5.0"
+        versionCode 22
+        versionName "0.5.2"
 
         buildConfigField "String", "COMMIT_COUNT", "\"${getCommitCount()}\""
         buildConfigField "String", "COMMIT_SHA", "\"${getGitSha()}\""
         buildConfigField "String", "BUILD_TIME", "\"${getBuildTime()}\""
+        buildConfigField "boolean", "INCLUDE_UPDATER", "false"
 
         vectorDrawables.useSupportLibrary = true
 
@@ -70,9 +71,11 @@ android {
         standard {
             buildConfigField "boolean", "INCLUDE_UPDATER", "true"
         }
-
         fdroid {
-            buildConfigField "boolean", "INCLUDE_UPDATER", "false"
+        }
+        dev {
+            minSdkVersion 21
+            resConfigs "en", "xxhdpi"
         }
     }
 
@@ -98,11 +101,11 @@ android {
 dependencies {
 
     // Modified dependencies
-    compile 'com.github.inorichi:subsampling-scale-image-view:4255750'
+    compile 'com.github.inorichi:subsampling-scale-image-view:01e5385'
     compile 'com.github.inorichi:junrar-android:634c1f5'
 
     // Android support library
-    final support_library_version = '25.2.0'
+    final support_library_version = '25.3.1'
     compile "com.android.support:support-v4:$support_library_version"
     compile "com.android.support:appcompat-v7:$support_library_version"
     compile "com.android.support:cardview-v7:$support_library_version"
@@ -111,13 +114,13 @@ dependencies {
     compile "com.android.support:support-annotations:$support_library_version"
     compile "com.android.support:customtabs:$support_library_version"
 
-    compile 'com.android.support.constraint:constraint-layout:1.0.0'
+    compile 'com.android.support.constraint:constraint-layout:1.0.2'
 
     compile 'com.android.support:multidex:1.0.1'
 
     // ReactiveX
     compile 'io.reactivex:rxandroid:1.2.1'
-    compile 'io.reactivex:rxjava:1.2.6'
+    compile 'io.reactivex:rxjava:1.2.9'
     compile 'com.jakewharton.rxrelay:rxrelay:1.2.0'
     compile 'com.f2prateek.rx.preferences:rx-preferences:1.0.2'
     compile 'com.github.pwittchen:reactivenetwork:0.7.0'
@@ -150,7 +153,7 @@ dependencies {
     compile 'org.jsoup:jsoup:1.10.2'
 
     // Job scheduling
-    compile 'com.evernote:android-job:1.1.6'
+    compile 'com.evernote:android-job:1.1.8'
     compile 'com.google.android.gms:play-services-gcm:10.2.0'
 
     // Changelog
@@ -172,7 +175,7 @@ dependencies {
     compile 'com.github.bumptech.glide:glide:3.7.0'
     compile 'com.github.bumptech.glide:okhttp3-integration:1.4.0@aar'
     // Transformations
-    compile 'jp.wasabeef:glide-transformations:2.0.1'
+    compile 'jp.wasabeef:glide-transformations:2.0.2'
 
     // Logging
     compile 'com.jakewharton.timber:timber:4.5.1'
@@ -190,7 +193,7 @@ dependencies {
     compile 'com.github.inorichi:FlexibleAdapter:93985fe' // v4.2.0 to be removed
     compile 'com.nononsenseapps:filepicker:2.5.2'
     compile 'com.github.amulyakhare:TextDrawable:558677e'
-    compile 'com.afollestad.material-dialogs:core:0.9.3.0'
+    compile 'com.afollestad.material-dialogs:core:0.9.4.2'
     compile 'net.xpece.android:support-preference:1.2.5'
     compile 'me.zhanghai.android.systemuihelper:library:1.0.0'
     compile 'de.hdodenhof:circleimageview:2.1.0'
@@ -209,7 +212,7 @@ dependencies {
 }
 
 buildscript {
-    ext.kotlin_version = '1.0.6'
+    ext.kotlin_version = '1.1.1'
     repositories {
         mavenCentral()
     }
@@ -221,3 +224,50 @@ buildscript {
 repositories {
     mavenCentral()
 }
+
+// Workaround to force a support lib version
+configurations.all {
+    resolutionStrategy.eachDependency { details ->
+        def requested = details.requested
+        if (requested.group == 'com.android.support') {
+            if (!requested.name.startsWith("multidex")) {
+                details.useVersion '25.3.1'
+            }
+        }
+    }
+}
+
+// add support for placeholders in resource files
+//https://code.google.com/p/android/issues/detail?id=69224
+def replacePlaceholdersInFile(basePath, fileName, placeholders) {
+    def file = new File(basePath, fileName);
+
+    if (!file.exists()) {
+        logger.quiet("Unable to replace placeholders in " + file.toString() + ". File cannot be found.")
+        return;
+    }
+
+    logger.debug("Replacing placeholders in " + file.toString())
+    logger.debug("Placeholders: " + placeholders.toString())
+
+    def content = file.getText('UTF-8')
+
+    placeholders.each { entry ->
+        content = content.replaceAll("\\\$\\{${entry.key}\\}", entry.value)
+    }
+
+    file.write(content, 'UTF-8')
+}
+
+afterEvaluate {
+    android.applicationVariants.all { variant ->
+        variant.outputs.each { output ->
+            output.processResources.doFirst {
+                // prepare placeholder map from manifestPlaceholders including applicationId placeholder
+                def placeholders = variant.mergedFlavor.manifestPlaceholders + [applicationId: variant.applicationId]
+
+                replacePlaceholdersInFile(resDir, 'xml-v25/shortcuts.xml', placeholders)
+            }
+        }
+    }
+}

app/src/main/AndroidManifest.xml

@@ -19,6 +19,7 @@
         android:allowBackup="true"
         android:hardwareAccelerated="true"
         android:icon="@mipmap/ic_launcher"
+        android:roundIcon="@mipmap/ic_launcher_round"
         android:label="@string/app_name"
         android:largeHeap="true"
         android:theme="@style/Theme.Tachiyomi">
@@ -28,6 +29,8 @@
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+            <meta-data android:name="android.app.shortcuts"
+                android:resource="@xml/shortcuts"/>
         </activity>
         <activity
             android:name=".ui.manga.MangaActivity"
@@ -45,7 +48,7 @@
             android:label="@string/label_categories"
             android:parentActivityName=".ui.main.MainActivity" />
         <activity
-            android:name=".ui.setting.SettingsDownloadsFragment$CustomLayoutPickerActivity"
+            android:name=".widget.CustomLayoutPickerActivity"
             android:label="@string/app_name"
             android:theme="@style/FilePickerTheme" />
         <activity
@@ -102,6 +105,14 @@
             android:name=".data.updater.UpdateDownloaderService"
             android:exported="false" />
 
+        <service
+            android:name=".data.backup.BackupCreateService"
+            android:exported="false"/>
+
+        <service
+            android:name=".data.backup.BackupRestoreService"
+            android:exported="false"/>
+
         <meta-data
             android:name="eu.kanade.tachiyomi.data.glide.AppGlideModule"
             android:value="GlideModule" />

app/src/main/java/eu/kanade/tachiyomi/App.kt

@@ -5,6 +5,7 @@ import android.content.Context
 import android.content.res.Configuration
 import android.support.multidex.MultiDex
 import com.evernote.android.job.JobManager
+import eu.kanade.tachiyomi.data.backup.BackupCreatorJob
 import eu.kanade.tachiyomi.data.library.LibraryUpdateJob
 import eu.kanade.tachiyomi.data.updater.UpdateCheckerJob
 import eu.kanade.tachiyomi.util.LocaleHelper
@@ -58,6 +59,7 @@ open class App : Application() {
             when (tag) {
                 LibraryUpdateJob.TAG -> LibraryUpdateJob()
                 UpdateCheckerJob.TAG -> UpdateCheckerJob()
+                BackupCreatorJob.TAG -> BackupCreatorJob()
                 else -> null
             }
         }

app/src/main/java/eu/kanade/tachiyomi/Constants.kt

@@ -1,10 +1,10 @@
 package eu.kanade.tachiyomi
 
 object Constants {
-    const val NOTIFICATION_LIBRARY_ID = 1
-    const val NOTIFICATION_UPDATER_ID = 2
-    const val NOTIFICATION_DOWNLOAD_CHAPTER_ID = 3
-    const val NOTIFICATION_DOWNLOAD_CHAPTER_ERROR_ID = 4
-    const val NOTIFICATION_DOWNLOAD_IMAGE_ID = 5
-
+    const val NOTIFICATION_LIBRARY_PROGRESS_ID = 1
+    const val NOTIFICATION_LIBRARY_RESULT_ID = 2
+    const val NOTIFICATION_UPDATER_ID = 3
+    const val NOTIFICATION_DOWNLOAD_CHAPTER_ID = 4
+    const val NOTIFICATION_DOWNLOAD_CHAPTER_ERROR_ID = 5
+    const val NOTIFICATION_DOWNLOAD_IMAGE_ID = 6
 }

app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupCreateService.kt

@@ -0,0 +1,171 @@
+package eu.kanade.tachiyomi.data.backup
+
+import android.app.IntentService
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import com.github.salomonbrys.kotson.set
+import com.google.gson.JsonArray
+import com.google.gson.JsonObject
+import com.hippo.unifile.UniFile
+import eu.kanade.tachiyomi.data.backup.models.Backup
+import eu.kanade.tachiyomi.data.backup.models.Backup.CATEGORIES
+import eu.kanade.tachiyomi.data.backup.models.Backup.MANGAS
+import eu.kanade.tachiyomi.data.backup.models.Backup.VERSION
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.ui.setting.SettingsBackupFragment
+import eu.kanade.tachiyomi.util.AndroidComponentUtil
+import eu.kanade.tachiyomi.util.sendLocalBroadcast
+import timber.log.Timber
+import eu.kanade.tachiyomi.BuildConfig.APPLICATION_ID as ID
+
+/**
+ * [IntentService] used to backup [Manga] information to [JsonArray]
+ */
+class BackupCreateService : IntentService(NAME) {
+
+    companion object {
+        // Name of class
+        private const val NAME = "BackupCreateService"
+
+        // Uri as string
+        private const val EXTRA_URI = "$ID.$NAME.EXTRA_URI"
+        // Backup called from job
+        private const val EXTRA_IS_JOB = "$ID.$NAME.EXTRA_IS_JOB"
+        // Options for backup
+        private const val EXTRA_FLAGS = "$ID.$NAME.EXTRA_FLAGS"
+
+        // Filter options
+        internal const val BACKUP_CATEGORY = 0x1
+        internal const val BACKUP_CATEGORY_MASK = 0x1
+        internal const val BACKUP_CHAPTER = 0x2
+        internal const val BACKUP_CHAPTER_MASK = 0x2
+        internal const val BACKUP_HISTORY = 0x4
+        internal const val BACKUP_HISTORY_MASK = 0x4
+        internal const val BACKUP_TRACK = 0x8
+        internal const val BACKUP_TRACK_MASK = 0x8
+        internal const val BACKUP_ALL = 0xF
+
+        /**
+         * Make a backup from library
+         *
+         * @param context context of application
+         * @param path path of Uri
+         * @param flags determines what to backup
+         * @param isJob backup called from job
+         */
+        fun makeBackup(context: Context, path: String, flags: Int, isJob: Boolean = false) {
+            val intent = Intent(context, BackupCreateService::class.java).apply {
+                putExtra(EXTRA_URI, path)
+                putExtra(EXTRA_IS_JOB, isJob)
+                putExtra(EXTRA_FLAGS, flags)
+            }
+            context.startService(intent)
+        }
+
+        fun isRunning(context: Context): Boolean {
+            return AndroidComponentUtil.isServiceRunning(context, BackupCreateService::class.java)
+        }
+    }
+
+    private val backupManager by lazy { BackupManager(this) }
+
+    override fun onHandleIntent(intent: Intent?) {
+        if (intent == null) return
+
+        // Get values
+        val uri = intent.getStringExtra(EXTRA_URI)
+        val isJob = intent.getBooleanExtra(EXTRA_IS_JOB, false)
+        val flags = intent.getIntExtra(EXTRA_FLAGS, 0)
+        // Create backup
+        createBackupFromApp(Uri.parse(uri), flags, isJob)
+    }
+
+    /**
+     * Create backup Json file from database
+     *
+     * @param uri path of Uri
+     * @param isJob backup called from job
+     */
+    fun createBackupFromApp(uri: Uri, flags: Int, isJob: Boolean) {
+        // Create root object
+        val root = JsonObject()
+
+        // Create information object
+        val information = JsonObject()
+
+        // Create manga array
+        val mangaEntries = JsonArray()
+
+        // Create category array
+        val categoryEntries = JsonArray()
+
+        // Add value's to root
+        root[VERSION] = Backup.CURRENT_VERSION
+        root[MANGAS] = mangaEntries
+        root[CATEGORIES] = categoryEntries
+
+        backupManager.databaseHelper.inTransaction {
+            // Get manga from database
+            val mangas = backupManager.getFavoriteManga()
+
+            // Backup library manga and its dependencies
+            mangas.forEach { manga ->
+                mangaEntries.add(backupManager.backupMangaObject(manga, flags))
+            }
+
+            // Backup categories
+            if ((flags and BACKUP_CATEGORY_MASK) == BACKUP_CATEGORY) {
+                backupManager.backupCategories(categoryEntries)
+            }
+        }
+
+        try {
+            // When BackupCreatorJob
+            if (isJob) {
+                // Get dir of file
+                val dir = UniFile.fromUri(this, uri)
+
+                // Delete older backups
+                val numberOfBackups = backupManager.numberOfBackups()
+                val backupRegex = Regex("""tachiyomi_\d+-\d+-\d+_\d+-\d+.json""")
+                dir.listFiles { _, filename -> backupRegex.matches(filename) }
+                        .orEmpty()
+                        .sortedByDescending { it.name }
+                        .drop(numberOfBackups - 1)
+                        .forEach { it.delete() }
+
+                // Create new file to place backup
+                val newFile = dir.createFile(Backup.getDefaultFilename())
+                        ?: throw Exception("Couldn't create backup file")
+
+                newFile.openOutputStream().bufferedWriter().use {
+                    backupManager.parser.toJson(root, it)
+                }
+            } else {
+                val file = UniFile.fromUri(this, uri)
+                        ?: throw Exception("Couldn't create backup file")
+                file.openOutputStream().bufferedWriter().use {
+                    backupManager.parser.toJson(root, it)
+                }
+
+                // Show completed dialog
+                val intent = Intent(SettingsBackupFragment.INTENT_FILTER).apply {
+                    putExtra(SettingsBackupFragment.ACTION, SettingsBackupFragment.ACTION_BACKUP_COMPLETED_DIALOG)
+                    putExtra(SettingsBackupFragment.EXTRA_URI, file.uri.toString())
+                }
+                sendLocalBroadcast(intent)
+            }
+        } catch (e: Exception) {
+            Timber.e(e)
+            if (!isJob) {
+                // Show error dialog
+                val intent = Intent(SettingsBackupFragment.INTENT_FILTER).apply {
+                    putExtra(SettingsBackupFragment.ACTION, SettingsBackupFragment.ACTION_ERROR_BACKUP_DIALOG)
+                    putExtra(SettingsBackupFragment.EXTRA_ERROR_MESSAGE, e.message)
+                }
+                sendLocalBroadcast(intent)
+            }
+        }
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupCreatorJob.kt

@@ -0,0 +1,41 @@
+package eu.kanade.tachiyomi.data.backup
+
+import com.evernote.android.job.Job
+import com.evernote.android.job.JobManager
+import com.evernote.android.job.JobRequest
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.preference.getOrDefault
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.get
+
+class BackupCreatorJob : Job() {
+
+    override fun onRunJob(params: Params): Result {
+        val preferences = Injekt.get<PreferencesHelper>()
+        val path = preferences.backupsDirectory().getOrDefault()
+        val flags = BackupCreateService.BACKUP_ALL
+        BackupCreateService.makeBackup(context,path,flags,true)
+        return Result.SUCCESS
+    }
+
+    companion object {
+        const val TAG = "BackupCreator"
+
+        fun setupTask(prefInterval: Int? = null) {
+            val preferences = Injekt.get<PreferencesHelper>()
+            val interval = prefInterval ?: preferences.backupInterval().getOrDefault()
+            if (interval > 0) {
+                JobRequest.Builder(TAG)
+                        .setPeriodic(interval * 60 * 60 * 1000L, 10 * 60 * 1000)
+                        .setPersisted(true)
+                        .setUpdateCurrent(true)
+                        .build()
+                        .schedule()
+            }
+        }
+
+        fun cancelTask() {
+            JobManager.instance().cancelAllForTag(TAG)
+        }
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupManager.kt

@@ -1,203 +1,213 @@
 package eu.kanade.tachiyomi.data.backup
 
-import com.github.salomonbrys.kotson.fromJson
+import android.content.Context
+import com.github.salomonbrys.kotson.*
 import com.google.gson.*
-import com.google.gson.stream.JsonReader
-import eu.kanade.tachiyomi.data.backup.serializer.BooleanSerializer
-import eu.kanade.tachiyomi.data.backup.serializer.IdExclusion
-import eu.kanade.tachiyomi.data.backup.serializer.IntegerSerializer
-import eu.kanade.tachiyomi.data.backup.serializer.LongSerializer
+import eu.kanade.tachiyomi.data.backup.BackupCreateService.Companion.BACKUP_CATEGORY
+import eu.kanade.tachiyomi.data.backup.BackupCreateService.Companion.BACKUP_CATEGORY_MASK
+import eu.kanade.tachiyomi.data.backup.BackupCreateService.Companion.BACKUP_CHAPTER
+import eu.kanade.tachiyomi.data.backup.BackupCreateService.Companion.BACKUP_CHAPTER_MASK
+import eu.kanade.tachiyomi.data.backup.BackupCreateService.Companion.BACKUP_HISTORY
+import eu.kanade.tachiyomi.data.backup.BackupCreateService.Companion.BACKUP_HISTORY_MASK
+import eu.kanade.tachiyomi.data.backup.BackupCreateService.Companion.BACKUP_TRACK
+import eu.kanade.tachiyomi.data.backup.BackupCreateService.Companion.BACKUP_TRACK_MASK
+import eu.kanade.tachiyomi.data.backup.models.Backup.CATEGORIES
+import eu.kanade.tachiyomi.data.backup.models.Backup.CHAPTERS
+import eu.kanade.tachiyomi.data.backup.models.Backup.CURRENT_VERSION
+import eu.kanade.tachiyomi.data.backup.models.Backup.HISTORY
+import eu.kanade.tachiyomi.data.backup.models.Backup.MANGA
+import eu.kanade.tachiyomi.data.backup.models.Backup.TRACK
+import eu.kanade.tachiyomi.data.backup.models.DHistory
+import eu.kanade.tachiyomi.data.backup.serializer.*
 import eu.kanade.tachiyomi.data.database.DatabaseHelper
 import eu.kanade.tachiyomi.data.database.models.*
-import java.io.*
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.preference.getOrDefault
+import eu.kanade.tachiyomi.source.Source
+import eu.kanade.tachiyomi.source.SourceManager
+import eu.kanade.tachiyomi.util.syncChaptersWithSource
+import rx.Observable
+import uy.kohesive.injekt.injectLazy
 import java.util.*
 
-/**
- * This class provides the necessary methods to create and restore backups for the data of the
- * application. The backup follows a JSON structure, with the following scheme:
- *
- * {
- *     "mangas": [
- *         {
- *             "manga": {"id": 1, ...},
- *             "chapters": [{"id": 1, ...}, {...}],
- *             "sync": [{"id": 1, ...}, {...}],
- *             "categories": ["cat1", "cat2", ...]
- *         },
- *         { ... }
- *     ],
- *     "categories": [
- *         {"id": 1, ...},
- *         {"id": 2, ...}
- *     ]
- * }
- *
- * @param db the database helper.
- */
-class BackupManager(private val db: DatabaseHelper) {
-
-    private val MANGA = "manga"
-    private val MANGAS = "mangas"
-    private val CHAPTERS = "chapters"
-    private val TRACK = "sync"
-    private val CATEGORIES = "categories"
-
-    @Suppress("PLATFORM_CLASS_MAPPED_TO_KOTLIN")
-    private val gson = GsonBuilder()
-            .registerTypeAdapter(java.lang.Integer::class.java, IntegerSerializer())
-            .registerTypeAdapter(java.lang.Boolean::class.java, BooleanSerializer())
-            .registerTypeAdapter(java.lang.Long::class.java, LongSerializer())
-            .setExclusionStrategies(IdExclusion())
-            .create()
+class BackupManager(val context: Context, version: Int = CURRENT_VERSION) {
 
     /**
-     * Backups the data of the application to a file.
-     *
-     * @param file the file where the backup will be saved.
-     * @throws IOException if there's any IO error.
+     * Database.
      */
-    @Throws(IOException::class)
-    fun backupToFile(file: File) {
-        val root = backupToJson()
+    internal val databaseHelper: DatabaseHelper by injectLazy()
 
-        FileWriter(file).use {
-            gson.toJson(root, it)
+    /**
+     * Source manager.
+     */
+    internal val sourceManager: SourceManager by injectLazy()
+
+    /**
+     * Version of parser
+     */
+    var version: Int = version
+        private set
+
+    /**
+     * Json Parser
+     */
+    var parser: Gson = initParser()
+
+    /**
+     * Preferences
+     */
+    private val preferences: PreferencesHelper by injectLazy()
+
+    /**
+     * Set version of parser
+     *
+     * @param version version of parser
+     */
+    internal fun setVersion(version: Int) {
+        this.version = version
+        parser = initParser()
+    }
+
+    private fun initParser(): Gson {
+        return when (version) {
+            1 -> GsonBuilder().create()
+            2 -> GsonBuilder()
+                    .registerTypeAdapter<MangaImpl>(MangaTypeAdapter.build())
+                    .registerTypeHierarchyAdapter<ChapterImpl>(ChapterTypeAdapter.build())
+                    .registerTypeAdapter<CategoryImpl>(CategoryTypeAdapter.build())
+                    .registerTypeAdapter<DHistory>(HistoryTypeAdapter.build())
+                    .registerTypeHierarchyAdapter<TrackImpl>(TrackTypeAdapter.build())
+                    .create()
+            else -> throw Exception("Json version unknown")
         }
     }
 
     /**
-     * Creates a JSON object containing the backup of the app's data.
+     * Backup the categories of library
      *
-     * @return the backup as a JSON object.
+     * @param root root of categories json
      */
-    fun backupToJson(): JsonObject {
-        val root = JsonObject()
-
-        // Backup library mangas and its dependencies
-        val mangaEntries = JsonArray()
-        root.add(MANGAS, mangaEntries)
-        for (manga in db.getFavoriteMangas().executeAsBlocking()) {
-            mangaEntries.add(backupManga(manga))
-        }
-
-        // Backup categories
-        val categoryEntries = JsonArray()
-        root.add(CATEGORIES, categoryEntries)
-        for (category in db.getCategories().executeAsBlocking()) {
-            categoryEntries.add(backupCategory(category))
-        }
-
-        return root
+    internal fun backupCategories(root: JsonArray) {
+        val categories = databaseHelper.getCategories().executeAsBlocking()
+        categories.forEach { root.add(parser.toJsonTree(it)) }
     }
 
     /**
-     * Backups a manga and its related data (chapters, categories this manga is in, sync...).
+     * Convert a manga to Json
      *
-     * @param manga the manga to backup.
-     * @return a JSON object containing all the data of the manga.
+     * @param manga manga that gets converted
+     * @return [JsonElement] containing manga information
      */
-    private fun backupManga(manga: Manga): JsonObject {
+    internal fun backupMangaObject(manga: Manga, options: Int): JsonElement {
         // Entry for this manga
         val entry = JsonObject()
 
         // Backup manga fields
-        entry.add(MANGA, gson.toJsonTree(manga))
+        entry[MANGA] = parser.toJsonTree(manga)
 
-        // Backup all the chapters
-        val chapters = db.getChapters(manga).executeAsBlocking()
-        if (!chapters.isEmpty()) {
-            entry.add(CHAPTERS, gson.toJsonTree(chapters))
-        }
-
-        // Backup tracks
-        val tracks = db.getTracks(manga).executeAsBlocking()
-        if (!tracks.isEmpty()) {
-            entry.add(TRACK, gson.toJsonTree(tracks))
-        }
-
-        // Backup categories for this manga
-        val categoriesForManga = db.getCategoriesForManga(manga).executeAsBlocking()
-        if (!categoriesForManga.isEmpty()) {
-            val categoriesNames = ArrayList<String>()
-            for (category in categoriesForManga) {
-                categoriesNames.add(category.name)
+        // Check if user wants chapter information in backup
+        if (options and BACKUP_CHAPTER_MASK == BACKUP_CHAPTER) {
+            // Backup all the chapters
+            val chapters = databaseHelper.getChapters(manga).executeAsBlocking()
+            if (!chapters.isEmpty()) {
+                val chaptersJson = parser.toJsonTree(chapters)
+                if (chaptersJson.asJsonArray.size() > 0) {
+                    entry[CHAPTERS] = chaptersJson
+                }
+            }
+        }
+
+        // Check if user wants category information in backup
+        if (options and BACKUP_CATEGORY_MASK == BACKUP_CATEGORY) {
+            // Backup categories for this manga
+            val categoriesForManga = databaseHelper.getCategoriesForManga(manga).executeAsBlocking()
+            if (!categoriesForManga.isEmpty()) {
+                val categoriesNames = categoriesForManga.map { it.name }
+                entry[CATEGORIES] = parser.toJsonTree(categoriesNames)
+            }
+        }
+
+        // Check if user wants track information in backup
+        if (options and BACKUP_TRACK_MASK == BACKUP_TRACK) {
+            val tracks = databaseHelper.getTracks(manga).executeAsBlocking()
+            if (!tracks.isEmpty()) {
+                entry[TRACK] = parser.toJsonTree(tracks)
+            }
+        }
+
+        // Check if user wants history information in backup
+        if (options and BACKUP_HISTORY_MASK == BACKUP_HISTORY) {
+            val historyForManga = databaseHelper.getHistoryByMangaId(manga.id!!).executeAsBlocking()
+            if (!historyForManga.isEmpty()) {
+                val historyData = historyForManga.mapNotNull { history ->
+                    val url = databaseHelper.getChapter(history.chapter_id).executeAsBlocking()?.url
+                    url?.let { DHistory(url, history.last_read) }
+                }
+                val historyJson = parser.toJsonTree(historyData)
+                if (historyJson.asJsonArray.size() > 0) {
+                    entry[HISTORY] = historyJson
+                }
             }
-            entry.add(CATEGORIES, gson.toJsonTree(categoriesNames))
         }
 
         return entry
     }
 
-    /**
-     * Backups a category.
-     *
-     * @param category the category to backup.
-     * @return a JSON object containing the data of the category.
-     */
-    private fun backupCategory(category: Category): JsonElement {
-        return gson.toJsonTree(category)
+    fun restoreMangaNoFetch(manga: Manga, dbManga: Manga) {
+        manga.id = dbManga.id
+        manga.copyFrom(dbManga)
+        manga.favorite = true
+        insertManga(manga)
     }
 
     /**
-     * Restores a backup from a file.
+     * [Observable] that fetches manga information
      *
-     * @param file the file containing the backup.
-     * @throws IOException if there's any IO error.
+     * @param source source of manga
+     * @param manga manga that needs updating
+     * @return [Observable] that contains manga
      */
-    @Throws(IOException::class)
-    fun restoreFromFile(file: File) {
-        JsonReader(FileReader(file)).use {
-            val root = JsonParser().parse(it).asJsonObject
-            restoreFromJson(root)
-        }
+    fun restoreMangaFetchObservable(source: Source, manga: Manga): Observable<Manga> {
+        return source.fetchMangaDetails(manga)
+                .map { networkManga ->
+                    manga.copyFrom(networkManga)
+                    manga.favorite = true
+                    manga.initialized = true
+                    manga.id = insertManga(manga)
+                    manga
+                }
     }
 
     /**
-     * Restores a backup from an input stream.
+     * [Observable] that fetches chapter information
      *
-     * @param stream the stream containing the backup.
-     * @throws IOException if there's any IO error.
+     * @param source source of manga
+     * @param manga manga that needs updating
+     * @return [Observable] that contains manga
      */
-    @Throws(IOException::class)
-    fun restoreFromStream(stream: InputStream) {
-        JsonReader(InputStreamReader(stream)).use {
-            val root = JsonParser().parse(it).asJsonObject
-            restoreFromJson(root)
-        }
+    fun restoreChapterFetchObservable(source: Source, manga: Manga, chapters: List<Chapter>): Observable<Pair<List<Chapter>, List<Chapter>>> {
+        return source.fetchChapterList(manga)
+                .map { syncChaptersWithSource(databaseHelper, it, manga, source) }
+                .doOnNext {
+                    if (it.first.isNotEmpty()) {
+                        chapters.forEach { it.manga_id = manga.id }
+                        insertChapters(chapters)
+                    }
+                }
     }
 
     /**
-     * Restores a backup from a JSON object. Everything executes in a single transaction so that
-     * nothing is modified if there's an error.
+     * Restore the categories from Json
      *
-     * @param root the root of the JSON.
+     * @param jsonCategories array containing categories
      */
-    fun restoreFromJson(root: JsonObject) {
-        db.inTransaction {
-            // Restore categories
-            root.get(CATEGORIES)?.let {
-                restoreCategories(it.asJsonArray)
-            }
-
-            // Restore mangas
-            root.get(MANGAS)?.let {
-                restoreMangas(it.asJsonArray)
-            }
-        }
-    }
-
-    /**
-     * Restores the categories.
-     *
-     * @param jsonCategories the categories of the json.
-     */
-    private fun restoreCategories(jsonCategories: JsonArray) {
+    internal fun restoreCategories(jsonCategories: JsonArray) {
         // Get categories from file and from db
-        val dbCategories = db.getCategories().executeAsBlocking()
-        val backupCategories = gson.fromJson<List<CategoryImpl>>(jsonCategories)
+        val dbCategories = databaseHelper.getCategories().executeAsBlocking()
+        val backupCategories = parser.fromJson<List<CategoryImpl>>(jsonCategories)
 
         // Iterate over them
-        for (category in backupCategories) {
+        backupCategories.forEach { category ->
             // Used to know if the category is already in the db
             var found = false
             for (dbCategory in dbCategories) {
@@ -214,102 +224,20 @@ class BackupManager(private val db: DatabaseHelper) {
             if (!found) {
                 // Let the db assign the id
                 category.id = null
-                val result = db.insertCategory(category).executeAsBlocking()
+                val result = databaseHelper.insertCategory(category).executeAsBlocking()
                 category.id = result.insertedId()?.toInt()
             }
         }
     }
 
-    /**
-     * Restores all the mangas and its related data.
-     *
-     * @param jsonMangas the mangas and its related data (chapters, sync, categories) from the json.
-     */
-    private fun restoreMangas(jsonMangas: JsonArray) {
-        for (backupManga in jsonMangas) {
-            // Map every entry to objects
-            val element = backupManga.asJsonObject
-            val manga = gson.fromJson(element.get(MANGA), MangaImpl::class.java)
-            val chapters = gson.fromJson<List<ChapterImpl>>(element.get(CHAPTERS) ?: JsonArray())
-            val tracks = gson.fromJson<List<TrackImpl>>(element.get(TRACK) ?: JsonArray())
-            val categories = gson.fromJson<List<String>>(element.get(CATEGORIES) ?: JsonArray())
-
-            // Restore everything related to this manga
-            restoreManga(manga)
-            restoreChaptersForManga(manga, chapters)
-            restoreSyncForManga(manga, tracks)
-            restoreCategoriesForManga(manga, categories)
-        }
-    }
-
-    /**
-     * Restores a manga.
-     *
-     * @param manga the manga to restore.
-     */
-    private fun restoreManga(manga: Manga) {
-        // Try to find existing manga in db
-        val dbManga = db.getManga(manga.url, manga.source).executeAsBlocking()
-        if (dbManga == null) {
-            // Let the db assign the id
-            manga.id = null
-            val result = db.insertManga(manga).executeAsBlocking()
-            manga.id = result.insertedId()
-        } else {
-            // If it exists already, we copy only the values related to the source from the db
-            // (they can be up to date). Local values (flags) are kept from the backup.
-            manga.id = dbManga.id
-            manga.copyFrom(dbManga)
-            manga.favorite = true
-            db.insertManga(manga).executeAsBlocking()
-        }
-    }
-
-    /**
-     * Restores the chapters of a manga.
-     *
-     * @param manga the manga whose chapters have to be restored.
-     * @param chapters the chapters to restore.
-     */
-    private fun restoreChaptersForManga(manga: Manga, chapters: List<Chapter>) {
-        // Fix foreign keys with the current manga id
-        for (chapter in chapters) {
-            chapter.manga_id = manga.id
-        }
-
-        val dbChapters = db.getChapters(manga).executeAsBlocking()
-        val chaptersToUpdate = ArrayList<Chapter>()
-        for (backupChapter in chapters) {
-            // Try to find existing chapter in db
-            val pos = dbChapters.indexOf(backupChapter)
-            if (pos != -1) {
-                // The chapter is already in the db, only update its fields
-                val dbChapter = dbChapters[pos]
-                // If one of them was read, the chapter will be marked as read
-                dbChapter.read = backupChapter.read || dbChapter.read
-                dbChapter.last_page_read = Math.max(backupChapter.last_page_read, dbChapter.last_page_read)
-                chaptersToUpdate.add(dbChapter)
-            } else {
-                // Insert new chapter. Let the db assign the id
-                backupChapter.id = null
-                chaptersToUpdate.add(backupChapter)
-            }
-        }
-
-        // Update database
-        if (!chaptersToUpdate.isEmpty()) {
-            db.insertChapters(chaptersToUpdate).executeAsBlocking()
-        }
-    }
-
     /**
      * Restores the categories a manga is in.
      *
      * @param manga the manga whose categories have to be restored.
      * @param categories the categories to restore.
      */
-    private fun restoreCategoriesForManga(manga: Manga, categories: List<String>) {
-        val dbCategories = db.getCategories().executeAsBlocking()
+    internal fun restoreCategoriesForManga(manga: Manga, categories: List<String>) {
+        val dbCategories = databaseHelper.getCategories().executeAsBlocking()
         val mangaCategoriesToUpdate = ArrayList<MangaCategory>()
         for (backupCategoryStr in categories) {
             for (dbCategory in dbCategories) {
@@ -324,45 +252,151 @@ class BackupManager(private val db: DatabaseHelper) {
         if (!mangaCategoriesToUpdate.isEmpty()) {
             val mangaAsList = ArrayList<Manga>()
             mangaAsList.add(manga)
-            db.deleteOldMangasCategories(mangaAsList).executeAsBlocking()
-            db.insertMangasCategories(mangaCategoriesToUpdate).executeAsBlocking()
+            databaseHelper.deleteOldMangasCategories(mangaAsList).executeAsBlocking()
+            databaseHelper.insertMangasCategories(mangaCategoriesToUpdate).executeAsBlocking()
         }
     }
 
+    /**
+     * Restore history from Json
+     *
+     * @param history list containing history to be restored
+     */
+    internal fun restoreHistoryForManga(history: List<DHistory>) {
+        // List containing history to be updated
+        val historyToBeUpdated = ArrayList<History>()
+        for ((url, lastRead) in history) {
+            val dbHistory = databaseHelper.getHistoryByChapterUrl(url).executeAsBlocking()
+            // Check if history already in database and update
+            if (dbHistory != null) {
+                dbHistory.apply {
+                    last_read = Math.max(lastRead, dbHistory.last_read)
+                }
+                historyToBeUpdated.add(dbHistory)
+            } else {
+                // If not in database create
+                databaseHelper.getChapter(url).executeAsBlocking()?.let {
+                    val historyToAdd = History.create(it).apply {
+                        last_read = lastRead
+                    }
+                    historyToBeUpdated.add(historyToAdd)
+                }
+            }
+        }
+        databaseHelper.updateHistoryLastRead(historyToBeUpdated).executeAsBlocking()
+    }
+
     /**
      * Restores the sync of a manga.
      *
      * @param manga the manga whose sync have to be restored.
      * @param tracks the track list to restore.
      */
-    private fun restoreSyncForManga(manga: Manga, tracks: List<Track>) {
+    internal fun restoreTrackForManga(manga: Manga, tracks: List<Track>) {
         // Fix foreign keys with the current manga id
-        for (track in tracks) {
-            track.manga_id = manga.id!!
-        }
+        tracks.map { it.manga_id = manga.id!! }
 
-        val dbTracks = db.getTracks(manga).executeAsBlocking()
+        // Get tracks from database
+        val dbTracks = databaseHelper.getTracks(manga).executeAsBlocking()
         val trackToUpdate = ArrayList<Track>()
-        for (backupTrack in tracks) {
-            // Try to find existing chapter in db
-            val pos = dbTracks.indexOf(backupTrack)
-            if (pos != -1) {
-                // The sync is already in the db, only update its fields
-                val dbSync = dbTracks[pos]
-                // Mark the max chapter as read and nothing else
-                dbSync.last_chapter_read = Math.max(backupTrack.last_chapter_read, dbSync.last_chapter_read)
-                trackToUpdate.add(dbSync)
-            } else {
+
+        for (track in tracks) {
+            var isInDatabase = false
+            for (dbTrack in dbTracks) {
+                if (track.sync_id == dbTrack.sync_id) {
+                    // The sync is already in the db, only update its fields
+                    if (track.remote_id != dbTrack.remote_id) {
+                        dbTrack.remote_id = track.remote_id
+                    }
+                    dbTrack.last_chapter_read = Math.max(dbTrack.last_chapter_read, track.last_chapter_read)
+                    isInDatabase = true
+                    trackToUpdate.add(dbTrack)
+                    break
+                }
+            }
+            if (!isInDatabase) {
                 // Insert new sync. Let the db assign the id
-                backupTrack.id = null
-                trackToUpdate.add(backupTrack)
+                track.id = null
+                trackToUpdate.add(track)
             }
         }
-
         // Update database
         if (!trackToUpdate.isEmpty()) {
-            db.insertTracks(trackToUpdate).executeAsBlocking()
+            databaseHelper.insertTracks(trackToUpdate).executeAsBlocking()
         }
     }
 
+    /**
+     * Restore the chapters for manga if chapters already in database
+     *
+     * @param manga manga of chapters
+     * @param chapters list containing chapters that get restored
+     * @return boolean answering if chapter fetch is not needed
+     */
+    internal fun restoreChaptersForManga(manga: Manga, chapters: List<Chapter>): Boolean {
+        val dbChapters = databaseHelper.getChapters(manga).executeAsBlocking()
+
+        // Return if fetch is needed
+        if (dbChapters.isEmpty() || dbChapters.size < chapters.size)
+            return false
+
+        for (chapter in chapters) {
+            val pos = dbChapters.indexOf(chapter)
+            if (pos != -1) {
+                val dbChapter = dbChapters[pos]
+                chapter.id = dbChapter.id
+                chapter.copyFrom(dbChapter)
+                break
+            }
+        }
+        // Filter the chapters that couldn't be found.
+        chapters.filter { it.id != null }
+        chapters.map { it.manga_id = manga.id }
+
+        insertChapters(chapters)
+        return true
+    }
+
+    /**
+     * Returns manga
+     *
+     * @return [Manga], null if not found
+     */
+    internal fun getMangaFromDatabase(manga: Manga): Manga? {
+        return databaseHelper.getManga(manga.url, manga.source).executeAsBlocking()
+    }
+
+    /**
+     * Returns list containing manga from library
+     *
+     * @return [Manga] from library
+     */
+    internal fun getFavoriteManga(): List<Manga> {
+        return databaseHelper.getFavoriteMangas().executeAsBlocking()
+    }
+
+    /**
+     * Inserts manga and returns id
+     *
+     * @return id of [Manga], null if not found
+     */
+    internal fun insertManga(manga: Manga): Long? {
+        return databaseHelper.insertManga(manga).executeAsBlocking().insertedId()
+    }
+
+    /**
+     * Inserts list of chapters
+     */
+    internal fun insertChapters(chapters: List<Chapter>) {
+        databaseHelper.updateChaptersBackup(chapters).executeAsBlocking()
+    }
+
+    /**
+     * Return number of backups.
+     *
+     * @return number of backups selected by user
+     */
+    fun numberOfBackups(): Int {
+        return preferences.numberOfBackups().getOrDefault()
+    }
 }

app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupRestoreService.kt

@@ -0,0 +1,414 @@
+package eu.kanade.tachiyomi.data.backup
+
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.IBinder
+import android.os.PowerManager
+import com.github.salomonbrys.kotson.fromJson
+import com.google.gson.JsonArray
+import com.google.gson.JsonParser
+import com.google.gson.stream.JsonReader
+import com.hippo.unifile.UniFile
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.backup.models.Backup.CATEGORIES
+import eu.kanade.tachiyomi.data.backup.models.Backup.CHAPTERS
+import eu.kanade.tachiyomi.data.backup.models.Backup.HISTORY
+import eu.kanade.tachiyomi.data.backup.models.Backup.MANGA
+import eu.kanade.tachiyomi.data.backup.models.Backup.MANGAS
+import eu.kanade.tachiyomi.data.backup.models.Backup.TRACK
+import eu.kanade.tachiyomi.data.backup.models.Backup.VERSION
+import eu.kanade.tachiyomi.data.backup.models.DHistory
+import eu.kanade.tachiyomi.data.database.DatabaseHelper
+import eu.kanade.tachiyomi.data.database.models.*
+import eu.kanade.tachiyomi.source.Source
+import eu.kanade.tachiyomi.ui.setting.SettingsBackupFragment
+import eu.kanade.tachiyomi.util.AndroidComponentUtil
+import eu.kanade.tachiyomi.util.chop
+import eu.kanade.tachiyomi.util.sendLocalBroadcast
+import rx.Observable
+import rx.Subscription
+import rx.schedulers.Schedulers
+import timber.log.Timber
+import uy.kohesive.injekt.injectLazy
+import java.io.File
+import java.text.SimpleDateFormat
+import java.util.*
+import java.util.concurrent.ExecutorService
+import java.util.concurrent.Executors
+import eu.kanade.tachiyomi.BuildConfig.APPLICATION_ID as ID
+
+/**
+ * Restores backup from json file
+ */
+class BackupRestoreService : Service() {
+
+    companion object {
+        // Name of service
+        private const val NAME = "BackupRestoreService"
+
+        // Uri as string
+        private const val EXTRA_URI = "$ID.$NAME.EXTRA_URI"
+
+        /**
+         * Returns the status of the service.
+         *
+         * @param context the application context.
+         * @return true if the service is running, false otherwise.
+         */
+        fun isRunning(context: Context): Boolean {
+            return AndroidComponentUtil.isServiceRunning(context, BackupRestoreService::class.java)
+        }
+
+        /**
+         * Starts a service to restore a backup from Json
+         *
+         * @param context context of application
+         * @param uri path of Uri
+         */
+        fun start(context: Context, uri: String) {
+            if (!isRunning(context)) {
+                val intent = Intent(context, BackupRestoreService::class.java).apply {
+                    putExtra(EXTRA_URI, uri)
+                }
+                context.startService(intent)
+            }
+        }
+
+        /**
+         * Stops the service.
+         *
+         * @param context the application context.
+         */
+        fun stop(context: Context) {
+            context.stopService(Intent(context, BackupRestoreService::class.java))
+        }
+    }
+
+    /**
+     * Wake lock that will be held until the service is destroyed.
+     */
+    private lateinit var wakeLock: PowerManager.WakeLock
+
+    /**
+     * Subscription where the update is done.
+     */
+    private var subscription: Subscription? = null
+
+    /**
+     * The progress of a backup restore
+     */
+    private var restoreProgress = 0
+
+    /**
+     * Amount of manga in Json file (needed for restore)
+     */
+    private var restoreAmount = 0
+
+    /**
+     * List containing errors
+     */
+    private val errors = mutableListOf<Pair<Date, String>>()
+
+    /**
+     * Backup manager
+     */
+    private lateinit var backupManager: BackupManager
+
+    /**
+     * Database
+     */
+    private val db: DatabaseHelper by injectLazy()
+
+    lateinit var executor: ExecutorService
+
+    /**
+     * Method called when the service is created. It injects dependencies and acquire the wake lock.
+     */
+    override fun onCreate() {
+        super.onCreate()
+        wakeLock = (getSystemService(Context.POWER_SERVICE) as PowerManager).newWakeLock(
+                PowerManager.PARTIAL_WAKE_LOCK, "BackupRestoreService:WakeLock")
+        wakeLock.acquire()
+        executor = Executors.newSingleThreadExecutor()
+    }
+
+    /**
+     * Method called when the service is destroyed. It destroys the running subscription and
+     * releases the wake lock.
+     */
+    override fun onDestroy() {
+        subscription?.unsubscribe()
+        executor.shutdown() // must be called after unsubscribe
+        if (wakeLock.isHeld) {
+            wakeLock.release()
+        }
+        super.onDestroy()
+    }
+
+    /**
+     * This method needs to be implemented, but it's not used/needed.
+     */
+    override fun onBind(intent: Intent): IBinder? {
+        return null
+    }
+
+    /**
+     * Method called when the service receives an intent.
+     *
+     * @param intent the start intent from.
+     * @param flags the flags of the command.
+     * @param startId the start id of this command.
+     * @return the start value of the command.
+     */
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        if (intent == null) return Service.START_NOT_STICKY
+
+        val file = UniFile.fromUri(this, Uri.parse(intent.getStringExtra(EXTRA_URI)))
+
+        // Unsubscribe from any previous subscription if needed.
+        subscription?.unsubscribe()
+
+        subscription = Observable.using(
+                { db.lowLevel().beginTransaction() },
+                { getRestoreObservable(file).doOnNext{ db.lowLevel().setTransactionSuccessful() } },
+                { executor.execute { db.lowLevel().endTransaction() } })
+                .doAfterTerminate { stopSelf(startId) }
+                .subscribeOn(Schedulers.from(executor))
+                .subscribe()
+
+        return Service.START_NOT_STICKY
+    }
+
+    /**
+     * Returns an [Observable] containing restore process.
+     *
+     * @param file restore file
+     * @return [Observable<Manga>]
+     */
+    private fun getRestoreObservable(file: UniFile): Observable<List<Manga>> {
+        val startTime = System.currentTimeMillis()
+
+        val reader = JsonReader(file.openInputStream().bufferedReader())
+        val json = JsonParser().parse(reader).asJsonObject
+
+        // Get parser version
+        val version = json.get(VERSION)?.asInt ?: 1
+
+        // Initialize manager
+        backupManager = BackupManager(this, version)
+
+        val mangasJson = json.get(MANGAS).asJsonArray
+
+        restoreAmount = mangasJson.size() + 1 // +1 for categories
+        restoreProgress = 0
+        errors.clear()
+
+        // Restore categories
+        json.get(CATEGORIES)?.let {
+            backupManager.restoreCategories(it.asJsonArray)
+            restoreProgress += 1
+            showRestoreProgress(restoreProgress, restoreAmount, "Categories added", errors.size)
+        }
+
+        return Observable.from(mangasJson)
+                .concatMap {
+                    val obj = it.asJsonObject
+                    val manga = backupManager.parser.fromJson<MangaImpl>(obj.get(MANGA))
+                    val chapters = backupManager.parser.fromJson<List<ChapterImpl>>(obj.get(CHAPTERS) ?: JsonArray())
+                    val categories = backupManager.parser.fromJson<List<String>>(obj.get(CATEGORIES) ?: JsonArray())
+                    val history = backupManager.parser.fromJson<List<DHistory>>(obj.get(HISTORY) ?: JsonArray())
+                    val tracks = backupManager.parser.fromJson<List<TrackImpl>>(obj.get(TRACK) ?: JsonArray())
+
+                    val observable = getMangaRestoreObservable(manga, chapters, categories, history, tracks)
+                    if (observable != null) {
+                        observable
+                    } else {
+                        errors.add(Date() to "${manga.title} - ${getString(R.string.source_not_found)}")
+                        restoreProgress += 1
+                        val content = getString(R.string.dialog_restoring_source_not_found, manga.title.chop(15))
+                        showRestoreProgress(restoreProgress, restoreAmount, manga.title, errors.size, content)
+                        Observable.just(manga)
+                    }
+                }
+                .toList()
+                .doOnNext {
+                    val endTime = System.currentTimeMillis()
+                    val time = endTime - startTime
+                    val logFile = writeErrorLog()
+                    val completeIntent = Intent(SettingsBackupFragment.INTENT_FILTER).apply {
+                        putExtra(SettingsBackupFragment.EXTRA_TIME, time)
+                        putExtra(SettingsBackupFragment.EXTRA_ERRORS, errors.size)
+                        putExtra(SettingsBackupFragment.EXTRA_ERROR_FILE_PATH, logFile.parent)
+                        putExtra(SettingsBackupFragment.EXTRA_ERROR_FILE, logFile.name)
+                        putExtra(SettingsBackupFragment.ACTION, SettingsBackupFragment.ACTION_RESTORE_COMPLETED_DIALOG)
+                    }
+                    sendLocalBroadcast(completeIntent)
+
+                }
+                .doOnError { error ->
+                    Timber.e(error)
+                    writeErrorLog()
+                    val errorIntent = Intent(SettingsBackupFragment.INTENT_FILTER).apply {
+                        putExtra(SettingsBackupFragment.ACTION, SettingsBackupFragment.ACTION_ERROR_RESTORE_DIALOG)
+                        putExtra(SettingsBackupFragment.EXTRA_ERROR_MESSAGE, error.message)
+                    }
+                    sendLocalBroadcast(errorIntent)
+                }
+                .onErrorReturn { emptyList() }
+    }
+
+    /**
+     * Write errors to error log
+     */
+    private fun writeErrorLog(): File {
+        try {
+            if (errors.isNotEmpty()) {
+                val destFile = File(externalCacheDir, "tachiyomi_restore.log")
+                val sdf = SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS", Locale.getDefault())
+
+                destFile.bufferedWriter().use { out ->
+                    errors.forEach { (date, message) ->
+                        out.write("[${sdf.format(date)}] $message\n")
+                    }
+                }
+                return destFile
+            }
+        } catch (e: Exception) {
+            // Empty
+        }
+        return File("")
+    }
+
+    /**
+     * Returns a manga restore observable
+     *
+     * @param manga manga data from json
+     * @param chapters chapters data from json
+     * @param categories categories data from json
+     * @param history history data from json
+     * @param tracks tracking data from json
+     * @return [Observable] containing manga restore information
+     */
+    private fun getMangaRestoreObservable(manga: Manga, chapters: List<Chapter>,
+                                          categories: List<String>, history: List<DHistory>,
+                                          tracks: List<Track>): Observable<Manga>? {
+        // Get source
+        val source = backupManager.sourceManager.get(manga.source) ?: return null
+        val dbManga = backupManager.getMangaFromDatabase(manga)
+
+        if (dbManga == null) {
+            // Manga not in database
+            return mangaFetchObservable(source, manga, chapters, categories, history, tracks)
+        } else { // Manga in database
+            // Copy information from manga already in database
+            backupManager.restoreMangaNoFetch(manga, dbManga)
+            // Fetch rest of manga information
+            return mangaNoFetchObservable(source, manga, chapters, categories, history, tracks)
+        }
+    }
+
+    /**
+     * [Observable] that fetches manga information
+     *
+     * @param manga manga that needs updating
+     * @param chapters chapters of manga that needs updating
+     * @param categories categories that need updating
+     */
+    private fun mangaFetchObservable(source: Source, manga: Manga, chapters: List<Chapter>,
+                                     categories: List<String>, history: List<DHistory>,
+                                     tracks: List<Track>): Observable<Manga> {
+        return backupManager.restoreMangaFetchObservable(source, manga)
+                .onErrorReturn {
+                    errors.add(Date() to "${manga.title} - ${it.message}")
+                    manga
+                }
+                .filter { it.id != null }
+                .flatMap { manga ->
+                    chapterFetchObservable(source, manga, chapters)
+                            // Convert to the manga that contains new chapters.
+                            .map { manga }
+                }
+                .doOnNext {
+                    // Restore categories
+                    backupManager.restoreCategoriesForManga(it, categories)
+
+                    // Restore history
+                    backupManager.restoreHistoryForManga(history)
+
+                    // Restore tracking
+                    backupManager.restoreTrackForManga(it, tracks)
+                }
+                .doOnCompleted {
+                    restoreProgress += 1
+                    showRestoreProgress(restoreProgress, restoreAmount, manga.title, errors.size)
+                }
+    }
+
+    private fun mangaNoFetchObservable(source: Source, backupManga: Manga, chapters: List<Chapter>,
+                                       categories: List<String>, history: List<DHistory>,
+                                       tracks: List<Track>): Observable<Manga> {
+
+        return Observable.just(backupManga)
+                .flatMap { manga ->
+                    if (!backupManager.restoreChaptersForManga(manga, chapters)) {
+                        chapterFetchObservable(source, manga, chapters)
+                                .map { manga }
+                    } else {
+                        Observable.just(manga)
+                    }
+                }
+                .doOnNext {
+                    // Restore categories
+                    backupManager.restoreCategoriesForManga(it, categories)
+
+                    // Restore history
+                    backupManager.restoreHistoryForManga(history)
+
+                    // Restore tracking
+                    backupManager.restoreTrackForManga(it, tracks)
+                }
+                .doOnCompleted {
+                    restoreProgress += 1
+                    showRestoreProgress(restoreProgress, restoreAmount, backupManga.title, errors.size)
+                }
+    }
+
+    /**
+     * [Observable] that fetches chapter information
+     *
+     * @param source source of manga
+     * @param manga manga that needs updating
+     * @return [Observable] that contains manga
+     */
+    private fun chapterFetchObservable(source: Source, manga: Manga, chapters: List<Chapter>): Observable<Pair<List<Chapter>, List<Chapter>>> {
+        return backupManager.restoreChapterFetchObservable(source, manga, chapters)
+                // If there's any error, return empty update and continue.
+                .onErrorReturn {
+                    errors.add(Date() to "${manga.title} - ${it.message}")
+                    Pair(emptyList<Chapter>(), emptyList<Chapter>())
+                }
+    }
+
+
+    /**
+     * Called to update dialog in [SettingsBackupFragment]
+     *
+     * @param progress restore progress
+     * @param amount total restoreAmount of manga
+     * @param title title of restored manga
+     */
+    private fun showRestoreProgress(progress: Int, amount: Int, title: String, errors: Int,
+                                    content: String = getString(R.string.dialog_restoring_backup, title.chop(15))) {
+        val intent = Intent(SettingsBackupFragment.INTENT_FILTER).apply {
+            putExtra(SettingsBackupFragment.EXTRA_PROGRESS, progress)
+            putExtra(SettingsBackupFragment.EXTRA_AMOUNT, amount)
+            putExtra(SettingsBackupFragment.EXTRA_CONTENT, content)
+            putExtra(SettingsBackupFragment.EXTRA_ERRORS, errors)
+            putExtra(SettingsBackupFragment.ACTION, SettingsBackupFragment.ACTION_SET_PROGRESS_DIALOG)
+        }
+        sendLocalBroadcast(intent)
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/backup/models/Backup.kt

@@ -0,0 +1,23 @@
+package eu.kanade.tachiyomi.data.backup.models
+
+import java.text.SimpleDateFormat
+import java.util.*
+
+/**
+ * Json values
+ */
+object Backup {
+    const val CURRENT_VERSION = 2
+    const val MANGA = "manga"
+    const val MANGAS = "mangas"
+    const val TRACK = "track"
+    const val CHAPTERS = "chapters"
+    const val CATEGORIES = "categories"
+    const val HISTORY = "history"
+    const val VERSION = "version"
+
+    fun getDefaultFilename(): String {
+        val date = SimpleDateFormat("yyyy-MM-dd_HH-mm", Locale.getDefault()).format(Date())
+        return "tachiyomi_$date.json"
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/backup/models/DHistory.kt

@@ -0,0 +1,3 @@
+package eu.kanade.tachiyomi.data.backup.models
+
+data class DHistory(val url: String,val lastRead: Long)

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/BooleanSerializer.kt

@@ -1,16 +0,0 @@
-package eu.kanade.tachiyomi.data.backup.serializer
-
-import com.google.gson.JsonElement
-import com.google.gson.JsonPrimitive
-import com.google.gson.JsonSerializationContext
-import com.google.gson.JsonSerializer
-import java.lang.reflect.Type
-
-class BooleanSerializer : JsonSerializer<Boolean> {
-
-    override fun serialize(value: Boolean?, type: Type, context: JsonSerializationContext): JsonElement? {
-        if (value != null && value != false)
-            return JsonPrimitive(value)
-        return null
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/CategoryTypeAdapter.kt

@@ -0,0 +1,31 @@
+package eu.kanade.tachiyomi.data.backup.serializer
+
+import com.github.salomonbrys.kotson.typeAdapter
+import com.google.gson.TypeAdapter
+import eu.kanade.tachiyomi.data.database.models.CategoryImpl
+
+/**
+ * JSON Serializer used to write / read [CategoryImpl] to / from json
+ */
+object CategoryTypeAdapter {
+
+    fun build(): TypeAdapter<CategoryImpl> {
+        return typeAdapter {
+            write {
+                beginArray()
+                value(it.name)
+                value(it.order)
+                endArray()
+            }
+
+            read {
+                beginArray()
+                val category = CategoryImpl()
+                category.name = nextString()
+                category.order = nextInt()
+                endArray()
+                category
+            }
+        }
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/ChapterTypeAdapter.kt

@@ -0,0 +1,61 @@
+package eu.kanade.tachiyomi.data.backup.serializer
+
+import com.github.salomonbrys.kotson.typeAdapter
+import com.google.gson.TypeAdapter
+import com.google.gson.stream.JsonToken
+import eu.kanade.tachiyomi.data.database.models.ChapterImpl
+
+/**
+ * JSON Serializer used to write / read [ChapterImpl] to / from json
+ */
+object ChapterTypeAdapter {
+
+    private const val URL = "u"
+    private const val READ = "r"
+    private const val BOOKMARK = "b"
+    private const val LAST_READ = "l"
+
+    fun build(): TypeAdapter<ChapterImpl> {
+        return typeAdapter {
+            write {
+                if (it.read || it.bookmark || it.last_page_read != 0) {
+                    beginObject()
+                    name(URL)
+                    value(it.url)
+                    if (it.read) {
+                        name(READ)
+                        value(1)
+                    }
+                    if (it.bookmark) {
+                        name(BOOKMARK)
+                        value(1)
+                    }
+                    if (it.last_page_read != 0) {
+                        name(LAST_READ)
+                        value(it.last_page_read)
+                    }
+                    endObject()
+                }
+            }
+
+            read {
+                val chapter = ChapterImpl()
+                beginObject()
+                while (hasNext()) {
+                    if (peek() == JsonToken.NAME) {
+                        val name = nextName()
+
+                        when (name) {
+                            URL -> chapter.url = nextString()
+                            READ -> chapter.read = nextInt() == 1
+                            BOOKMARK -> chapter.bookmark = nextInt() == 1
+                            LAST_READ -> chapter.last_page_read = nextInt()
+                        }
+                    }
+                }
+                endObject()
+                chapter
+            }
+        }
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/HistoryTypeAdapter.kt

@@ -0,0 +1,32 @@
+package eu.kanade.tachiyomi.data.backup.serializer
+
+import com.github.salomonbrys.kotson.typeAdapter
+import com.google.gson.TypeAdapter
+import eu.kanade.tachiyomi.data.backup.models.DHistory
+
+/**
+ * JSON Serializer used to write / read [DHistory] to / from json
+ */
+object HistoryTypeAdapter {
+
+    fun build(): TypeAdapter<DHistory> {
+        return typeAdapter {
+            write {
+                if (it.lastRead != 0L) {
+                    beginArray()
+                    value(it.url)
+                    value(it.lastRead)
+                    endArray()
+                }
+            }
+
+            read {
+                beginArray()
+                val url = nextString()
+                val lastRead = nextLong()
+                endArray()
+                DHistory(url, lastRead)
+            }
+        }
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/IdExclusion.kt

@@ -1,27 +0,0 @@
-package eu.kanade.tachiyomi.data.backup.serializer
-
-import com.google.gson.ExclusionStrategy
-import com.google.gson.FieldAttributes
-import eu.kanade.tachiyomi.data.database.models.CategoryImpl
-import eu.kanade.tachiyomi.data.database.models.ChapterImpl
-import eu.kanade.tachiyomi.data.database.models.MangaImpl
-import eu.kanade.tachiyomi.data.database.models.TrackImpl
-
-class IdExclusion : ExclusionStrategy {
-
-    private val categoryExclusions = listOf("id")
-    private val mangaExclusions = listOf("id")
-    private val chapterExclusions = listOf("id", "manga_id")
-    private val syncExclusions = listOf("id", "manga_id", "update")
-
-    override fun shouldSkipField(f: FieldAttributes) = when (f.declaringClass) {
-        MangaImpl::class.java -> mangaExclusions.contains(f.name)
-        ChapterImpl::class.java -> chapterExclusions.contains(f.name)
-        TrackImpl::class.java -> syncExclusions.contains(f.name)
-        CategoryImpl::class.java -> categoryExclusions.contains(f.name)
-        else -> false
-    }
-
-    override fun shouldSkipClass(clazz: Class<*>) = false
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/IntegerSerializer.kt

@@ -1,17 +0,0 @@
-package eu.kanade.tachiyomi.data.backup.serializer
-
-import com.google.gson.JsonElement
-import com.google.gson.JsonPrimitive
-import com.google.gson.JsonSerializationContext
-import com.google.gson.JsonSerializer
-
-import java.lang.reflect.Type
-
-class IntegerSerializer : JsonSerializer<Int> {
-
-    override fun serialize(value: Int?, type: Type, context: JsonSerializationContext): JsonElement? {
-        if (value != null && value !== 0)
-            return JsonPrimitive(value)
-        return null
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/LongSerializer.kt

@@ -1,16 +0,0 @@
-package eu.kanade.tachiyomi.data.backup.serializer
-
-import com.google.gson.JsonElement
-import com.google.gson.JsonPrimitive
-import com.google.gson.JsonSerializationContext
-import com.google.gson.JsonSerializer
-import java.lang.reflect.Type
-
-class LongSerializer : JsonSerializer<Long> {
-
-    override fun serialize(value: Long?, type: Type, context: JsonSerializationContext): JsonElement? {
-        if (value != null && value !== 0L)
-            return JsonPrimitive(value)
-        return null
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/MangaTypeAdapter.kt

@@ -0,0 +1,37 @@
+package eu.kanade.tachiyomi.data.backup.serializer
+
+import com.github.salomonbrys.kotson.typeAdapter
+import com.google.gson.TypeAdapter
+import eu.kanade.tachiyomi.data.database.models.MangaImpl
+
+/**
+ * JSON Serializer used to write / read [MangaImpl] to / from json
+ */
+object MangaTypeAdapter {
+
+    fun build(): TypeAdapter<MangaImpl> {
+        return typeAdapter {
+            write {
+                beginArray()
+                value(it.url)
+                value(it.title)
+                value(it.source)
+                value(it.viewer)
+                value(it.chapter_flags)
+                endArray()
+            }
+
+            read {
+                beginArray()
+                val manga = MangaImpl()
+                manga.url = nextString()
+                manga.title = nextString()
+                manga.source = nextLong()
+                manga.viewer = nextInt()
+                manga.chapter_flags = nextInt()
+                endArray()
+                manga
+            }
+        }
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/TrackTypeAdapter.kt

@@ -0,0 +1,53 @@
+package eu.kanade.tachiyomi.data.backup.serializer
+
+import com.github.salomonbrys.kotson.typeAdapter
+import com.google.gson.TypeAdapter
+import com.google.gson.stream.JsonToken
+import eu.kanade.tachiyomi.data.database.models.TrackImpl
+
+/**
+ * JSON Serializer used to write / read [TrackImpl] to / from json
+ */
+object TrackTypeAdapter {
+
+    private const val SYNC = "s"
+    private const val REMOTE = "r"
+    private const val TITLE = "t"
+    private const val LAST_READ = "l"
+
+    fun build(): TypeAdapter<TrackImpl> {
+        return typeAdapter {
+            write {
+                beginObject()
+                name(TITLE)
+                value(it.title)
+                name(SYNC)
+                value(it.sync_id)
+                name(REMOTE)
+                value(it.remote_id)
+                name(LAST_READ)
+                value(it.last_chapter_read)
+                endObject()
+            }
+
+            read {
+                val track = TrackImpl()
+                beginObject()
+                while (hasNext()) {
+                    if (peek() == JsonToken.NAME) {
+                        val name = nextName()
+
+                        when (name) {
+                            TITLE -> track.title = nextString()
+                            SYNC -> track.sync_id = nextInt()
+                            REMOTE -> track.remote_id = nextInt()
+                            LAST_READ -> track.last_chapter_read = nextInt()
+                        }
+                    }
+                }
+                endObject()
+                track
+            }
+        }
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/DatabaseHelper.kt

@@ -24,4 +24,6 @@ open class DatabaseHelper(context: Context)
 
     inline fun inTransaction(block: () -> Unit) = db.inTransaction(block)
 
+    fun lowLevel() = db.lowLevel()
+
 }

app/src/main/java/eu/kanade/tachiyomi/data/database/mappers/HistoryTypeMapping.kt

@@ -10,6 +10,7 @@ import com.pushtorefresh.storio.sqlite.queries.DeleteQuery
 import com.pushtorefresh.storio.sqlite.queries.InsertQuery
 import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
 import eu.kanade.tachiyomi.data.database.models.History
+import eu.kanade.tachiyomi.data.database.models.HistoryImpl
 import eu.kanade.tachiyomi.data.database.tables.HistoryTable.COL_CHAPTER_ID
 import eu.kanade.tachiyomi.data.database.tables.HistoryTable.COL_ID
 import eu.kanade.tachiyomi.data.database.tables.HistoryTable.COL_LAST_READ
@@ -44,7 +45,7 @@ open class HistoryPutResolver : DefaultPutResolver<History>() {
 
 class HistoryGetResolver : DefaultGetResolver<History>() {
 
-    override fun mapFromCursor(cursor: Cursor): History = History().apply {
+    override fun mapFromCursor(cursor: Cursor): History = HistoryImpl().apply {
         id = cursor.getLong(cursor.getColumnIndex(COL_ID))
         chapter_id = cursor.getLong(cursor.getColumnIndex(COL_CHAPTER_ID))
         last_read = cursor.getLong(cursor.getColumnIndex(COL_LAST_READ))

app/src/main/java/eu/kanade/tachiyomi/data/database/models/History.kt

@@ -5,27 +5,27 @@ import java.io.Serializable
 /**
  * Object containing the history statistics of a chapter
  */
-class History : Serializable {
+interface History : Serializable {
 
     /**
      * Id of history object.
      */
-    var id: Long? = null
+    var id: Long?
 
     /**
      * Chapter id of history object.
      */
-    var chapter_id: Long = 0
+    var chapter_id: Long
 
     /**
      * Last time chapter was read in time long format
      */
-    var last_read: Long = 0
+    var last_read: Long
 
     /**
      * Total time chapter was read - todo not yet implemented
      */
-    var time_read: Long = 0
+    var time_read: Long
 
     companion object {
 
@@ -35,10 +35,8 @@ class History : Serializable {
          * @param chapter chapter object
          * @return history object
          */
-        fun create(chapter: Chapter): History {
-            val history = History()
-            history.chapter_id = chapter.id!!
-            return history
+        fun create(chapter: Chapter): History =  HistoryImpl().apply {
+            this.chapter_id = chapter.id!!
         }
     }
 }

app/src/main/java/eu/kanade/tachiyomi/data/database/models/HistoryImpl.kt

@@ -0,0 +1,27 @@
+package eu.kanade.tachiyomi.data.database.models
+
+/**
+ * Object containing the history statistics of a chapter
+ */
+class HistoryImpl : History {
+
+    /**
+     * Id of history object.
+     */
+    override var id: Long? = null
+
+    /**
+     * Chapter id of history object.
+     */
+    override var chapter_id: Long = 0
+
+    /**
+     * Last time chapter was read in time long format
+     */
+    override var last_read: Long = 0
+
+    /**
+     * Total time chapter was read - todo not yet implemented
+     */
+    override var time_read: Long = 0
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/ChapterQueries.kt

@@ -6,6 +6,7 @@ import eu.kanade.tachiyomi.data.database.DbProvider
 import eu.kanade.tachiyomi.data.database.models.Chapter
 import eu.kanade.tachiyomi.data.database.models.Manga
 import eu.kanade.tachiyomi.data.database.models.MangaChapter
+import eu.kanade.tachiyomi.data.database.resolvers.ChapterBackupPutResolver
 import eu.kanade.tachiyomi.data.database.resolvers.ChapterProgressPutResolver
 import eu.kanade.tachiyomi.data.database.resolvers.ChapterSourceOrderPutResolver
 import eu.kanade.tachiyomi.data.database.resolvers.MangaChapterGetResolver
@@ -42,6 +43,16 @@ interface ChapterQueries : DbProvider {
                     .build())
             .prepare()
 
+    fun getChapter(url: String) = db.get()
+            .`object`(Chapter::class.java)
+            .withQuery(Query.builder()
+                    .table(ChapterTable.TABLE)
+                    .where("${ChapterTable.COL_URL} = ?")
+                    .whereArgs(url)
+                    .build())
+            .prepare()
+
+
     fun insertChapter(chapter: Chapter) = db.put().`object`(chapter).prepare()
 
     fun insertChapters(chapters: List<Chapter>) = db.put().objects(chapters).prepare()
@@ -50,6 +61,11 @@ interface ChapterQueries : DbProvider {
 
     fun deleteChapters(chapters: List<Chapter>) = db.delete().objects(chapters).prepare()
 
+    fun updateChaptersBackup(chapters: List<Chapter>) = db.put()
+            .objects(chapters)
+            .withPutResolver(ChapterBackupPutResolver())
+            .prepare()
+
     fun updateChapterProgress(chapter: Chapter) = db.put()
             .`object`(chapter)
             .withPutResolver(ChapterProgressPutResolver())

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/HistoryQueries.kt

@@ -1,5 +1,6 @@
 package eu.kanade.tachiyomi.data.database.queries
 
+import com.pushtorefresh.storio.sqlite.queries.DeleteQuery
 import com.pushtorefresh.storio.sqlite.queries.RawQuery
 import eu.kanade.tachiyomi.data.database.DbProvider
 import eu.kanade.tachiyomi.data.database.models.History
@@ -40,6 +41,15 @@ interface HistoryQueries : DbProvider {
                     .build())
             .prepare()
 
+    fun getHistoryByChapterUrl(chapterUrl: String) = db.get()
+            .`object`(History::class.java)
+            .withQuery(RawQuery.builder()
+                    .query(getHistoryByChapterUrl())
+                    .args(chapterUrl)
+                    .observesTables(HistoryTable.TABLE)
+                    .build())
+            .prepare()
+
     /**
      * Updates the history last read.
      * Inserts history object if not yet in database
@@ -59,4 +69,18 @@ interface HistoryQueries : DbProvider {
             .objects(historyList)
             .withPutResolver(HistoryLastReadPutResolver())
             .prepare()
+
+    fun deleteHistory() = db.delete()
+            .byQuery(DeleteQuery.builder()
+                    .table(HistoryTable.TABLE)
+                    .build())
+            .prepare()
+
+    fun deleteHistoryNoLastRead() = db.delete()
+            .byQuery(DeleteQuery.builder()
+                    .table(HistoryTable.TABLE)
+                    .where("${HistoryTable.COL_LAST_READ} = ?")
+                    .whereArgs(0)
+                    .build())
+            .prepare()
 }

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/MangaQueries.kt

@@ -84,6 +84,12 @@ interface MangaQueries : DbProvider {
                     .build())
             .prepare()
 
+    fun deleteMangas() = db.delete()
+            .byQuery(DeleteQuery.builder()
+                    .table(MangaTable.TABLE)
+                    .build())
+            .prepare()
+
     fun getLastReadManga() = db.get()
             .listOfObjects(Manga::class.java)
             .withQuery(RawQuery.builder()

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/RawQueries.kt

@@ -73,6 +73,14 @@ fun getHistoryByMangaId() = """
     WHERE ${Chapter.TABLE}.${Chapter.COL_MANGA_ID} = ? AND ${History.TABLE}.${History.COL_CHAPTER_ID} = ${Chapter.TABLE}.${Chapter.COL_ID}
 """
 
+fun getHistoryByChapterUrl() = """
+    SELECT ${History.TABLE}.*
+    FROM ${History.TABLE}
+    JOIN ${Chapter.TABLE}
+    ON ${History.TABLE}.${History.COL_CHAPTER_ID} = ${Chapter.TABLE}.${Chapter.COL_ID}
+    WHERE ${Chapter.TABLE}.${Chapter.COL_URL} = ? AND ${History.TABLE}.${History.COL_CHAPTER_ID} = ${Chapter.TABLE}.${Chapter.COL_ID}
+"""
+
 fun getLastReadMangaQuery() = """
     SELECT ${Manga.TABLE}.*, MAX(${History.TABLE}.${History.COL_LAST_READ}) AS max
     FROM ${Manga.TABLE}

app/src/main/java/eu/kanade/tachiyomi/data/database/resolvers/ChapterBackupPutResolver.kt

@@ -0,0 +1,35 @@
+package eu.kanade.tachiyomi.data.database.resolvers
+
+import android.content.ContentValues
+import com.pushtorefresh.storio.sqlite.StorIOSQLite
+import com.pushtorefresh.storio.sqlite.operations.put.PutResolver
+import com.pushtorefresh.storio.sqlite.operations.put.PutResult
+import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
+import eu.kanade.tachiyomi.data.database.inTransactionReturn
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable
+
+class ChapterBackupPutResolver : PutResolver<Chapter>() {
+
+    override fun performPut(db: StorIOSQLite, chapter: Chapter) = db.inTransactionReturn {
+        val updateQuery = mapToUpdateQuery(chapter)
+        val contentValues = mapToContentValues(chapter)
+
+        val numberOfRowsUpdated = db.lowLevel().update(updateQuery, contentValues)
+        PutResult.newUpdateResult(numberOfRowsUpdated, updateQuery.table())
+    }
+
+    fun mapToUpdateQuery(chapter: Chapter) = UpdateQuery.builder()
+            .table(ChapterTable.TABLE)
+            .where("${ChapterTable.COL_URL} = ?")
+            .whereArgs(chapter.url)
+            .build()
+
+    fun mapToContentValues(chapter: Chapter) = ContentValues(3).apply {
+        put(ChapterTable.COL_READ, chapter.read)
+        put(ChapterTable.COL_BOOKMARK, chapter.bookmark)
+        put(ChapterTable.COL_LAST_PAGE_READ, chapter.last_page_read)
+    }
+
+}
+

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadNotifier.kt

@@ -11,6 +11,7 @@ import eu.kanade.tachiyomi.data.notification.NotificationHandler
 import eu.kanade.tachiyomi.data.notification.NotificationReceiver
 import eu.kanade.tachiyomi.util.chop
 import eu.kanade.tachiyomi.util.notificationManager
+import java.util.regex.Pattern
 
 /**
  * DownloadNotifier is used to show notifications when downloading one or multiple chapters.
@@ -145,7 +146,8 @@ internal class DownloadNotifier(private val context: Context) {
             } else {
                 download?.let {
                     val title = it.manga.title.chop(15)
-                    val chapter = download.chapter.name.replaceFirst("$title[\\s]*[-]*[\\s]*".toRegex(RegexOption.IGNORE_CASE), "")
+                    val quotedTitle = Pattern.quote(title)
+                    val chapter = download.chapter.name.replaceFirst("$quotedTitle[\\s]*[-]*[\\s]*".toRegex(RegexOption.IGNORE_CASE), "")
                     setContentTitle("$title - $chapter".chop(30))
                     setContentText(context.getString(R.string.chapter_downloading_progress)
                             .format(it.downloadedImages, it.pages!!.size))
@@ -202,7 +204,8 @@ internal class DownloadNotifier(private val context: Context) {
         // Create notification.
         with(notification) {
             val title = download.manga.title.chop(15)
-            val chapter = download.chapter.name.replaceFirst("$title[\\s]*[-]*[\\s]*".toRegex(RegexOption.IGNORE_CASE), "")
+            val quotedTitle = Pattern.quote(title)
+            val chapter = download.chapter.name.replaceFirst("$quotedTitle[\\s]*[-]*[\\s]*".toRegex(RegexOption.IGNORE_CASE), "")
             setContentTitle("$title - $chapter".chop(30))
             setContentText(context.getString(R.string.update_check_notification_download_complete))
             setSmallIcon(android.R.drawable.stat_sys_download_done)

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateService.kt

@@ -1,10 +1,12 @@
 package eu.kanade.tachiyomi.data.library
 
+import android.app.Notification
 import android.app.PendingIntent
 import android.app.Service
 import android.content.Context
 import android.content.Intent
 import android.graphics.BitmapFactory
+import android.os.Build
 import android.os.IBinder
 import android.os.PowerManager
 import android.support.v4.app.NotificationCompat
@@ -28,7 +30,9 @@ import eu.kanade.tachiyomi.util.*
 import rx.Observable
 import rx.Subscription
 import rx.schedulers.Schedulers
-import uy.kohesive.injekt.injectLazy
+import timber.log.Timber
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.get
 import java.util.*
 import java.util.concurrent.atomic.AtomicInteger
 
@@ -40,24 +44,12 @@ import java.util.concurrent.atomic.AtomicInteger
  * progress of the update, and if case of an unexpected error, this service will be silently
  * destroyed.
  */
-class LibraryUpdateService : Service() {
-
-    /**
-     * Database helper.
-     */
-    val db: DatabaseHelper by injectLazy()
-
-    /**
-     * Source manager.
-     */
-    val sourceManager: SourceManager by injectLazy()
-
-    /**
-     * Preferences.
-     */
-    val preferences: PreferencesHelper by injectLazy()
-
-    val downloadManager: DownloadManager by injectLazy()
+class LibraryUpdateService(
+        val db: DatabaseHelper = Injekt.get(),
+        val sourceManager: SourceManager = Injekt.get(),
+        val preferences: PreferencesHelper = Injekt.get(),
+        val downloadManager: DownloadManager = Injekt.get()
+) : Service() {
 
     /**
      * Wake lock that will be held until the service is destroyed.
@@ -72,18 +64,27 @@ class LibraryUpdateService : Service() {
     /**
      * Pending intent of action that cancels the library update
      */
-    private val cancelPendingIntent by lazy {NotificationReceiver.cancelLibraryUpdatePendingBroadcast(this)}
+    private val cancelIntent by lazy {
+        NotificationReceiver.cancelLibraryUpdatePendingBroadcast(this)
+    }
 
     /**
-     * Id of the library update notification.
+     * Bitmap of the app for notifications.
      */
-    private val notificationId: Int
-        get() = Constants.NOTIFICATION_LIBRARY_ID
-
     private val notificationBitmap by lazy {
         BitmapFactory.decodeResource(resources, R.mipmap.ic_launcher)
     }
 
+    /**
+     * Cached progress notification to avoid creating a lot.
+     */
+    private val progressNotification by lazy { NotificationCompat.Builder(this)
+            .setSmallIcon(R.drawable.ic_refresh_white_24dp_img)
+            .setLargeIcon(notificationBitmap)
+            .setOngoing(true)
+            .addAction(R.drawable.ic_clear_grey_24dp_img, getString(android.R.string.cancel), cancelIntent)
+    }
+
     companion object {
 
         /**
@@ -141,16 +142,20 @@ class LibraryUpdateService : Service() {
      */
     override fun onCreate() {
         super.onCreate()
-        createAndAcquireWakeLock()
+        wakeLock = (getSystemService(Context.POWER_SERVICE) as PowerManager).newWakeLock(
+                PowerManager.PARTIAL_WAKE_LOCK, "LibraryUpdateService:WakeLock")
+        wakeLock.acquire()
     }
 
     /**
-     * Method called when the service is destroyed. It destroys the running subscription, resets
-     * the alarm and release the wake lock.
+     * Method called when the service is destroyed. It destroys subscriptions and releases the wake
+     * lock.
      */
     override fun onDestroy() {
         subscription?.unsubscribe()
-        destroyWakeLock()
+        if (wakeLock.isHeld) {
+            wakeLock.release()
+        }
         super.onDestroy()
     }
 
@@ -189,7 +194,7 @@ class LibraryUpdateService : Service() {
                 .subscribeOn(Schedulers.io())
                 .subscribe({
                 }, {
-                    showNotification(getString(R.string.notification_update_error), "")
+                    Timber.e(it)
                     stopSelf(startId)
                 }, {
                     stopSelf(startId)
@@ -210,13 +215,13 @@ class LibraryUpdateService : Service() {
         var listToUpdate = if (categoryId != -1)
             db.getLibraryMangas().executeAsBlocking().filter { it.category == categoryId }
         else {
-            val categoriesToUpdate = preferences.libraryUpdateCategories().getOrDefault().map { it.toInt() }
+            val categoriesToUpdate = preferences.libraryUpdateCategories().getOrDefault().map(String::toInt)
             if (categoriesToUpdate.isNotEmpty())
                 db.getLibraryMangas().executeAsBlocking()
                         .filter { it.category in categoriesToUpdate }
                         .distinctBy { it.id }
             else
-                db.getFavoriteMangas().executeAsBlocking().distinctBy { it.id }
+                db.getLibraryMangas().executeAsBlocking().distinctBy { it.id }
         }
 
         if (!intent.getBooleanExtra(UPDATE_DETAILS, false) && preferences.updateOnlyNonCompleted()) {
@@ -238,13 +243,21 @@ class LibraryUpdateService : Service() {
     fun updateChapterList(mangaToUpdate: List<Manga>): Observable<Manga> {
         // Initialize the variables holding the progress of the updates.
         val count = AtomicInteger(0)
+        // List containing new updates
         val newUpdates = ArrayList<Manga>()
+        // list containing failed updates
         val failedUpdates = ArrayList<Manga>()
+        // List containing categories that get included in downloads.
+        val categoriesToDownload = preferences.downloadNewCategories().getOrDefault().map(String::toInt)
+        // Boolean to determine if user wants to automatically download new chapters.
+        val downloadNew = preferences.downloadNew().getOrDefault()
+        // Boolean to determine if DownloadManager has downloads
+        var hasDownloads = false
 
         // Emit each manga and update it sequentially.
         return Observable.from(mangaToUpdate)
                 // Notify manga that will update.
-                .doOnNext { showProgressNotification(it, count.andIncrement, mangaToUpdate.size, cancelPendingIntent) }
+                .doOnNext { showProgressNotification(it, count.andIncrement, mangaToUpdate.size) }
                 // Update the chapters of the manga.
                 .concatMap { manga ->
                     updateManga(manga)
@@ -254,10 +267,13 @@ class LibraryUpdateService : Service() {
                                 Pair(emptyList<Chapter>(), emptyList<Chapter>())
                             }
                             // Filter out mangas without new chapters (or failed).
-                            .filter { pair -> pair.first.size > 0 }
+                            .filter { pair -> pair.first.isNotEmpty() }
                             .doOnNext {
-                                if (preferences.downloadNew()) {
+                                if (downloadNew && (categoriesToDownload.isEmpty() ||
+                                        manga.category in categoriesToDownload)) {
+
                                     downloadChapters(manga, it.first)
+                                    hasDownloads = true
                                 }
                             }
                             // Convert to the manga that contains new chapters.
@@ -273,14 +289,18 @@ class LibraryUpdateService : Service() {
                 }
                 // Notify result of the overall update.
                 .doOnCompleted {
-                    if (newUpdates.isEmpty()) {
-                        cancelNotification()
-                    } else {
-                        if (preferences.downloadNew()) {
+                    if (newUpdates.isNotEmpty()) {
+                        showResultNotification(newUpdates)
+                        if (downloadNew && hasDownloads) {
                             DownloadService.start(this)
                         }
-                        showResultNotification(newUpdates, failedUpdates)
                     }
+
+                    if (failedUpdates.isNotEmpty()) {
+                        Timber.e("Failed updating: ${failedUpdates.map { it.title }}")
+                    }
+
+                    cancelProgressNotification()
                 }
     }
 
@@ -321,7 +341,7 @@ class LibraryUpdateService : Service() {
         // Emit each manga and update it sequentially.
         return Observable.from(mangaToUpdate)
                 // Notify manga that will update.
-                .doOnNext { showProgressNotification(it, count.andIncrement, mangaToUpdate.size, cancelPendingIntent) }
+                .doOnNext { showProgressNotification(it, count.andIncrement, mangaToUpdate.size) }
                 // Update the details of the manga.
                 .concatMap { manga ->
                     val source = sourceManager.get(manga.source) as? HttpSource
@@ -336,73 +356,10 @@ class LibraryUpdateService : Service() {
                             .onErrorReturn { manga }
                 }
                 .doOnCompleted {
-                    cancelNotification()
+                    cancelProgressNotification()
                 }
     }
 
-    /**
-     * Returns the text that will be displayed in the notification when there are new chapters.
-     *
-     * @param updates a list of manga that contains new chapters.
-     * @param failedUpdates a list of manga that failed to update.
-     * @return the body of the notification to display.
-     */
-    private fun getUpdatedMangasBody(updates: List<Manga>, failedUpdates: List<Manga>): String {
-        return buildString {
-            if (updates.isEmpty()) {
-                append(getString(R.string.notification_no_new_chapters))
-                append("\n")
-            } else {
-                append(getString(R.string.notification_new_chapters))
-                for (manga in updates) {
-                    append("\n")
-                    append(manga.title.chop(45))
-                }
-            }
-            if (!failedUpdates.isEmpty()) {
-                append("\n\n")
-                append(getString(R.string.notification_manga_update_failed))
-                for (manga in failedUpdates) {
-                    append("\n")
-                    append(manga.title.chop(45))
-                }
-            }
-        }
-    }
-
-    /**
-     * Creates and acquires a wake lock until the library is updated.
-     */
-    private fun createAndAcquireWakeLock() {
-        wakeLock = (getSystemService(Context.POWER_SERVICE) as PowerManager).newWakeLock(
-                PowerManager.PARTIAL_WAKE_LOCK, "LibraryUpdateService:WakeLock")
-        wakeLock.acquire()
-    }
-
-    /**
-     * Releases the wake lock if it's held.
-     */
-    private fun destroyWakeLock() {
-        if (wakeLock.isHeld) {
-            wakeLock.release()
-        }
-    }
-
-    /**
-     * Shows the notification with the given title and body.
-     *
-     * @param title the title of the notification.
-     * @param body the body of the notification.
-     */
-    private fun showNotification(title: String, body: String) {
-        notificationManager.notify(notificationId, notification {
-            setSmallIcon(R.drawable.ic_refresh_white_24dp_img)
-            setLargeIcon(notificationBitmap)
-            setContentTitle(title)
-            setContentText(body)
-        })
-    }
-
     /**
      * Shows the notification containing the currently updating manga and the progress.
      *
@@ -410,52 +367,66 @@ class LibraryUpdateService : Service() {
      * @param current the current progress.
      * @param total the total progress.
      */
-    private fun showProgressNotification(manga: Manga, current: Int, total: Int, cancelIntent: PendingIntent) {
-        notificationManager.notify(notificationId, notification {
-            setSmallIcon(R.drawable.ic_refresh_white_24dp_img)
-            setLargeIcon(notificationBitmap)
-            setContentTitle(manga.title)
-            setProgress(total, current, false)
-            setOngoing(true)
-            addAction(R.drawable.ic_clear_grey_24dp_img, getString(android.R.string.cancel), cancelIntent)
-        })
+    private fun showProgressNotification(manga: Manga, current: Int, total: Int) {
+        notificationManager.notify(Constants.NOTIFICATION_LIBRARY_PROGRESS_ID, progressNotification
+                .setContentTitle(manga.title)
+                .setProgress(total, current, false)
+                .build())
     }
 
-
     /**
      * Shows the notification containing the result of the update done by the service.
      *
      * @param updates a list of manga with new updates.
-     * @param failed a list of manga that failed to update.
      */
-    private fun showResultNotification(updates: List<Manga>, failed: List<Manga>) {
-        val title = getString(R.string.notification_update_completed)
-        val body = getUpdatedMangasBody(updates, failed)
+    private fun showResultNotification(updates: List<Manga>) {
+        val newUpdates = updates.map { it.title.chop(45) }.toMutableSet()
 
-        notificationManager.notify(notificationId, notification {
-            setSmallIcon(R.drawable.ic_refresh_white_24dp_img)
+        // Append new chapters from a previous, existing notification
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            val previousNotification = notificationManager.activeNotifications
+                    .find { it.id == Constants.NOTIFICATION_LIBRARY_RESULT_ID }
+
+            if (previousNotification != null) {
+                val oldUpdates = previousNotification.notification.extras
+                        .getString(Notification.EXTRA_BIG_TEXT)
+
+                if (!oldUpdates.isNullOrEmpty()) {
+                    newUpdates += oldUpdates.split("\n")
+                }
+            }
+        }
+
+        notificationManager.notify(Constants.NOTIFICATION_LIBRARY_RESULT_ID, notification {
+            setSmallIcon(R.drawable.ic_book_white_24dp)
             setLargeIcon(notificationBitmap)
-            setContentTitle(title)
-            setStyle(NotificationCompat.BigTextStyle().bigText(body))
-            setContentIntent(notificationIntent)
+            setContentTitle(getString(R.string.notification_new_chapters))
+            if (newUpdates.size > 1) {
+                setContentText(getString(R.string.notification_new_chapters_text, newUpdates.size))
+                setStyle(NotificationCompat.BigTextStyle().bigText(newUpdates.joinToString("\n")))
+            } else {
+                setContentText(newUpdates.first())
+            }
+            priority = NotificationCompat.PRIORITY_HIGH
+            setContentIntent(getNotificationIntent())
             setAutoCancel(true)
         })
     }
 
     /**
-     * Cancels the notification.
+     * Cancels the progress notification.
      */
-    private fun cancelNotification() {
-        notificationManager.cancel(notificationId)
+    private fun cancelProgressNotification() {
+        notificationManager.cancel(Constants.NOTIFICATION_LIBRARY_PROGRESS_ID)
     }
 
     /**
-     * Property that returns an intent to open the main activity.
+     * Returns an intent to open the main activity.
      */
-    private val notificationIntent: PendingIntent
-        get() {
-            val intent = Intent(this, MainActivity::class.java)
-            intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_SINGLE_TOP
-            return PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
-        }
+    private fun getNotificationIntent(): PendingIntent {
+        val intent = Intent(this, MainActivity::class.java)
+        intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_SINGLE_TOP
+        return PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
+    }
+
 }

app/src/main/java/eu/kanade/tachiyomi/data/notification/NotificationHandler.kt

@@ -3,8 +3,6 @@ package eu.kanade.tachiyomi.data.notification
 import android.app.PendingIntent
 import android.content.Context
 import android.content.Intent
-import android.support.v4.content.FileProvider
-import eu.kanade.tachiyomi.BuildConfig
 import eu.kanade.tachiyomi.ui.download.DownloadActivity
 import eu.kanade.tachiyomi.util.getUriCompat
 import java.io.File
@@ -33,7 +31,7 @@ object NotificationHandler {
      */
     internal fun openImagePendingActivity(context: Context, file: File): PendingIntent {
         val intent = Intent(Intent.ACTION_VIEW).apply {
-            val uri = FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".provider", file)
+            val uri = file.getUriCompat(context)
             setDataAndType(uri, "image/*")
             flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_GRANT_READ_URI_PERMISSION
         }

app/src/main/java/eu/kanade/tachiyomi/data/notification/NotificationReceiver.kt

@@ -14,7 +14,7 @@ import eu.kanade.tachiyomi.data.download.DownloadManager
 import eu.kanade.tachiyomi.data.download.DownloadService
 import eu.kanade.tachiyomi.data.library.LibraryUpdateService
 import eu.kanade.tachiyomi.ui.reader.ReaderActivity
-import eu.kanade.tachiyomi.util.deleteIfExists
+import eu.kanade.tachiyomi.util.DiskUtil
 import eu.kanade.tachiyomi.util.getUriCompat
 import eu.kanade.tachiyomi.util.notificationManager
 import eu.kanade.tachiyomi.util.toast
@@ -48,7 +48,7 @@ class NotificationReceiver : BroadcastReceiver() {
             ACTION_DELETE_IMAGE -> deleteImage(context, intent.getStringExtra(EXTRA_FILE_LOCATION),
                     intent.getIntExtra(EXTRA_NOTIFICATION_ID, -1))
             // Cancel library update and dismiss notification
-            ACTION_CANCEL_LIBRARY_UPDATE -> cancelLibraryUpdate(context, Constants.NOTIFICATION_LIBRARY_ID)
+            ACTION_CANCEL_LIBRARY_UPDATE -> cancelLibraryUpdate(context, Constants.NOTIFICATION_LIBRARY_PROGRESS_ID)
             // Open reader activity
             ACTION_OPEN_CHAPTER -> {
                 openChapter(context, intent.getLongExtra(EXTRA_MANGA_ID, -1),
@@ -120,7 +120,10 @@ class NotificationReceiver : BroadcastReceiver() {
         dismissNotification(context, notificationId)
 
         // Delete file
-        File(path).deleteIfExists()
+        val file = File(path)
+        file.delete()
+
+        DiskUtil.scanMedia(context, file)
     }
 
     /**
@@ -180,7 +183,7 @@ class NotificationReceiver : BroadcastReceiver() {
             val intent = Intent(context, NotificationReceiver::class.java).apply {
                 action = ACTION_RESUME_DOWNLOADS
             }
-            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_ONE_SHOT)
+            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
         }
 
         /**
@@ -193,7 +196,7 @@ class NotificationReceiver : BroadcastReceiver() {
             val intent = Intent(context, NotificationReceiver::class.java).apply {
                 action = ACTION_CLEAR_DOWNLOADS
             }
-            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_ONE_SHOT)
+            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
         }
 
         /**
@@ -208,7 +211,7 @@ class NotificationReceiver : BroadcastReceiver() {
                 action = ACTION_DISMISS_NOTIFICATION
                 putExtra(EXTRA_NOTIFICATION_ID, notificationId)
             }
-            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_ONE_SHOT)
+            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
         }
 
         /**
@@ -225,7 +228,7 @@ class NotificationReceiver : BroadcastReceiver() {
                 putExtra(EXTRA_FILE_LOCATION, path)
                 putExtra(EXTRA_NOTIFICATION_ID, notificationId)
             }
-            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_ONE_SHOT)
+            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
         }
 
         /**
@@ -242,7 +245,7 @@ class NotificationReceiver : BroadcastReceiver() {
                 putExtra(EXTRA_FILE_LOCATION, path)
                 putExtra(EXTRA_NOTIFICATION_ID, notificationId)
             }
-            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_ONE_SHOT)
+            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
         }
 
         /**
@@ -258,7 +261,7 @@ class NotificationReceiver : BroadcastReceiver() {
                 putExtra(EXTRA_MANGA_ID, manga.id)
                 putExtra(EXTRA_CHAPTER_ID, chapter.id)
             }
-            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_ONE_SHOT)
+            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
         }
 
         /**
@@ -271,7 +274,7 @@ class NotificationReceiver : BroadcastReceiver() {
             val intent = Intent(context, NotificationReceiver::class.java).apply {
                 action = ACTION_CANCEL_LIBRARY_UPDATE
             }
-            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_ONE_SHOT)
+            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
         }
     }
-}
+}

app/src/main/java/eu/kanade/tachiyomi/data/preference/PreferenceKeys.kt

@@ -65,12 +65,18 @@ class PreferenceKeys(context: Context) {
 
     val enabledLanguages = context.getString(R.string.pref_source_languages)
 
+    val backupDirectory = context.getString(R.string.pref_backup_directory_key)
+
     val downloadsDirectory = context.getString(R.string.pref_download_directory_key)
 
     val downloadThreads = context.getString(R.string.pref_download_slots_key)
 
     val downloadOnlyOverWifi = context.getString(R.string.pref_download_only_over_wifi_key)
 
+    val numberOfBackups = context.getString(R.string.pref_backup_slots_key)
+
+    val backupInterval = context.getString(R.string.pref_backup_interval_key)
+
     val removeAfterReadSlots = context.getString(R.string.pref_remove_after_read_slots_key)
 
     val removeAfterMarkedAsRead = context.getString(R.string.pref_remove_after_marked_as_read_key)
@@ -93,6 +99,8 @@ class PreferenceKeys(context: Context) {
 
     val downloadNew = context.getString(R.string.pref_download_new_key)
 
+    val downloadNewCategories = context.getString(R.string.pref_download_new_categories_key)
+
     fun sourceUsername(sourceId: Long) = "pref_source_username_$sourceId"
 
     fun sourcePassword(sourceId: Long) = "pref_source_password_$sourceId"
@@ -107,4 +115,6 @@ class PreferenceKeys(context: Context) {
 
     val lang = context.getString(R.string.pref_language_key)
 
+    val defaultCategory = context.getString(R.string.default_category_key)
+
 }

app/src/main/java/eu/kanade/tachiyomi/data/preference/PreferencesHelper.kt

@@ -26,6 +26,10 @@ class PreferencesHelper(val context: Context) {
             File(Environment.getExternalStorageDirectory().absolutePath + File.separator +
                     context.getString(R.string.app_name), "downloads"))
 
+    private val defaultBackupDir = Uri.fromFile(
+            File(Environment.getExternalStorageDirectory().absolutePath + File.separator +
+                    context.getString(R.string.app_name), "backup"))
+
     fun startScreen() = prefs.getInt(keys.startScreen, 1)
 
     fun clear() = prefs.edit().clear().apply()
@@ -112,12 +116,18 @@ class PreferencesHelper(val context: Context) {
 
     fun anilistScoreType() = rxPrefs.getInteger("anilist_score_type", 0)
 
+    fun backupsDirectory() = rxPrefs.getString(keys.backupDirectory, defaultBackupDir.toString())
+
     fun downloadsDirectory() = rxPrefs.getString(keys.downloadsDirectory, defaultDownloadsDir.toString())
 
     fun downloadThreads() = rxPrefs.getInteger(keys.downloadThreads, 1)
 
     fun downloadOnlyOverWifi() = prefs.getBoolean(keys.downloadOnlyOverWifi, true)
 
+    fun numberOfBackups() = rxPrefs.getInteger(keys.numberOfBackups, 1)
+
+    fun backupInterval() = rxPrefs.getInteger(keys.backupInterval, 0)
+
     fun removeAfterReadSlots() = prefs.getInt(keys.removeAfterReadSlots, -1)
 
     fun removeAfterMarkedAsRead() = prefs.getBoolean(keys.removeAfterMarkedAsRead, false)
@@ -142,8 +152,12 @@ class PreferencesHelper(val context: Context) {
 
     fun hiddenCatalogues() = rxPrefs.getStringSet("hidden_catalogues", emptySet())
 
-    fun downloadNew() = prefs.getBoolean(keys.downloadNew, false)
+    fun downloadNew() = rxPrefs.getBoolean(keys.downloadNew, false)
+
+    fun downloadNewCategories() = rxPrefs.getStringSet(keys.downloadNewCategories, emptySet())
 
     fun lang() = prefs.getString(keys.lang, "")
 
+    fun defaultCategory() = prefs.getInt(keys.defaultCategory, -1)
+
 }

app/src/main/java/eu/kanade/tachiyomi/data/track/kitsu/Kitsu.kt

@@ -9,6 +9,7 @@ import eu.kanade.tachiyomi.data.track.TrackService
 import rx.Completable
 import rx.Observable
 import uy.kohesive.injekt.injectLazy
+import java.text.DecimalFormat
 
 class Kitsu(private val context: Context, id: Int) : TrackService(id) {
 
@@ -55,11 +56,17 @@ class Kitsu(private val context: Context, id: Int) : TrackService(id) {
     }
 
     override fun getScoreList(): List<String> {
-        return IntRange(0, 10).map { (it.toFloat() / 2).toString() }
+        val df = DecimalFormat("0.#")
+        return listOf("0") + IntRange(2, 20).map { df.format(it / 2f) }
+    }
+
+    override fun indexToScore(index: Int): Float {
+        return if (index > 0) (index + 1) / 2f else 0f
     }
 
     override fun displayScore(track: Track): String {
-        return track.toKitsuScore()
+        val df = DecimalFormat("0.#")
+        return df.format(track.score)
     }
 
     override fun add(track: Track): Observable<Track> {

app/src/main/java/eu/kanade/tachiyomi/data/track/kitsu/KitsuApi.kt

@@ -1,6 +1,7 @@
 package eu.kanade.tachiyomi.data.track.kitsu
 
 import com.github.salomonbrys.kotson.*
+import com.google.gson.GsonBuilder
 import com.google.gson.JsonObject
 import eu.kanade.tachiyomi.data.database.models.Track
 import eu.kanade.tachiyomi.network.POST
@@ -17,7 +18,7 @@ class KitsuApi(private val client: OkHttpClient, interceptor: KitsuInterceptor)
     private val rest = Retrofit.Builder()
             .baseUrl(baseUrl)
             .client(client.newBuilder().addInterceptor(interceptor).build())
-            .addConverterFactory(GsonConverterFactory.create())
+            .addConverterFactory(GsonConverterFactory.create(GsonBuilder().serializeNulls().create()))
             .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
             .build()
             .create(KitsuApi.Rest::class.java)
@@ -65,7 +66,7 @@ class KitsuApi(private val client: OkHttpClient, interceptor: KitsuInterceptor)
                 "attributes" to jsonObject(
                     "status" to track.toKitsuStatus(),
                     "progress" to track.last_chapter_read,
-                    "rating" to track.toKitsuScore()
+                    "ratingTwenty" to track.toKitsuScore()
                 )
             )
             // @formatter:on

app/src/main/java/eu/kanade/tachiyomi/data/track/kitsu/KitsuModels.kt

@@ -23,13 +23,13 @@ open class KitsuManga(obj: JsonObject) {
 class KitsuLibManga(obj: JsonObject, manga: JsonObject) : KitsuManga(manga) {
     val remoteId by obj.byInt("id")
     val status by obj["attributes"].byString
-    val rating = obj["attributes"].obj.get("rating").nullString
+    val ratingTwenty = obj["attributes"].obj.get("ratingTwenty").nullString
     val progress by obj["attributes"].byInt
 
     override fun toTrack() = super.toTrack().apply {
         remote_id = remoteId
         status = toTrackStatus()
-        score = rating?.let { it.toFloat() * 2 } ?: 0f
+        score = ratingTwenty?.let { it.toInt() / 2f } ?: 0f
         last_chapter_read = progress
     }
 
@@ -53,6 +53,6 @@ fun Track.toKitsuStatus() = when (status) {
     else -> throw Exception("Unknown status")
 }
 
-fun Track.toKitsuScore(): String {
-    return if (score > 0) (score / 2).toString() else ""
+fun Track.toKitsuScore(): String? {
+    return if (score > 0) (score * 2).toInt().toString() else null
 }

app/src/main/java/eu/kanade/tachiyomi/data/updater/UpdateDownloaderService.kt

@@ -6,7 +6,6 @@ import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 import android.content.IntentFilter
-import android.os.Build
 import eu.kanade.tachiyomi.BuildConfig
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.network.NetworkHelper
@@ -59,14 +58,21 @@ class UpdateDownloaderService : IntentService(UpdateDownloaderService::class.jav
     fun downloadApk(url: String) {
         // Show notification download starting.
         sendInitialBroadcast()
-        // Progress of the download
-        var savedProgress = 0
 
         val progressListener = object : ProgressListener {
+
+            // Progress of the download
+            var savedProgress = 0
+
+            // Keep track of the last notification sent to avoid posting too many.
+            var lastTick = 0L
+
             override fun update(bytesRead: Long, contentLength: Long, done: Boolean) {
                 val progress = (100 * bytesRead / contentLength).toInt()
-                if (progress > savedProgress) {
+                val currentTime = System.currentTimeMillis()
+                if (progress > savedProgress && currentTime - 200 > lastTick) {
                     savedProgress = progress
+                    lastTick = currentTime
                     sendProgressBroadcast(progress)
                 }
             }
@@ -112,11 +118,7 @@ class UpdateDownloaderService : IntentService(UpdateDownloaderService::class.jav
             putExtra(UpdateDownloaderReceiver.EXTRA_ACTION, UpdateDownloaderReceiver.NOTIFICATION_UPDATER_PROGRESS)
             putExtra(UpdateDownloaderReceiver.EXTRA_PROGRESS, progress)
         }
-        // Prevents not showing of install notification TODO weird Android N bug. Find out what goes wrong
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N || progress <= 95) {
-            // Show download progress notification.
-            sendLocalBroadcastSync(intent)
-        }
+        sendLocalBroadcastSync(intent)
     }
 
     /**

app/src/main/java/eu/kanade/tachiyomi/network/OkHttpExtensions.kt

@@ -10,7 +10,7 @@ import rx.Subscription
 import java.util.concurrent.atomic.AtomicBoolean
 
 fun Call.asObservable(): Observable<Response> {
-    return Observable.create { subscriber ->
+    return Observable.unsafeCreate { subscriber ->
         // Since Call is a one-shot type, clone it for each new subscriber.
         val call = clone()
 

app/src/main/java/eu/kanade/tachiyomi/source/online/YamlHttpSource.kt

@@ -176,8 +176,7 @@ class YamlHttpSource(mappings: Map<*, *>) : HttpSource() {
 
         val pages = mutableListOf<Page>()
 
-        // TODO lazy initialization in Kotlin 1.1
-        val document = Jsoup.parse(body, url)
+        val document by lazy { Jsoup.parse(body, url) }
 
         with(map.pages) {
             // Capture a list of values where page urls will be resolved.

app/src/main/java/eu/kanade/tachiyomi/source/online/english/Kissmanga.kt

@@ -1,5 +1,6 @@
 package eu.kanade.tachiyomi.source.online.english
 
+import com.squareup.duktape.Duktape
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.network.POST
 import eu.kanade.tachiyomi.source.model.*
@@ -114,15 +115,37 @@ class Kissmanga : ParsedHttpSource() {
     override fun pageListRequest(chapter: SChapter) = POST(baseUrl + chapter.url, headers)
 
     override fun pageListParse(response: Response): List<Page> {
-        val pages = mutableListOf<Page>()
-        //language=RegExp
-        val p = Pattern.compile("""lstImages.push\("(.+?)"""")
-        val m = p.matcher(response.body().string())
+        val body = response.body().string()
 
-        var i = 0
-        while (m.find()) {
-            pages.add(Page(i++, "", m.group(1)))
+        val pages = mutableListOf<Page>()
+
+        // Kissmanga now encrypts the urls, so we need to execute these two scripts in JS.
+        val ca = client.newCall(GET("$baseUrl/Scripts/ca.js", headers)).execute().body().string()
+        val lo = client.newCall(GET("$baseUrl/Scripts/lo.js", headers)).execute().body().string()
+
+        Duktape.create().use {
+            it.evaluate(ca)
+            it.evaluate(lo)
+
+            // There are two functions in an inline script needed to decrypt the urls. We find and
+            // execute them.
+            var p = Pattern.compile("(.*CryptoJS.*)")
+            var m = p.matcher(body)
+            while (m.find()) {
+                it.evaluate(m.group(1))
+            }
+
+            // Finally find all the urls and decrypt them in JS.
+            p = Pattern.compile("""lstImages.push\((.*)\);""")
+            m = p.matcher(body)
+
+            var i = 0
+            while (m.find()) {
+                val url = it.evaluate(m.group(1)) as String
+                pages.add(Page(i++, "", url))
+            }
         }
+
         return pages
     }
 

app/src/main/java/eu/kanade/tachiyomi/source/online/english/Mangahere.kt

@@ -152,6 +152,11 @@ class Mangahere : ParsedHttpSource() {
     }
 
     override fun pageListParse(document: Document): List<Page> {
+        val licensedError = document.select(".mangaread_error > .mt10").first()
+        if (licensedError != null) {
+            throw Exception(licensedError.text())
+        }
+
         val pages = mutableListOf<Page>()
         document.select("select.wid60").first()?.getElementsByTag("option")?.forEach {
             pages.add(Page(pages.size, it.attr("value")))

app/src/main/java/eu/kanade/tachiyomi/source/online/english/Mangasee.kt

@@ -4,6 +4,7 @@ import eu.kanade.tachiyomi.network.POST
 import eu.kanade.tachiyomi.source.model.*
 import eu.kanade.tachiyomi.source.online.ParsedHttpSource
 import okhttp3.FormBody
+import okhttp3.Headers
 import okhttp3.HttpUrl
 import okhttp3.Request
 import org.jsoup.nodes.Document
@@ -27,11 +28,16 @@ class Mangasee : ParsedHttpSource() {
 
     private val indexPattern = Pattern.compile("-index-(.*?)-")
 
+    private val catalogHeaders = Headers.Builder().apply {
+        add("User-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64)")
+        add("Host", "mangaseeonline.us")
+    }.build()
+
     override fun popularMangaSelector() = "div.requested > div.row"
 
     override fun popularMangaRequest(page: Int): Request {
         val (body, requestUrl) = convertQueryToPost(page, "$baseUrl/search/request.php?sortBy=popularity&sortOrder=descending")
-        return POST(requestUrl, headers, body.build())
+        return POST(requestUrl, catalogHeaders, body.build())
     }
 
     override fun popularMangaFromElement(element: Element): SManga {
@@ -74,7 +80,7 @@ class Mangasee : ParsedHttpSource() {
         if (genresNo.isNotEmpty()) url.addQueryParameter("genreNo", genresNo.joinToString(","))
 
         val (body, requestUrl) = convertQueryToPost(page, url.toString())
-        return POST(requestUrl, headers, body.build())
+        return POST(requestUrl, catalogHeaders, body.build())
     }
 
     private fun convertQueryToPost(page: Int, url: String): Pair<FormBody.Builder, String> {
@@ -164,7 +170,7 @@ class Mangasee : ParsedHttpSource() {
     override fun latestUpdatesRequest(page: Int): Request {
         val url = "http://mangaseeonline.net/home/latest.request.php"
         val (body, requestUrl) = convertQueryToPost(page, url)
-        return POST(requestUrl, headers, body.build())
+        return POST(requestUrl, catalogHeaders, body.build())
     }
 
     override fun latestUpdatesFromElement(element: Element): SManga {

app/src/main/java/eu/kanade/tachiyomi/ui/backup/BackupFragment.kt

@@ -1,163 +0,0 @@
-package eu.kanade.tachiyomi.ui.backup
-
-import android.app.Activity
-import android.app.Dialog
-import android.content.Intent
-import android.net.Uri
-import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import com.afollestad.materialdialogs.MaterialDialog
-import eu.kanade.tachiyomi.R
-import eu.kanade.tachiyomi.ui.base.activity.ActivityMixin
-import eu.kanade.tachiyomi.ui.base.fragment.BaseRxFragment
-import eu.kanade.tachiyomi.util.toast
-import kotlinx.android.synthetic.main.fragment_backup.*
-import nucleus.factory.RequiresPresenter
-import rx.Observable
-import rx.android.schedulers.AndroidSchedulers
-import rx.internal.util.SubscriptionList
-import rx.schedulers.Schedulers
-import timber.log.Timber
-import java.io.File
-import java.text.SimpleDateFormat
-import java.util.*
-
-/**
- * Fragment to create and restore backups of the application's data.
- * Uses R.layout.fragment_backup.
- */
-@RequiresPresenter(BackupPresenter::class)
-class BackupFragment : BaseRxFragment<BackupPresenter>() {
-
-    private var backupDialog: Dialog? = null
-    private var restoreDialog: Dialog? = null
-
-    private lateinit var subscriptions: SubscriptionList
-
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedState: Bundle?): View {
-        return inflater.inflate(R.layout.fragment_backup, container, false)
-    }
-
-    override fun onViewCreated(view: View, savedState: Bundle?) {
-        setToolbarTitle(getString(R.string.label_backup))
-
-        (activity as ActivityMixin).requestPermissionsOnMarshmallow()
-        subscriptions = SubscriptionList()
-
-        backup_button.setOnClickListener {
-            val today = SimpleDateFormat("yyyy-MM-dd").format(Date())
-            val file = File(activity.externalCacheDir, "tachiyomi-$today.json")
-            presenter.createBackup(file)
-
-            backupDialog = MaterialDialog.Builder(activity)
-                    .content(R.string.backup_please_wait)
-                    .progress(true, 0)
-                    .show()
-        }
-
-        restore_button.setOnClickListener {
-            val intent = Intent(Intent.ACTION_GET_CONTENT)
-            intent.addCategory(Intent.CATEGORY_OPENABLE)
-            intent.type = "application/*"
-            val chooser = Intent.createChooser(intent, getString(R.string.file_select_backup))
-            startActivityForResult(chooser, REQUEST_BACKUP_OPEN)
-        }
-    }
-
-    override fun onDestroyView() {
-        subscriptions.unsubscribe()
-        super.onDestroyView()
-    }
-
-    /**
-     * Called from the presenter when the backup is completed.
-     *
-     * @param file the file where the backup is saved.
-     */
-    fun onBackupCompleted(file: File) {
-        dismissBackupDialog()
-        val intent = Intent(Intent.ACTION_SEND)
-        intent.type = "application/json"
-        intent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://" + file))
-        startActivity(Intent.createChooser(intent, ""))
-    }
-
-    /**
-     * Called from the presenter when the restore is completed.
-     */
-    fun onRestoreCompleted() {
-        dismissRestoreDialog()
-        context.toast(R.string.backup_completed)
-    }
-
-    /**
-     * Called from the presenter when there's an error doing the backup.
-     * @param error the exception thrown.
-     */
-    fun onBackupError(error: Throwable) {
-        dismissBackupDialog()
-        context.toast(error.message)
-    }
-
-    /**
-     * Called from the presenter when there's an error restoring the backup.
-     * @param error the exception thrown.
-     */
-    fun onRestoreError(error: Throwable) {
-        dismissRestoreDialog()
-        context.toast(error.message)
-    }
-
-    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-        if (data != null && resultCode == Activity.RESULT_OK && requestCode == REQUEST_BACKUP_OPEN) {
-            restoreDialog = MaterialDialog.Builder(activity)
-                    .content(R.string.restore_please_wait)
-                    .progress(true, 0)
-                    .show()
-
-            // When using cloud services, we have to open the input stream in a background thread.
-            Observable.fromCallable { context.contentResolver.openInputStream(data.data) }
-                    .subscribeOn(Schedulers.io())
-                    .observeOn(AndroidSchedulers.mainThread())
-                    .subscribe({
-                        presenter.restoreBackup(it)
-                    }, { error ->
-                        context.toast(error.message)
-                        Timber.e(error)
-                    })
-                    .apply { subscriptions.add(this) }
-
-        }
-    }
-
-    /**
-     * Dismisses the backup dialog.
-     */
-    fun dismissBackupDialog() {
-        backupDialog?.let {
-            it.dismiss()
-            backupDialog = null
-        }
-    }
-
-    /**
-     * Dismisses the restore dialog.
-     */
-    fun dismissRestoreDialog() {
-        restoreDialog?.let {
-            it.dismiss()
-            restoreDialog = null
-        }
-    }
-
-    companion object {
-
-        private val REQUEST_BACKUP_OPEN = 102
-
-        fun newInstance(): BackupFragment {
-            return BackupFragment()
-        }
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/ui/backup/BackupPresenter.kt

@@ -1,94 +0,0 @@
-package eu.kanade.tachiyomi.ui.backup
-
-import android.os.Bundle
-import eu.kanade.tachiyomi.data.backup.BackupManager
-import eu.kanade.tachiyomi.data.database.DatabaseHelper
-import eu.kanade.tachiyomi.ui.base.presenter.BasePresenter
-import eu.kanade.tachiyomi.util.isNullOrUnsubscribed
-import rx.Observable
-import rx.Subscription
-import rx.android.schedulers.AndroidSchedulers
-import rx.schedulers.Schedulers
-import uy.kohesive.injekt.injectLazy
-import java.io.File
-import java.io.InputStream
-
-/**
- * Presenter of [BackupFragment].
- */
-class BackupPresenter : BasePresenter<BackupFragment>() {
-
-    /**
-     * Database.
-     */
-    val db: DatabaseHelper by injectLazy()
-
-    /**
-     * Backup manager.
-     */
-    private lateinit var backupManager: BackupManager
-
-    /**
-     * Subscription where the backup is restored.
-     */
-    private var restoreSubscription: Subscription? = null
-
-    /**
-     * Subscription where the backup is created.
-     */
-    private var backupSubscription: Subscription? = null
-
-    override fun onCreate(savedState: Bundle?) {
-        super.onCreate(savedState)
-        backupManager = BackupManager(db)
-    }
-
-    /**
-     * Creates a backup and saves it to a file.
-     *
-     * @param file the path where the file will be saved.
-     */
-    fun createBackup(file: File) {
-        if (backupSubscription.isNullOrUnsubscribed()) {
-            backupSubscription = getBackupObservable(file)
-                    .subscribeOn(Schedulers.io())
-                    .observeOn(AndroidSchedulers.mainThread())
-                    .subscribeFirst(
-                            { view, result -> view.onBackupCompleted(file) },
-                            BackupFragment::onBackupError)
-        }
-    }
-
-    /**
-     * Restores a backup from a stream.
-     *
-     * @param stream the input stream of the backup file.
-     */
-    fun restoreBackup(stream: InputStream) {
-        if (restoreSubscription.isNullOrUnsubscribed()) {
-            restoreSubscription = getRestoreObservable(stream)
-                    .subscribeOn(Schedulers.io())
-                    .observeOn(AndroidSchedulers.mainThread())
-                    .subscribeFirst(
-                            { view, result -> view.onRestoreCompleted() },
-                            BackupFragment::onRestoreError)
-        }
-    }
-
-    /**
-     * Returns the observable to save a backup.
-     */
-    private fun getBackupObservable(file: File) = Observable.fromCallable {
-        backupManager.backupToFile(file)
-        true
-    }
-
-    /**
-     * Returns the observable to restore a backup.
-     */
-    private fun getRestoreObservable(stream: InputStream) = Observable.fromCallable {
-        backupManager.restoreFromStream(stream)
-        true
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/ui/base/fragment/FragmentMixin.kt

@@ -1,6 +1,6 @@
 package eu.kanade.tachiyomi.ui.base.fragment
 
-import android.support.v7.app.AppCompatActivity
+import android.support.v4.app.FragmentActivity
 import eu.kanade.tachiyomi.ui.base.activity.ActivityMixin
 
 interface FragmentMixin {
@@ -13,7 +13,7 @@ interface FragmentMixin {
         (getActivity() as ActivityMixin).setToolbarTitle(getString(resourceId))
     }
 
-    fun getActivity(): AppCompatActivity
+    fun getActivity(): FragmentActivity
     
     fun getString(resource: Int): String
 }

app/src/main/java/eu/kanade/tachiyomi/ui/catalogue/CatalogueFragment.kt

@@ -4,6 +4,7 @@ import android.content.res.Configuration
 import android.os.Bundle
 import android.support.design.widget.Snackbar
 import android.support.v4.widget.DrawerLayout
+import android.support.v7.app.AppCompatActivity
 import android.support.v7.widget.*
 import android.view.*
 import android.widget.ArrayAdapter
@@ -14,7 +15,9 @@ import com.f2prateek.rx.preferences.Preference
 import eu.davidea.flexibleadapter.FlexibleAdapter
 import eu.davidea.flexibleadapter.items.IFlexible
 import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.database.models.Category
 import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.source.model.FilterList
 import eu.kanade.tachiyomi.ui.base.fragment.BaseRxFragment
 import eu.kanade.tachiyomi.ui.main.MainActivity
@@ -32,6 +35,7 @@ import nucleus.factory.RequiresPresenter
 import rx.Subscription
 import rx.android.schedulers.AndroidSchedulers
 import rx.subjects.PublishSubject
+import uy.kohesive.injekt.injectLazy
 import java.util.concurrent.TimeUnit.MILLISECONDS
 
 /**
@@ -44,6 +48,11 @@ open class CatalogueFragment : BaseRxFragment<CataloguePresenter>(),
         FlexibleAdapter.OnItemLongClickListener,
         FlexibleAdapter.EndlessScrollListener<ProgressItem> {
 
+    /**
+     * Preferences helper.
+     */
+    private val preferences: PreferencesHelper by injectLazy()
+
     /**
      * Spinner shown in the toolbar to change the selected source.
      */
@@ -155,7 +164,7 @@ open class CatalogueFragment : BaseRxFragment<CataloguePresenter>(),
         setupRecycler()
 
         // Create toolbar spinner
-        val themedContext = activity.supportActionBar?.themedContext ?: activity
+        val themedContext = (activity as AppCompatActivity).supportActionBar?.themedContext ?: activity
 
         val spinnerAdapter = ArrayAdapter(themedContext,
                 android.R.layout.simple_spinner_item, presenter.sources)
@@ -529,23 +538,72 @@ open class CatalogueFragment : BaseRxFragment<CataloguePresenter>(),
     /**
      * Called when a manga is long clicked.
      *
+     * Adds the manga to the default category if none is set it shows a list of categories for the user to put the manga
+     * in, the list consists of the default category plus the user's categories. The default category is preselected on
+     * new manga, and on already favorited manga the manga's categories are preselected.
+     *
      * @param position the position of the element clicked.
      */
     override fun onItemLongClick(position: Int) {
+        // Get manga
         val manga = (adapter.getItem(position) as? CatalogueItem?)?.manga ?: return
+        // Fetch categories
+        val categories = presenter.getCategories()
 
-        val textRes = if (manga.favorite) R.string.remove_from_library else R.string.add_to_library
-
-        MaterialDialog.Builder(activity)
-                .items(getString(textRes))
-                .itemsCallback { dialog, itemView, which, text ->
-                    when (which) {
-                        0 -> {
-                            presenter.changeMangaFavorite(manga)
-                            adapter.notifyItemChanged(position)
+        if (manga.favorite){
+            MaterialDialog.Builder(activity)
+                    .items(getString(R.string.remove_from_library ))
+                    .itemsCallback { _, _, which, _ ->
+                        when (which) {
+                            0 -> {
+                                presenter.changeMangaFavorite(manga)
+                                adapter.notifyItemChanged(position)
+                            }
                         }
-                    }
-                }.show()
+                    }.show()
+        }else{
+            val defaultCategory = categories.find { it.id == preferences.defaultCategory()}
+            if(defaultCategory != null) {
+                presenter.changeMangaFavorite(manga)
+                presenter.moveMangaToCategory(defaultCategory, manga)
+                // Show manga has been added
+                context.toast(R.string.added_to_library)
+                adapter.notifyItemChanged(position)
+            } else {
+                MaterialDialog.Builder(activity)
+                        .title(R.string.action_move_category)
+                        .items(categories.map { it.name })
+                        .itemsCallbackMultiChoice(presenter.getMangaCategoryIds(manga)) { dialog, position, _ ->
+                            if (position.contains(0) && position.count() > 1) {
+                                // Deselect default category
+                                dialog.setSelectedIndices(position.filter {it > 0}.toTypedArray())
+                                dialog.context.toast(R.string.invalid_combination)
+                            }
+                            true
+                        }
+                        .alwaysCallMultiChoiceCallback()
+                        .positiveText(android.R.string.ok)
+                        .negativeText(android.R.string.cancel)
+                        .onPositive { dialog, _ ->
+                            val selectedCategories = dialog.selectedIndices?.map { categories[it] } ?: emptyList()
+                            updateMangaCategories(manga, selectedCategories, position)
+                        }
+                        .build()
+                        .show()
+            }
+        }
+    }
+
+    /**
+     * Update manga to use selected categories.
+     *
+     * @param manga needed to change
+     * @param selectedCategories selected categories
+     * @param position position of adapter
+     */
+    private fun updateMangaCategories(manga: Manga, selectedCategories: List<Category>, position: Int) {
+        presenter.updateMangaCategories(manga,selectedCategories)
+        adapter.notifyItemChanged(position)
     }
 
 }

app/src/main/java/eu/kanade/tachiyomi/ui/catalogue/CataloguePresenter.kt

@@ -5,7 +5,9 @@ import eu.davidea.flexibleadapter.items.IFlexible
 import eu.davidea.flexibleadapter.items.ISectionable
 import eu.kanade.tachiyomi.data.cache.CoverCache
 import eu.kanade.tachiyomi.data.database.DatabaseHelper
+import eu.kanade.tachiyomi.data.database.models.Category
 import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.database.models.MangaCategory
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.data.preference.getOrDefault
 import eu.kanade.tachiyomi.source.CatalogueSource
@@ -396,4 +398,66 @@ open class CataloguePresenter : BasePresenter<CatalogueFragment>() {
         }
     }
 
+    /**
+     * Get the default, and user categories.
+     *
+     * @return List of categories, default plus user categories
+     */
+    fun getCategories(): List<Category> {
+        return arrayListOf(Category.createDefault()) + db.getCategories().executeAsBlocking()
+    }
+
+    /**
+     * Gets the category id's the manga is in, if the manga is not in a category, returns the default id.
+     *
+     * @param manga the manga to get categories from.
+     * @return Array of category ids the manga is in, if none returns default id
+     */
+    fun getMangaCategoryIds(manga: Manga): Array<Int?> {
+        val categories = db.getCategoriesForManga(manga).executeAsBlocking()
+        if (categories.isEmpty()) {
+            return arrayListOf(Category.createDefault().id).toTypedArray()
+        }
+        return categories.map { it.id }.toTypedArray()
+    }
+
+    /**
+     * Move the given manga to categories.
+     *
+     * @param categories the selected categories.
+     * @param manga the manga to move.
+     */
+    fun moveMangaToCategories(categories: List<Category>, manga: Manga) {
+        val mc = categories.map { MangaCategory.create(manga, it) }
+
+        db.setMangaCategories(mc, arrayListOf(manga))
+    }
+
+    /**
+     * Move the given manga to the category.
+     *
+     * @param category the selected category.
+     * @param manga the manga to move.
+     */
+    fun moveMangaToCategory(category: Category, manga: Manga) {
+        moveMangaToCategories(arrayListOf(category), manga)
+    }
+
+    /**
+     * Update manga to use selected categories.
+     *
+     * @param manga needed to change
+     * @param selectedCategories selected categories
+     */
+    fun updateMangaCategories(manga: Manga, selectedCategories: List<Category>) {
+        if (!selectedCategories.isEmpty()) {
+            if (!manga.favorite)
+                changeMangaFavorite(manga)
+
+            moveMangaToCategories(selectedCategories.filter { it.id != 0 }, manga)
+        } else {
+            changeMangaFavorite(manga)
+        }
+    }
+
 }

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryFragment.kt

@@ -9,6 +9,7 @@ import android.support.design.widget.TabLayout
 import android.support.v4.graphics.drawable.DrawableCompat
 import android.support.v4.view.ViewPager
 import android.support.v4.widget.DrawerLayout
+import android.support.v7.app.AppCompatActivity
 import android.support.v7.view.ActionMode
 import android.support.v7.widget.SearchView
 import android.view.*
@@ -356,7 +357,7 @@ class LibraryFragment : BaseRxFragment<LibraryPresenter>(), ActionMode.Callback
      */
     fun createActionModeIfNeeded() {
         if (actionMode == null) {
-            actionMode = activity.startSupportActionMode(this)
+            actionMode = (activity as AppCompatActivity).startSupportActionMode(this)
         }
     }
 
@@ -440,11 +441,11 @@ class LibraryFragment : BaseRxFragment<LibraryPresenter>(), ActionMode.Callback
                         if (presenter.editCoverWithStream(it, manga)) {
                             // TODO refresh cover
                         } else {
-                            context.toast(R.string.notification_manga_update_failed)
+                            context.toast(R.string.notification_cover_update_failed)
                         }
                     }
                 } catch (error: IOException) {
-                    context.toast(R.string.notification_manga_update_failed)
+                    context.toast(R.string.notification_cover_update_failed)
                     Timber.e(error)
                 }
             }

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt

@@ -177,12 +177,9 @@ class LibraryPresenter : BasePresenter<LibraryFragment>() {
     private fun applySort(map: Map<Int, List<Manga>>): Map<Int, List<Manga>> {
         val sortingMode = preferences.librarySortingMode().getOrDefault()
 
-        // TODO lazy initialization in kotlin 1.1
-        var lastReadManga: Map<Long, Int>? = null
-        if (sortingMode == LibrarySort.LAST_READ) {
+        val lastReadManga by lazy {
             var counter = 0
-            lastReadManga = db.getLastReadManga().executeAsBlocking()
-                    .associate { it.id!! to counter++ }
+            db.getLastReadManga().executeAsBlocking().associate { it.id!! to counter++ }
         }
 
         val sortFn: (Manga, Manga) -> Int = { manga1, manga2 ->
@@ -190,8 +187,8 @@ class LibraryPresenter : BasePresenter<LibraryFragment>() {
                 LibrarySort.ALPHA -> manga1.title.compareTo(manga2.title)
                 LibrarySort.LAST_READ -> {
                     // Get index of manga, set equal to list if size unknown.
-                    val manga1LastRead = lastReadManga!![manga1.id!!] ?: lastReadManga!!.size
-                    val manga2LastRead = lastReadManga!![manga2.id!!] ?: lastReadManga!!.size
+                    val manga1LastRead = lastReadManga[manga1.id!!] ?: lastReadManga.size
+                    val manga2LastRead = lastReadManga[manga2.id!!] ?: lastReadManga.size
                     manga1LastRead.compareTo(manga2LastRead)
                 }
                 LibrarySort.LAST_UPDATED -> manga2.last_update.compareTo(manga1.last_update)

app/src/main/java/eu/kanade/tachiyomi/ui/main/MainActivity.kt

@@ -8,7 +8,6 @@ import android.support.v4.view.GravityCompat
 import android.view.MenuItem
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
-import eu.kanade.tachiyomi.ui.backup.BackupFragment
 import eu.kanade.tachiyomi.ui.base.activity.BaseActivity
 import eu.kanade.tachiyomi.ui.catalogue.CatalogueFragment
 import eu.kanade.tachiyomi.ui.download.DownloadActivity
@@ -38,8 +37,8 @@ class MainActivity : BaseActivity() {
         setAppTheme()
         super.onCreate(savedState)
 
-        // Do not let the launcher create a new activity
-        if (intent.flags and Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT != 0) {
+        // Do not let the launcher create a new activity http://stackoverflow.com/questions/16283079
+        if (!isTaskRoot) {
             finish()
             return
         }
@@ -71,7 +70,6 @@ class MainActivity : BaseActivity() {
                         val intent = Intent(this, SettingsActivity::class.java)
                         startActivityForResult(intent, REQUEST_OPEN_SETTINGS)
                     }
-                    R.id.nav_drawer_backup -> setFragment(BackupFragment.newInstance(), id)
                 }
             }
             drawer.closeDrawer(GravityCompat.START)
@@ -80,11 +78,19 @@ class MainActivity : BaseActivity() {
 
         if (savedState == null) {
             // Set start screen
-            setSelectedDrawerItem(startScreenId)
+            when (intent.action) {
+                SHORTCUT_LIBRARY -> setSelectedDrawerItem(R.id.nav_drawer_library)
+                SHORTCUT_RECENTLY_UPDATED -> setSelectedDrawerItem(R.id.nav_drawer_recent_updates)
+                SHORTCUT_RECENTLY_READ -> setSelectedDrawerItem(R.id.nav_drawer_recently_read)
+                SHORTCUT_CATALOGUES -> setSelectedDrawerItem(R.id.nav_drawer_catalogues)
+                else ->  setSelectedDrawerItem(startScreenId)
+            }
 
             // Show changelog if needed
             ChangelogDialogFragment.show(this, preferences, supportFragmentManager)
         }
+
+
     }
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
@@ -145,5 +151,10 @@ class MainActivity : BaseActivity() {
 
     companion object {
         private const val REQUEST_OPEN_SETTINGS = 200
+        // Shortcut actions
+        private const val SHORTCUT_LIBRARY = "eu.kanade.tachiyomi.SHOW_LIBRARY"
+        private const val SHORTCUT_RECENTLY_UPDATED = "eu.kanade.tachiyomi.SHOW_RECENTLY_UPDATED"
+        private const val SHORTCUT_RECENTLY_READ = "eu.kanade.tachiyomi.SHOW_RECENTLY_READ"
+        private const val SHORTCUT_CATALOGUES = "eu.kanade.tachiyomi.SHOW_CATALOGUES"
     }
 }

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChapterHolder.kt

@@ -1,128 +1,116 @@
-package eu.kanade.tachiyomi.ui.manga.chapter
-
-import android.view.View
-import android.widget.PopupMenu
-import eu.kanade.tachiyomi.R
-import eu.kanade.tachiyomi.data.database.models.Manga
-import eu.kanade.tachiyomi.data.download.model.Download
-import eu.kanade.tachiyomi.ui.base.adapter.FlexibleViewHolder
-import eu.kanade.tachiyomi.util.getResourceColor
-import kotlinx.android.synthetic.main.item_chapter.view.*
-import java.text.DateFormat
-import java.text.DecimalFormat
-import java.text.DecimalFormatSymbols
-import java.util.*
-
-class ChaptersHolder(
-        private val view: View,
-        private val adapter: ChaptersAdapter,
-        listener: FlexibleViewHolder.OnListItemClickListener)
-: FlexibleViewHolder(view, adapter, listener) {
-
-    private val readColor = view.context.getResourceColor(android.R.attr.textColorHint)
-    private val unreadColor = view.context.getResourceColor(android.R.attr.textColorPrimary)
-    private val bookmarkedColor = view.context.getResourceColor(R.attr.colorAccent)
-    private val decimalFormat = DecimalFormat("#.###", DecimalFormatSymbols().apply { decimalSeparator = '.' })
-    private val df = DateFormat.getDateInstance(DateFormat.SHORT)
-
-    private var item: ChapterModel? = null
-
-    init {
-        // We need to post a Runnable to show the popup to make sure that the PopupMenu is
-        // correctly positioned. The reason being that the view may change position before the
-        // PopupMenu is shown.
-        view.chapter_menu.setOnClickListener { it.post { showPopupMenu(it) } }
-    }
-
-    fun onSetValues(chapter: ChapterModel, manga: Manga?) = with(view) {
-        item = chapter
-
-        chapter_title.text = when (manga?.displayMode) {
-            Manga.DISPLAY_NUMBER -> {
-                val formattedNumber = decimalFormat.format(chapter.chapter_number.toDouble())
-                context.getString(R.string.display_mode_chapter, formattedNumber)
-            }
-            else -> chapter.name
-        }
-
-        // Set correct text color
-        chapter_title.setTextColor(if (chapter.read) readColor else unreadColor)
-        if (chapter.bookmark) chapter_title.setTextColor(bookmarkedColor)
-
-        if (chapter.date_upload > 0) {
-            chapter_date.text = df.format(Date(chapter.date_upload))
-            chapter_date.setTextColor(if (chapter.read) readColor else unreadColor)
-        } else {
-            chapter_date.text = ""
-        }
-
-        chapter_pages.text = if (!chapter.read && chapter.last_page_read > 0) {
-            context.getString(R.string.chapter_progress, chapter.last_page_read + 1)
-        } else {
-            ""
-        }
-
-        notifyStatus(chapter.status)
-    }
-
-    fun notifyStatus(status: Int) = with(view.download_text) {
-        when (status) {
-            Download.QUEUE -> setText(R.string.chapter_queued)
-            Download.DOWNLOADING -> setText(R.string.chapter_downloading)
-            Download.DOWNLOADED -> setText(R.string.chapter_downloaded)
-            Download.ERROR -> setText(R.string.chapter_error)
-            else -> text = ""
-        }
-    }
-
-    private fun showPopupMenu(view: View) = item?.let { chapter ->
-        // Create a PopupMenu, giving it the clicked view for an anchor
-        val popup = PopupMenu(view.context, view)
-
-        // Inflate our menu resource into the PopupMenu's Menu
-        popup.menuInflater.inflate(R.menu.chapter_single, popup.menu)
-
-        // Hide download and show delete if the chapter is downloaded
-        if (chapter.isDownloaded) {
-            popup.menu.findItem(R.id.action_download).isVisible = false
-            popup.menu.findItem(R.id.action_delete).isVisible = true
-        }
-
-        // Hide bookmark if bookmark
-        popup.menu.findItem(R.id.action_bookmark).isVisible = !chapter.bookmark
-        popup.menu.findItem(R.id.action_remove_bookmark).isVisible = chapter.bookmark
-
-        // Hide mark as unread when the chapter is unread
-        if (!chapter.read && chapter.last_page_read == 0) {
-            popup.menu.findItem(R.id.action_mark_as_unread).isVisible = false
-        }
-
-        // Hide mark as read when the chapter is read
-        if (chapter.read) {
-            popup.menu.findItem(R.id.action_mark_as_read).isVisible = false
-        }
-
-        // Set a listener so we are notified if a menu item is clicked
-        popup.setOnMenuItemClickListener { menuItem ->
-            val chapterList = listOf(chapter)
-
-            with(adapter.fragment) {
-                when (menuItem.itemId) {
-                    R.id.action_download -> downloadChapters(chapterList)
-                    R.id.action_bookmark -> bookmarkChapters(chapterList, true)
-                    R.id.action_remove_bookmark -> bookmarkChapters(chapterList, false)
-                    R.id.action_delete -> deleteChapters(chapterList)
-                    R.id.action_mark_as_read -> markAsRead(chapterList)
-                    R.id.action_mark_as_unread -> markAsUnread(chapterList)
-                    R.id.action_mark_previous_as_read -> markPreviousAsRead(chapter)
-                }
-            }
-
-            true
-        }
-
-        // Finally show the PopupMenu
-        popup.show()
-    }
-
-}
+package eu.kanade.tachiyomi.ui.manga.chapter
+
+import android.view.View
+import android.widget.PopupMenu
+import eu.davidea.viewholders.FlexibleViewHolder
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.download.model.Download
+import eu.kanade.tachiyomi.util.getResourceColor
+import kotlinx.android.synthetic.main.item_chapter.view.*
+import java.text.DateFormat
+import java.text.DecimalFormat
+import java.text.DecimalFormatSymbols
+import java.util.*
+
+class ChapterHolder(
+        private val view: View,
+        private val adapter: ChaptersAdapter)
+: FlexibleViewHolder(view, adapter) {
+
+    private val readColor = view.context.getResourceColor(android.R.attr.textColorHint)
+    private val unreadColor = view.context.getResourceColor(android.R.attr.textColorPrimary)
+    private val bookmarkedColor = view.context.getResourceColor(R.attr.colorAccent)
+    private val decimalFormat = DecimalFormat("#.###", DecimalFormatSymbols().apply { decimalSeparator = '.' })
+    private val df = DateFormat.getDateInstance(DateFormat.SHORT)
+
+    init {
+        // We need to post a Runnable to show the popup to make sure that the PopupMenu is
+        // correctly positioned. The reason being that the view may change position before the
+        // PopupMenu is shown.
+        view.chapter_menu.setOnClickListener { it.post { showPopupMenu(it) } }
+    }
+
+    fun bind(item: ChapterItem, manga: Manga) = with(view) {
+        val chapter = item.chapter
+
+        chapter_title.text = when (manga.displayMode) {
+            Manga.DISPLAY_NUMBER -> {
+                val formattedNumber = decimalFormat.format(chapter.chapter_number.toDouble())
+                context.getString(R.string.display_mode_chapter, formattedNumber)
+            }
+            else -> chapter.name
+        }
+
+        // Set correct text color
+        chapter_title.setTextColor(if (chapter.read) readColor else unreadColor)
+        if (chapter.bookmark) chapter_title.setTextColor(bookmarkedColor)
+
+        if (chapter.date_upload > 0) {
+            chapter_date.text = df.format(Date(chapter.date_upload))
+            chapter_date.setTextColor(if (chapter.read) readColor else unreadColor)
+        } else {
+            chapter_date.text = ""
+        }
+
+        chapter_pages.text = if (!chapter.read && chapter.last_page_read > 0) {
+            context.getString(R.string.chapter_progress, chapter.last_page_read + 1)
+        } else {
+            ""
+        }
+
+        notifyStatus(item.status)
+    }
+
+    fun notifyStatus(status: Int) = with(view.download_text) {
+        when (status) {
+            Download.QUEUE -> setText(R.string.chapter_queued)
+            Download.DOWNLOADING -> setText(R.string.chapter_downloading)
+            Download.DOWNLOADED -> setText(R.string.chapter_downloaded)
+            Download.ERROR -> setText(R.string.chapter_error)
+            else -> text = ""
+        }
+    }
+
+    private fun showPopupMenu(view: View) {
+        val item = adapter.getItem(adapterPosition) ?: return
+
+        // Create a PopupMenu, giving it the clicked view for an anchor
+        val popup = PopupMenu(view.context, view)
+
+        // Inflate our menu resource into the PopupMenu's Menu
+        popup.menuInflater.inflate(R.menu.chapter_single, popup.menu)
+
+        val chapter = item.chapter
+
+        // Hide download and show delete if the chapter is downloaded
+        if (item.isDownloaded) {
+            popup.menu.findItem(R.id.action_download).isVisible = false
+            popup.menu.findItem(R.id.action_delete).isVisible = true
+        }
+
+        // Hide bookmark if bookmark
+        popup.menu.findItem(R.id.action_bookmark).isVisible = !chapter.bookmark
+        popup.menu.findItem(R.id.action_remove_bookmark).isVisible = chapter.bookmark
+
+        // Hide mark as unread when the chapter is unread
+        if (!chapter.read && chapter.last_page_read == 0) {
+            popup.menu.findItem(R.id.action_mark_as_unread).isVisible = false
+        }
+
+        // Hide mark as read when the chapter is read
+        if (chapter.read) {
+            popup.menu.findItem(R.id.action_mark_as_read).isVisible = false
+        }
+
+        // Set a listener so we are notified if a menu item is clicked
+        popup.setOnMenuItemClickListener { menuItem ->
+            adapter.menuItemListener(adapterPosition, menuItem)
+            true
+        }
+
+        // Finally show the PopupMenu
+        popup.show()
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChapterItem.kt

@@ -0,0 +1,50 @@
+package eu.kanade.tachiyomi.ui.manga.chapter
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import eu.davidea.flexibleadapter.FlexibleAdapter
+import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.download.model.Download
+
+class ChapterItem(val chapter: Chapter, val manga: Manga) : AbstractFlexibleItem<ChapterHolder>(),
+        Chapter by chapter {
+
+    private var _status: Int = 0
+
+    var status: Int
+        get() = download?.status ?: _status
+        set(value) { _status = value }
+
+    @Transient var download: Download? = null
+
+    val isDownloaded: Boolean
+        get() = status == Download.DOWNLOADED
+
+    override fun getLayoutRes(): Int {
+        return R.layout.item_chapter
+    }
+
+    override fun createViewHolder(adapter: FlexibleAdapter<*>, inflater: LayoutInflater, parent: ViewGroup): ChapterHolder {
+        return ChapterHolder(inflater.inflate(layoutRes, parent, false), adapter as ChaptersAdapter)
+    }
+
+    override fun bindViewHolder(adapter: FlexibleAdapter<*>, holder: ChapterHolder, position: Int, payloads: List<Any?>?) {
+        holder.bind(this, manga)
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other is ChapterItem) {
+            return chapter.id!! == other.chapter.id!!
+        }
+        return false
+    }
+
+    override fun hashCode(): Int {
+        return chapter.id!!.hashCode()
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChapterModel.kt

@@ -1,19 +0,0 @@
-package eu.kanade.tachiyomi.ui.manga.chapter
-
-import eu.kanade.tachiyomi.data.database.models.Chapter
-import eu.kanade.tachiyomi.data.download.model.Download
-
-class ChapterModel(c: Chapter) : Chapter by c {
-
-    private var _status: Int = 0
-
-    var status: Int
-        get() = download?.status ?: _status
-        set(value) { _status = value }
-
-    @Transient var download: Download? = null
-
-    val isDownloaded: Boolean
-        get() = status == Download.DOWNLOADED
-
-}

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersAdapter.kt

@@ -1,42 +1,19 @@
 package eu.kanade.tachiyomi.ui.manga.chapter
 
-import android.view.ViewGroup
-import eu.davidea.flexibleadapter4.FlexibleAdapter
-import eu.kanade.tachiyomi.R
-import eu.kanade.tachiyomi.util.inflate
+import android.view.MenuItem
+import eu.davidea.flexibleadapter.FlexibleAdapter
 
-class ChaptersAdapter(val fragment: ChaptersFragment) : FlexibleAdapter<ChaptersHolder, ChapterModel>() {
+class ChaptersAdapter(val fragment: ChaptersFragment) : FlexibleAdapter<ChapterItem>(null, fragment, true) {
 
-    init {
-        setHasStableIds(true)
+    var items: List<ChapterItem> = emptyList()
+
+    val menuItemListener: (Int, MenuItem) -> Unit = { position, item ->
+        fragment.onItemMenuClick(position, item)
     }
 
-    var items: List<ChapterModel>
-        get() = mItems
-        set(value) {
-            mItems = value
-            notifyDataSetChanged()
-        }
-
-    override fun updateDataSet(param: String) {
-    }
-
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ChaptersHolder {
-        val v = parent.inflate(R.layout.item_chapter)
-        return ChaptersHolder(v, this, fragment)
-    }
-
-    override fun onBindViewHolder(holder: ChaptersHolder, position: Int) {
-        val chapter = getItem(position)
-        val manga = fragment.presenter.manga
-        holder.onSetValues(chapter, manga)
-
-        //When user scrolls this bind the correct selection status
-        holder.itemView.isActivated = isSelected(position)
-    }
-
-    override fun getItemId(position: Int): Long {
-        return mItems[position].id!!
+    override fun updateDataSet(items: List<ChapterItem>) {
+        this.items = items
+        super.updateDataSet(items.toList())
     }
 
 }

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersFragment.kt

@@ -6,17 +6,17 @@ import android.content.Intent
 import android.os.Bundle
 import android.support.design.widget.Snackbar
 import android.support.v4.app.DialogFragment
+import android.support.v7.app.AppCompatActivity
 import android.support.v7.view.ActionMode
 import android.support.v7.widget.DividerItemDecoration
 import android.support.v7.widget.LinearLayoutManager
 import android.view.*
 import com.afollestad.materialdialogs.MaterialDialog
-import eu.davidea.flexibleadapter4.FlexibleAdapter
+import eu.davidea.flexibleadapter.FlexibleAdapter
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.database.models.Chapter
 import eu.kanade.tachiyomi.data.database.models.Manga
 import eu.kanade.tachiyomi.data.download.model.Download
-import eu.kanade.tachiyomi.ui.base.adapter.FlexibleViewHolder
 import eu.kanade.tachiyomi.ui.base.fragment.BaseRxFragment
 import eu.kanade.tachiyomi.ui.manga.MangaActivity
 import eu.kanade.tachiyomi.ui.reader.ReaderActivity
@@ -29,7 +29,10 @@ import nucleus.factory.RequiresPresenter
 import timber.log.Timber
 
 @RequiresPresenter(ChaptersPresenter::class)
-class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callback, FlexibleViewHolder.OnListItemClickListener {
+class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(),
+        ActionMode.Callback,
+        FlexibleAdapter.OnItemClickListener,
+        FlexibleAdapter.OnItemLongClickListener {
 
     companion object {
         /**
@@ -70,38 +73,31 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
         recycler.layoutManager = LinearLayoutManager(activity)
         recycler.addItemDecoration(DividerItemDecoration(context, DividerItemDecoration.VERTICAL))
         recycler.setHasFixedSize(true)
+//        TODO enable in a future commit
+//        adapter.setFastScroller(fast_scroller, context.getResourceColor(R.attr.colorAccent))
+//        adapter.toggleFastScroller()
 
         swipe_refresh.setOnRefreshListener { fetchChapters() }
 
         fab.setOnClickListener {
-            val chapter = presenter.getNextUnreadChapter()
-            if (chapter != null) {
+            val item = presenter.getNextUnreadChapter()
+            if (item != null) {
                 // Create animation listener
                 val revealAnimationListener: Animator.AnimatorListener = object : AnimatorListenerAdapter() {
                     override fun onAnimationStart(animation: Animator?) {
-                        openChapter(chapter, true)
+                        openChapter(item.chapter, true)
                     }
                 }
 
                 // Get coordinates and start animation
                 val coordinates = fab.getCoordinates()
                 if (!reveal_view.showRevealEffect(coordinates.x, coordinates.y, revealAnimationListener)) {
-                    openChapter(chapter)
+                    openChapter(item.chapter)
                 }
             } else {
                 context.toast(R.string.no_next_chapter)
             }
         }
-
-    }
-
-    override fun onPause() {
-        // Stop recycler's scrolling when onPause is called. If the activity is finishing
-        // the presenter will be destroyed, and it could cause NPE
-        // https://github.com/inorichi/tachiyomi/issues/159
-        recycler.stopScroll()
-
-        super.onPause()
     }
 
     override fun onResume() {
@@ -172,19 +168,20 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
         return true
     }
 
+    @Suppress("UNUSED_PARAMETER")
     fun onNextManga(manga: Manga) {
         // Set initial values
         activity.supportInvalidateOptionsMenu()
     }
 
-    fun onNextChapters(chapters: List<ChapterModel>) {
+    fun onNextChapters(chapters: List<ChapterItem>) {
         // If the list is empty, fetch chapters from source if the conditions are met
         // We use presenter chapters instead because they are always unfiltered
         if (presenter.chapters.isEmpty())
             initialFetchChapters()
 
         destroyActionModeIfNeeded()
-        adapter.items = chapters
+        adapter.updateDataSet(chapters)
     }
 
     private fun initialFetchChapters() {
@@ -229,7 +226,7 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
                 .title(R.string.action_display_mode)
                 .items(modes.map { getString(it) })
                 .itemsIds(ids)
-                .itemsCallbackSingleChoice(selectedIndex) { dialog, itemView, which, text ->
+                .itemsCallbackSingleChoice(selectedIndex) { _, itemView, _, _ ->
                     // Save the new display mode
                     presenter.setDisplayMode(itemView.id)
                     // Refresh ui
@@ -249,7 +246,7 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
                 .title(R.string.sorting_mode)
                 .items(modes.map { getString(it) })
                 .itemsIds(ids)
-                .itemsCallbackSingleChoice(selectedIndex) { dialog, itemView, which, text ->
+                .itemsCallbackSingleChoice(selectedIndex) { _, itemView, _, _ ->
                     // Save the new sorting mode
                     presenter.setSorting(itemView.id)
                     true
@@ -266,7 +263,7 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
                 .title(R.string.manga_download)
                 .negativeText(android.R.string.cancel)
                 .items(modes.map { getString(it) })
-                .itemsCallback { dialog, view, i, charSequence ->
+                .itemsCallback { _, _, i, _ ->
 
                     fun getUnreadChaptersSorted() = presenter.chapters
                             .filter { !it.read && it.status == Download.NOT_DOWNLOADED }
@@ -298,8 +295,8 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
         getHolder(download.chapter)?.notifyStatus(download.status)
     }
 
-    private fun getHolder(chapter: Chapter): ChaptersHolder? {
-        return recycler.findViewHolderForItemId(chapter.id!!) as? ChaptersHolder
+    private fun getHolder(chapter: Chapter): ChapterHolder? {
+        return recycler.findViewHolderForItemId(chapter.id!!) as? ChapterHolder
     }
 
     override fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean {
@@ -323,7 +320,7 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
                         .content(R.string.confirm_delete_chapters)
                         .positiveText(android.R.string.yes)
                         .negativeText(android.R.string.no)
-                        .onPositive { dialog, action -> deleteChapters(getSelectedChapters()) }
+                        .onPositive { _, _ -> deleteChapters(getSelectedChapters()) }
                         .show()
             }
             else -> return false
@@ -337,8 +334,8 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
         actionMode = null
     }
 
-    fun getSelectedChapters(): List<ChapterModel> {
-        return adapter.selectedItems.map { adapter.getItem(it) }
+    fun getSelectedChapters(): List<ChapterItem> {
+        return adapter.selectedPositions.map { adapter.getItem(it) }
     }
 
     fun destroyActionModeIfNeeded() {
@@ -350,18 +347,18 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
         setContextTitle(adapter.selectedItemCount)
     }
 
-    fun markAsRead(chapters: List<ChapterModel>) {
+    fun markAsRead(chapters: List<ChapterItem>) {
         presenter.markChaptersRead(chapters, true)
         if (presenter.preferences.removeAfterMarkedAsRead()) {
             deleteChapters(chapters)
         }
     }
 
-    fun markAsUnread(chapters: List<ChapterModel>) {
+    fun markAsUnread(chapters: List<ChapterItem>) {
         presenter.markChaptersRead(chapters, false)
     }
 
-    fun markPreviousAsRead(chapter: ChapterModel) {
+    fun markPreviousAsRead(chapter: ChapterItem) {
         val chapters = if (presenter.sortDescending()) adapter.items.reversed() else adapter.items
         val chapterPos = chapters.indexOf(chapter)
         if (chapterPos != -1) {
@@ -369,7 +366,7 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
         }
     }
 
-    fun downloadChapters(chapters: List<ChapterModel>) {
+    fun downloadChapters(chapters: List<ChapterItem>) {
         destroyActionModeIfNeeded()
         presenter.downloadChapters(chapters)
         if (!presenter.manga.favorite){
@@ -381,12 +378,12 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
         }
     }
 
-    fun bookmarkChapters(chapters: List<ChapterModel>, bookmarked: Boolean) {
+    fun bookmarkChapters(chapters: List<ChapterItem>, bookmarked: Boolean) {
         destroyActionModeIfNeeded()
         presenter.bookmarkChapters(chapters, bookmarked)
     }
 
-    fun deleteChapters(chapters: List<ChapterModel>) {
+    fun deleteChapters(chapters: List<ChapterItem>) {
         destroyActionModeIfNeeded()
         DeletingChaptersDialog().show(childFragmentManager, DeletingChaptersDialog.TAG)
         presenter.deleteChapters(chapters)
@@ -407,26 +404,40 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
                 ?.dismissAllowingStateLoss()
     }
 
-    override fun onListItemClick(position: Int): Boolean {
+    override fun onItemClick(position: Int): Boolean {
         val item = adapter.getItem(position) ?: return false
         if (actionMode != null && adapter.mode == FlexibleAdapter.MODE_MULTI) {
             toggleSelection(position)
             return true
         } else {
-            openChapter(item)
+            openChapter(item.chapter)
             return false
         }
     }
 
-    override fun onListItemLongClick(position: Int) {
+    override fun onItemLongClick(position: Int) {
         if (actionMode == null)
-            actionMode = activity.startSupportActionMode(this)
+            actionMode = (activity as AppCompatActivity).startSupportActionMode(this)
 
         toggleSelection(position)
     }
 
+    fun onItemMenuClick(position: Int, item: MenuItem) {
+        val chapter = adapter.getItem(position)?.let { listOf(it) } ?: return
+
+        when (item.itemId) {
+            R.id.action_download -> downloadChapters(chapter)
+            R.id.action_bookmark -> bookmarkChapters(chapter, true)
+            R.id.action_remove_bookmark -> bookmarkChapters(chapter, false)
+            R.id.action_delete -> deleteChapters(chapter)
+            R.id.action_mark_as_read -> markAsRead(chapter)
+            R.id.action_mark_as_unread -> markAsUnread(chapter)
+            R.id.action_mark_previous_as_read -> markPreviousAsRead(chapter[0])
+        }
+    }
+
     private fun toggleSelection(position: Int) {
-        adapter.toggleSelection(position, false)
+        adapter.toggleSelection(position)
 
         val count = adapter.selectedItemCount
         if (count == 0) {

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersPresenter.kt

@@ -65,14 +65,14 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
     /**
      * List of chapters of the manga. It's always unfiltered and unsorted.
      */
-    var chapters: List<ChapterModel> = emptyList()
+    var chapters: List<ChapterItem> = emptyList()
         private set
 
     /**
      * Subject of list of chapters to allow updating the view without going to DB.
      */
-    val chaptersRelay: PublishRelay<List<ChapterModel>>
-            by lazy { PublishRelay.create<List<ChapterModel>>() }
+    val chaptersRelay: PublishRelay<List<ChapterItem>>
+            by lazy { PublishRelay.create<List<ChapterItem>>() }
 
     /**
      * Whether the chapter list has been requested to the source.
@@ -103,7 +103,7 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
         chaptersRelay.flatMap { applyChapterFilters(it) }
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribeLatestCache(ChaptersFragment::onNextChapters,
-                        { view, error -> Timber.e(error) })
+                        { _, error -> Timber.e(error) })
 
         // Add the subscription that retrieves the chapters from the database, keeps subscribed to
         // changes, and sends the list of chapters to the relay.
@@ -135,15 +135,15 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
                 .filter { download -> download.manga.id == manga.id }
                 .doOnNext { onDownloadStatusChange(it) }
                 .subscribeLatestCache(ChaptersFragment::onChapterStatusChange,
-                        { view, error -> Timber.e(error) })
+                        { _, error -> Timber.e(error) })
     }
 
     /**
      * Converts a chapter from the database to an extended model, allowing to store new fields.
      */
-    private fun Chapter.toModel(): ChapterModel {
+    private fun Chapter.toModel(): ChapterItem {
         // Create the model object.
-        val model = ChapterModel(this)
+        val model = ChapterItem(this, manga)
 
         // Find an active download for this chapter.
         val download = downloadManager.queue.find { it.chapter.id == id }
@@ -160,7 +160,7 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
      *
      * @param chapters the list of chapter from the database.
      */
-    private fun setDownloadedChapters(chapters: List<ChapterModel>) {
+    private fun setDownloadedChapters(chapters: List<ChapterItem>) {
         val files = downloadManager.findMangaDir(source, manga)?.listFiles() ?: return
         val cached = mutableMapOf<Chapter, String>()
         files.mapNotNull { it.name }
@@ -181,7 +181,7 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
                 .subscribeOn(Schedulers.io())
                 .map { syncChaptersWithSource(db, it, manga, source) }
                 .observeOn(AndroidSchedulers.mainThread())
-                .subscribeFirst({ view, chapters ->
+                .subscribeFirst({ view, _ ->
                     view.onFetchChaptersDone()
                 }, ChaptersFragment::onFetchChaptersError)
     }
@@ -198,7 +198,7 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
      * @param chapters the list of chapters from the database
      * @return an observable of the list of chapters filtered and sorted.
      */
-    private fun applyChapterFilters(chapters: List<ChapterModel>): Observable<List<ChapterModel>> {
+    private fun applyChapterFilters(chapters: List<ChapterItem>): Observable<List<ChapterItem>> {
         var observable = Observable.from(chapters).subscribeOn(Schedulers.io())
         if (onlyUnread()) {
             observable = observable.filter { !it.read }
@@ -248,7 +248,7 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
     /**
      * Returns the next unread chapter or null if everything is read.
      */
-    fun getNextUnreadChapter(): ChapterModel? {
+    fun getNextUnreadChapter(): ChapterItem? {
         return chapters.sortedByDescending { it.source_order }.find { !it.read }
     }
 
@@ -257,7 +257,7 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
      * @param selectedChapters the list of selected chapters.
      * @param read whether to mark chapters as read or unread.
      */
-    fun markChaptersRead(selectedChapters: List<ChapterModel>, read: Boolean) {
+    fun markChaptersRead(selectedChapters: List<ChapterItem>, read: Boolean) {
         Observable.from(selectedChapters)
                 .doOnNext { chapter ->
                     chapter.read = read
@@ -275,7 +275,7 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
      * Downloads the given list of chapters with the manager.
      * @param chapters the list of chapters to download.
      */
-    fun downloadChapters(chapters: List<ChapterModel>) {
+    fun downloadChapters(chapters: List<ChapterItem>) {
         DownloadService.start(context)
         downloadManager.downloadChapters(manga, chapters)
     }
@@ -284,7 +284,7 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
      * Bookmarks the given list of chapters.
      * @param selectedChapters the list of chapters to bookmark.
      */
-    fun bookmarkChapters(selectedChapters: List<ChapterModel>, bookmarked: Boolean) {
+    fun bookmarkChapters(selectedChapters: List<ChapterItem>, bookmarked: Boolean) {
         Observable.from(selectedChapters)
                 .doOnNext { chapter ->
                     chapter.bookmark = bookmarked
@@ -299,14 +299,14 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
      * Deletes the given list of chapter.
      * @param chapters the list of chapters to delete.
      */
-    fun deleteChapters(chapters: List<ChapterModel>) {
+    fun deleteChapters(chapters: List<ChapterItem>) {
         Observable.from(chapters)
                 .doOnNext { deleteChapter(it) }
                 .toList()
                 .doOnNext { if (onlyDownloaded()) refreshChapters() }
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
-                .subscribeFirst({ view, result ->
+                .subscribeFirst({ view, _ ->
                     view.onChaptersDeleted()
                 }, ChaptersFragment::onChaptersDeletedError)
     }
@@ -315,7 +315,7 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
      * Deletes a chapter from disk. This method is called in a background thread.
      * @param chapter the chapter to delete.
      */
-    private fun deleteChapter(chapter: ChapterModel) {
+    private fun deleteChapter(chapter: ChapterItem) {
         downloadManager.queue.remove(chapter)
         downloadManager.deleteChapter(source, manga, chapter)
         chapter.status = Download.NOT_DOWNLOADED

app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoFragment.kt

@@ -6,6 +6,7 @@ import android.net.Uri
 import android.os.Bundle
 import android.support.customtabs.CustomTabsIntent
 import android.view.*
+import android.widget.Toast
 import com.afollestad.materialdialogs.MaterialDialog
 import com.bumptech.glide.BitmapRequestBuilder
 import com.bumptech.glide.BitmapTypeRequest
@@ -14,6 +15,7 @@ import com.bumptech.glide.load.engine.DiskCacheStrategy
 import com.bumptech.glide.load.resource.bitmap.CenterCrop
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.source.Source
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.HttpSource
@@ -31,6 +33,7 @@ import nucleus.factory.RequiresPresenter
 import rx.Observable
 import rx.android.schedulers.AndroidSchedulers
 import rx.schedulers.Schedulers
+import uy.kohesive.injekt.injectLazy
 
 /**
  * Fragment that shows manga information.
@@ -52,6 +55,11 @@ class MangaInfoFragment : BaseRxFragment<MangaInfoPresenter>() {
 
     }
 
+    /**
+     * Preferences helper.
+     */
+    private val preferences: PreferencesHelper by injectLazy()
+
     override fun onCreate(savedState: Bundle?) {
         super.onCreate(savedState)
         setHasOptionsMenu(true)
@@ -63,7 +71,19 @@ class MangaInfoFragment : BaseRxFragment<MangaInfoPresenter>() {
 
     override fun onViewCreated(view: View?, savedState: Bundle?) {
         // Set onclickListener to toggle favorite when FAB clicked.
-        fab_favorite.setOnClickListener { toggleFavorite() }
+        fab_favorite.setOnClickListener {
+            if(!presenter.manga.favorite) {
+                val defaultCategory = presenter.getCategories().find { it.id == preferences.defaultCategory()}
+                if(defaultCategory == null) {
+                    onFabClick()
+                } else {
+                    toggleFavorite()
+                    presenter.moveMangaToCategory(defaultCategory, presenter.manga)
+                }
+            } else {
+                toggleFavorite()
+            }
+        }
 
         // Set SwipeRefresh to refresh manga data.
         swipe_refresh.setOnRefreshListener { fetchMangaFromSource() }
@@ -334,4 +354,40 @@ class MangaInfoFragment : BaseRxFragment<MangaInfoPresenter>() {
         swipe_refresh.isRefreshing = value
     }
 
+    /**
+     * Called when the fab is clicked.
+     */
+    private fun onFabClick() {
+        val categories = presenter.getCategories()
+
+        MaterialDialog.Builder(activity)
+                .title(R.string.action_move_category)
+                .items(categories.map { it.name })
+                .itemsCallbackMultiChoice(presenter.getMangaCategoryIds(presenter.manga)) { dialog, position, text ->
+                    if (position.contains(0) && position.count() > 1) {
+                        dialog.setSelectedIndices(position.filter {it > 0}.toTypedArray())
+                        Toast.makeText(dialog.context, R.string.invalid_combination, Toast.LENGTH_SHORT).show()
+                    }
+
+                    true
+                }
+                .alwaysCallMultiChoiceCallback()
+                .positiveText(android.R.string.ok)
+                .negativeText(android.R.string.cancel)
+                .onPositive { dialog, _ ->
+                    val selectedCategories = dialog.selectedIndices?.map { categories[it] } ?: emptyList()
+
+                    if(!selectedCategories.isEmpty()) {
+                        if(!presenter.manga.favorite) {
+                            toggleFavorite()
+                        }
+                        presenter.moveMangaToCategories(selectedCategories.filter { it.id != 0}, presenter.manga)
+                    } else {
+                        toggleFavorite()
+                    }
+                }
+                .build()
+                .show()
+    }
+
 }

app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoPresenter.kt

@@ -3,7 +3,9 @@ package eu.kanade.tachiyomi.ui.manga.info
 import android.os.Bundle
 import eu.kanade.tachiyomi.data.cache.CoverCache
 import eu.kanade.tachiyomi.data.database.DatabaseHelper
+import eu.kanade.tachiyomi.data.database.models.Category
 import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.database.models.MangaCategory
 import eu.kanade.tachiyomi.data.download.DownloadManager
 import eu.kanade.tachiyomi.source.Source
 import eu.kanade.tachiyomi.source.SourceManager
@@ -76,9 +78,12 @@ class MangaInfoPresenter : BasePresenter<MangaInfoFragment>() {
                 ?.subscribeLatestCache(MangaInfoFragment::setChapterCount)
 
         // Update favorite status
-        SharedData.get(MangaFavoriteEvent::class.java)?.observable
-                ?.observeOn(AndroidSchedulers.mainThread())
-                ?.subscribe { setFavorite(it) }
+        SharedData.get(MangaFavoriteEvent::class.java)?.let {
+            it.observable
+                    .observeOn(AndroidSchedulers.mainThread())
+                    .subscribe { setFavorite(it) }
+                    .apply { add(this) }
+        }
     }
 
     /**
@@ -148,4 +153,49 @@ class MangaInfoPresenter : BasePresenter<MangaInfoFragment>() {
         downloadManager.findMangaDir(source, manga)?.delete()
     }
 
+    /**
+     * Get the default, and user categories.
+     *
+     * @return List of categories, default plus user categories
+     */
+    fun getCategories(): List<Category> {
+        return arrayListOf(Category.createDefault()) + db.getCategories().executeAsBlocking()
+    }
+
+    /**
+     * Gets the category id's the manga is in, if the manga is not in a category, returns the default id.
+     *
+     * @param manga the manga to get categories from.
+     * @return Array of category ids the manga is in, if none returns default id
+     */
+    fun getMangaCategoryIds(manga: Manga): Array<Int?> {
+        val categories = db.getCategoriesForManga(manga).executeAsBlocking()
+        if(categories.isEmpty()) {
+            return arrayListOf(Category.createDefault().id).toTypedArray()
+        }
+        return categories.map { it.id }.toTypedArray()
+    }
+
+    /**
+     * Move the given manga to categories.
+     *
+     * @param categories the selected categories.
+     * @param manga the manga to move.
+     */
+    fun moveMangaToCategories(categories: List<Category>, manga: Manga) {
+        val mc = categories.map { MangaCategory.create(manga, it) }
+
+        db.setMangaCategories(mc, arrayListOf(manga))
+    }
+
+    /**
+     * Move the given manga to the category.
+     *
+     * @param category the selected category.
+     * @param manga the manga to move.
+     */
+    fun moveMangaToCategory(category: Category, manga: Manga) {
+        moveMangaToCategories(arrayListOf(category), manga)
+    }
+
 }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderPresenter.kt

@@ -607,13 +607,17 @@ class ReaderPresenter : BasePresenter<ReaderActivity>() {
                         }
                     }
 
+                    DiskUtil.scanMedia(context, destFile)
+
                     imageNotifier.onComplete(destFile)
                 }
                 .subscribeOn(Schedulers.io())
-                .subscribe({},
-                        { error ->
-                            Timber.e(error)
-                            imageNotifier.onError(error.message)
-                        })
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe({
+                    context.toast(R.string.picture_saved)
+                }, { error ->
+                    Timber.e(error)
+                    imageNotifier.onError(error.message)
+                })
     }
 }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerReader.kt

@@ -230,7 +230,10 @@ abstract class PagerReader : BaseReader() {
      */
     protected fun setPagesOnAdapter() {
         if (pages.isNotEmpty()) {
+            // Prevent a wrong active page when changing chapters with the navigation buttons.
+            val currPage = currentPage
             adapter.pages = pages
+            currentPage = currPage
             if (currentPage == pager.currentItem) {
                 onPageChanged(currentPage)
             } else {

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonHolder.kt

@@ -76,10 +76,10 @@ class WebtoonHolder(private val view: View, private val adapter: WebtoonAdapter)
             })
         }
 
-        view.progress_container.minimumHeight = view.resources.displayMetrics.heightPixels * 2
+        view.progress_container.minimumHeight = webtoonReader.screenHeight
 
         view.setOnTouchListener(adapter.touchListener)
-        view.retry_button.setOnTouchListener { v, event ->
+        view.retry_button.setOnTouchListener { _, event ->
             if (event.action == MotionEvent.ACTION_UP) {
                 readerActivity.presenter.retryPage(page)
             }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonReader.kt

@@ -1,7 +1,9 @@
 package eu.kanade.tachiyomi.ui.reader.viewer.webtoon
 
+import android.os.Build
 import android.os.Bundle
 import android.support.v7.widget.RecyclerView
+import android.util.DisplayMetrics
 import android.view.*
 import android.view.ViewGroup.LayoutParams.MATCH_PARENT
 import android.view.ViewGroup.LayoutParams.WRAP_CONTENT
@@ -64,6 +66,19 @@ class WebtoonReader : BaseReader() {
 
     private var scrollDistance: Int = 0
 
+    val screenHeight by lazy {
+        val display = activity.windowManager.defaultDisplay
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            val metrics = DisplayMetrics()
+            display.getRealMetrics(metrics)
+            metrics.heightPixels
+        } else {
+            val field = Display::class.java.getMethod("getRawHeight")
+            field.invoke(display) as Int
+        }
+    }
+
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedState: Bundle?): View? {
         adapter = WebtoonAdapter(this)
 
@@ -72,9 +87,6 @@ class WebtoonReader : BaseReader() {
 
         layoutManager = PreCachingLayoutManager(activity)
         layoutManager.extraLayoutSpace = screenHeight / 2
-        if (savedState != null) {
-            layoutManager.scrollToPositionWithOffset(savedState.getInt(SAVED_POSITION), 0)
-        }
 
         recycler = RecyclerView(activity).apply {
             layoutParams = ViewGroup.LayoutParams(MATCH_PARENT, WRAP_CONTENT)
@@ -107,6 +119,26 @@ class WebtoonReader : BaseReader() {
         return recycler
     }
 
+
+    /**
+     * Uses two ways to scroll to the last page read.
+     */
+    private fun scrollToLastPageRead(page: Int) {
+        // Scrolls to the correct page initially, but isn't reliable beyond that.
+        recycler.addOnLayoutChangeListener(object: View.OnLayoutChangeListener {
+            override fun onLayoutChange(p0: View?, p1: Int, p2: Int, p3: Int, p4: Int, p5: Int, p6: Int, p7: Int, p8: Int) {
+                if(pages.isEmpty()) {
+                    setActivePage(page)
+                } else {
+                    recycler.removeOnLayoutChangeListener(this)
+                }
+            }
+        })
+
+        // Scrolls to the correct page after app has been in use, but can't do it the very first time.
+        recycler.post { setActivePage(page) }
+    }
+
     override fun onDestroyView() {
         subscriptions.unsubscribe()
         super.onDestroyView()
@@ -150,6 +182,7 @@ class WebtoonReader : BaseReader() {
         // Make sure the view is already initialized.
         if (view != null) {
             setPagesOnAdapter()
+            scrollToLastPageRead(this.currentPage)
         }
     }
 

app/src/main/java/eu/kanade/tachiyomi/ui/recent_updates/RecentChaptersFragment.kt

@@ -2,6 +2,7 @@ package eu.kanade.tachiyomi.ui.recent_updates
 
 import android.os.Bundle
 import android.support.v4.app.DialogFragment
+import android.support.v7.app.AppCompatActivity
 import android.support.v7.view.ActionMode
 import android.support.v7.widget.DividerItemDecoration
 import android.support.v7.widget.LinearLayoutManager
@@ -142,7 +143,7 @@ class RecentChaptersFragment:
      */
     override fun onItemLongClick(position: Int) {
         if (actionMode == null)
-            actionMode = activity.startSupportActionMode(this)
+            actionMode = (activity as AppCompatActivity).startSupportActionMode(this)
 
         toggleSelection(position)
     }

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsActivity.kt

@@ -65,6 +65,7 @@ class SettingsActivity : BaseActivity(),
             "downloads_screen" -> SettingsDownloadsFragment.newInstance(key)
             "sources_screen" -> SettingsSourcesFragment.newInstance(key)
             "tracking_screen" -> SettingsTrackingFragment.newInstance(key)
+            "backup_screen" -> SettingsBackupFragment.newInstance(key)
             "advanced_screen" -> SettingsAdvancedFragment.newInstance(key)
             "about_screen" -> SettingsAboutFragment.newInstance(key)
             else -> SettingsFragment.newInstance(key)

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsAdvancedFragment.kt

@@ -108,6 +108,7 @@ class SettingsAdvancedFragment : SettingsFragment() {
                 .onPositive { dialog, which ->
                     (activity as SettingsActivity).parentFlags = SettingsActivity.FLAG_DATABASE_CLEARED
                     db.deleteMangasNotInLibrary().executeAsBlocking()
+                    db.deleteHistoryNoLastRead().executeAsBlocking()
                     activity.toast(R.string.clear_database_completed)
                 }
                 .show()

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsBackupFragment.kt

@@ -0,0 +1,422 @@
+package eu.kanade.tachiyomi.ui.setting
+
+import android.app.Activity
+import android.app.Dialog
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import android.net.Uri
+import android.os.Build
+import android.os.Bundle
+import android.support.v7.preference.XpPreferenceFragment
+import android.view.View
+import com.afollestad.materialdialogs.MaterialDialog
+import com.hippo.unifile.UniFile
+import com.nononsenseapps.filepicker.FilePickerActivity
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.backup.BackupCreateService
+import eu.kanade.tachiyomi.data.backup.BackupCreatorJob
+import eu.kanade.tachiyomi.data.backup.BackupRestoreService
+import eu.kanade.tachiyomi.data.backup.models.Backup
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.preference.getOrDefault
+import eu.kanade.tachiyomi.ui.base.activity.BaseActivity
+import eu.kanade.tachiyomi.util.*
+import eu.kanade.tachiyomi.widget.CustomLayoutPickerActivity
+import eu.kanade.tachiyomi.widget.preference.IntListPreference
+import net.xpece.android.support.preference.Preference
+import rx.subscriptions.Subscriptions
+import uy.kohesive.injekt.injectLazy
+import java.io.File
+import java.util.concurrent.TimeUnit
+import eu.kanade.tachiyomi.BuildConfig.APPLICATION_ID as ID
+
+/**
+ * Settings for [BackupCreateService] and [BackupRestoreService]
+ */
+class SettingsBackupFragment : SettingsFragment() {
+
+    companion object {
+        const val INTENT_FILTER = "SettingsBackupFragment"
+        const val ACTION_BACKUP_COMPLETED_DIALOG = "$ID.$INTENT_FILTER.ACTION_BACKUP_COMPLETED_DIALOG"
+        const val ACTION_SET_PROGRESS_DIALOG = "$ID.$INTENT_FILTER.ACTION_SET_PROGRESS_DIALOG"
+        const val ACTION_ERROR_BACKUP_DIALOG = "$ID.$INTENT_FILTER.ACTION_ERROR_BACKUP_DIALOG"
+        const val ACTION_ERROR_RESTORE_DIALOG = "$ID.$INTENT_FILTER.ACTION_ERROR_RESTORE_DIALOG"
+        const val ACTION_RESTORE_COMPLETED_DIALOG = "$ID.$INTENT_FILTER.ACTION_RESTORE_COMPLETED_DIALOG"
+        const val ACTION = "$ID.$INTENT_FILTER.ACTION"
+        const val EXTRA_PROGRESS = "$ID.$INTENT_FILTER.EXTRA_PROGRESS"
+        const val EXTRA_AMOUNT = "$ID.$INTENT_FILTER.EXTRA_AMOUNT"
+        const val EXTRA_ERRORS = "$ID.$INTENT_FILTER.EXTRA_ERRORS"
+        const val EXTRA_CONTENT = "$ID.$INTENT_FILTER.EXTRA_CONTENT"
+        const val EXTRA_ERROR_MESSAGE = "$ID.$INTENT_FILTER.EXTRA_ERROR_MESSAGE"
+        const val EXTRA_URI = "$ID.$INTENT_FILTER.EXTRA_URI"
+        const val EXTRA_TIME = "$ID.$INTENT_FILTER.EXTRA_TIME"
+        const val EXTRA_ERROR_FILE_PATH = "$ID.$INTENT_FILTER.EXTRA_ERROR_FILE_PATH"
+        const val EXTRA_ERROR_FILE = "$ID.$INTENT_FILTER.EXTRA_ERROR_FILE"
+
+        private const val BACKUP_CREATE = 201
+        private const val BACKUP_RESTORE = 202
+        private const val BACKUP_DIR = 203
+
+        fun newInstance(rootKey: String): SettingsBackupFragment {
+            val args = Bundle()
+            args.putString(XpPreferenceFragment.ARG_PREFERENCE_ROOT, rootKey)
+            return SettingsBackupFragment().apply { arguments = args }
+        }
+    }
+
+    /**
+     * Preference selected to create backup
+     */
+    private val createBackup: Preference by bindPref(R.string.pref_create_local_backup_key)
+
+    /**
+     * Preference selected to restore backup
+     */
+    private val restoreBackup: Preference by bindPref(R.string.pref_restore_local_backup_key)
+
+    /**
+     * Preference which determines the frequency of automatic backups.
+     */
+    private val automaticBackup: IntListPreference by bindPref(R.string.pref_backup_interval_key)
+
+    /**
+     * Preference containing number of automatic backups
+     */
+    private val backupSlots: IntListPreference by bindPref(R.string.pref_backup_slots_key)
+
+    /**
+     * Preference containing interval of automatic backups
+     */
+    private val backupDirPref: Preference by bindPref(R.string.pref_backup_directory_key)
+
+    /**
+     * Preferences
+     */
+    private val preferences: PreferencesHelper by injectLazy()
+
+    /**
+     * Value containing information on what to backup
+     */
+    private var backup_flags = 0
+
+    /**
+     * The root directory for backups..
+     */
+    private var backupDir = preferences.backupsDirectory().getOrDefault().let {
+        UniFile.fromUri(context, Uri.parse(it))
+    }
+
+    val restoreDialog: MaterialDialog by lazy {
+        MaterialDialog.Builder(context)
+                .title(R.string.backup)
+                .content(R.string.restoring_backup)
+                .progress(false, 100, true)
+                .cancelable(false)
+                .negativeText(R.string.action_stop)
+                .onNegative { materialDialog, _ ->
+                    BackupRestoreService.stop(context)
+                    materialDialog.dismiss()
+                }
+                .build()
+    }
+
+    val backupDialog: MaterialDialog by lazy {
+        MaterialDialog.Builder(context)
+                .title(R.string.backup)
+                .content(R.string.creating_backup)
+                .progress(true, 0)
+                .cancelable(false)
+                .build()
+    }
+
+    private val receiver = object : BroadcastReceiver() {
+
+        override fun onReceive(context: Context, intent: Intent) {
+            when (intent.getStringExtra(ACTION)) {
+                ACTION_BACKUP_COMPLETED_DIALOG -> {
+                    backupDialog.dismiss()
+                    val uri = Uri.parse(intent.getStringExtra(EXTRA_URI))
+                    val file = UniFile.fromUri(context, uri)
+                    MaterialDialog.Builder(this@SettingsBackupFragment.context)
+                            .title(getString(R.string.backup_created))
+                            .content(getString(R.string.file_saved, file.filePath))
+                            .positiveText(getString(R.string.action_close))
+                            .negativeText(getString(R.string.action_export))
+                            .onPositive { materialDialog, _ -> materialDialog.dismiss() }
+                            .onNegative { _, _ ->
+                                val sendIntent = Intent(Intent.ACTION_SEND)
+                                sendIntent.type = "application/json"
+                                sendIntent.putExtra(Intent.EXTRA_STREAM, file.uri)
+                                startActivity(Intent.createChooser(sendIntent, ""))
+                            }
+                            .safeShow()
+
+                }
+                ACTION_SET_PROGRESS_DIALOG -> {
+                    val progress = intent.getIntExtra(EXTRA_PROGRESS, 0)
+                    val amount = intent.getIntExtra(EXTRA_AMOUNT, 0)
+                    val content = intent.getStringExtra(EXTRA_CONTENT)
+                    restoreDialog.setContent(content)
+                    restoreDialog.setProgress(progress)
+                    restoreDialog.maxProgress = amount
+                }
+                ACTION_RESTORE_COMPLETED_DIALOG -> {
+                    restoreDialog.dismiss()
+                    val time = intent.getLongExtra(EXTRA_TIME, 0)
+                    val errors = intent.getIntExtra(EXTRA_ERRORS, 0)
+                    val path = intent.getStringExtra(EXTRA_ERROR_FILE_PATH)
+                    val file = intent.getStringExtra(EXTRA_ERROR_FILE)
+                    val timeString = String.format("%02d min, %02d sec",
+                            TimeUnit.MILLISECONDS.toMinutes(time),
+                            TimeUnit.MILLISECONDS.toSeconds(time) -
+                                    TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(time))
+                    )
+
+                    if (errors > 0) {
+                        MaterialDialog.Builder(this@SettingsBackupFragment.context)
+                                .title(getString(R.string.restore_completed))
+                                .content(getString(R.string.restore_completed_content, timeString,
+                                        if (errors > 0) "$errors" else getString(android.R.string.no)))
+                                .positiveText(getString(R.string.action_close))
+                                .negativeText(getString(R.string.action_open_log))
+                                .onPositive { materialDialog, _ -> materialDialog.dismiss() }
+                                .onNegative { materialDialog, _ ->
+                                    if (!path.isEmpty()) {
+                                        val destFile = File(path, file)
+                                        val uri = destFile.getUriCompat(context)
+                                        val sendIntent = Intent(Intent.ACTION_VIEW).apply {
+                                            setDataAndType(uri, "text/plain")
+                                            flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_GRANT_READ_URI_PERMISSION
+                                        }
+                                        startActivity(sendIntent)
+                                    } else {
+                                        context.toast(getString(R.string.error_opening_log))
+                                    }
+                                    materialDialog.dismiss()
+                                }
+                                .safeShow()
+                    }
+                }
+                ACTION_ERROR_BACKUP_DIALOG -> {
+                    context.toast(intent.getStringExtra(EXTRA_ERROR_MESSAGE))
+                    backupDialog.dismiss()
+                }
+                ACTION_ERROR_RESTORE_DIALOG -> {
+                    context.toast(intent.getStringExtra(EXTRA_ERROR_MESSAGE))
+                    restoreDialog.dismiss()
+                }
+            }
+        }
+
+    }
+
+    override fun onStart() {
+        super.onStart()
+        context.registerLocalReceiver(receiver, IntentFilter(INTENT_FILTER))
+    }
+
+    override fun onPause() {
+        context.unregisterLocalReceiver(receiver)
+        super.onPause()
+    }
+
+    override fun onViewCreated(view: View, savedState: Bundle?) {
+        super.onViewCreated(view, savedState)
+
+        if (savedState != null) {
+            if (BackupRestoreService.isRunning(context)) {
+                restoreDialog.safeShow()
+            }
+            else if (BackupCreateService.isRunning(context)) {
+                backupDialog.safeShow()
+            }
+        }
+
+        (activity as BaseActivity).requestPermissionsOnMarshmallow()
+
+        // Set onClickListeners
+        createBackup.setOnPreferenceClickListener {
+            MaterialDialog.Builder(context)
+                    .title(R.string.pref_create_backup)
+                    .content(R.string.backup_choice)
+                    .items(R.array.backup_options)
+                    .itemsCallbackMultiChoice(arrayOf(0, 1, 2, 3, 4 /*todo not hard code*/)) { _, positions, _ ->
+                        // TODO not very happy with global value, but putExtra doesn't work
+                        backup_flags = 0
+                        for (i in 1..positions.size - 1) {
+                            when (positions[i]) {
+                                1 -> backup_flags = backup_flags or BackupCreateService.BACKUP_CATEGORY
+                                2 -> backup_flags = backup_flags or BackupCreateService.BACKUP_CHAPTER
+                                3 -> backup_flags = backup_flags or BackupCreateService.BACKUP_TRACK
+                                4 -> backup_flags = backup_flags or BackupCreateService.BACKUP_HISTORY
+                            }
+                        }
+                        // If API lower as KitKat use custom dir picker
+                        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
+                            // Get dirs
+                            val currentDir = preferences.backupsDirectory().getOrDefault()
+
+                            val i = Intent(activity, CustomLayoutPickerActivity::class.java)
+                            i.putExtra(FilePickerActivity.EXTRA_ALLOW_MULTIPLE, false)
+                            i.putExtra(FilePickerActivity.EXTRA_ALLOW_CREATE_DIR, true)
+                            i.putExtra(FilePickerActivity.EXTRA_MODE, FilePickerActivity.MODE_DIR)
+                            i.putExtra(FilePickerActivity.EXTRA_START_PATH, currentDir)
+                            startActivityForResult(i, BACKUP_CREATE)
+                        } else {
+                            // Use Androids build in file creator
+                            val intent = Intent(Intent.ACTION_CREATE_DOCUMENT)
+                            intent.addCategory(Intent.CATEGORY_OPENABLE)
+
+                            // TODO create custom MIME data type? Will make older backups deprecated
+                            intent.type = "application/*"
+                            intent.putExtra(Intent.EXTRA_TITLE, Backup.getDefaultFilename())
+                            startActivityForResult(intent, BACKUP_CREATE)
+                        }
+                        true
+                    }
+                    .itemsDisabledIndices(0)
+                    .positiveText(getString(R.string.action_create))
+                    .negativeText(android.R.string.cancel)
+                    .safeShow()
+            true
+        }
+
+        restoreBackup.setOnPreferenceClickListener {
+            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
+                val intent = Intent()
+                intent.type = "application/*"
+                intent.action = Intent.ACTION_GET_CONTENT
+                startActivityForResult(Intent.createChooser(intent, getString(R.string.file_select_backup)), BACKUP_RESTORE)
+            } else {
+                val intent = Intent(Intent.ACTION_OPEN_DOCUMENT)
+                intent.addCategory(Intent.CATEGORY_OPENABLE)
+                intent.type = "application/*"
+                startActivityForResult(intent, BACKUP_RESTORE)
+            }
+            true
+        }
+
+        automaticBackup.setOnPreferenceChangeListener { _, newValue ->
+            // Always cancel the previous task, it seems that sometimes they are not updated.
+            BackupCreatorJob.cancelTask()
+
+            val interval = (newValue as String).toInt()
+            if (interval > 0) {
+                BackupCreatorJob.setupTask(interval)
+            }
+            true
+        }
+
+        backupSlots.setOnPreferenceChangeListener { preference, newValue ->
+            preferences.numberOfBackups().set((newValue as String).toInt())
+            preference.summary = newValue
+            true
+        }
+
+        backupDirPref.setOnPreferenceClickListener {
+            val currentDir = preferences.backupsDirectory().getOrDefault()
+
+            if (Build.VERSION.SDK_INT < 21) {
+                // Custom dir selected, open directory selector
+                val i = Intent(activity, CustomLayoutPickerActivity::class.java)
+                i.putExtra(FilePickerActivity.EXTRA_ALLOW_MULTIPLE, false)
+                i.putExtra(FilePickerActivity.EXTRA_ALLOW_CREATE_DIR, true)
+                i.putExtra(FilePickerActivity.EXTRA_MODE, FilePickerActivity.MODE_DIR)
+                i.putExtra(FilePickerActivity.EXTRA_START_PATH, currentDir)
+
+                startActivityForResult(i, BACKUP_DIR)
+            } else {
+                val i = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
+                startActivityForResult(i, BACKUP_DIR)
+            }
+
+            true
+        }
+
+        subscriptions += preferences.backupsDirectory().asObservable()
+                .subscribe { path ->
+                    backupDir = UniFile.fromUri(context, Uri.parse(path))
+                    backupDirPref.summary = backupDir.filePath ?: path
+                }
+
+        subscriptions += preferences.backupInterval().asObservable()
+                .subscribe {
+                    backupDirPref.isVisible = it > 0
+                    backupSlots.isVisible = it > 0
+                }
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        when (requestCode) {
+            BACKUP_DIR -> if (data != null && resultCode == Activity.RESULT_OK) {
+                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+                    val uri = Uri.fromFile(File(data.data.path))
+                    preferences.backupsDirectory().set(uri.toString())
+                } else {
+                    val uri = data.data
+                    val flags = Intent.FLAG_GRANT_READ_URI_PERMISSION or
+                            Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+
+                    context.contentResolver.takePersistableUriPermission(uri, flags)
+
+                    val file = UniFile.fromUri(context, uri)
+                    preferences.backupsDirectory().set(file.uri.toString())
+                }
+            }
+            BACKUP_CREATE -> if (data != null && resultCode == Activity.RESULT_OK) {
+                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
+                    val dir = data.data.path
+                    val file = File(dir, Backup.getDefaultFilename())
+
+                    backupDialog.safeShow()
+                    BackupCreateService.makeBackup(context, file.toURI().toString(), backup_flags)
+                } else {
+                    val uri = data.data
+                    val flags = Intent.FLAG_GRANT_READ_URI_PERMISSION or
+                            Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+
+                    context.contentResolver.takePersistableUriPermission(uri, flags)
+                    val file = UniFile.fromUri(context, uri)
+
+                    backupDialog.safeShow()
+                    BackupCreateService.makeBackup(context, file.uri.toString(), backup_flags)
+                }
+            }
+            BACKUP_RESTORE -> if (data != null && resultCode == Activity.RESULT_OK) {
+                val uri = if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
+                    Uri.fromFile(File(data.data.path))
+                } else {
+                    val uri = data.data
+                    val flags = Intent.FLAG_GRANT_READ_URI_PERMISSION or
+                            Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+
+                    context.contentResolver.takePersistableUriPermission(uri, flags)
+                    UniFile.fromUri(context, uri).uri
+                }
+
+                MaterialDialog.Builder(context)
+                        .title(getString(R.string.pref_restore_backup))
+                        .content(getString(R.string.backup_restore_content))
+                        .positiveText(getString(R.string.action_restore))
+                        .onPositive { _, _ ->
+                            restoreDialog.safeShow()
+                            BackupRestoreService.start(context, uri.toString())
+                        }
+                        .safeShow()
+            }
+        }
+    }
+
+    fun MaterialDialog.Builder.safeShow(): Dialog {
+        return build().safeShow()
+    }
+
+    fun Dialog.safeShow(): Dialog {
+        subscriptions += Subscriptions.create { dismiss() }
+        show()
+        return this
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsDownloadsFragment.kt

@@ -9,20 +9,17 @@ import android.os.Environment
 import android.support.v4.content.ContextCompat
 import android.support.v7.preference.Preference
 import android.support.v7.preference.XpPreferenceFragment
-import android.support.v7.widget.RecyclerView
 import android.view.View
-import android.view.ViewGroup
 import com.afollestad.materialdialogs.MaterialDialog
 import com.hippo.unifile.UniFile
-import com.nononsenseapps.filepicker.AbstractFilePickerFragment
 import com.nononsenseapps.filepicker.FilePickerActivity
-import com.nononsenseapps.filepicker.FilePickerFragment
-import com.nononsenseapps.filepicker.LogicHandler
 import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.database.DatabaseHelper
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.data.preference.getOrDefault
-import eu.kanade.tachiyomi.util.inflate
 import eu.kanade.tachiyomi.util.plusAssign
+import eu.kanade.tachiyomi.widget.CustomLayoutPickerActivity
+import net.xpece.android.support.preference.MultiSelectListPreference
 import uy.kohesive.injekt.injectLazy
 import java.io.File
 
@@ -41,8 +38,12 @@ class SettingsDownloadsFragment : SettingsFragment() {
 
     private val preferences: PreferencesHelper by injectLazy()
 
+    private val db: DatabaseHelper by injectLazy()
+
     val downloadDirPref: Preference by bindPref(R.string.pref_download_directory_key)
 
+    val downloadCategory: MultiSelectListPreference by bindPref(R.string.pref_download_new_categories_key)
+
     override fun onViewCreated(view: View, savedState: Bundle?) {
         super.onViewCreated(view, savedState)
 
@@ -92,6 +93,29 @@ class SettingsDownloadsFragment : SettingsFragment() {
                         dir.createFile(".nomedia")
                     }
                 }
+
+        subscriptions += preferences.downloadNew().asObservable()
+                .subscribe { downloadCategory.isVisible = it }
+
+        val dbCategories = db.getCategories().executeAsBlocking()
+        downloadCategory.apply {
+            entries = dbCategories.map { it.name }.toTypedArray()
+            entryValues = dbCategories.map { it.id.toString() }.toTypedArray()
+        }
+
+        subscriptions += preferences.downloadNewCategories().asObservable()
+                .subscribe {
+                    val selectedCategories = it
+                            .mapNotNull { id -> dbCategories.find { it.id == id.toInt() } }
+                            .sortedBy { it.order }
+
+                    val summary = if (selectedCategories.isEmpty())
+                        getString(R.string.all)
+                    else
+                        selectedCategories.joinToString { it.name }
+
+                    downloadCategory.summary = summary
+                }
     }
 
     fun getExternalFilesDirs(): List<File> {
@@ -122,27 +146,4 @@ class SettingsDownloadsFragment : SettingsFragment() {
             }
         }
     }
-
-    class CustomLayoutPickerActivity : FilePickerActivity() {
-
-        override fun getFragment(startPath: String?, mode: Int, allowMultiple: Boolean, allowCreateDir: Boolean):
-                AbstractFilePickerFragment<File> {
-            val fragment = CustomLayoutFilePickerFragment()
-            fragment.setArgs(startPath, mode, allowMultiple, allowCreateDir)
-            return fragment
-        }
-    }
-
-    class CustomLayoutFilePickerFragment : FilePickerFragment() {
-        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
-            when (viewType) {
-                LogicHandler.VIEWTYPE_DIR -> {
-                    val view = parent.inflate(R.layout.listitem_dir)
-                    return DirViewHolder(view)
-                }
-                else -> return super.onCreateViewHolder(parent, viewType)
-            }
-        }
-    }
-
 }

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsFragment.kt

@@ -29,6 +29,7 @@ open class SettingsFragment : XpPreferenceFragment() {
         addPreferencesFromResource(R.xml.pref_downloads)
         addPreferencesFromResource(R.xml.pref_sources)
         addPreferencesFromResource(R.xml.pref_tracking)
+        addPreferencesFromResource(R.xml.pref_backup)
         addPreferencesFromResource(R.xml.pref_advanced)
         addPreferencesFromResource(R.xml.pref_about)
 

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsGeneralFragment.kt

@@ -7,6 +7,7 @@ import android.support.v7.preference.XpPreferenceFragment
 import android.view.View
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.database.DatabaseHelper
+import eu.kanade.tachiyomi.data.database.models.Category
 import eu.kanade.tachiyomi.data.library.LibraryUpdateJob
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.util.LocaleHelper
@@ -46,6 +47,8 @@ class SettingsGeneralFragment : SettingsFragment(),
 
     val categoryUpdate: MultiSelectListPreference by bindPref(R.string.pref_library_update_categories_key)
 
+    val defaultCategory: IntListPreference by bindPref(R.string.default_category_key)
+
     val langPreference: ListPreference by bindPref(R.string.pref_language_key)
 
     override fun onViewCreated(view: View, savedState: Bundle?) {
@@ -100,6 +103,22 @@ class SettingsGeneralFragment : SettingsFragment(),
                     categoryUpdate.summary = summary
                 }
 
+        defaultCategory.apply {
+            val selectedCategory = dbCategories.find { it.id == preferences.defaultCategory()}
+            value = selectedCategory?.id?.toString() ?: value
+            entries += dbCategories.map { it.name }.toTypedArray()
+            entryValues += dbCategories.map { it.id.toString() }.toTypedArray()
+            summary = selectedCategory?.name ?: summary
+        }
+
+        defaultCategory.setOnPreferenceChangeListener { _, newValue ->
+            defaultCategory.summary = dbCategories.find {
+                it.id == (newValue as String).toInt()
+            }?.name ?: getString(R.string.default_category_summary)
+
+            true
+        }
+
         themePreference.setOnPreferenceChangeListener { preference, newValue ->
             (activity as SettingsActivity).parentFlags = SettingsActivity.FLAG_THEME_CHANGED
             activity.recreate()

app/src/main/java/eu/kanade/tachiyomi/util/ContextExtensions.kt

@@ -122,7 +122,7 @@ fun Context.sendLocalBroadcastSync(intent: Intent) {
  *
  * @param receiver receiver that gets registered.
  */
-fun Context.registerLocalReceiver(receiver: BroadcastReceiver, filter: IntentFilter ){
+fun Context.registerLocalReceiver(receiver: BroadcastReceiver, filter: IntentFilter) {
     LocalBroadcastManager.getInstance(this).registerReceiver(receiver, filter)
 }
 
@@ -131,7 +131,7 @@ fun Context.registerLocalReceiver(receiver: BroadcastReceiver, filter: IntentFil
  *
  * @param receiver receiver that gets unregistered.
  */
-fun Context.unregisterLocalReceiver(receiver: BroadcastReceiver){
+fun Context.unregisterLocalReceiver(receiver: BroadcastReceiver) {
     LocalBroadcastManager.getInstance(this).unregisterReceiver(receiver)
 }
 

app/src/main/java/eu/kanade/tachiyomi/util/DiskUtil.kt

@@ -1,6 +1,9 @@
 package eu.kanade.tachiyomi.util
 
 import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
 import android.os.Environment
 import android.support.v4.content.ContextCompat
 import android.support.v4.os.EnvironmentCompat
@@ -13,8 +16,11 @@ import java.security.NoSuchAlgorithmException
 object DiskUtil {
 
     fun isImage(name: String, openStream: (() -> InputStream)? = null): Boolean {
-        val contentType = URLConnection.guessContentTypeFromName(name)
-                ?: openStream?.let { findImageMime(it) }
+        val contentType = try {
+            URLConnection.guessContentTypeFromName(name)
+        } catch (e: Exception) {
+            null
+        } ?: openStream?.let { findImageMime(it) }
 
         return contentType?.startsWith("image/") ?: false
     }
@@ -73,8 +79,9 @@ object DiskUtil {
     /**
      * Returns the root folders of all the available external storages.
      */
-    fun getExternalStorages(context: Context): List<File> {
-        return ContextCompat.getExternalFilesDirs(context, null)
+    fun getExternalStorages(context: Context): Collection<File> {
+        val directories = mutableSetOf<File>()
+        directories += ContextCompat.getExternalFilesDirs(context, null)
                 .filterNotNull()
                 .mapNotNull {
                     val file = File(it.absolutePath.substringBefore("/Android/"))
@@ -85,6 +92,29 @@ object DiskUtil {
                         null
                     }
                 }
+
+        if (Build.VERSION.SDK_INT < 21) {
+            val extStorages = System.getenv("SECONDARY_STORAGE")
+            if (extStorages != null) {
+                directories += extStorages.split(":").map(::File)
+            }
+        }
+
+        return directories
+    }
+
+    /**
+     * Scans the given file so that it can be shown in gallery apps, for example.
+     */
+    fun scanMedia(context: Context, file: File) {
+        val action = if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
+            Intent.ACTION_MEDIA_MOUNTED
+        } else {
+            Intent.ACTION_MEDIA_SCANNER_SCAN_FILE
+        }
+        val mediaScanIntent = Intent(action)
+        mediaScanIntent.data = Uri.fromFile(file)
+        context.sendBroadcast(mediaScanIntent)
     }
 
     /**

app/src/main/java/eu/kanade/tachiyomi/util/FileExtensions.kt

@@ -19,15 +19,3 @@ fun File.getUriCompat(context: Context): Uri {
     return uri
 }
 
-/**
- * Deletes file if exists
- *
- * @return success of file deletion
- */
-fun File.deleteIfExists(): Boolean {
-    if (this.exists()) {
-        this.delete()
-        return true
-    }
-    return false
-}

app/src/main/java/eu/kanade/tachiyomi/widget/CustomLayoutPicker.kt

@@ -0,0 +1,33 @@
+package eu.kanade.tachiyomi.widget
+
+import android.support.v7.widget.RecyclerView
+import android.view.ViewGroup
+import com.nononsenseapps.filepicker.AbstractFilePickerFragment
+import com.nononsenseapps.filepicker.FilePickerActivity
+import com.nononsenseapps.filepicker.FilePickerFragment
+import com.nononsenseapps.filepicker.LogicHandler
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.util.inflate
+import java.io.File
+
+class CustomLayoutPickerActivity : FilePickerActivity() {
+
+    override fun getFragment(startPath: String?, mode: Int, allowMultiple: Boolean, allowCreateDir: Boolean):
+            AbstractFilePickerFragment<File> {
+        val fragment = CustomLayoutFilePickerFragment()
+        fragment.setArgs(startPath, mode, allowMultiple, allowCreateDir)
+        return fragment
+    }
+}
+
+class CustomLayoutFilePickerFragment : FilePickerFragment() {
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
+        when (viewType) {
+            LogicHandler.VIEWTYPE_DIR -> {
+                val view = parent.inflate(R.layout.listitem_dir)
+                return DirViewHolder(view)
+            }
+            else -> return super.onCreateViewHolder(parent, viewType)
+        }
+    }
+}

app/src/main/res/drawable/branded_logo.xml

@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android"
             android:opacity="opaque">
-    <item android:drawable="@color/background_material_light"/>
+    <item android:drawable="@color/material_grey_50"/>
     <item>
         <bitmap
-            android:src="@drawable/application_logo_144dp"
+            android:src="@drawable/branded_logo_icon"
             android:gravity="center"/>
     </item>
 </layer-list>

app/src/main/res/drawable/sc_book_48dp.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="48dp"
+    android:height="48dp"
+    android:viewportHeight="48"
+    android:viewportWidth="48">
+
+    <path
+        android:fillColor="@color/backgroundLight"
+        android:pathData="M24,24m-22,0a22,22 0,1 1,44 0a22,22 0,1 1,-44 0" />
+
+    <group
+        android:translateX="12"
+        android:translateY="12">
+        <path
+            android:fillColor="@color/colorPrimary"
+            android:pathData="M18,2H6c-1.1,0 -2,0.9 -2,2v16c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 2,-2V4c0,-1.1 -0.9,-2 -2,-2zM6,4h5v8l-2.5,-1.5L6,12V4z" />
+    </group>
+</vector>

app/src/main/res/drawable/sc_explore_48dp.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="48dp"
+    android:height="48dp"
+    android:viewportHeight="48"
+    android:viewportWidth="48">
+
+    <path
+        android:fillColor="@color/backgroundLight"
+        android:pathData="M24,24m-22,0a22,22 0,1 1,44 0a22,22 0,1 1,-44 0" />
+
+    <group
+        android:translateX="12"
+        android:translateY="12">
+        <path
+            android:fillColor="@color/colorPrimary"
+            android:pathData="M12,10.9c-0.61,0 -1.1,0.49 -1.1,1.1s0.49,1.1 1.1,1.1c0.61,0 1.1,-0.49 1.1,-1.1s-0.49,-1.1 -1.1,-1.1zM12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM14.19,14.19L6,18l3.81,-8.19L18,6l-3.81,8.19z" />
+    </group>
+</vector>

app/src/main/res/drawable/sc_glasses_48dp.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="48dp"
+    android:height="48dp"
+    android:viewportHeight="48"
+    android:viewportWidth="48">
+
+    <path
+        android:fillColor="@color/backgroundLight"
+        android:pathData="M24,24m-22,0a22,22 0,1 1,44 0a22,22 0,1 1,-44 0" />
+
+    <group
+        android:translateX="12"
+        android:translateY="12">
+        <path
+            android:fillColor="@color/colorPrimary"
+            android:pathData="M3,10C2.76,10 2.55,10.09 2.41,10.25C2.27,10.4 2.21,10.62 2.24,10.86L2.74,13.85C2.82,14.5 3.4,15 4,15H7C7.64,15 8.36,14.44 8.5,13.82L9.56,10.63C9.6,10.5 9.57,10.31 9.5,10.19C9.39,10.07 9.22,10 9,10H3M7,17H4C2.38,17 0.96,15.74 0.76,14.14L0.26,11.15C0.15,10.3 0.39,9.5 0.91,8.92C1.43,8.34 2.19,8 3,8H9C9.83,8 10.58,8.35 11.06,8.96C11.17,9.11 11.27,9.27 11.35,9.45C11.78,9.36 12.22,9.36 12.64,9.45C12.72,9.27 12.82,9.11 12.94,8.96C13.41,8.35 14.16,8 15,8H21C21.81,8 22.57,8.34 23.09,8.92C23.6,9.5 23.84,10.3 23.74,11.11L23.23,14.18C23.04,15.74 21.61,17 20,17H17C15.44,17 13.92,15.81 13.54,14.3L12.64,11.59C12.26,11.31 11.73,11.31 11.35,11.59L10.43,14.37C10.07,15.82 8.56,17 7,17M15,10C14.78,10 14.61,10.07 14.5,10.19C14.42,10.31 14.4,10.5 14.45,10.7L15.46,13.75C15.64,14.44 16.36,15 17,15H20C20.59,15 21.18,14.5 21.25,13.89L21.76,10.82C21.79,10.62 21.73,10.4 21.59,10.25C21.45,10.09 21.24,10 21,10H15Z" />
+    </group>
+</vector>

app/src/main/res/drawable/sc_update_48dp.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="48dp"
+    android:height="48dp"
+    android:viewportHeight="48"
+    android:viewportWidth="48">
+
+    <path
+        android:fillColor="@color/backgroundLight"
+        android:pathData="M24,24m-22,0a22,22 0,1 1,44 0a22,22 0,1 1,-44 0" />
+
+    <group
+        android:translateX="12"
+        android:translateY="12">
+        <path
+            android:fillColor="@color/colorPrimary"
+            android:pathData="M21,10.12h-6.78l2.74,-2.82c-2.73,-2.7 -7.15,-2.8 -9.88,-0.1 -2.73,2.71 -2.73,7.08 0,9.79 2.73,2.71 7.15,2.71 9.88,0C18.32,15.65 19,14.08 19,12.1h2c0,1.98 -0.88,4.55 -2.64,6.29 -3.51,3.48 -9.21,3.48 -12.72,0 -3.5,-3.47 -3.53,-9.11 -0.02,-12.58 3.51,-3.47 9.14,-3.47 12.65,0L21,3v7.12zM12.5,8v4.25l3.5,2.08 -0.72,1.21L11,13V8h1.5z" />
+    </group>
+</vector>

app/src/main/res/layout/fragment_manga_chapters.xml

@@ -13,8 +13,7 @@
         android:layout_height="match_parent"
         android:background="?attr/colorAccent"
         android:elevation="5dp"
-        android:visibility="invisible"
-        />
+        android:visibility="invisible"/>
 
     <android.support.v4.widget.SwipeRefreshLayout
         android:id="@+id/swipe_refresh"
@@ -36,6 +35,17 @@
 
     </android.support.v4.widget.SwipeRefreshLayout>
 
+    <eu.davidea.fastscroller.FastScroller
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:tools="http://schemas.android.com/tools"
+        android:id="@+id/fast_scroller"
+        android:layout_width="wrap_content"
+        android:layout_height="match_parent"
+        android:layout_centerHorizontal="true"
+        android:layout_gravity="end"
+        android:visibility="gone"
+        tools:visibility="visible"/>
+
     <android.support.design.widget.FloatingActionButton
         android:id="@+id/fab"
         style="@style/Theme.Widget.FAB"

app/src/main/res/layout/fragment_manga_info.xml

@@ -1,298 +1,266 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout
+<android.support.v4.widget.SwipeRefreshLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
+    tools:context="eu.kanade.tachiyomi.ui.catalogue.CatalogueFragment"
+    android:id="@id/swipe_refresh"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context="eu.kanade.tachiyomi.ui.catalogue.CatalogueFragment">
+    android:layout_height="match_parent">
 
-    <android.support.v4.widget.SwipeRefreshLayout
-        android:id="@id/swipe_refresh"
+    <android.support.constraint.ConstraintLayout
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        xmlns:tools="http://schemas.android.com/tools"
         android:layout_width="match_parent"
-        android:layout_height="match_parent">
+        android:layout_height="match_parent"
+        xmlns:android="http://schemas.android.com/apk/res/android">
 
-        <LinearLayout
-            android:id="@+id/global_view"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:orientation="vertical">
+        <android.support.constraint.Guideline
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:id="@+id/guideline"
+            android:orientation="horizontal"
+            app:layout_constraintGuide_percent="0.38"/>
 
-            <RelativeLayout
-                android:id="@+id/top_view"
+        <android.support.constraint.Guideline
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:id="@+id/guideline2"
+            android:orientation="vertical"
+            app:layout_constraintGuide_percent="0.38"/>
+
+        <ImageView
+            android:id="@+id/backdrop"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:alpha="0.2"
+            tools:background="@color/material_grey_700"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toTopOf="@+id/guideline"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"/>
+
+        <ImageView
+            android:id="@+id/manga_cover"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:contentDescription="@string/description_cover"
+            tools:background="@color/material_grey_700"
+            android:layout_marginTop="16dp"
+            android:layout_marginBottom="16dp"
+            android:layout_marginLeft="16dp"
+            android:layout_marginRight="16dp"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toTopOf="@+id/guideline"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toLeftOf="@+id/guideline2"/>
+
+        <android.support.design.widget.FloatingActionButton
+            android:id="@+id/fab_favorite"
+            style="@style/Theme.Widget.FAB"
+            app:srcCompat="@drawable/ic_bookmark_border_white_24dp"
+            android:layout_marginTop="0dp"
+            android:layout_marginBottom="0dp"
+            android:layout_marginRight="8dp"
+            app:layout_constraintTop_toBottomOf="@+id/guideline"
+            app:layout_constraintBottom_toTopOf="@+id/guideline"
+            app:layout_constraintRight_toRightOf="parent"/>
+
+        <android.support.v4.widget.NestedScrollView
+            android:id="@+id/info_scrollview"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:layout_marginTop="16dp"
+            android:layout_marginBottom="16dp"
+            android:layout_marginLeft="0dp"
+            android:layout_marginRight="16dp"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toTopOf="@+id/guideline"
+            app:layout_constraintLeft_toLeftOf="@+id/guideline2"
+            app:layout_constraintRight_toRightOf="parent">
+
+            <android.support.constraint.ConstraintLayout
                 android:layout_width="match_parent"
-                android:layout_height="0dp"
-                android:layout_weight="0.4">
+                android:layout_height="match_parent">
 
-                <ImageView
-                    android:id="@+id/backdrop"
-                    android:layout_width="match_parent"
-                    android:layout_height="match_parent"
-                    android:alpha="0.2"
-                    android:contentDescription="@string/description_backdrop"/>
+                <TextView
+                    android:id="@+id/manga_author_label"
+                    style="@style/TextAppearance.Medium.Body2"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/manga_info_author_label"
+                    android:textIsSelectable="false"
+                    app:layout_constraintTop_toTopOf="parent"
+                    app:layout_constraintLeft_toLeftOf="parent"/>
 
-                <LinearLayout
-                    android:layout_width="match_parent"
-                    android:layout_height="match_parent"
-                    android:orientation="horizontal">
+                <TextView
+                    android:id="@+id/manga_author"
+                    style="@style/TextAppearance.Regular.Body1.Secondary"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginLeft="8dp"
+                    android:ellipsize="end"
+                    android:maxLines="1"
+                    android:textIsSelectable="false"
+                    app:layout_constraintBaseline_toBaselineOf="@+id/manga_author_label"
+                    app:layout_constraintLeft_toRightOf="@+id/manga_author_label"
+                    app:layout_constraintRight_toRightOf="parent"/>
 
-                    <ImageView
-                        android:id="@+id/manga_cover"
-                        android:layout_width="0dp"
-                        android:layout_height="match_parent"
-                        android:layout_margin="@dimen/activity_vertical_margin"
-                        android:layout_weight="0.35"
-                        android:contentDescription="@string/description_cover"/>
+                <TextView
+                    android:id="@+id/manga_artist_label"
+                    style="@style/TextAppearance.Medium.Body2"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/manga_info_artist_label"
+                    android:textIsSelectable="false"
+                    app:layout_constraintTop_toBottomOf="@+id/manga_author_label"
+                    app:layout_constraintLeft_toLeftOf="parent"/>
 
-                    <RelativeLayout
-                        android:layout_width="0dp"
-                        android:layout_height="match_parent"
-                        android:layout_margin="@dimen/activity_vertical_margin"
-                        android:layout_weight="0.65">
+                <TextView
+                    android:id="@+id/manga_artist"
+                    style="@style/TextAppearance.Regular.Body1.Secondary"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginLeft="8dp"
+                    android:ellipsize="end"
+                    android:maxLines="1"
+                    android:textIsSelectable="false"
+                    app:layout_constraintBaseline_toBaselineOf="@+id/manga_artist_label"
+                    app:layout_constraintLeft_toRightOf="@+id/manga_artist_label"
+                    app:layout_constraintRight_toRightOf="parent"/>
 
+                <TextView
+                    android:id="@+id/manga_chapters_label"
+                    style="@style/TextAppearance.Medium.Body2"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/manga_info_chapters_label"
+                    android:textIsSelectable="false"
+                    app:layout_constraintTop_toBottomOf="@+id/manga_artist_label"
+                    app:layout_constraintLeft_toLeftOf="parent"/>
 
-                        <android.support.v4.widget.NestedScrollView
-                            android:layout_width="match_parent"
-                            android:layout_height="match_parent">
+                <TextView
+                    android:id="@+id/manga_chapters"
+                    style="@style/TextAppearance.Regular.Body1.Secondary"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginLeft="8dp"
+                    android:ellipsize="end"
+                    android:maxLines="1"
+                    android:textIsSelectable="false"
+                    app:layout_constraintBaseline_toBaselineOf="@+id/manga_chapters_label"
+                    app:layout_constraintLeft_toRightOf="@+id/manga_chapters_label"
+                    app:layout_constraintRight_toRightOf="parent"/>
 
-                            <RelativeLayout
-                                android:layout_width="match_parent"
-                                android:layout_height="match_parent">
+                <TextView
+                    android:id="@+id/manga_status_label"
+                    style="@style/TextAppearance.Medium.Body2"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/manga_info_status_label"
+                    android:textIsSelectable="false"
+                    app:layout_constraintTop_toBottomOf="@+id/manga_chapters_label"
+                    app:layout_constraintLeft_toLeftOf="parent"/>
 
-                                <LinearLayout
-                                    android:id="@+id/manga_author_view"
-                                    android:layout_width="match_parent"
-                                    android:layout_height="wrap_content"
-                                    android:orientation="horizontal">
+                <TextView
+                    android:id="@+id/manga_status"
+                    style="@style/TextAppearance.Regular.Body1.Secondary"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginLeft="8dp"
+                    android:ellipsize="end"
+                    android:maxLines="1"
+                    android:textIsSelectable="false"
+                    app:layout_constraintBaseline_toBaselineOf="@+id/manga_status_label"
+                    app:layout_constraintLeft_toRightOf="@+id/manga_status_label"
+                    app:layout_constraintRight_toRightOf="parent"/>
 
-                                    <TextView
-                                        android:id="@+id/manga_author_label"
-                                        style="@style/TextAppearance.Medium.Body2"
-                                        android:layout_width="wrap_content"
-                                        android:layout_height="wrap_content"
-                                        android:ellipsize="end"
-                                        android:paddingRight="10dp"
-                                        android:singleLine="true"
-                                        android:text="@string/manga_info_author_label"
-                                        android:textIsSelectable="false"
-                                        />
+                <TextView
+                    android:id="@+id/manga_source_label"
+                    style="@style/TextAppearance.Medium.Body2"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/manga_info_source_label"
+                    android:textIsSelectable="false"
+                    app:layout_constraintTop_toBottomOf="@+id/manga_status_label"
+                    app:layout_constraintLeft_toLeftOf="parent"/>
 
-                                    <TextView
-                                        android:id="@+id/manga_author"
-                                        style="@style/TextAppearance.Regular.Body1.Secondary"
-                                        android:layout_width="wrap_content"
-                                        android:layout_height="wrap_content"
-                                        android:ellipsize="end"
-                                        android:singleLine="true"
-                                        android:textIsSelectable="false"
-                                        />
-                                </LinearLayout>
+                <TextView
+                    android:id="@+id/manga_source"
+                    style="@style/TextAppearance.Regular.Body1.Secondary"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginLeft="8dp"
+                    android:ellipsize="end"
+                    android:maxLines="1"
+                    android:textIsSelectable="false"
+                    app:layout_constraintBaseline_toBaselineOf="@+id/manga_source_label"
+                    app:layout_constraintLeft_toRightOf="@+id/manga_source_label"
+                    app:layout_constraintRight_toRightOf="parent"/>
 
-                                <LinearLayout
-                                    android:id="@+id/manga_artist_view"
-                                    android:layout_width="match_parent"
-                                    android:layout_height="wrap_content"
-                                    android:layout_below="@+id/manga_author_view"
-                                    android:orientation="horizontal">
+                <TextView
+                    android:id="@+id/manga_genres_label"
+                    style="@style/TextAppearance.Medium.Body2"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/manga_info_genres_label"
+                    android:textIsSelectable="false"
+                    app:layout_constraintTop_toBottomOf="@+id/manga_source_label"
+                    app:layout_constraintLeft_toLeftOf="parent"/>
 
-                                    <TextView
-                                        android:id="@+id/manga_artist_label"
-                                        style="@style/TextAppearance.Medium.Body2"
-                                        android:layout_width="wrap_content"
-                                        android:layout_height="wrap_content"
-                                        android:ellipsize="end"
-                                        android:paddingRight="10dp"
-                                        android:singleLine="true"
-                                        android:text="@string/manga_info_artist_label"
-                                        android:textIsSelectable="false"
-                                        />
+                <TextView
+                    android:id="@+id/manga_genres"
+                    style="@style/TextAppearance.Regular.Body1.Secondary"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:textIsSelectable="false"
+                    app:layout_constraintTop_toBottomOf="@+id/manga_genres_label"
+                    app:layout_constraintLeft_toLeftOf="parent"
+                    app:layout_constraintRight_toRightOf="parent"/>
 
-                                    <TextView
-                                        android:id="@+id/manga_artist"
-                                        style="@style/TextAppearance.Regular.Body1.Secondary"
-                                        android:layout_width="wrap_content"
-                                        android:layout_height="wrap_content"
-                                        android:ellipsize="end"
-                                        android:singleLine="true"
-                                        android:textIsSelectable="false"
-                                        />
-                                </LinearLayout>
+            </android.support.constraint.ConstraintLayout>
 
-                                <LinearLayout
-                                    android:id="@+id/manga_chapters_view"
-                                    android:layout_width="match_parent"
-                                    android:layout_height="wrap_content"
-                                    android:layout_below="@+id/manga_artist_view"
-                                    android:orientation="horizontal">
+        </android.support.v4.widget.NestedScrollView>
 
-                                    <TextView
-                                        android:id="@+id/manga_chapters_label"
-                                        style="@style/TextAppearance.Medium.Body2"
-                                        android:layout_width="wrap_content"
-                                        android:layout_height="wrap_content"
-                                        android:ellipsize="end"
-                                        android:paddingRight="10dp"
-                                        android:singleLine="true"
-                                        android:text="@string/manga_info_chapters_label"
-                                        android:textIsSelectable="false"
-                                        />
+        <android.support.v4.widget.NestedScrollView
+            android:id="@+id/description_scrollview"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:layout_marginBottom="16dp"
+            android:layout_marginEnd="8dp"
+            android:layout_marginLeft="16dp"
+            android:layout_marginRight="16dp"
+            android:layout_marginStart="8dp"
+            android:layout_marginTop="16dp"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toTopOf="@+id/guideline">
 
-                                    <TextView
-                                        android:id="@+id/manga_chapters"
-                                        style="@style/TextAppearance.Regular.Body1.Secondary"
-                                        android:layout_width="wrap_content"
-                                        android:layout_height="wrap_content"
-                                        android:ellipsize="end"
-                                        android:singleLine="true"
-                                        android:textIsSelectable="false"
-                                        />
-                                </LinearLayout>
-
-                                <LinearLayout
-                                    android:id="@+id/manga_status_view"
-                                    android:layout_width="match_parent"
-                                    android:layout_height="wrap_content"
-                                    android:layout_below="@+id/manga_chapters_view"
-                                    android:orientation="horizontal">
-
-                                    <TextView
-                                        android:id="@+id/manga_status_label"
-                                        style="@style/TextAppearance.Medium.Body2"
-                                        android:layout_width="wrap_content"
-                                        android:layout_height="wrap_content"
-                                        android:ellipsize="end"
-                                        android:paddingRight="10dp"
-                                        android:singleLine="true"
-                                        android:text="@string/manga_info_status_label"
-                                        android:textIsSelectable="false"
-                                        />
-
-                                    <TextView
-                                        android:id="@+id/manga_status"
-                                        style="@style/TextAppearance.Regular.Body1.Secondary"
-                                        android:layout_width="wrap_content"
-                                        android:layout_height="wrap_content"
-                                        android:ellipsize="end"
-                                        android:singleLine="true"
-                                        android:textIsSelectable="false"
-                                        />
-                                </LinearLayout>
-
-                                <LinearLayout
-                                    android:id="@+id/manga_source_view"
-                                    android:layout_width="match_parent"
-                                    android:layout_height="wrap_content"
-                                    android:layout_below="@+id/manga_status_view"
-                                    android:orientation="horizontal">
-
-                                    <TextView
-                                        android:id="@+id/manga_source_label"
-                                        style="@style/TextAppearance.Medium.Body2"
-                                        android:layout_width="wrap_content"
-                                        android:layout_height="wrap_content"
-                                        android:ellipsize="end"
-                                        android:paddingRight="10dp"
-                                        android:singleLine="true"
-                                        android:text="@string/manga_info_source_label"
-                                        android:textIsSelectable="false"
-                                        />
-
-                                    <TextView
-                                        android:id="@+id/manga_source"
-                                        style="@style/TextAppearance.Regular.Body1.Secondary"
-                                        android:layout_width="wrap_content"
-                                        android:layout_height="wrap_content"
-                                        android:ellipsize="end"
-                                        android:singleLine="true"
-                                        android:textIsSelectable="false"
-                                        />
-                                </LinearLayout>
-
-                                <LinearLayout
-                                    android:id="@+id/manga_genres_view"
-                                    android:layout_width="match_parent"
-                                    android:layout_height="wrap_content"
-                                    android:layout_below="@+id/manga_source_view"
-                                    android:orientation="vertical">
-
-                                    <TextView
-                                        android:id="@+id/manga_genres_label"
-                                        style="@style/TextAppearance.Medium.Body2"
-                                        android:layout_width="wrap_content"
-                                        android:layout_height="wrap_content"
-                                        android:ellipsize="end"
-                                        android:paddingRight="10dp"
-                                        android:singleLine="true"
-                                        android:text="@string/manga_info_genres_label"
-                                        android:textIsSelectable="false"
-                                        />
-
-                                    <TextView
-                                        android:id="@+id/manga_genres"
-                                        style="@style/TextAppearance.Regular.Body1.Secondary"
-                                        android:layout_width="wrap_content"
-                                        android:layout_height="wrap_content"
-                                        android:ellipsize="end"
-                                        android:singleLine="false"
-                                        android:textIsSelectable="false"
-                                        />
-                                </LinearLayout>
-                            </RelativeLayout>
-                        </android.support.v4.widget.NestedScrollView>
-                    </RelativeLayout>
-
-                </LinearLayout>
-
-            </RelativeLayout>
-
-            <android.support.v4.widget.NestedScrollView
-                android:id="@+id/bottom_view"
+            <LinearLayout
                 android:layout_width="match_parent"
-                android:layout_height="0dp"
-                android:layout_margin="@dimen/activity_vertical_margin"
-                android:layout_weight="0.6">
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
 
-                <LinearLayout
+                <TextView
+                    android:id="@+id/manga_summary_label"
+                    style="@style/TextAppearance.Medium.Body2"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                    android:orientation="vertical">
+                    android:text="@string/description"
+                    android:textIsSelectable="false"/>
 
-                    <TextView
-                        android:id="@+id/manga_summary_label"
-                        style="@style/TextAppearance.Medium.Body2"
-                        android:layout_width="match_parent"
-                        android:layout_height="wrap_content"
-                        android:ellipsize="end"
-                        android:paddingRight="10dp"
-                        android:singleLine="true"
-                        android:text="@string/description"
-                        android:textIsSelectable="false"/>
+                <TextView
+                    android:id="@+id/manga_summary"
+                    style="@style/TextAppearance.Regular.Body1.Secondary"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:textIsSelectable="false"/>
 
-                    <TextView
-                        android:id="@+id/manga_summary"
-                        style="@style/TextAppearance.Regular.Body1.Secondary"
-                        android:layout_width="match_parent"
-                        android:layout_height="wrap_content"
-                        android:ellipsize="end"
-                        android:singleLine="false"
-                        android:textIsSelectable="false"
-                        />
-                </LinearLayout>
+            </LinearLayout>
 
-            </android.support.v4.widget.NestedScrollView>
+        </android.support.v4.widget.NestedScrollView>
 
+    </android.support.constraint.ConstraintLayout>
 
-        </LinearLayout>
-
-    </android.support.v4.widget.SwipeRefreshLayout>
-
-    <android.support.design.widget.FloatingActionButton
-        android:id="@+id/fab_favorite"
-        style="@style/Theme.Widget.FAB"
-        android:layout_gravity=""
-        app:layout_anchor="@id/top_view"
-        app:layout_anchorGravity="bottom|right|end"
-        app:layout_behavior=""
-        app:srcCompat="@drawable/ic_bookmark_border_white_24dp"/>
-
-</android.support.design.widget.CoordinatorLayout>
+</android.support.v4.widget.SwipeRefreshLayout>

app/src/main/res/layout/navigation_header.xml

@@ -17,6 +17,6 @@
         android:layout_marginLeft="16dp"
         android:layout_marginTop="@dimen/navigation_drawer_header_margin"
         android:scaleType="centerCrop"
-        android:src="@drawable/icon"/>
+        android:src="@drawable/tachiyomi_circle"/>
 
 </FrameLayout>