Cleanup and moving biometrics stuff + added secure sceen option

Search activity no longer asks for biometrics, but will ask for it to perform certain tasks

Co-Authored-By: arkon <arkon@users.noreply.github.com>

app/src/main/AndroidManifest.xml

@@ -62,7 +62,7 @@
             android:name=".ui.webview.WebViewActivity"
             android:configChanges="uiMode|orientation|screenSize"/>
         <activity
-            android:name=".ui.main.BiometricActivity" />
+            android:name=".ui.security.BiometricActivity" />
         <activity
             android:name=".widget.CustomLayoutPickerActivity"
             android:label="@string/app_name"

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

@@ -16,7 +16,7 @@ import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.data.preference.getOrDefault
 import eu.kanade.tachiyomi.data.updater.UpdaterJob
 import eu.kanade.tachiyomi.extension.ExtensionUpdateJob
-import eu.kanade.tachiyomi.ui.main.MainActivity
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.util.system.LocaleHelper
 import org.acra.ACRA
 import org.acra.annotation.ReportsCrashes
@@ -55,7 +55,7 @@ open class App : Application(), LifecycleObserver {
         //App in background
         val preferences: PreferencesHelper by injectLazy()
         if (preferences.lockAfter().getOrDefault() >= 0) {
-            MainActivity.unlocked = false
+            SecureActivityDelegate.locked = true
         }
     }
 

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

@@ -131,6 +131,8 @@ object PreferenceKeys {
 
     const val lastUnlock = "last_unlock"
 
+    const val secureScreen = "secure_screen"
+
     const val removeArticles = "remove_articles"
 
     const val skipPreMigration = "skip_pre_migration"

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

@@ -215,6 +215,8 @@ class PreferencesHelper(val context: Context) {
 
     fun lastUnlock() = rxPrefs.getLong(Keys.lastUnlock, 0)
 
+    fun secureScreen() = rxPrefs.getBoolean(Keys.secureScreen, false)
+
     fun removeArticles() = rxPrefs.getBoolean(Keys.removeArticles, false)
 
     fun migrateFlags() = rxPrefs.getInteger("migrate_flags", Int.MAX_VALUE)

app/src/main/java/eu/kanade/tachiyomi/ui/base/activity/BaseActivity.kt

@@ -5,6 +5,9 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.app.AppCompatDelegate
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.ui.main.SearchActivity
+import eu.kanade.tachiyomi.ui.security.BiometricActivity
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.util.system.LocaleHelper
 import uy.kohesive.injekt.injectLazy
 
@@ -32,6 +35,12 @@ abstract class BaseActivity : AppCompatActivity() {
             else -> R.style.Theme_Tachiyomi
         })
         super.onCreate(savedInstanceState)
+        SecureActivityDelegate.setSecure(this)
     }
 
+    override fun onResume() {
+        super.onResume()
+        if (this !is BiometricActivity && this !is SearchActivity)
+            SecureActivityDelegate.promptLockIfNeeded(this)
+    }
 }

app/src/main/java/eu/kanade/tachiyomi/ui/base/activity/BaseRxActivity.kt

@@ -1,6 +1,8 @@
 package eu.kanade.tachiyomi.ui.base.activity
 
+import android.os.Bundle
 import eu.kanade.tachiyomi.ui.base.presenter.BasePresenter
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.util.system.LocaleHelper
 import nucleus.view.NucleusAppCompatActivity
 
@@ -11,4 +13,14 @@ abstract class BaseRxActivity<P : BasePresenter<*>> : NucleusAppCompatActivity<P
         LocaleHelper.updateConfiguration(this)
     }
 
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        SecureActivityDelegate.setSecure(this)
+    }
+
+    override fun onResume() {
+        super.onResume()
+        SecureActivityDelegate.promptLockIfNeeded(this)
+    }
+
 }

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

@@ -16,7 +16,6 @@ import android.webkit.WebView
 import android.widget.FrameLayout
 import androidx.appcompat.content.res.AppCompatResources
 import androidx.appcompat.graphics.drawable.DrawerArrowDrawable
-import androidx.biometric.BiometricManager
 import androidx.core.view.GravityCompat
 import com.afollestad.materialdialogs.MaterialDialog
 import com.bluelinelabs.conductor.Conductor
@@ -53,6 +52,7 @@ import eu.kanade.tachiyomi.ui.manga.MangaController
 import eu.kanade.tachiyomi.ui.migration.manga.process.MigrationListController
 import eu.kanade.tachiyomi.ui.recent_updates.RecentChaptersController
 import eu.kanade.tachiyomi.ui.recently_read.RecentlyReadController
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.ui.setting.SettingsMainController
 import eu.kanade.tachiyomi.util.system.getResourceColor
 import eu.kanade.tachiyomi.util.system.launchUI
@@ -353,22 +353,10 @@ open class MainActivity : BaseActivity(), DownloadServiceListener {
 
     override fun onResume() {
         super.onResume()
-        // setting in case someone comes from the search activity
+        // setting in case someone comes from the search activity to main
         usingBottomNav = true
         getExtensionUpdates()
         DownloadService.callListeners()
-        val useBiometrics = preferences.useBiometrics().getOrDefault()
-        if (useBiometrics && BiometricManager.from(this)
-                .canAuthenticate() == BiometricManager.BIOMETRIC_SUCCESS) {
-            if (!unlocked && (preferences.lockAfter().getOrDefault() <= 0 || Date().time >=
-                    preferences.lastUnlock().getOrDefault() + 60 * 1000 * preferences.lockAfter().getOrDefault())) {
-                val intent = Intent(this, BiometricActivity::class.java)
-                startActivity(intent)
-                this.overridePendingTransition(0, 0)
-            }
-        }
-        else if (useBiometrics)
-            preferences.useBiometrics().set(false)
     }
 
     private fun getExtensionUpdates() {
@@ -480,7 +468,7 @@ open class MainActivity : BaseActivity(), DownloadServiceListener {
             val baseController = router.backstack.last().controller() as? BaseController
             if (if (router.backstackSize == 1) !(baseController?.handleRootBack() ?: false)
                 else !router.handleBack()) {
-                unlocked = false
+                SecureActivityDelegate.locked = true
                 super.onBackPressed()
             }
         }
@@ -593,8 +581,6 @@ open class MainActivity : BaseActivity(), DownloadServiceListener {
 
         private const val URL_HELP = "https://tachiyomi.org/help/"
 
-        var unlocked = false
-
         var usingBottomNav = true
             internal set
     }

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

@@ -22,6 +22,7 @@ import eu.kanade.tachiyomi.ui.base.controller.NoToolbarElevationController
 import eu.kanade.tachiyomi.ui.base.controller.TabbedController
 import eu.kanade.tachiyomi.ui.base.controller.withFadeTransaction
 import eu.kanade.tachiyomi.ui.catalogue.global_search.CatalogueSearchController
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.util.system.getResourceColor
 import eu.kanade.tachiyomi.util.view.updateLayoutParams
 import eu.kanade.tachiyomi.util.view.updatePadding
@@ -148,7 +149,7 @@ class SearchActivity: MainActivity() {
 
     override fun onBackPressed() {
         if (router.backstack.size <= 1 || !router.handleBack()) {
-            unlocked = false
+            SecureActivityDelegate.locked = true
             super.onBackPressed()
         }
     }

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

@@ -1,6 +1,7 @@
 package eu.kanade.tachiyomi.ui.manga
 
 import android.Manifest.permission.WRITE_EXTERNAL_STORAGE
+import android.app.Activity
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
@@ -29,10 +30,11 @@ import eu.kanade.tachiyomi.ui.main.SearchActivity
 import eu.kanade.tachiyomi.ui.manga.chapter.ChaptersController
 import eu.kanade.tachiyomi.ui.manga.info.MangaInfoController
 import eu.kanade.tachiyomi.ui.manga.track.TrackController
-import kotlinx.android.synthetic.main.search_activity.sTabs
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.util.system.toast
-import kotlinx.android.synthetic.main.main_activity.tabs
+import kotlinx.android.synthetic.main.main_activity.*
-import kotlinx.android.synthetic.main.manga_controller.manga_pager
+import kotlinx.android.synthetic.main.manga_controller.*
+import kotlinx.android.synthetic.main.search_activity.*
 import rx.Subscription
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
@@ -98,6 +100,8 @@ class MangaController : RxController, TabbedController {
 
     var startingChapterYPos:Float? = null
 
+    var isLockedFromSearch = false
+
     private var adapter: MangaDetailAdapter? = null
 
     val fromCatalogue = args.getBoolean(FROM_CATALOGUE_EXTRA, false)
@@ -131,6 +135,9 @@ class MangaController : RxController, TabbedController {
         manga_pager.offscreenPageLimit = 3
         manga_pager.adapter = adapter
 
+        isLockedFromSearch = activity is SearchActivity &&
+            SecureActivityDelegate.shouldBeLocked()
+
         if (!fromCatalogue)
             manga_pager.currentItem = CHAPTERS_CONTROLLER
     }
@@ -140,6 +147,12 @@ class MangaController : RxController, TabbedController {
         adapter = null
     }
 
+    override fun onActivityResumed(activity: Activity) {
+        super.onActivityResumed(activity)
+        isLockedFromSearch = activity is SearchActivity &&
+            SecureActivityDelegate.shouldBeLocked()
+    }
+
     override fun onChangeStarted(handler: ControllerChangeHandler, type: ControllerChangeType) {
         super.onChangeStarted(handler, type)
         if (type.isEnter) {

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

@@ -8,9 +8,11 @@ import eu.kanade.tachiyomi.data.download.model.Download
 import eu.kanade.tachiyomi.ui.base.holder.BaseFlexibleViewHolder
 import eu.kanade.tachiyomi.util.system.getResourceColor
 import eu.kanade.tachiyomi.util.view.gone
+import eu.kanade.tachiyomi.util.view.invisible
 import eu.kanade.tachiyomi.util.view.setVectorCompat
+import eu.kanade.tachiyomi.util.view.visible
 import kotlinx.android.synthetic.main.chapters_item.*
-import java.util.*
+import java.util.Date
 
 class ChapterHolder(
         private val view: View,
@@ -26,7 +28,7 @@ class ChapterHolder(
 
     fun bind(item: ChapterItem, manga: Manga) {
         val chapter = item.chapter
-
+        val isLocked = item.isLocked
         chapter_title.text = when (manga.displayMode) {
             Manga.DISPLAY_NUMBER -> {
                 val number = adapter.decimalFormat.format(chapter.chapter_number.toDouble())
@@ -35,12 +37,16 @@ class ChapterHolder(
             else -> chapter.name
         }
 
+        chapter_menu.visible()
         // Set the correct drawable for dropdown and update the tint to match theme.
         chapter_menu.setVectorCompat(R.drawable.ic_more_vert_black_24dp, view.context.getResourceColor(R.attr.icon_color))
 
+        if (isLocked) chapter_menu.invisible()
+
         // Set correct text color
-        chapter_title.setTextColor(if (chapter.read) adapter.readColor else adapter.unreadColor)
+        chapter_title.setTextColor(if (chapter.read && !isLocked)
-        if (chapter.bookmark) chapter_title.setTextColor(adapter.bookmarkedColor)
+            adapter.readColor else adapter.unreadColor)
+        if (chapter.bookmark && !isLocked) chapter_title.setTextColor(adapter.bookmarkedColor)
 
         if (chapter.date_upload > 0) {
             chapter_date.text = adapter.dateFormat.format(Date(chapter.date_upload))
@@ -59,7 +65,7 @@ class ChapterHolder(
             chapter_title.maxLines = 1
         }
 
-        chapter_pages.text = if (!chapter.read && chapter.last_page_read > 0) {
+        chapter_pages.text = if (!chapter.read && chapter.last_page_read > 0 && !isLocked) {
             itemView.context.getString(R.string.chapter_progress, chapter.last_page_read + 1)
         } else {
             ""
@@ -81,6 +87,10 @@ class ChapterHolder(
     private fun showPopupMenu(view: View) {
         val item = adapter.getItem(adapterPosition) ?: return
 
+        if (item.isLocked) {
+            adapter.unlock()
+            return
+        }
         // Create a PopupMenu, giving it the clicked view for an anchor
         val popup = PopupMenu(view.context, view)
 

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

@@ -14,6 +14,7 @@ class ChapterItem(val chapter: Chapter, val manga: Manga) : AbstractFlexibleItem
         Chapter by chapter {
 
     private var _status: Int = 0
+    var isLocked = false
 
     var status: Int
         get() = download?.status ?: _status

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

@@ -2,18 +2,20 @@ package eu.kanade.tachiyomi.ui.manga.chapter
 
 import android.content.Context
 import android.view.MenuItem
+import androidx.fragment.app.FragmentActivity
 import eu.davidea.flexibleadapter.FlexibleAdapter
 import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.preference.getOrDefault
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.util.system.getResourceColor
+import uy.kohesive.injekt.injectLazy
 import java.text.DateFormat
 import java.text.DecimalFormat
 import java.text.DecimalFormatSymbols
-import eu.kanade.tachiyomi.data.preference.PreferencesHelper
-import eu.kanade.tachiyomi.data.preference.getOrDefault
-import uy.kohesive.injekt.injectLazy
 
 class ChaptersAdapter(
-        controller: ChaptersController,
+        val controller: ChaptersController,
         context: Context
 ) : FlexibleAdapter<ChapterItem>(null, controller, true) {
 
@@ -43,8 +45,12 @@ class ChaptersAdapter(
         return items.indexOf(item)
     }
 
+    fun unlock() {
+        val activity = controller.activity as? FragmentActivity ?: return
+        SecureActivityDelegate.promptLockIfNeeded(activity)
+    }
+
     interface OnMenuItemClickListener {
         fun onMenuItemClick(position: Int, item: MenuItem)
     }
-
 }

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

@@ -25,12 +25,12 @@ 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.data.preference.getOrDefault
 import eu.kanade.tachiyomi.ui.base.controller.NucleusController
 import eu.kanade.tachiyomi.ui.main.MainActivity
 import eu.kanade.tachiyomi.ui.main.SearchActivity
 import eu.kanade.tachiyomi.ui.manga.MangaController
 import eu.kanade.tachiyomi.ui.reader.ReaderActivity
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.util.system.toast
 import eu.kanade.tachiyomi.util.view.doOnApplyWindowInsets
 import eu.kanade.tachiyomi.util.view.getCoordinates
@@ -95,6 +95,7 @@ class ChaptersController() : NucleusController<ChaptersPresenter>(),
 
         // Init RecyclerView and adapter
         adapter = ChaptersAdapter(this, view.context)
+        setReadingDrawable()
 
         recycler.adapter = adapter
         recycler.layoutManager = LinearLayoutManager(view.context)
@@ -117,6 +118,10 @@ class ChaptersController() : NucleusController<ChaptersPresenter>(),
         swipe_refresh.refreshes().subscribeUntilDestroy { fetchChaptersFromSource() }
 
         fab.clicks().subscribeUntilDestroy {
+            if (activity is SearchActivity && presenter.isLockedFromSearch) {
+                SecureActivityDelegate.promptLockIfNeeded(activity)
+                return@subscribeUntilDestroy
+            }
             val item = presenter.getNextUnreadChapter()
             if (item != null) {
                 // Create animation listener
@@ -149,9 +154,29 @@ class ChaptersController() : NucleusController<ChaptersPresenter>(),
         actionMode = null
         super.onDestroyView(view)
     }
+    /**
+     * Update FAB with correct drawable.
+     *
+     * @param isFavorite determines if manga is favorite or not.
+     */
+    private fun setReadingDrawable() {
+        // Set the Favorite drawable to the correct one.
+        // Border drawable if false, filled drawable if true.
+        fab.setImageResource(
+            when {
+                (parentController as MangaController).isLockedFromSearch -> R.drawable.ic_lock_white_24dp
+                else -> R.drawable.ic_play_arrow_white_24dp
+            }
+        )
+    }
 
     override fun onActivityResumed(activity: Activity) {
+        super.onActivityResumed(activity)
         if (view == null) return
+        if (activity is SearchActivity) {
+            presenter.updateLockStatus()
+            setReadingDrawable()
+        }
 
         // Check if animation view is visible
         if (reveal_view.visibility == View.VISIBLE) {
@@ -159,10 +184,10 @@ class ChaptersController() : NucleusController<ChaptersPresenter>(),
             val coordinates = fab.getCoordinates()
             reveal_view.hideRevealEffect(coordinates.x, coordinates.y, 1920)
         }
-        super.onActivityResumed(activity)
     }
 
     override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
+        if (!(parentController as MangaController).isLockedFromSearch)
             inflater.inflate(R.menu.chapters, menu)
     }
 

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

@@ -12,6 +12,7 @@ import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.source.LocalSource
 import eu.kanade.tachiyomi.source.Source
 import eu.kanade.tachiyomi.ui.base.presenter.BasePresenter
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.util.chapter.syncChaptersWithSource
 import eu.kanade.tachiyomi.util.lang.isNullOrUnsubscribed
 import rx.Observable
@@ -65,14 +66,28 @@ class ChaptersPresenter(
      */
     private var observeDownloadsSubscription: Subscription? = null
 
+    var isLockedFromSearch = false
+
+    fun updateLockStatus() {
+        val lastCheck = isLockedFromSearch
+        isLockedFromSearch = SecureActivityDelegate.shouldBeLocked()
+        if (lastCheck && lastCheck != isLockedFromSearch) {
+            chapters.forEach {
+                it.isLocked = false
+            }
+            chaptersRelay.call(chapters)
+        }
+    }
+
     override fun onCreate(savedState: Bundle?) {
         super.onCreate(savedState)
+        isLockedFromSearch = SecureActivityDelegate.shouldBeLocked()
 
         // Prepare the relay.
         chaptersRelay.flatMap { applyChapterFilters(it) }
                 .observeOn(AndroidSchedulers.mainThread())
-                .subscribeLatestCache(ChaptersController::onNextChapters,
+                .subscribeLatestCache(ChaptersController::onNextChapters
-                        { _, 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.
@@ -120,6 +135,7 @@ class ChaptersPresenter(
     private fun Chapter.toModel(): ChapterItem {
         // Create the model object.
         val model = ChapterItem(this, manga)
+        model.isLocked = isLockedFromSearch
 
         // Find an active download for this chapter.
         val download = downloadManager.queue.find { it.chapter.id == id }

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

@@ -4,6 +4,7 @@ import android.animation.Animator
 import android.animation.AnimatorListenerAdapter
 import android.animation.AnimatorSet
 import android.animation.ObjectAnimator
+import android.app.Activity
 import android.app.Dialog
 import android.app.PendingIntent
 import android.content.ClipData
@@ -61,26 +62,19 @@ import eu.kanade.tachiyomi.ui.catalogue.global_search.CatalogueSearchController
 import eu.kanade.tachiyomi.ui.library.ChangeMangaCategoriesDialog
 import eu.kanade.tachiyomi.ui.library.LibraryController
 import eu.kanade.tachiyomi.ui.main.MainActivity
-import eu.kanade.tachiyomi.ui.main.SearchActivity
 import eu.kanade.tachiyomi.ui.manga.MangaController
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.ui.webview.WebViewActivity
-import eu.kanade.tachiyomi.util.view.doOnApplyWindowInsets
 import eu.kanade.tachiyomi.util.storage.getUriCompat
+import eu.kanade.tachiyomi.util.system.toast
+import eu.kanade.tachiyomi.util.view.doOnApplyWindowInsets
 import eu.kanade.tachiyomi.util.view.marginBottom
 import eu.kanade.tachiyomi.util.view.snack
-import eu.kanade.tachiyomi.util.system.toast
 import eu.kanade.tachiyomi.util.view.updateLayoutParams
 import eu.kanade.tachiyomi.util.view.updatePaddingRelative
 import jp.wasabeef.glide.transformations.CropSquareTransformation
 import jp.wasabeef.glide.transformations.MaskTransformation
-import kotlinx.android.synthetic.main.edit_manga_dialog.*
 import kotlinx.android.synthetic.main.manga_info_controller.*
-import kotlinx.android.synthetic.main.manga_info_controller.manga_artist
-import kotlinx.android.synthetic.main.manga_info_controller.manga_author
-import kotlinx.android.synthetic.main.manga_info_controller.manga_cover
-import kotlinx.android.synthetic.main.manga_info_controller.manga_genres_tags
-import uy.kohesive.injekt.Injekt
-import uy.kohesive.injekt.api.get
 import uy.kohesive.injekt.injectLazy
 import java.io.File
 import java.text.DateFormat
@@ -238,7 +232,8 @@ class MangaInfoController : NucleusController<MangaInfoPresenter>(),
         inflater.inflate(R.menu.manga_info, menu)
 
         val editItem = menu.findItem(R.id.action_edit)
-        editItem.isVisible = presenter.manga.favorite
+        editItem.isVisible = presenter.manga.favorite &&
+            !(parentController as MangaController).isLockedFromSearch
     }
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
@@ -365,6 +360,11 @@ class MangaInfoController : NucleusController<MangaInfoPresenter>(),
         }
     }
 
+    override fun onActivityResumed(activity: Activity) {
+        super.onActivityResumed(activity)
+        setFavoriteDrawable(presenter.manga.favorite)
+    }
+
     override fun onDestroyView(view: View) {
         manga_genres_tags.setOnTagClickListener(null)
         snack?.dismiss()
@@ -466,10 +466,13 @@ class MangaInfoController : NucleusController<MangaInfoPresenter>(),
     private fun setFavoriteDrawable(isFavorite: Boolean) {
         // Set the Favorite drawable to the correct one.
         // Border drawable if false, filled drawable if true.
-        fab_favorite?.setImageResource(if (isFavorite)
+        fab_favorite?.setImageResource(
-            R.drawable.ic_bookmark_white_24dp
+            when {
-        else
+                (parentController as MangaController).isLockedFromSearch -> R.drawable.ic_lock_white_24dp
-            R.drawable.ic_add_to_library_24dp)
+                isFavorite -> R.drawable.ic_bookmark_white_24dp
+                else -> R.drawable.ic_add_to_library_24dp
+            }
+        )
     }
 
     /**
@@ -510,6 +513,10 @@ class MangaInfoController : NucleusController<MangaInfoPresenter>(),
      * Called when the fab is clicked.
      */
     private fun onFabClick() {
+        if ((parentController as MangaController).isLockedFromSearch) {
+            SecureActivityDelegate.promptLockIfNeeded(activity)
+            return
+        }
         val manga = presenter.manga
         toggleFavorite()
         if (manga.favorite) {
@@ -689,6 +696,8 @@ class MangaInfoController : NucleusController<MangaInfoPresenter>(),
      * @param query the search query to pass to the search controller
      */
     private fun performGlobalSearch(query: String) {
+        if ((parentController as MangaController).isLockedFromSearch)
+            return
         val router = parentController?.router ?: return
         router.pushController(CatalogueSearchController(query).withFadeTransaction())
     }

app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/TrackController.kt

@@ -1,5 +1,6 @@
 package eu.kanade.tachiyomi.ui.manga.track
 
+import android.app.Activity
 import android.content.Intent
 import android.net.Uri
 import android.view.LayoutInflater
@@ -11,8 +12,12 @@ import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.track.model.TrackSearch
 import eu.kanade.tachiyomi.ui.base.controller.NucleusController
 import eu.kanade.tachiyomi.ui.manga.MangaController
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.util.system.toast
 import eu.kanade.tachiyomi.util.view.RecyclerWindowInsetsListener
+import eu.kanade.tachiyomi.util.view.gone
+import eu.kanade.tachiyomi.util.view.invisible
+import eu.kanade.tachiyomi.util.view.visible
 import kotlinx.android.synthetic.main.track_controller.*
 import timber.log.Timber
 
@@ -41,14 +46,32 @@ class TrackController : NucleusController<TrackPresenter>(),
     override fun onViewCreated(view: View) {
         super.onViewCreated(view)
 
+        if ((parentController as MangaController).isLockedFromSearch) {
+            swipe_refresh.invisible()
+            unlock_button.visible()
+            unlock_button.setOnClickListener {
+                SecureActivityDelegate.promptLockIfNeeded(activity)
+            }
+        }
+
         adapter = TrackAdapter(this)
-        with(view) {
+        track_recycler.layoutManager = LinearLayoutManager(view.context)
-            track_recycler.layoutManager = LinearLayoutManager(context)
         track_recycler.adapter = adapter
         track_recycler.setOnApplyWindowInsetsListener(RecyclerWindowInsetsListener)
         swipe_refresh.isEnabled = false
         swipe_refresh.refreshes().subscribeUntilDestroy { presenter.refresh() }
     }
+
+    private fun showTracking() {
+        swipe_refresh.visible()
+        unlock_button.gone()
+    }
+
+    override fun onActivityResumed(activity: Activity) {
+        super.onActivityResumed(activity)
+        if (!(parentController as MangaController).isLockedFromSearch) {
+            showTracking()
+        }
     }
 
     override fun onDestroyView(view: View) {

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

@@ -21,7 +21,6 @@ import android.view.animation.Animation
 import android.view.animation.AnimationUtils
 import android.widget.SeekBar
 import androidx.appcompat.app.AppCompatDelegate
-import androidx.biometric.BiometricManager
 import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
 import com.google.android.material.bottomsheet.BottomSheetDialog
 import eu.kanade.tachiyomi.R
@@ -32,8 +31,6 @@ import eu.kanade.tachiyomi.data.notification.Notifications
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.data.preference.getOrDefault
 import eu.kanade.tachiyomi.ui.base.activity.BaseRxActivity
-import eu.kanade.tachiyomi.ui.main.BiometricActivity
-import eu.kanade.tachiyomi.ui.main.MainActivity
 import eu.kanade.tachiyomi.ui.reader.ReaderPresenter.SetAsCoverResult.AddToLibraryFirst
 import eu.kanade.tachiyomi.ui.reader.ReaderPresenter.SetAsCoverResult.Error
 import eu.kanade.tachiyomi.ui.reader.ReaderPresenter.SetAsCoverResult.Success
@@ -45,11 +42,12 @@ import eu.kanade.tachiyomi.ui.reader.viewer.pager.L2RPagerViewer
 import eu.kanade.tachiyomi.ui.reader.viewer.pager.R2LPagerViewer
 import eu.kanade.tachiyomi.ui.reader.viewer.pager.VerticalPagerViewer
 import eu.kanade.tachiyomi.ui.reader.viewer.webtoon.WebtoonViewer
-import eu.kanade.tachiyomi.util.system.launchUI
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.util.lang.plusAssign
 import eu.kanade.tachiyomi.util.storage.getUriCompat
 import eu.kanade.tachiyomi.util.system.GLUtil
 import eu.kanade.tachiyomi.util.system.getResourceColor
+import eu.kanade.tachiyomi.util.system.launchUI
 import eu.kanade.tachiyomi.util.system.toast
 import eu.kanade.tachiyomi.util.view.gone
 import eu.kanade.tachiyomi.util.view.visible
@@ -67,7 +65,6 @@ import rx.subscriptions.CompositeSubscription
 import timber.log.Timber
 import uy.kohesive.injekt.injectLazy
 import java.io.File
-import java.util.Date
 import java.util.concurrent.TimeUnit
 import kotlin.math.abs
 
@@ -527,23 +524,6 @@ class ReaderActivity : BaseRxActivity<ReaderPresenter>(),
         presenter.shareImage(page)
     }
 
-    override fun onResume() {
-        super.onResume()
-        val useBiometrics = preferences.useBiometrics().getOrDefault()
-        if (useBiometrics && BiometricManager.from(this)
-                .canAuthenticate() == BiometricManager.BIOMETRIC_SUCCESS) {
-            if (!MainActivity.unlocked && (preferences.lockAfter().getOrDefault() <= 0 || Date()
-                    .time >=
-                    preferences.lastUnlock().getOrDefault() + 60 * 1000 * preferences.lockAfter().getOrDefault())) {
-                val intent = Intent(this, BiometricActivity::class.java)
-                startActivity(intent)
-                this.overridePendingTransition(0, 0)
-            }
-        }
-        else if (useBiometrics)
-            preferences.useBiometrics().set(false)
-    }
-
     /**
      * Called from the presenter when a page is ready to be shared. It shows Android's default
      * sharing tool.

app/src/main/java/eu/kanade/tachiyomi/ui/security/BiometricActivity.kt

@@ -1,16 +1,15 @@
-package eu.kanade.tachiyomi.ui.main
+package eu.kanade.tachiyomi.ui.security
 
 import android.os.Bundle
 import androidx.biometric.BiometricPrompt
 import eu.kanade.tachiyomi.R
-import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.ui.base.activity.BaseActivity
-import uy.kohesive.injekt.injectLazy
 import java.util.Date
+import java.util.concurrent.ExecutorService
 import java.util.concurrent.Executors
 
 class BiometricActivity : BaseActivity() {
-    val executor = Executors.newSingleThreadExecutor()
+    private val executor: ExecutorService = Executors.newSingleThreadExecutor()
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -24,15 +23,10 @@ class BiometricActivity : BaseActivity() {
 
             override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
                 super.onAuthenticationSucceeded(result)
-                MainActivity.unlocked = true
+                SecureActivityDelegate.locked = false
                 preferences.lastUnlock().set(Date().time)
                 finish()
             }
-
-            override fun onAuthenticationFailed() {
-                super.onAuthenticationFailed()
-                //  TODO("Called when a biometric is valid but not recognized.")
-            }
         })
 
         val promptInfo = BiometricPrompt.PromptInfo.Builder()

app/src/main/java/eu/kanade/tachiyomi/ui/security/SecureActivityDelegate.kt

@@ -0,0 +1,57 @@
+package eu.kanade.tachiyomi.ui.security
+
+import android.app.Activity
+import android.content.Intent
+import android.view.WindowManager
+import androidx.biometric.BiometricManager
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.preference.getOrDefault
+import uy.kohesive.injekt.injectLazy
+import java.util.Date
+
+object SecureActivityDelegate {
+
+    private val preferences by injectLazy<PreferencesHelper>()
+
+    var locked: Boolean = true
+
+    fun setSecure(activity: Activity?, force:Boolean? = null) {
+        val enabled = force ?: preferences.secureScreen().getOrDefault()
+        if (enabled) {
+            activity?.window?.setFlags(
+                WindowManager.LayoutParams.FLAG_SECURE,
+                WindowManager.LayoutParams.FLAG_SECURE
+            )
+        } else {
+            activity?.window?.clearFlags(WindowManager.LayoutParams.FLAG_SECURE)
+        }
+    }
+
+    fun promptLockIfNeeded(activity: Activity?) {
+        if (activity == null) return
+        val lockApp = preferences.useBiometrics().getOrDefault()
+        if (lockApp && BiometricManager.from(activity).canAuthenticate() == BiometricManager.BIOMETRIC_SUCCESS) {
+            if (isAppLocked()) {
+                val intent = Intent(activity, BiometricActivity::class.java)
+                activity.startActivity(intent)
+                activity.overridePendingTransition(0, 0)
+            }
+        } else if (lockApp) {
+            preferences.useBiometrics().set(false)
+        }
+    }
+
+    fun shouldBeLocked(): Boolean {
+        val lockApp = preferences.useBiometrics().getOrDefault()
+        if (lockApp && isAppLocked()) return true
+        return false
+    }
+
+    private fun isAppLocked(): Boolean {
+        return locked &&
+            (preferences.lockAfter().getOrDefault() <= 0
+                || Date().time >= preferences.lastUnlock().getOrDefault() + 60 * 1000 * preferences
+                .lockAfter().getOrDefault())
+    }
+
+}

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

@@ -1,17 +1,14 @@
 package eu.kanade.tachiyomi.ui.setting
 
-import androidx.appcompat.app.AppCompatDelegate
 import androidx.biometric.BiometricManager
 import androidx.preference.PreferenceScreen
-import com.afollestad.materialdialogs.MaterialDialog
 import eu.kanade.tachiyomi.BuildConfig
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.preference.getOrDefault
 import eu.kanade.tachiyomi.data.updater.UpdaterJob
-import eu.kanade.tachiyomi.widget.preference.IntListMatPreference
+import eu.kanade.tachiyomi.ui.security.SecureActivityDelegate
 import eu.kanade.tachiyomi.util.system.LocaleHelper
-import eu.kanade.tachiyomi.ui.main.MainActivity
+import eu.kanade.tachiyomi.widget.preference.IntListMatPreference
-import kotlinx.android.synthetic.main.main_activity.*
 import eu.kanade.tachiyomi.data.preference.PreferenceKeys as Keys
 
 class SettingsGeneralController : SettingsController() {
@@ -97,9 +94,12 @@ class SettingsGeneralController : SettingsController() {
             }
         }
 
+        preferenceCategory {
+            titleRes = R.string.pref_category_security
+
             val biometricManager = BiometricManager.from(context)
             if (biometricManager.canAuthenticate() == BiometricManager.BIOMETRIC_SUCCESS) {
-            var preference:IntListMatPreference? = null
+                var preference: IntListMatPreference? = null
                 switchPreference {
                     key = Keys.useBiometrics
                     titleRes = R.string.lock_with_biometrics
@@ -119,13 +119,28 @@ class SettingsGeneralController : SettingsController() {
                         when (it) {
                             0 -> context.getString(R.string.lock_always)
                             -1 -> context.getString(R.string.lock_never)
-                        else -> resources?.getQuantityString(R.plurals.lock_after_mins, it.toInt(),
+                            else -> resources?.getQuantityString(
-                            it)
+                                R.plurals.lock_after_mins, it.toInt(), it
+                            )
                         }
                     }
                     entryValues = values
                     defaultValue = 0
                 }
             }
+
+            switchPreference {
+                key = Keys.secureScreen
+                titleRes = R.string.pref_secure_screen
+                summaryRes = R.string.pref_secure_screen_summary
+                defaultValue = false
+
+                onChange {
+                    it as Boolean
+                    SecureActivityDelegate.setSecure(activity, it)
+                    true
+                }
+            }
+        }
     }
 }

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

@@ -185,7 +185,8 @@ class SettingsLibraryController : SettingsController() {
             intListPreference(activity) {
                 titleRes = R.string.pref_keep_category_sorting
                 key = Keys.keepCatSort
-                summaryRes = R.string.pref_keep_category_sorting_summary
+
+                customSummary = context.getString(R.string.pref_keep_category_sorting_summary)
                 entries = listOf(
                     context.getString(R.string.always_ask),
                     context.getString(R.string.option_keep_category_sort),

app/src/main/java/eu/kanade/tachiyomi/widget/preference/IntListMatPreference.kt

@@ -27,7 +27,8 @@ AttributeSet? =
         defValue = defaultValue as? Int ?: defValue
     }
     override fun getSummary(): CharSequence {
-        if (key == null || useCustomSummary) return super.getSummary()
+        if (customSummary != null) return customSummary!!
+        if (key == null) return super.getSummary()
         val index = entryValues.indexOf(prefs.getInt(key, defValue).getOrDefault())
         return if (entries.isEmpty() || index == -1) ""
         else entries[index]

app/src/main/java/eu/kanade/tachiyomi/widget/preference/ListMatPreference.kt

@@ -3,17 +3,11 @@ package eu.kanade.tachiyomi.widget.preference
 import android.annotation.SuppressLint
 import android.app.Activity
 import android.content.Context
-import android.content.SharedPreferences
 import android.util.AttributeSet
 import androidx.preference.Preference
-import androidx.preference.PreferenceManager
 import com.afollestad.materialdialogs.MaterialDialog
 import com.afollestad.materialdialogs.list.listItemsSingleChoice
-import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.data.preference.getOrDefault
-import eu.kanade.tachiyomi.ui.setting.defaultValue
-import uy.kohesive.injekt.Injekt
-import uy.kohesive.injekt.api.get
 
 open class ListMatPreference @JvmOverloads constructor(activity: Activity?, context: Context,
     attrs: AttributeSet? =
@@ -34,6 +28,7 @@ open class ListMatPreference @JvmOverloads constructor(activity: Activity?, cont
         defValue = defaultValue as? String ?: defValue
     }
     override fun getSummary(): CharSequence {
+        if (customSummary != null) return customSummary!!
         val index = entryValues.indexOf(prefs.getStringPref(key, defValue).getOrDefault())
         return if (entries.isEmpty() || index == -1) ""
         else entries[index]

app/src/main/java/eu/kanade/tachiyomi/widget/preference/MatPreference.kt

@@ -16,19 +16,10 @@ open class MatPreference @JvmOverloads constructor(val activity: Activity?, cont
         null) :
     Preference(context, attrs) {
 
-    protected var useCustomSummary = false
     protected val prefs: PreferencesHelper = Injekt.get()
     private var isShowing = false
+    var customSummary:String? = null
 
-    override fun setSummary(summaryResId: Int) {
-        useCustomSummary = true
-        super.setSummary(summaryResId)
-    }
-
-    override fun setSummary(summary: CharSequence?) {
-        useCustomSummary = true
-        super.setSummary(summary)
-    }
     override fun onClick() {
         if (!isShowing)
             dialog().apply {
@@ -37,6 +28,10 @@ open class MatPreference @JvmOverloads constructor(val activity: Activity?, cont
         isShowing = true
     }
 
+    override fun getSummary(): CharSequence {
+        return customSummary ?: super.getSummary()
+    }
+
     open fun dialog(): MaterialDialog {
         return MaterialDialog(activity ?: context).apply {
             if (title != null)

app/src/main/java/eu/kanade/tachiyomi/widget/preference/MultiListMatPreference.kt

@@ -20,10 +20,15 @@ class MultiListMatPreference @JvmOverloads constructor(activity: Activity?, cont
     var customSummaryRes:Int
         get() = 0
         set(value) { customSummary = context.getString(value) }
-    var customSummary:String? = null
 
     override fun getSummary(): CharSequence {
-        return customSummary ?: super.getSummary()
+        if (customSummary != null) return customSummary!!
+        return prefs.getStringSet(key, emptySet<String>()).getOrDefault().mapNotNull {
+            if (entryValues.indexOf(it) == -1) null
+            else entryValues.indexOf(it) + if (allSelectionRes != null) 1 else 0
+        }.toIntArray().joinToString(",") {
+            entries[it]
+        }
     }
 
     @SuppressLint("CheckResult")

app/src/main/res/drawable/ic_lock_white_24dp.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24.0" android:viewportWidth="24.0"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FF000000" android:pathData="M18,8h-1L17,6c0,-2.76 -2.24,-5 -5,-5S7,3.24 7,6v2L6,8c-1.1,0 -2,0.9 -2,2v10c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 2,-2L20,10c0,-1.1 -0.9,-2 -2,-2zM12,17c-1.1,0 -2,-0.9 -2,-2s0.9,-2 2,-2 2,0.9 2,2 -0.9,2 -2,2zM15.1,8L8.9,8L8.9,6c0,-1.71 1.39,-3.1 3.1,-3.1 1.71,0 3.1,1.39 3.1,3.1v2z"/>
+</vector>

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

@@ -1,8 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
 
     <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
         android:id="@+id/swipe_refresh"
@@ -20,4 +22,17 @@
 
     </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 
-</LinearLayout>
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/unlock_button"
+        android:layout_width="wrap_content"
+        android:layout_marginTop="30dp"
+        android:layout_gravity="center|top"
+        app:rippleColor="@color/fullRippleColor"
+        android:visibility="gone"
+        tools:visibility="visible"
+        style="@style/Widget.MaterialComponents.Button.TextButton"
+        android:textColor="?android:attr/colorAccent"
+        android:layout_height="wrap_content"
+        android:text="@string/action_unlock_trackers"/>
+
+</FrameLayout>

app/src/main/res/values/strings.xml

@@ -48,6 +48,7 @@
     <string name="hiding_categories">Hiding categories</string>
     <string name="manga_only">Manga only</string>
     <string name="manwha_only">Manwha only</string>
+    <string name="action_unlock_trackers">Unlock to access trackers</string>
 
     <string name="sorting_by_">Sorting by %1$s</string>
     <string name="sort_by_">Sort by: %1$s</string>
@@ -169,6 +170,9 @@
     <string name="pref_date_format">Date format</string>
     <string name="pref_enable_automatic_updates">Check for updates</string>
     <string name="pref_enable_automatic_updates_summary">Automatically check for new app versions</string>
+    <string name="pref_secure_screen">Secure screen</string>
+    <string name="pref_secure_screen_summary">Hide Tachiyomi from the overview screen</string>
+    <string name="pref_category_security">Security</string>
 
       <!-- Library section -->
     <string name="pref_category_library_display">Display</string>