Make the app Android 8+

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

@@ -169,22 +169,19 @@ class App : Application(), DefaultLifecycleObserver, ImageLoaderFactory {
     }
 
     override fun getPackageName(): String {
-        // This causes freezes in Android 6/7 for some reason
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            try {
-                // Override the value passed as X-Requested-With in WebView requests
-                val stackTrace = Looper.getMainLooper().thread.stackTrace
-                val chromiumElement = stackTrace.find {
-                    it.className.equals(
-                        "org.chromium.base.BuildInfo",
-                        ignoreCase = true,
-                    )
-                }
-                if (chromiumElement?.methodName.equals("getAll", ignoreCase = true)) {
-                    return WebViewUtil.SPOOF_PACKAGE_NAME
-                }
-            } catch (_: Exception) {
+        try {
+            // Override the value passed as X-Requested-With in WebView requests
+            val stackTrace = Looper.getMainLooper().thread.stackTrace
+            val chromiumElement = stackTrace.find {
+                it.className.equals(
+                    "org.chromium.base.BuildInfo",
+                    ignoreCase = true,
+                )
             }
+            if (chromiumElement?.methodName.equals("getAll", ignoreCase = true)) {
+                return WebViewUtil.SPOOF_PACKAGE_NAME
+            }
+        } catch (_: Exception) {
         }
         return super.getPackageName()
     }

app/src/main/java/eu/kanade/tachiyomi/data/coil/TachiyomiImageDecoder.kt

@@ -1,6 +1,5 @@
 package eu.kanade.tachiyomi.data.coil
 
-import android.os.Build
 import androidx.core.graphics.drawable.toDrawable
 import coil.ImageLoader
 import coil.decode.DecodeResult
@@ -48,8 +47,7 @@ class TachiyomiImageDecoder(private val resources: ImageSource, private val opti
                 ImageUtil.findImageType(it)
             }
             return when (type) {
-                ImageUtil.ImageType.AVIF, ImageUtil.ImageType.JXL -> true
-                ImageUtil.ImageType.HEIF -> Build.VERSION.SDK_INT < Build.VERSION_CODES.O
+                ImageUtil.ImageType.AVIF, ImageUtil.ImageType.JXL, ImageUtil.ImageType.HEIF -> true
                 else -> false
             }
         }

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

@@ -5,7 +5,6 @@ import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 import android.net.Uri
-import android.os.Build
 import androidx.core.net.toUri
 import eu.kanade.tachiyomi.data.backup.restore.BackupRestoreJob
 import eu.kanade.tachiyomi.data.download.DownloadManager
@@ -354,20 +353,18 @@ class NotificationReceiver : BroadcastReceiver() {
 
             When programmatically dismissing this notification, the group notification is not automatically dismissed.
              */
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-                val groupKey = context.notificationManager.activeNotifications.find {
-                    it.id == notificationId
-                }?.groupKey
+            val groupKey = context.notificationManager.activeNotifications.find {
+                it.id == notificationId
+            }?.groupKey
 
-                if (groupId != null && groupId != 0 && !groupKey.isNullOrEmpty()) {
-                    val notifications = context.notificationManager.activeNotifications.filter {
-                        it.groupKey == groupKey
-                    }
+            if (groupId != null && groupId != 0 && !groupKey.isNullOrEmpty()) {
+                val notifications = context.notificationManager.activeNotifications.filter {
+                    it.groupKey == groupKey
+                }
 
-                    if (notifications.size == 2) {
-                        context.cancelNotification(groupId)
-                        return
-                    }
+                if (notifications.size == 2) {
+                    context.cancelNotification(groupId)
+                    return
                 }
             }
 

app/src/main/java/eu/kanade/tachiyomi/extension/installer/ShizukuInstaller.kt

@@ -2,7 +2,6 @@ package eu.kanade.tachiyomi.extension.installer
 
 import android.app.Service
 import android.content.pm.PackageManager
-import android.os.Build
 import eu.kanade.tachiyomi.extension.model.InstallStep
 import eu.kanade.tachiyomi.util.system.getUriSize
 import eu.kanade.tachiyomi.util.system.toast
@@ -50,11 +49,7 @@ class ShizukuInstaller(private val service: Service) : Installer(service) {
             try {
                 val size = service.getUriSize(entry.uri) ?: throw IllegalStateException()
                 service.contentResolver.openInputStream(entry.uri)!!.use {
-                    val createCommand = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-                        "pm install-create --user current -r -i ${service.packageName} -S $size"
-                    } else {
-                        "pm install-create -r -i ${service.packageName} -S $size"
-                    }
+                    val createCommand = "pm install-create --user current -r -i ${service.packageName} -S $size"
                     val createResult = exec(createCommand)
                     sessionId = SESSION_ID_REGEX.find(createResult.out)?.value
                         ?: throw RuntimeException("Failed to create install session")

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

@@ -14,11 +14,7 @@ import java.util.zip.ZipFile
  */
 internal class ZipPageLoader(file: File) : PageLoader() {
 
-    private val zip = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-        ZipFile(file, StandardCharsets.ISO_8859_1)
-    } else {
-        ZipFile(file)
-    }
+    private val zip = ZipFile(file, StandardCharsets.ISO_8859_1)
 
     override var isLocal: Boolean = true
 

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

@@ -2,9 +2,7 @@ package eu.kanade.tachiyomi.util.storage
 
 import android.content.Context
 import android.net.Uri
-import android.os.Build
 import androidx.core.content.FileProvider
-import androidx.core.net.toUri
 import eu.kanade.tachiyomi.BuildConfig
 import java.io.File
 
@@ -17,11 +15,7 @@ val Context.cacheImageDir: File
  * @param context context of application
  */
 fun File.getUriCompat(context: Context): Uri {
-    return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-        FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".provider", this)
-    } else {
-        this.toUri()
-    }
+    return FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".provider", this)
 }
 
 /**

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

@@ -170,12 +170,8 @@ fun Context.isInstalledFromFDroid(): Boolean {
 }
 
 fun Context.launchRequestPackageInstallsPermission() {
-    val intent = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-        Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES).apply {
-            data = Uri.parse("package:$packageName")
-        }
-    } else {
-        Intent(Settings.ACTION_SECURITY_SETTINGS)
+    Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES).apply {
+        data = Uri.parse("package:$packageName")
+        startActivity(this)
     }
-    startActivity(intent)
 }

app/src/main/java/eu/kanade/tachiyomi/util/system/NetworkExtensions.kt

@@ -18,8 +18,7 @@ fun Context.isOnline(): Boolean {
     val networkCapabilities = connectivityManager.getNetworkCapabilities(activeNetwork) ?: return false
     val maxTransport = when {
         Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1 -> NetworkCapabilities.TRANSPORT_LOWPAN
-        Build.VERSION.SDK_INT >= Build.VERSION_CODES.O -> NetworkCapabilities.TRANSPORT_WIFI_AWARE
-        else -> NetworkCapabilities.TRANSPORT_VPN
+        else -> NetworkCapabilities.TRANSPORT_WIFI_AWARE
     }
     return (NetworkCapabilities.TRANSPORT_CELLULAR..maxTransport).any(networkCapabilities::hasTransport)
 }

app/src/main/java/eu/kanade/tachiyomi/util/system/NetworkStateTracker.kt

@@ -17,11 +17,7 @@ data class NetworkState(
     val isValidated: Boolean,
     val isWifi: Boolean,
 ) {
-    val isOnline = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-        isConnected && isValidated
-    } else {
-        isConnected
-    }
+    val isOnline = isConnected && isValidated
 }
 
 @Suppress("DEPRECATION")
@@ -34,34 +30,18 @@ fun Context.activeNetworkState(): NetworkState {
     )
 }
 
-@Suppress("DEPRECATION")
 fun Context.networkStateFlow() = callbackFlow {
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-        val networkCallback = object : NetworkCallback() {
-            override fun onCapabilitiesChanged(network: Network, networkCapabilities: NetworkCapabilities) {
-                trySend(activeNetworkState())
-            }
-            override fun onLost(network: Network) {
-                trySend(activeNetworkState())
-            }
+    val networkCallback = object : NetworkCallback() {
+        override fun onCapabilitiesChanged(network: Network, networkCapabilities: NetworkCapabilities) {
+            trySend(activeNetworkState())
         }
-
-        connectivityManager.registerDefaultNetworkCallback(networkCallback)
-        awaitClose {
-            connectivityManager.unregisterNetworkCallback(networkCallback)
-        }
-    } else {
-        val receiver = object : BroadcastReceiver() {
-            override fun onReceive(context: Context, intent: Intent) {
-                if (intent.action == ConnectivityManager.CONNECTIVITY_ACTION) {
-                    trySend(activeNetworkState())
-                }
-            }
-        }
-
-        registerReceiver(receiver, IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION))
-        awaitClose {
-            unregisterReceiver(receiver)
+        override fun onLost(network: Network) {
+            trySend(activeNetworkState())
         }
     }
+
+    connectivityManager.registerDefaultNetworkCallback(networkCallback)
+    awaitClose {
+        connectivityManager.unregisterNetworkCallback(networkCallback)
+    }
 }