Require Android 8+

Given that the next stable version of Chrome (120) will require Android 8+, it's
inevitable that the WebView functionality will gradually break. As always, newer
OS versions are recommended for better support with evolving Internet technologies.

According to https://apilevels.com/, Android 8+ still covers 93.7% of Android users.

app/src/main/java/eu/kanade/domain/ui/UiPreferences.kt

@@ -1,6 +1,5 @@
 package eu.kanade.domain.ui
 
-import android.os.Build
 import eu.kanade.domain.ui.model.AppTheme
 import eu.kanade.domain.ui.model.TabletUiMode
 import eu.kanade.domain.ui.model.ThemeMode
@@ -16,10 +15,7 @@ class UiPreferences(
     private val preferenceStore: PreferenceStore,
 ) {
 
-    fun themeMode() = preferenceStore.getEnum(
+    fun themeMode() = preferenceStore.getEnum("pref_theme_mode_key", ThemeMode.SYSTEM)
-        "pref_theme_mode_key",
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { ThemeMode.SYSTEM } else { ThemeMode.LIGHT },
-    )
 
     fun appTheme() = preferenceStore.getEnum(
         "pref_app_theme",

app/src/main/java/eu/kanade/presentation/manga/components/MangaCoverDialog.kt

@@ -2,7 +2,6 @@ package eu.kanade.presentation.manga.components
 
 import android.graphics.Bitmap
 import android.graphics.drawable.BitmapDrawable
-import android.os.Build
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Row
@@ -176,14 +175,9 @@ fun MangaCoverDialog(
                                 // Copy bitmap in case it came from memory cache
                                 // Because SSIV needs to thoroughly read the image
                                 val copy = (drawable as? BitmapDrawable)?.let {
-                                    val config = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-                                        Bitmap.Config.HARDWARE
-                                    } else {
-                                        Bitmap.Config.ARGB_8888
-                                    }
                                     BitmapDrawable(
                                         view.context.resources,
-                                        it.bitmap.copy(config, false),
+                                        it.bitmap.copy(Bitmap.Config.HARDWARE, false),
                                     )
                                 } ?: drawable
                                 view.setImage(copy, ReaderPageImageView.Config(zoomDuration = 500))

app/src/main/java/eu/kanade/presentation/more/settings/screen/SettingsAdvancedScreen.kt

@@ -3,7 +3,6 @@ package eu.kanade.presentation.more.settings.screen
 import android.annotation.SuppressLint
 import android.content.ActivityNotFoundException
 import android.content.Intent
-import android.os.Build
 import android.provider.Settings
 import android.webkit.WebStorage
 import android.webkit.WebView
@@ -81,9 +80,7 @@ object SettingsAdvancedScreen : SearchableSettings {
         val basePreferences = remember { Injekt.get<BasePreferences>() }
         val networkPreferences = remember { Injekt.get<NetworkPreferences>() }
 
-        return buildList {
+        return listOf(
-            addAll(
-                listOf(
             Preference.PreferenceItem.SwitchPreference(
                 pref = basePreferences.acraEnabled(),
                 title = stringResource(R.string.pref_enable_acra),
@@ -112,10 +109,6 @@ object SettingsAdvancedScreen : SearchableSettings {
                 title = stringResource(R.string.pref_debug_info),
                 onClick = { navigator.push(DebugInfoScreen()) },
             ),
-                ),
-            )
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-                add(
             Preference.PreferenceItem.TextPreference(
                 title = stringResource(R.string.pref_manage_notifications),
                 onClick = {
@@ -125,19 +118,13 @@ object SettingsAdvancedScreen : SearchableSettings {
                     context.startActivity(intent)
                 },
             ),
-                )
-            }
-            addAll(
-                listOf(
             getBackgroundActivityGroup(),
             getDataGroup(),
             getNetworkGroup(networkPreferences = networkPreferences),
             getLibraryGroup(),
             getExtensionsGroup(basePreferences = basePreferences),
-                ),
         )
     }
-    }
 
     @Composable
     private fun getBackgroundActivityGroup(): Preference.PreferenceGroup {

app/src/main/java/eu/kanade/presentation/more/settings/screen/SettingsAppearanceScreen.kt

@@ -2,7 +2,6 @@ package eu.kanade.presentation.more.settings.screen
 
 import android.app.Activity
 import android.content.Context
-import android.os.Build
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.compose.runtime.Composable
@@ -81,18 +80,11 @@ object SettingsAppearanceScreen : SearchableSettings {
                 Preference.PreferenceItem.ListPreference(
                     pref = themeModePref,
                     title = stringResource(R.string.pref_theme_mode),
-                    entries = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                    entries = mapOf(
-                        mapOf(
                         ThemeMode.SYSTEM to stringResource(R.string.theme_system),
                         ThemeMode.LIGHT to stringResource(R.string.theme_light),
                         ThemeMode.DARK to stringResource(R.string.theme_dark),
-                        )
+                    ),
-                    } else {
-                        mapOf(
-                            ThemeMode.LIGHT to stringResource(R.string.theme_light),
-                            ThemeMode.DARK to stringResource(R.string.theme_dark),
-                        )
-                    },
                 ),
                 Preference.PreferenceItem.CustomPreference(
                     title = stringResource(R.string.pref_app_theme),

app/src/main/java/eu/kanade/presentation/more/settings/screen/SettingsReaderScreen.kt

@@ -58,7 +58,6 @@ object SettingsReaderScreen : SearchableSettings {
                 pref = readerPref.trueColor(),
                 title = stringResource(R.string.pref_true_color),
                 subtitle = stringResource(R.string.pref_true_color_summary),
-                enabled = Build.VERSION.SDK_INT >= Build.VERSION_CODES.O,
             ),
             Preference.PreferenceItem.SwitchPreference(
                 pref = readerPref.pageTransitions(),

app/src/main/java/eu/kanade/presentation/util/Navigator.kt

@@ -79,6 +79,7 @@ fun ScreenTransition(
         targetState = navigator.lastItem,
         transitionSpec = transition,
         modifier = modifier,
+        label = "ScreenTransition",
     ) { screen ->
         navigator.saveableState("transition", screen) {
             content(screen)

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

@@ -171,8 +171,6 @@ 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
@@ -187,7 +185,6 @@ class App : Application(), DefaultLifecycleObserver, ImageLoaderFactory {
             }
         } catch (e: 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.AVIF, ImageUtil.ImageType.JXL, ImageUtil.ImageType.HEIF -> true
-                ImageUtil.ImageType.HEIF -> Build.VERSION.SDK_INT < Build.VERSION_CODES.O
                 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.R
 import eu.kanade.tachiyomi.data.backup.BackupRestoreJob
@@ -368,12 +367,11 @@ 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
 
-                if (groupId != null && groupId != 0 && groupKey != null && groupKey.isNotEmpty()) {
+            if (groupId != null && groupId != 0 && !groupKey.isNullOrEmpty()) {
                 val notifications = context.notificationManager.activeNotifications.filter {
                     it.groupKey == groupKey
                 }
@@ -383,7 +381,6 @@ class NotificationReceiver : BroadcastReceiver() {
                     return
                 }
             }
-            }
 
             context.cancelNotification(notificationId)
         }

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.R
 import eu.kanade.tachiyomi.extension.model.InstallStep
 import eu.kanade.tachiyomi.util.system.getUriSize
@@ -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) {
+                    val createCommand = "pm install-create --user current -r -i ${service.packageName} -S $size"
-                        "pm install-create --user current -r -i ${service.packageName} -S $size"
-                    } else {
-                        "pm install-create -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/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) {
+    return FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".provider", this)
-        FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".provider", this)
-    } else {
-        this.toUri()
-    }
 }
 
 /**

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_WIFI_AWARE
-        else -> NetworkCapabilities.TRANSPORT_VPN
     }
     return (NetworkCapabilities.TRANSPORT_CELLULAR..maxTransport).any(networkCapabilities::hasTransport)
 }

buildSrc/src/main/kotlin/AndroidConfig.kt

@@ -1,6 +1,6 @@
 object AndroidConfig {
     const val compileSdk = 34
-    const val minSdk = 23
+    const val minSdk = 26
     const val targetSdk = 29
     const val ndk = "22.1.7171670"
 }

core/src/main/java/eu/kanade/tachiyomi/util/system/WebViewClientCompat.kt

@@ -1,7 +1,5 @@
 package eu.kanade.tachiyomi.util.system
 
-import android.annotation.TargetApi
-import android.os.Build
 import android.webkit.WebResourceError
 import android.webkit.WebResourceRequest
 import android.webkit.WebResourceResponse
@@ -28,7 +26,6 @@ abstract class WebViewClientCompat : WebViewClient() {
     ) {
     }
 
-    @TargetApi(Build.VERSION_CODES.N)
     final override fun shouldOverrideUrlLoading(
         view: WebView,
         request: WebResourceRequest,

core/src/main/java/eu/kanade/tachiyomi/util/system/WebViewUtil.kt

@@ -3,7 +3,6 @@ package eu.kanade.tachiyomi.util.system
 import android.annotation.SuppressLint
 import android.content.Context
 import android.content.pm.PackageManager
-import android.os.Build
 import android.webkit.CookieManager
 import android.webkit.WebSettings
 import android.webkit.WebView
@@ -35,15 +34,11 @@ object WebViewUtil {
     }
 
     fun getVersion(context: Context): String {
-        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
         val webView = WebView.getCurrentWebViewPackage() ?: return "how did you get here?"
         val pm = context.packageManager
         val label = webView.applicationInfo.loadLabel(pm)
         val version = webView.versionName
-            "$label $version"
+        return "$label $version"
-        } else {
-            "Unknown"
-        }
     }
 
     fun supportsWebView(context: Context): Boolean {