playback: rework audio focus

Rework audio focus to rely on the native ExoPlayer implementation
instead of a custom implementation.

Previously, we avoided ExoPlayer's AudioFocus system as it never
played after a transient lost. A few versions later now through,
now it does, so we may as well switch to it. This does introduce
a bug where ReplayGain functionality will conflict with audio
focus, but I hope to eliminate this with #115 as I switch to
an AudioProcessor instead of a callback.

CHANGELOG.md

@@ -5,10 +5,15 @@
 #### What's Fixed
 - Fixed incorrect ellipsizing on song items
 
+#### What's Changed
+- Audio focus is no longer configurable
+
 #### Dev/Meta
 - Updated translations [Konstantin Tutsch -> German, cccClyde -> Chinese ]
 - Switched to spotless and ktfmt instead of ktlint
 - Migrated constants to centralized table
+- Introduced new RecyclerView framework
+- Use native ExoPlayer AudioFocus implementation
 - Removed databinding [Greatly reduces compile times]
 - A bunch of internal view implementation improvements
 

app/src/main/java/org/oxycblt/auxio/AuxioApp.kt

@@ -28,7 +28,6 @@ import org.oxycblt.auxio.coil.GenreImageFetcher
 import org.oxycblt.auxio.coil.MusicKeyer
 import org.oxycblt.auxio.settings.SettingsManager
 
-/** TODO: Rework null-safety/usage of requireNotNull */
 @Suppress("UNUSED")
 class AuxioApp : Application(), ImageLoaderFactory {
     override fun onCreate() {

app/src/main/java/org/oxycblt/auxio/detail/DetailViewModel.kt

@@ -100,7 +100,7 @@ class DetailViewModel : ViewModel() {
         if (mCurrentAlbum.value?.id == id) return
         val musicStore = MusicStore.requireInstance()
         val album =
-            requireNotNull(musicStore.albums.find { it.id == id }) { "Invalid album ID provided " }
+            requireNotNull(musicStore.albums.find { it.id == id }) { "Invalid album id provided " }
 
         mCurrentAlbum.value = album
         refreshAlbumData(album)
@@ -109,9 +109,7 @@ class DetailViewModel : ViewModel() {
     fun setArtistId(id: Long) {
         if (mCurrentArtist.value?.id == id) return
         val musicStore = MusicStore.requireInstance()
-        val artist =
+        val artist = requireNotNull(musicStore.artists.find { it.id == id }) {}
-            requireNotNull(musicStore.artists.find { it.id == id }) { "Invalid artist ID provided" }
-
         mCurrentArtist.value = artist
         refreshArtistData(artist)
     }
@@ -119,8 +117,7 @@ class DetailViewModel : ViewModel() {
     fun setGenreId(id: Long) {
         if (mCurrentGenre.value?.id == id) return
         val musicStore = MusicStore.requireInstance()
-        val genre =
+        val genre = requireNotNull(musicStore.genres.find { it.id == id })
-            requireNotNull(musicStore.genres.find { it.id == id }) { "Invalid genre ID provided" }
         mCurrentGenre.value = genre
         refreshGenreData(genre)
     }

app/src/main/java/org/oxycblt/auxio/detail/recycler/ArtistDetailAdapter.kt

@@ -179,7 +179,8 @@ private constructor(
     override fun bind(item: Album, listener: MenuItemListener) {
         binding.parentImage.bindAlbumCover(item)
         binding.parentName.textSafe = item.resolvedName
-        binding.parentInfo.textSafe = if (item.year != null) {
+        binding.parentInfo.textSafe =
+            if (item.year != null) {
                 binding.context.getString(R.string.fmt_number, item.year)
             } else {
                 binding.context.getString(R.string.def_date)

app/src/main/java/org/oxycblt/auxio/home/tabs/Tab.kt

@@ -49,7 +49,7 @@ sealed class Tab(open val mode: DisplayMode) {
 
     companion object {
         /** The length a well-formed tab sequence should be */
-        const val SEQUENCE_LEN = 4
+        private const val SEQUENCE_LEN = 4
         /** The default tab sequence, represented in integer form */
         const val SEQUENCE_DEFAULT = 0b1000_1001_1010_1011_0100
 

app/src/main/java/org/oxycblt/auxio/playback/system/PlaybackService.kt

@@ -88,7 +88,7 @@ class PlaybackService :
     private lateinit var notificationManager: NotificationManager
 
     // System backend components
-    private lateinit var audioReactor: AudioReactor
+    private lateinit var audioReactor: VolumeReactor
     private lateinit var widgets: WidgetController
     private val systemReceiver = PlaybackReceiver()
 
@@ -130,10 +130,10 @@ class PlaybackService :
                 .setUsage(C.USAGE_MEDIA)
                 .setContentType(C.CONTENT_TYPE_MUSIC)
                 .build(),
-            false)
+            true)
 
         audioReactor =
-            AudioReactor(this) { volume ->
+            VolumeReactor { volume ->
                 logD("Updating player volume to $volume")
                 player.volume = volume
             }
@@ -191,7 +191,6 @@ class PlaybackService :
         player.release()
         connector.release()
         mediaSession.release()
-        audioReactor.release()
         widgets.release()
 
         playbackManager.removeCallback(this)
@@ -214,6 +213,13 @@ class PlaybackService :
 
     // --- PLAYER EVENT LISTENER OVERRIDES ---
 
+    override fun onPlayWhenReadyChanged(playWhenReady: Boolean, reason: Int) {
+        super.onPlayWhenReadyChanged(playWhenReady, reason)
+        if (playbackManager.isPlaying != playWhenReady) {
+            playbackManager.setPlaying(playWhenReady)
+        }
+    }
+
     override fun onPlaybackStateChanged(state: Int) {
         when (state) {
             Player.STATE_READY -> startPolling()
@@ -281,7 +287,6 @@ class PlaybackService :
     override fun onPlayingUpdate(isPlaying: Boolean) {
         if (isPlaying && !player.isPlaying) {
             player.play()
-            audioReactor.requestFocus()
             startPolling()
         } else {
             player.pause()

app/src/main/java/org/oxycblt/auxio/playback/system/VolumeReactor.kt

@@ -17,13 +17,7 @@
  
 package org.oxycblt.auxio.playback.system
 
-import android.content.Context
-import android.media.AudioManager
-import android.os.Build
 import androidx.core.math.MathUtils
-import androidx.media.AudioAttributesCompat
-import androidx.media.AudioFocusRequestCompat
-import androidx.media.AudioManagerCompat
 import com.google.android.exoplayer2.metadata.Metadata
 import com.google.android.exoplayer2.metadata.id3.TextInformationFrame
 import com.google.android.exoplayer2.metadata.vorbis.VorbisComment
@@ -31,36 +25,24 @@ import kotlin.math.pow
 import org.oxycblt.auxio.music.Album
 import org.oxycblt.auxio.playback.state.PlaybackStateManager
 import org.oxycblt.auxio.settings.SettingsManager
-import org.oxycblt.auxio.util.getSystemServiceSafe
 import org.oxycblt.auxio.util.logD
 import org.oxycblt.auxio.util.logW
 import org.oxycblt.auxio.util.unlikelyToBeNull
 
 /**
- * Manages the current volume and playback state across ReplayGain and AudioFocus events.
+ * Manages the current volume across ReplayGain and AudioFocus events.
+ *
+ * TODO: Add ReplayGain pre-amp
+ *
+ * TODO: Add positive ReplayGain
  * @author OxygenCobalt
  */
-class AudioReactor(context: Context, private val callback: (Float) -> Unit) :
+class VolumeReactor(private val callback: (Float) -> Unit) {
-    AudioManager.OnAudioFocusChangeListener, SettingsManager.Callback {
     private data class Gain(val track: Float, val album: Float)
     private data class GainTag(val key: String, val value: Float)
 
     private val playbackManager = PlaybackStateManager.getInstance()
     private val settingsManager = SettingsManager.getInstance()
-    private val audioManager = context.getSystemServiceSafe(AudioManager::class)
-
-    private val request =
-        AudioFocusRequestCompat.Builder(AudioManagerCompat.AUDIOFOCUS_GAIN)
-            .setWillPauseWhenDucked(false)
-            .setAudioAttributes(
-                AudioAttributesCompat.Builder()
-                    .setContentType(AudioAttributesCompat.CONTENT_TYPE_MUSIC)
-                    .setUsage(AudioAttributesCompat.USAGE_MEDIA)
-                    .build())
-            .setOnAudioFocusChangeListener(this)
-            .build()
-
-    private var pauseWasTransient = false
 
     // It's good to keep the volume and the ducking multiplier separate so that we don't
     // lose information
@@ -77,23 +59,9 @@ class AudioReactor(context: Context, private val callback: (Float) -> Unit) :
             callback(volume)
         }
 
-    init {
-        settingsManager.addCallback(this)
-    }
-
-    /** Request the android system for audio focus */
-    fun requestFocus() {
-        logD("Requesting audio focus")
-        AudioManagerCompat.requestAudioFocus(audioManager, request)
-    }
-
     /**
      * Updates the rough volume adjustment for [Metadata] with ReplayGain tags. This is based off
      * Vanilla Music's implementation.
-     *
-     * TODO: Add ReplayGain pre-amp
-     *
-     * TODO: Add positive ReplayGain
      */
     fun applyReplayGain(metadata: Metadata?) {
         if (metadata == null) {
@@ -218,75 +186,9 @@ class AudioReactor(context: Context, private val callback: (Float) -> Unit) :
         }
     }
 
-    /** Abandon the current focus request and any callbacks */
-    fun release() {
-        AudioManagerCompat.abandonAudioFocusRequest(audioManager, request)
-        settingsManager.removeCallback(this)
-    }
-
-    // --- INTERNAL AUDIO FOCUS ---
-
-    override fun onAudioFocusChange(focusChange: Int) {
-        if (!settingsManager.doAudioFocus && Build.VERSION.SDK_INT < Build.VERSION_CODES.S) {
-            // Don't do audio focus if its not enabled
-            return
-        }
-
-        when (focusChange) {
-            AudioManager.AUDIOFOCUS_GAIN -> onGain()
-            AudioManager.AUDIOFOCUS_LOSS -> onLossPermanent()
-            AudioManager.AUDIOFOCUS_LOSS_TRANSIENT -> onLossTransient()
-            AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK -> onDuck()
-        }
-    }
-
-    private fun onGain() {
-        if (multiplier == MULTIPLIER_DUCK) {
-            unduck()
-        } else if (pauseWasTransient) {
-            logD("Gained focus after transient loss")
-
-            // Play again if the pause was only temporary [AudioManager.AUDIOFOCUS_LOSS_TRANSIENT]
-            playbackManager.setPlaying(true)
-            pauseWasTransient = false
-        }
-    }
-
-    private fun onLossTransient() {
-        // Since this loss is only temporary, mark it as such if we had to pause playback.
-        if (playbackManager.isPlaying) {
-            logD("Pausing for transient loss")
-            playbackManager.setPlaying(false)
-            pauseWasTransient = true
-        }
-    }
-
-    private fun onLossPermanent() {
-        logD("Pausing for permanent loss")
-        playbackManager.setPlaying(false)
-    }
-
-    private fun onDuck() {
-        multiplier = MULTIPLIER_DUCK
-        logD("Ducked volume, now $volume")
-    }
-
-    private fun unduck() {
-        multiplier = 1f
-        logD("Unducked volume, now $volume")
-    }
-
     // --- SETTINGS MANAGEMENT ---
 
-    override fun onAudioFocusUpdate(focus: Boolean) {
-        if (!focus) {
-            onGain()
-        }
-    }
-
     companion object {
-        private const val MULTIPLIER_DUCK = 0.2f
-
         const val RG_TRACK = "REPLAYGAIN_TRACK_GAIN"
         const val RG_ALBUM = "REPLAYGAIN_ALBUM_GAIN"
         const val R128_TRACK = "R128_TRACK_GAIN"

app/src/main/java/org/oxycblt/auxio/settings/SettingsManager.kt

@@ -94,10 +94,6 @@ class SettingsManager private constructor(context: Context) :
     val roundCovers: Boolean
         get() = prefs.getBoolean(KEY_ROUND_COVERS, false)
 
-    /** Whether to do Audio focus. */
-    val doAudioFocus: Boolean
-        get() = prefs.getBoolean(KEY_AUDIO_FOCUS, true)
-
     /** Whether to resume playback when a headset is connected (may not work well in all cases) */
     val headsetAutoplay: Boolean
         get() = prefs.getBoolean(KEY_HEADSET_AUTOPLAY, false)
@@ -239,7 +235,6 @@ class SettingsManager private constructor(context: Context) :
             KEY_SHOW_COVERS -> callbacks.forEach { it.onShowCoverUpdate(showCovers) }
             KEY_QUALITY_COVERS -> callbacks.forEach { it.onQualityCoverUpdate(useQualityCovers) }
             KEY_LIB_TABS -> callbacks.forEach { it.onLibTabsUpdate(libTabs) }
-            KEY_AUDIO_FOCUS -> callbacks.forEach { it.onAudioFocusUpdate(doAudioFocus) }
             KEY_REPLAY_GAIN -> callbacks.forEach { it.onReplayGainUpdate(replayGainMode) }
         }
     }
@@ -255,7 +250,6 @@ class SettingsManager private constructor(context: Context) :
         fun onNotifActionUpdate(useAltAction: Boolean) {}
         fun onShowCoverUpdate(showCovers: Boolean) {}
         fun onQualityCoverUpdate(doQualityCovers: Boolean) {}
-        fun onAudioFocusUpdate(focus: Boolean) {}
         fun onReplayGainUpdate(mode: ReplayGainMode) {}
     }
 
@@ -272,7 +266,6 @@ class SettingsManager private constructor(context: Context) :
         const val KEY_ROUND_COVERS = "auxio_round_covers"
         const val KEY_USE_ALT_NOTIFICATION_ACTION = "KEY_ALT_NOTIF_ACTION"
 
-        const val KEY_AUDIO_FOCUS = "KEY_AUDIO_FOCUS"
         const val KEY_HEADSET_AUTOPLAY = "auxio_headset_autoplay"
         const val KEY_REPLAY_GAIN = "auxio_replay_gain"
 

app/src/main/java/org/oxycblt/auxio/util/ViewUtil.kt

@@ -91,7 +91,7 @@ val Drawable.isRtl: Boolean
 val ViewBinding.context: Context
     get() = root.context
 
-var TextView.textSafe
+var TextView.textSafe: CharSequence
     get() = text
     set(value) {
         text = value

app/src/main/java/org/oxycblt/auxio/widgets/WidgetProvider.kt

@@ -68,7 +68,6 @@ class WidgetProvider : AppWidgetProvider() {
         }
 
         loadWidgetBitmap(context, song) { bitmap ->
-            logD(bitmap == null)
             val state =
                 WidgetState(
                     song,

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

@@ -4,7 +4,6 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:background="?attr/colorSurface"
     android:orientation="vertical"
     tools:context=".settings.AboutFragment">
 

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

@@ -5,7 +5,6 @@
     android:id="@+id/queue_coordinator"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="?attr/colorSurface"
     android:orientation="vertical">
 
     <org.oxycblt.auxio.ui.EdgeAppBarLayout

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

@@ -5,7 +5,6 @@
     android:id="@+id/settings_coordinator"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="?attr/colorSurface"
     android:orientation="vertical">
 
     <org.oxycblt.auxio.ui.EdgeAppBarLayout

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

@@ -2,10 +2,8 @@
 <FrameLayout 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"
-
     android:layout_width="match_parent"
-    android:layout_height="wrap_content"
+    android:layout_height="wrap_content">
-    android:background="?attr/colorSurface">
 
     <View
         android:id="@+id/background"

app/src/main/res/values-ar-rIQ/strings.xml

@@ -81,8 +81,6 @@
     <string name="set_alt_shuffle">تفضيل نشاط الخلط</string>
 
     <string name="set_audio">صوتيات</string>
-    <string name="set_focus">تركيز الصوت</string>
-    <string name="set_focus_desc">ايقاف مؤقت عند تشغيل صوت آخر (كالمكالمات)</string>
     <string name="set_replay_gain">صخب الصوت (تجريبي)</string>
     <string name="set_off">اطفاء</string>
     <string name="set_replay_gain_track">تفضيل المقطع</string>

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

@@ -65,8 +65,6 @@
     <string name="set_alt_loop">"Preferovat akci režimu opakování"</string>
     <string name="set_alt_shuffle">"Preferovat akci náhodného přehrávání"</string>
     <string name="set_audio">"Zvuk"</string>
-    <string name="set_focus">"Zaměření zvuku"</string>
-    <string name="set_focus_desc">Pozastavit při přehrávání jiného zvuku (např. hovor)</string>
     <string name="set_behavior">"Chování"</string>
     <string name="set_song_mode">"Když je vybrána skladba"</string>
     <string name="set_keep_shuffle">"Zapamatovat si náhodné přehrávání"</string>

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

@@ -71,8 +71,6 @@
     <string name="set_alt_shuffle">Zufällig-Aktionstaste bevorzugen</string>
 
     <string name="set_audio">Audio</string>
-    <string name="set_focus">Audiofokus</string>
-    <string name="set_focus_desc">Pausieren wenn andere Töne abspielt wird [Bsp. Anrufe]</string>
     <string name="set_headset_autoplay">Kopfhörer automatische Wiedergabe</string>
     <string name="set_headset_autoplay_desc">Beginne die Wiedergabe immer, wenn Kopfhörer verbunden sind (funktioniert nicht auf allen Geräten)</string>
     <string name="set_replay_gain">ReplayGain (Experimentell)</string>

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

@@ -81,8 +81,6 @@
     <string name="set_alt_shuffle">Preferir acción de mezcla</string>
 
     <string name="set_audio">Sonido</string>
-    <string name="set_focus">Enfoque de sonido</string>
-    <string name="set_focus_desc">Pausar cuando se reproduce otro sonido (Ej: llamadas)</string>
     <string name="set_replay_gain">ReplayGain (Experimental)</string>
     <string name="set_off">Desactivado</string>
     <string name="set_replay_gain_track">Por pista</string>

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

@@ -49,7 +49,6 @@
     <string name="set_quality_covers">Ignorer le stockage des pochettes</string>
 
     <string name="set_audio">Audio</string>
-    <string name="set_focus">Audio Focus</string>
 
     <string name="set_behavior">Comportement</string>
 

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

@@ -40,7 +40,6 @@
     <string name="set_accent">एक्सेंट</string>
 
     <string name="set_audio">ऑडियो</string>
-    <string name="set_focus">ऑडियो फोकस</string>
 
     <string name="set_behavior">चाल चलन</string>
 

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

@@ -48,7 +48,6 @@
     <string name="set_quality_covers">A médiatár albumborítók figyelmen kívül hagyása</string>
 
     <string name="set_audio">Hang</string>
-    <string name="set_focus">Hangfókusz</string>
 
     <string name="set_behavior">Működés</string>
 

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

@@ -48,7 +48,6 @@
     <string name="set_quality_covers">Abaikan sampul-sampul pada Media Penyimpanan</string>
 
     <string name="set_audio">Audio</string>
-    <string name="set_focus">Fokus audio</string>
 
     <string name="set_behavior">Perilaku</string>
     <string name="set_keep_shuffle">Ingat putar acak</string>

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

@@ -49,7 +49,6 @@
     <string name="set_quality_covers">Ignora le copertine del Media Store</string>
 
     <string name="set_audio">Audio</string>
-    <string name="set_focus">Focus audio</string>
 
     <string name="set_behavior">Comportamento</string>
     <string name="set_keep_shuffle">Ricorda casuale</string>

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

@@ -47,7 +47,6 @@
     <string name="set_quality_covers">미디어 스토어 앨범 커버 무시</string>
 
     <string name="set_audio">오디오</string>
-    <string name="set_focus">오디오 포커스</string>
 
     <string name="set_behavior">동작</string>
 

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

@@ -70,8 +70,6 @@
     <string name="set_alt_shuffle">Voorkeur aan shuffle actie</string>
 
     <string name="set_audio">Audio</string>
-    <string name="set_focus">Audiofocus</string>
-    <string name="set_focus_desc">Pauze wanneer andere audio speelt (ex. Gesprekken)</string>
 
     <string name="set_behavior">Gedrag</string>
     <string name="set_song_mode">Wanneer een liedje is geselecteerd</string>

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

@@ -48,7 +48,6 @@
     <string name="set_quality_covers">Ignoruj okładki z Media Store</string>
 
     <string name="set_audio">Dźwięk</string>
-    <string name="set_focus">Wyciszanie otoczenia</string>
 
     <string name="set_behavior">Zachowanie</string>
 

app/src/main/res/values-pt-rBR/strings.xml

@@ -48,7 +48,6 @@
     <string name="set_quality_covers">Ignorar capas Media Store</string>
 
     <string name="set_audio">Áudio</string>
-    <string name="set_focus">Foco do áudio</string>
 
     <string name="set_behavior">Comportamento</string>
     <string name="set_keep_shuffle">Memorizar aleatorização</string>

app/src/main/res/values-pt-rPT/strings.xml

@@ -49,7 +49,6 @@
     <string name="set_quality_covers">Ignorar capas Media Store</string>
 
     <string name="set_audio">Áudio</string>
-    <string name="set_focus">Foco de áudio</string>
 
     <string name="set_behavior">Comportamento</string>
     <string name="set_keep_shuffle">Memorizar aleatorização</string>

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

@@ -49,7 +49,6 @@
     <string name="set_quality_covers">Ignoră coperțile Media Store</string>
 
     <string name="set_audio">Audio</string>
-    <string name="set_focus">Concentrare audio</string>
 
     <string name="set_behavior">Comportament</string>
 

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

@@ -81,8 +81,6 @@
     <string name="set_alt_shuffle">Режим перемешивания</string>
 
     <string name="set_audio">Звук</string>
-    <string name="set_focus">Аудио-фокус</string>
-    <string name="set_focus_desc">Ставить на паузу при звонках</string>
     <string name="set_replay_gain">ReplayGain (экспериментально)</string>
     <string name="set_off">Выкл.</string>
     <string name="set_replay_gain_track">По треку</string>

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

@@ -48,7 +48,6 @@
     <string name="set_quality_covers">Medya Deposu albüm kapağını yoksay</string>
 
     <string name="set_audio">Ses</string>
-    <string name="set_focus">Ses odaklama</string>
 
     <string name="set_behavior">Tercihler</string>
 

app/src/main/res/values-v31/config.xml

@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <bool name="enable_theme_settings">false</bool>
-    <bool name="enable_audio_focus_setting">false</bool>
 </resources>

app/src/main/res/values-zh-rCN/strings.xml

@@ -80,8 +80,6 @@
     <string name="set_alt_shuffle">偏好随机播放操作</string>
 
     <string name="set_audio">音频</string>
-    <string name="set_focus">音频焦点</string>
-    <string name="set_focus_desc">有其它音频播放（比如电话）时暂停</string>
     <string name="set_headset_autoplay">自动播放</string>
     <string name="set_headset_autoplay_desc">连接至耳机时总是自动播放（并非在所有设备上都有用）</string>
     <string name="set_replay_gain">回放增益（实验性）</string>

app/src/main/res/values-zh-rTW/strings.xml

@@ -47,7 +47,6 @@
     <string name="set_quality_covers">忽略音訊檔內嵌的專輯封面</string>
 
     <string name="set_audio">音訊</string>
-    <string name="set_focus">音頻焦點</string>
 
     <string name="set_behavior">行為</string>
     <string name="set_keep_shuffle">記住隨機播放</string>

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

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <bool name="enable_theme_settings">true</bool>
-    <bool name="enable_audio_focus_setting">true</bool>
     <integer name="recycler_spans">1</integer>
 </resources>

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

@@ -80,8 +80,6 @@
     <string name="set_alt_shuffle">Prefer shuffle action</string>
 
     <string name="set_audio">Audio</string>
-    <string name="set_focus">Audio focus</string>
-    <string name="set_focus_desc">Pause when other audio plays (ex. Calls)</string>
     <string name="set_headset_autoplay">Headset autoplay</string>
     <string name="set_headset_autoplay_desc">Always start playing when a headset is connected (may not work on all devices)</string>
     <string name="set_replay_gain">ReplayGain (Experimental)</string>

app/src/main/res/xml/prefs_main.xml

@@ -78,14 +78,6 @@
         app:layout="@layout/item_header"
         app:title="@string/set_audio">
 
-        <org.oxycblt.auxio.settings.pref.M3SwitchPreference
-            app:defaultValue="true"
-            app:iconSpaceReserved="false"
-            app:isPreferenceVisible="@bool/enable_audio_focus_setting"
-            app:key="KEY_AUDIO_FOCUS"
-            app:summary="@string/set_focus_desc"
-            app:title="@string/set_focus" />
-
         <org.oxycblt.auxio.settings.pref.M3SwitchPreference
             app:defaultValue="false"
             app:iconSpaceReserved="false"