class ExampleLibraryPlaybackService : MediaLibraryService() {

    private var exoPlayer: ExoPlayer? = null
    private var mediaSession: MediaLibrarySession? = null
    @OptIn(DelicateCoroutinesApi::class)
    override fun onCreate() {
        super.onCreate()
        setMediaNotificationProvider(ExampleMediaNotificationProvider(this))
        val exoPlayerBuilder = ExoPlayer.Builder(this)
        exoPlayer = exoPlayerBuilder.build()
        val commandButtonExtras = Bundle()
        commandButtonExtras.putInt(
            DefaultMediaNotificationProvider.COMMAND_KEY_COMPACT_VIEW_INDEX,
            0
        )
        val sessionCommand = SessionCommand(SAVE_TO_FAVORITES, Bundle.EMPTY)
        val favoriteButton =
            CommandButton.Builder()
                .setEnabled(true)
                .setDisplayName("favorites")
                .setExtras(commandButtonExtras)
                .setIconResId(R.drawable.favorite)
                .setSessionCommand(sessionCommand)
                .build()

        val intent = packageManager.getLaunchIntentForPackage(packageName)
        intent?.putExtra("DESTINATION", "player")
        val pendingIntent = PendingIntent.getActivity(this, 0, intent, FLAG_IMMUTABLE or FLAG_UPDATE_CURRENT)

        mediaSession =
            MediaLibrarySession.Builder(
                this,
                exoPlayer!!,
                object : MediaLibrarySession.Callback {
                  //......
                    
                })
                .setCustomLayout(ImmutableList.of(favoriteButton))
                .setSessionActivity(pendingIntent)
                .build()

    }
    override fun onDestroy() {
        exoPlayer?.stop()
        exoPlayer?.release()
        exoPlayer = null
        mediaSession?.release()
        mediaSession = null
        CacheController.release()

        super.onDestroy()
    }

    override fun onGetSession(controllerInfo: MediaSession.ControllerInfo): MediaLibrarySession? {
        return mediaSession
    }
}

<service
            android:name="cn.xybbz.common.music.ExampleLibraryPlaybackService"
            android:exported="true"
            android:foregroundServiceType="mediaPlayback">
            <intent-filter>
                <action android:name="androidx.media3.session.MediaSessionService" />
                <action android:name="android.media.browse.MediaBrowserService"/>
            </intent-filter>
        </service>