I develop an audio player with [clients - service] architectures using "exoplayer" as Playback player

Question

MediaMusicServies code

MediaSessionConnection code

MediaStoreSource code

PlaybackPreparer code

MusicPlayerEventListener code

/* when press play button every thing run will and MediaSession connect successfully with playback service when press play button every thing run will and MediaSession connect successfully with playback service but exoplayer can`t playing audio */