Listen to playback events

1
val listener = object : PlaybackListener {
2
    override fun onPlay() {
3
        // Playback started or resumed
4
    }
5
    override fun onPause() {
6
        // Playback paused (not called for ended/idle transitions)
7
    }
8
    override fun onPlaybackStateChanged(isPlaying: Boolean) {
9
        // Unified play/pause state change
10
    }
11
    override fun onPlayerReady(durationMs: Long) {
12
        // Called once per media item when the player reaches READY the first time
13
    }
14
    override fun onTimeUpdate(currentPositionMs: Long, durationMs: Long, bufferedPositionMs: Long) {
15
        // Periodic time updates during active playback (default ~500ms)
16
    }
17
    override fun onSeekStart(currentPositionMs: Long) {
18
        // Fired when a seek begins (user scrub or programmatic seekTo)
19
    }
20
    override fun onSeekEnd(fromPositionMs: Long, toPositionMs: Long, durationMs: Long) {
21
        // Fired when seek completes
22
    }
23
    override fun onBufferingStart() {
24
        // Transition to buffering state
25
    }
26
    override fun onBufferingEnd() {
27
        // Transition from buffering to ready
28
    }
29
    override fun onVolumeChanged(volumeLevel: Float) {
30
        // Device volume changed (0.0..1.0)
31
    }
32
    override fun onMuteStateChanged(isMuted: Boolean) {
33
        // Mute state changed
34
    }
35
    override fun onPlaybackRateChanged(rate: Float) {
36
        // Playback speed updated
37
    }
38
    override fun onCompleted() {
39
        // Reached end of media (still called even if loop=true, before repeating)
40
    }
41
    override fun onError(error: PlaybackException) {
42
        // Playback or validation error
43
    }
44
}
45
player.addPlaybackListener(listener)

1
player.removePlaybackListener(listener)