Player.Listener

fun onAudioAttributesChanged(audioAttributes: AudioAttributes!): Unit

Called when the value of getAudioAttributes changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

@UnstableApi
fun onAudioSessionIdChanged(audioSessionId: Int): Unit

Called when the audio session ID changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onAvailableCommandsChanged(availableCommands: Player.Commands!): Unit

Called when the value returned from isCommandAvailable changes for at least one Command.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onCues(cueGroup: CueGroup!): Unit

Called when the value of getCurrentCues changes.

Both this method and onCues are called when there is a change in the cues. You should only implement one or the other.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

@UnstableApi
fun onCues(cues: (Mutable)List<Cue!>!): Unit

Called when the value of getCurrentCues changes.

Both this method and onCues are called when there is a change in the cues. You should only implement one or the other.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onDeviceInfoChanged(deviceInfo: DeviceInfo!): Unit

Called when the device information changes

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onDeviceVolumeChanged(volume: Int, muted: Boolean): Unit

Called when the value of getDeviceVolume or isDeviceMuted changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onEvents(player: Player!, events: Player.Events!): Unit

Called when one or more player states changed.

State changes and events that happen within one Looper message queue iteration are reported together and only after all individual callbacks were triggered.

Listeners should prefer this method over individual callbacks in the following cases:

• They intend to trigger the same logic for multiple events (e.g. when updating a UI for both onPlaybackStateChanged and onPlayWhenReadyChanged).
• They need access to the Player object to trigger further events (e.g. to call seekTo after a onMediaItemTransition).
• They intend to use multiple state values together or in combination with Player getter methods. For example using getCurrentMediaItemIndex with the timeline provided in onTimelineChanged is only safe from within this method.
• They are interested in events that logically happened together (e.g onPlaybackStateChanged to STATE_BUFFERING because of onMediaItemTransition).

fun onIsLoadingChanged(isLoading: Boolean): Unit

Called when the player starts or stops loading the source.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onIsPlayingChanged(isPlaying: Boolean): Unit

Called when the value of isPlaying changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onMaxSeekToPreviousPositionChanged(maxSeekToPreviousPositionMs: Long): Unit

Called when the value of getMaxSeekToPreviousPosition changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onMediaItemTransition(
    mediaItem: MediaItem?,
    @Player.MediaItemTransitionReason reason: Int
): Unit

Called when playback transitions to a media item or starts repeating a media item according to the current repeat mode.

Note that this callback is also called when the value of getCurrentTimeline becomes non-empty or empty.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onMediaMetadataChanged(mediaMetadata: MediaMetadata!): Unit

Called when the value of getMediaMetadata changes.

This method may be called multiple times in quick succession.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

@UnstableApi
fun onMetadata(metadata: Metadata!): Unit

Called when there is metadata associated with the current playback time.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onPlayWhenReadyChanged(
    playWhenReady: Boolean,
    @Player.PlayWhenReadyChangeReason reason: Int
): Unit

Called when the value returned from getPlayWhenReady changes.

The current playWhenReady value may be re-reported if the reason for this value changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onPlaybackParametersChanged(playbackParameters: PlaybackParameters!): Unit

Called when the value of getPlaybackParameters changes. The playback parameters may change due to a call to setPlaybackParameters, or the player itself may change them (for example, if audio playback switches to passthrough or offload mode, where speed adjustment is no longer possible).

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onPlaybackStateChanged(@Player.State playbackState: Int): Unit

Called when the value returned from getPlaybackState changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onPlaybackSuppressionReasonChanged(
    @Player.PlaybackSuppressionReason playbackSuppressionReason: Int
): Unit

Called when the value returned from getPlaybackSuppressionReason changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onPlayerError(error: PlaybackException!): Unit

Called when an error occurs. The playback state will transition to STATE_IDLE immediately after this method is called. The player instance can still be used, and release must still be called on the player should it no longer be required.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

Implementations of Player may pass an instance of a subclass of PlaybackException to this method in order to include more information about the error.

fun onPlayerErrorChanged(error: PlaybackException?): Unit

Called when the PlaybackException returned by getPlayerError changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

Implementations of Player may pass an instance of a subclass of PlaybackException to this method in order to include more information about the error.

fun onPlaylistMetadataChanged(mediaMetadata: MediaMetadata!): Unit

Called when the value of getPlaylistMetadata changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onPositionDiscontinuity(
    oldPosition: Player.PositionInfo!,
    newPosition: Player.PositionInfo!,
    @Player.DiscontinuityReason reason: Int
): Unit

Called when a position discontinuity occurs.

A position discontinuity occurs when the playing period changes, the playback position jumps within the period currently being played, or when the playing period has been skipped or removed.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onRenderedFirstFrame(): Unit

Called when a frame is rendered for the first time since setting the surface, or since the renderer was reset, or since the stream being rendered was changed.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onRepeatModeChanged(@Player.RepeatMode repeatMode: Int): Unit

Called when the value of getRepeatMode changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onSeekBackIncrementChanged(seekBackIncrementMs: Long): Unit

Called when the value of getSeekBackIncrement changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onSeekForwardIncrementChanged(seekForwardIncrementMs: Long): Unit

Called when the value of getSeekForwardIncrement changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onShuffleModeEnabledChanged(shuffleModeEnabled: Boolean): Unit

Called when the value of getShuffleModeEnabled changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onSkipSilenceEnabledChanged(skipSilenceEnabled: Boolean): Unit

Called when skipping silences is enabled or disabled in the audio stream.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onSurfaceSizeChanged(width: Int, height: Int): Unit

Called each time there's a change in the size of the surface onto which the video is being rendered.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onTimelineChanged(
    timeline: Timeline!,
    @Player.TimelineChangeReason reason: Int
): Unit

Called when the value of getCurrentTimeline changes.

Note that the current MediaItem or playback position may change as a result of a timeline change. If playback can't continue smoothly because of this timeline change, a separate onPositionDiscontinuity callback will be triggered.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onTrackSelectionParametersChanged(parameters: TrackSelectionParameters!): Unit

Called when the value returned from getTrackSelectionParameters changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onTracksChanged(tracks: Tracks!): Unit

Called when the value of getCurrentTracks changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onVideoSizeChanged(videoSize: VideoSize!): Unit

Called each time when getVideoSize changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.

fun onVolumeChanged(volume: Float): Unit

Called when the value of getVolume changes.

onEvents will also be called to report this event along with other events that happen in the same Looper message queue iteration.