All Known Subinterfaces:

ExoPlayer

All Known Implementing Classes:

BasePlayer, CastPlayer, ForwardingPlayer, LegacyMediaPlayerWrapper, SimpleBasePlayer, SimpleExoPlayer, StubExoPlayer, StubPlayer
```
public interface Player
```
A media player interface defining traditional high-level functionality, such as the ability to play, pause, seek and query properties of the currently playing media.
All methods must be called from a single application thread unless indicated otherwise. Callbacks in registered listeners are called on the same thread.
This interface includes some convenience methods that can be implemented by calling other methods in the interface. BasePlayer implements these convenience methods so inheriting BasePlayer is recommended when implementing the interface so that only the minimal set of required methods can be implemented.
Some important properties of media players that implement this interface are:
- They can provide a Timeline representing the structure of the media being played, which can be obtained by calling getCurrentTimeline().
- They can provide a Tracks defining the currently available tracks and which are selected to be rendered, which can be obtained by calling getCurrentTracks().

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static interface`	`Player.Command`	Commands that indicate which method calls are currently permitted on a particular `Player` instance.
`static class`	`Player.Commands`	A set of commands.
`static interface`	`Player.DiscontinuityReason`	Reasons for position discontinuities.
`static interface`	`Player.Event`	Events that can be reported via `Player.Listener.onEvents(Player, Events)`.
`static class`	`Player.Events`	A set of events.
`static interface`	`Player.Listener`	Listener for changes in a `Player`.
`static interface`	`Player.MediaItemTransitionReason`	Reasons for media item transitions.
`static interface`	`Player.PlaybackSuppressionReason`	Reason why playback is suppressed even though `getPlayWhenReady()` is `true`.
`static interface`	`Player.PlayWhenReadyChangeReason`	Reasons for `playWhenReady` changes.
`static class`	`Player.PositionInfo`	Position info describing a playback position involved in a discontinuity.
`static interface`	`Player.RepeatMode`	Repeat modes for playback.
`static interface`	`Player.State`	Playback state.
`static interface`	`Player.TimelineChangeReason`	Reasons for timeline changes.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`COMMAND_ADJUST_DEVICE_VOLUME`	Command to increase and decrease the device volume and mute it.
`static int`	`COMMAND_CHANGE_MEDIA_ITEMS`	Command to change the media items in the playlist.
`static int`	`COMMAND_GET_AUDIO_ATTRIBUTES`	Command to get the player current `AudioAttributes`.
`static int`	`COMMAND_GET_CURRENT_MEDIA_ITEM`	Command to get information about the currently playing `MediaItem`.
`static int`	`COMMAND_GET_DEVICE_VOLUME`	Command to get the device volume and whether it is muted.
`static int`	`COMMAND_GET_MEDIA_ITEMS_METADATA`	Command to get metadata related to the playlist and current `MediaItem`.
`static int`	`COMMAND_GET_TEXT`	Command to get the text that should currently be displayed by the player.
`static int`	`COMMAND_GET_TIMELINE`	Command to get the information about the current timeline.
`static int`	`COMMAND_GET_TRACKS`	Command to get details of the current track selection.
`static int`	`COMMAND_GET_VOLUME`	Command to get the player volume.
`static int`	`COMMAND_INVALID`	Represents an invalid `Player.Command`.
`static int`	`COMMAND_PLAY_PAUSE`	Command to start, pause or resume playback.
`static int`	`COMMAND_PREPARE`	Command to prepare the player.
`static int`	`COMMAND_SEEK_BACK`	Command to seek back by a fixed increment inside the current `MediaItem`.
`static int`	`COMMAND_SEEK_FORWARD`	Command to seek forward by a fixed increment inside the current `MediaItem`.
`static int`	`COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM`	Command to seek anywhere inside the current `MediaItem`.
`static int`	`COMMAND_SEEK_IN_CURRENT_WINDOW`	Deprecated. Use `COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM` instead.
`static int`	`COMMAND_SEEK_TO_DEFAULT_POSITION`	Command to seek to the default position of the current `MediaItem`.
`static int`	`COMMAND_SEEK_TO_MEDIA_ITEM`	Command to seek anywhere in any `MediaItem`.
`static int`	`COMMAND_SEEK_TO_NEXT`	Command to seek to a later position in the current `MediaItem` or the default position of the next `MediaItem`.
`static int`	`COMMAND_SEEK_TO_NEXT_MEDIA_ITEM`	Command to seek to the default position of the next `MediaItem`.
`static int`	`COMMAND_SEEK_TO_NEXT_WINDOW`	Deprecated. Use `COMMAND_SEEK_TO_NEXT_MEDIA_ITEM` instead.
`static int`	`COMMAND_SEEK_TO_PREVIOUS`	Command to seek to an earlier position in the current `MediaItem` or the default position of the previous `MediaItem`.
`static int`	`COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM`	Command to seek to the default position of the previous `MediaItem`.
`static int`	`COMMAND_SEEK_TO_PREVIOUS_WINDOW`	Deprecated. Use `COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM` instead.
`static int`	`COMMAND_SEEK_TO_WINDOW`	Deprecated. Use `COMMAND_SEEK_TO_MEDIA_ITEM` instead.
`static int`	`COMMAND_SET_DEVICE_VOLUME`	Command to set the device volume.
`static int`	`COMMAND_SET_MEDIA_ITEM`	Command to set a `MediaItem`.
`static int`	`COMMAND_SET_MEDIA_ITEMS_METADATA`	Command to set the playlist metadata.
`static int`	`COMMAND_SET_REPEAT_MODE`	Command to set the repeat mode.
`static int`	`COMMAND_SET_SHUFFLE_MODE`	Command to enable shuffling.
`static int`	`COMMAND_SET_SPEED_AND_PITCH`	Command to set the playback speed and pitch.
`static int`	`COMMAND_SET_TRACK_SELECTION_PARAMETERS`	Command to set the player's track selection parameters.
`static int`	`COMMAND_SET_VIDEO_SURFACE`	Command to set and clear the surface on which to render the video.
`static int`	`COMMAND_SET_VOLUME`	Command to set the player volume.
`static int`	`COMMAND_STOP`	Command to stop playback.
`static int`	`DISCONTINUITY_REASON_AUTO_TRANSITION`	Automatic playback transition from one period in the timeline to the next.
`static int`	`DISCONTINUITY_REASON_INTERNAL`	Discontinuity introduced internally (e.g.
`static int`	`DISCONTINUITY_REASON_REMOVE`	Discontinuity caused by the removal of the current period from the `Timeline`.
`static int`	`DISCONTINUITY_REASON_SEEK`	Seek within the current period or to another period.
`static int`	`DISCONTINUITY_REASON_SEEK_ADJUSTMENT`	Seek adjustment due to being unable to seek to the requested position or because the seek was permitted to be inexact.
`static int`	`DISCONTINUITY_REASON_SKIP`	Discontinuity introduced by a skipped period (for instance a skipped ad).
`static int`	`EVENT_AUDIO_ATTRIBUTES_CHANGED`	`getAudioAttributes()` changed.
`static int`	`EVENT_AUDIO_SESSION_ID`	The audio session id was set.
`static int`	`EVENT_AVAILABLE_COMMANDS_CHANGED`	`isCommandAvailable(int)` changed for at least one `Player.Command`.
`static int`	`EVENT_CUES`	`getCurrentCues()` changed.
`static int`	`EVENT_DEVICE_INFO_CHANGED`	`getDeviceInfo()` changed.
`static int`	`EVENT_DEVICE_VOLUME_CHANGED`	`getDeviceVolume()` changed.
`static int`	`EVENT_IS_LOADING_CHANGED`	`isLoading()` ()} changed.
`static int`	`EVENT_IS_PLAYING_CHANGED`	`isPlaying()` changed.
`static int`	`EVENT_MAX_SEEK_TO_PREVIOUS_POSITION_CHANGED`	`getMaxSeekToPreviousPosition()` changed.
`static int`	`EVENT_MEDIA_ITEM_TRANSITION`	`getCurrentMediaItem()` changed or the player started repeating the current item.
`static int`	`EVENT_MEDIA_METADATA_CHANGED`	`getMediaMetadata()` changed.
`static int`	`EVENT_METADATA`	Metadata associated with the current playback time changed.
`static int`	`EVENT_PLAY_WHEN_READY_CHANGED`	`getPlayWhenReady()` changed.
`static int`	`EVENT_PLAYBACK_PARAMETERS_CHANGED`	`getPlaybackParameters()` changed.
`static int`	`EVENT_PLAYBACK_STATE_CHANGED`	`getPlaybackState()` changed.
`static int`	`EVENT_PLAYBACK_SUPPRESSION_REASON_CHANGED`	`getPlaybackSuppressionReason()` changed.
`static int`	`EVENT_PLAYER_ERROR`	`getPlayerError()` changed.
`static int`	`EVENT_PLAYLIST_METADATA_CHANGED`	`getPlaylistMetadata()` changed.
`static int`	`EVENT_POSITION_DISCONTINUITY`	A position discontinuity occurred.
`static int`	`EVENT_RENDERED_FIRST_FRAME`	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.
`static int`	`EVENT_REPEAT_MODE_CHANGED`	`getRepeatMode()` changed.
`static int`	`EVENT_SEEK_BACK_INCREMENT_CHANGED`	`getSeekBackIncrement()` changed.
`static int`	`EVENT_SEEK_FORWARD_INCREMENT_CHANGED`	`getSeekForwardIncrement()` changed.
`static int`	`EVENT_SHUFFLE_MODE_ENABLED_CHANGED`	`getShuffleModeEnabled()` changed.
`static int`	`EVENT_SKIP_SILENCE_ENABLED_CHANGED`	Skipping silences in the audio stream is enabled or disabled.
`static int`	`EVENT_SURFACE_SIZE_CHANGED`	The size of the surface onto which the video is being rendered changed.
`static int`	`EVENT_TIMELINE_CHANGED`	`getCurrentTimeline()` changed.
`static int`	`EVENT_TRACK_SELECTION_PARAMETERS_CHANGED`	`getTrackSelectionParameters()` changed.
`static int`	`EVENT_TRACKS_CHANGED`	`getCurrentTracks()` changed.
`static int`	`EVENT_VIDEO_SIZE_CHANGED`	`getVideoSize()` changed.
`static int`	`EVENT_VOLUME_CHANGED`	`getVolume()` changed.
`static int`	`MEDIA_ITEM_TRANSITION_REASON_AUTO`	Playback has automatically transitioned to the next media item.
`static int`	`MEDIA_ITEM_TRANSITION_REASON_PLAYLIST_CHANGED`	The current media item has changed because of a change in the playlist.
`static int`	`MEDIA_ITEM_TRANSITION_REASON_REPEAT`	The media item has been repeated.
`static int`	`MEDIA_ITEM_TRANSITION_REASON_SEEK`	A seek to another media item has occurred.
`static int`	`PLAY_WHEN_READY_CHANGE_REASON_AUDIO_BECOMING_NOISY`	Playback has been paused to avoid becoming noisy.
`static int`	`PLAY_WHEN_READY_CHANGE_REASON_AUDIO_FOCUS_LOSS`	Playback has been paused because of a loss of audio focus.
`static int`	`PLAY_WHEN_READY_CHANGE_REASON_END_OF_MEDIA_ITEM`	Playback has been paused at the end of a media item.
`static int`	`PLAY_WHEN_READY_CHANGE_REASON_REMOTE`	Playback has been started or paused because of a remote change.
`static int`	`PLAY_WHEN_READY_CHANGE_REASON_USER_REQUEST`	Playback has been started or paused by a call to `setPlayWhenReady(boolean)`.
`static int`	`PLAYBACK_SUPPRESSION_REASON_NONE`	Playback is not suppressed.
`static int`	`PLAYBACK_SUPPRESSION_REASON_TRANSIENT_AUDIO_FOCUS_LOSS`	Playback is suppressed due to transient audio focus loss.
`static int`	`REPEAT_MODE_ALL`	Repeats the entire timeline infinitely.
`static int`	`REPEAT_MODE_OFF`	Normal playback without repetition.
`static int`	`REPEAT_MODE_ONE`	Repeats the currently playing `MediaItem` infinitely during ongoing playback.
`static int`	`STATE_BUFFERING`	The player is not able to immediately play the media, but is doing work toward being able to do so.
`static int`	`STATE_ENDED`	The player has finished playing the media.
`static int`	`STATE_IDLE`	The player is idle, meaning it holds only limited resources.
`static int`	`STATE_READY`	The player is able to immediately play from its current position.
`static int`	`TIMELINE_CHANGE_REASON_PLAYLIST_CHANGED`	Timeline changed as a result of a change of the playlist items or the order of the items.
`static int`	`TIMELINE_CHANGE_REASON_SOURCE_UPDATE`	Timeline changed as a result of a source update (e.g.

Method Summary

All Methods Instance Methods Abstract Methods Deprecated Methods
Modifier and Type	Method	Description
`void`	`addListener(Player.Listener listener)`	Registers a listener to receive all events from the player.
`void`	`addMediaItem(int index, MediaItem mediaItem)`	Adds a media item at the given index of the playlist.
`void`	`addMediaItem(MediaItem mediaItem)`	Adds a media item to the end of the playlist.
`void`	`addMediaItems(int index, List<MediaItem> mediaItems)`	Adds a list of media items at the given index of the playlist.
`void`	`addMediaItems(List<MediaItem> mediaItems)`	Adds a list of media items to the end of the playlist.
`boolean`	`canAdvertiseSession()`	Returns whether the player can be used to advertise a media session.
`void`	`clearMediaItems()`	Clears the playlist.
`void`	`clearVideoSurface()`	Clears any `Surface`, `SurfaceHolder`, `SurfaceView` or `TextureView` currently set on the player.
`void`	`clearVideoSurface(Surface surface)`	Clears the `Surface` onto which video is being rendered if it matches the one passed.
`void`	`clearVideoSurfaceHolder(SurfaceHolder surfaceHolder)`	Clears the `SurfaceHolder` that holds the `Surface` onto which video is being rendered if it matches the one passed.
`void`	`clearVideoSurfaceView(SurfaceView surfaceView)`	Clears the `SurfaceView` onto which video is being rendered if it matches the one passed.
`void`	`clearVideoTextureView(TextureView textureView)`	Clears the `TextureView` onto which video is being rendered if it matches the one passed.
`void`	`decreaseDeviceVolume()`	Decreases the volume of the device.
`Looper`	`getApplicationLooper()`	Returns the `Looper` associated with the application thread that's used to access the player and on which player events are received.
`AudioAttributes`	`getAudioAttributes()`	Returns the attributes for audio playback.
`Player.Commands`	`getAvailableCommands()`	Returns the player's currently available `Player.Commands`.
`int`	`getBufferedPercentage()`	Returns an estimate of the percentage in the current content or ad up to which data is buffered, or 0 if no estimate is available.
`long`	`getBufferedPosition()`	Returns an estimate of the position in the current content or ad up to which data is buffered, in milliseconds.
`long`	`getContentBufferedPosition()`	If `isPlayingAd()` returns `true`, returns an estimate of the content position in the current content up to which data is buffered, in milliseconds.
`long`	`getContentDuration()`	If `isPlayingAd()` returns `true`, returns the duration of the current content in milliseconds, or `C.TIME_UNSET` if the duration is not known.
`long`	`getContentPosition()`	If `isPlayingAd()` returns `true`, returns the content position that will be played once all ads in the ad group have finished playing, in milliseconds.
`int`	`getCurrentAdGroupIndex()`	If `isPlayingAd()` returns true, returns the index of the ad group in the period currently being played.
`int`	`getCurrentAdIndexInAdGroup()`	If `isPlayingAd()` returns true, returns the index of the ad in its ad group.
`CueGroup`	`getCurrentCues()`	Returns the current `CueGroup`.
`long`	`getCurrentLiveOffset()`	Returns the offset of the current playback position from the live edge in milliseconds, or `C.TIME_UNSET` if the current `MediaItem` `isCurrentMediaItemLive()` isn't live} or the offset is unknown.
`Object`	`getCurrentManifest()`	Returns the current manifest.
`MediaItem`	`getCurrentMediaItem()`	Returns the currently playing `MediaItem`.
`int`	`getCurrentMediaItemIndex()`	Returns the index of the current `MediaItem` in the `timeline`, or the prospective index if the `current timeline` is empty.
`int`	`getCurrentPeriodIndex()`	Returns the index of the period currently being played.
`long`	`getCurrentPosition()`	Returns the playback position in the current content or ad, in milliseconds, or the prospective position in milliseconds if the `current timeline` is empty.
`Timeline`	`getCurrentTimeline()`	Returns the current `Timeline`.
`Tracks`	`getCurrentTracks()`	Returns the current tracks.
`int`	`getCurrentWindowIndex()`	Deprecated. Use `getCurrentMediaItemIndex()` instead.
`DeviceInfo`	`getDeviceInfo()`	Gets the device information.
`int`	`getDeviceVolume()`	Gets the current volume of the device.
`long`	`getDuration()`	Returns the duration of the current content or ad in milliseconds, or `C.TIME_UNSET` if the duration is not known.
`long`	`getMaxSeekToPreviousPosition()`	Returns the maximum position for which `seekToPrevious()` seeks to the previous `MediaItem`, in milliseconds.
`MediaItem`	`getMediaItemAt(int index)`	Returns the `MediaItem` at the given index.
`int`	`getMediaItemCount()`	Returns the number of media items in the playlist.
`MediaMetadata`	`getMediaMetadata()`	Returns the current combined `MediaMetadata`, or `MediaMetadata.EMPTY` if not supported.
`int`	`getNextMediaItemIndex()`	Returns the index of the `MediaItem` that will be played if `seekToNextMediaItem()` is called, which may depend on the current repeat mode and whether shuffle mode is enabled.
`int`	`getNextWindowIndex()`	Deprecated. Use `getNextMediaItemIndex()` instead.
`PlaybackParameters`	`getPlaybackParameters()`	Returns the currently active playback parameters.
`@com.google.android.exoplayer2.Player.State int`	`getPlaybackState()`	Returns the current playback state of the player.
`@com.google.android.exoplayer2.Player.PlaybackSuppressionReason int`	`getPlaybackSuppressionReason()`	Returns the reason why playback is suppressed even though `getPlayWhenReady()` is `true`, or `PLAYBACK_SUPPRESSION_REASON_NONE` if playback is not suppressed.
`PlaybackException`	`getPlayerError()`	Returns the error that caused playback to fail.
`MediaMetadata`	`getPlaylistMetadata()`	Returns the playlist `MediaMetadata`, as set by `setPlaylistMetadata(MediaMetadata)`, or `MediaMetadata.EMPTY` if not supported.
`boolean`	`getPlayWhenReady()`	Whether playback will proceed when `getPlaybackState()` == `STATE_READY`.
`int`	`getPreviousMediaItemIndex()`	Returns the index of the `MediaItem` that will be played if `seekToPreviousMediaItem()` is called, which may depend on the current repeat mode and whether shuffle mode is enabled.
`int`	`getPreviousWindowIndex()`	Deprecated. Use `getPreviousMediaItemIndex()` instead.
`@com.google.android.exoplayer2.Player.RepeatMode int`	`getRepeatMode()`	Returns the current `Player.RepeatMode` used for playback.
`long`	`getSeekBackIncrement()`	Returns the `seekBack()` increment.
`long`	`getSeekForwardIncrement()`	Returns the `seekForward()` increment.
`boolean`	`getShuffleModeEnabled()`	Returns whether shuffling of media items is enabled.
`Size`	`getSurfaceSize()`	Gets the size of the surface on which the video is rendered.
`long`	`getTotalBufferedDuration()`	Returns an estimate of the total buffered duration from the current position, in milliseconds.
`TrackSelectionParameters`	`getTrackSelectionParameters()`	Returns the parameters constraining the track selection.
`VideoSize`	`getVideoSize()`	Gets the size of the video.
`float`	`getVolume()`	Returns the audio volume, with 0 being silence and 1 being unity gain (signal unchanged).
`boolean`	`hasNext()`	Deprecated. Use `hasNextMediaItem()` instead.
`boolean`	`hasNextMediaItem()`	Returns whether a next `MediaItem` exists, which may depend on the current repeat mode and whether shuffle mode is enabled.
`boolean`	`hasNextWindow()`	Deprecated. Use `hasNextMediaItem()` instead.
`boolean`	`hasPrevious()`	Deprecated. Use `hasPreviousMediaItem()` instead.
`boolean`	`hasPreviousMediaItem()`	Returns whether a previous media item exists, which may depend on the current repeat mode and whether shuffle mode is enabled.
`boolean`	`hasPreviousWindow()`	Deprecated. Use `hasPreviousMediaItem()` instead.
`void`	`increaseDeviceVolume()`	Increases the volume of the device.
`boolean`	`isCommandAvailable(@com.google.android.exoplayer2.Player.Command int command)`	Returns whether the provided `Player.Command` is available.
`boolean`	`isCurrentMediaItemDynamic()`	Returns whether the current `MediaItem` is dynamic (may change when the `Timeline` is updated), or `false` if the `Timeline` is empty.
`boolean`	`isCurrentMediaItemLive()`	Returns whether the current `MediaItem` is live, or `false` if the `Timeline` is empty.
`boolean`	`isCurrentMediaItemSeekable()`	Returns whether the current `MediaItem` is seekable, or `false` if the `Timeline` is empty.
`boolean`	`isCurrentWindowDynamic()`	Deprecated. Use `isCurrentMediaItemDynamic()` instead.
`boolean`	`isCurrentWindowLive()`	Deprecated. Use `isCurrentMediaItemLive()` instead.
`boolean`	`isCurrentWindowSeekable()`	Deprecated. Use `isCurrentMediaItemSeekable()` instead.
`boolean`	`isDeviceMuted()`	Gets whether the device is muted or not.
`boolean`	`isLoading()`	Whether the player is currently loading the source.
`boolean`	`isPlaying()`	Returns whether the player is playing, i.e.
`boolean`	`isPlayingAd()`	Returns whether the player is currently playing an ad.
`void`	`moveMediaItem(int currentIndex, int newIndex)`	Moves the media item at the current index to the new index.
`void`	`moveMediaItems(int fromIndex, int toIndex, int newIndex)`	Moves the media item range to the new index.
`void`	`next()`	Deprecated. Use `seekToNextMediaItem()` instead.
`void`	`pause()`	Pauses playback.
`void`	`play()`	Resumes playback as soon as `getPlaybackState()` == `STATE_READY`.
`void`	`prepare()`	Prepares the player.
`void`	`previous()`	Deprecated. Use `seekToPreviousMediaItem()` instead.
`void`	`release()`	Releases the player.
`void`	`removeListener(Player.Listener listener)`	Unregister a listener registered through `addListener(Listener)`.
`void`	`removeMediaItem(int index)`	Removes the media item at the given index of the playlist.
`void`	`removeMediaItems(int fromIndex, int toIndex)`	Removes a range of media items from the playlist.
`void`	`seekBack()`	Seeks back in the current `MediaItem` by `getSeekBackIncrement()` milliseconds.
`void`	`seekForward()`	Seeks forward in the current `MediaItem` by `getSeekForwardIncrement()` milliseconds.
`void`	`seekTo(int mediaItemIndex, long positionMs)`	Seeks to a position specified in milliseconds in the specified `MediaItem`.
`void`	`seekTo(long positionMs)`	Seeks to a position specified in milliseconds in the current `MediaItem`.
`void`	`seekToDefaultPosition()`	Seeks to the default position associated with the current `MediaItem`.
`void`	`seekToDefaultPosition(int mediaItemIndex)`	Seeks to the default position associated with the specified `MediaItem`.
`void`	`seekToNext()`	Seeks to a later position in the current or next `MediaItem` (if available).
`void`	`seekToNextMediaItem()`	Seeks to the default position of the next `MediaItem`, which may depend on the current repeat mode and whether shuffle mode is enabled.
`void`	`seekToNextWindow()`	Deprecated. Use `seekToNextMediaItem()` instead.
`void`	`seekToPrevious()`	Seeks to an earlier position in the current or previous `MediaItem` (if available).
`void`	`seekToPreviousMediaItem()`	Seeks to the default position of the previous `MediaItem`, which may depend on the current repeat mode and whether shuffle mode is enabled.
`void`	`seekToPreviousWindow()`	Deprecated. Use `seekToPreviousMediaItem()` instead.
`void`	`setDeviceMuted(boolean muted)`	Sets the mute state of the device.
`void`	`setDeviceVolume(int volume)`	Sets the volume of the device.
`void`	`setMediaItem(MediaItem mediaItem)`	Clears the playlist, adds the specified `MediaItem` and resets the position to the default position.
`void`	`setMediaItem(MediaItem mediaItem, boolean resetPosition)`	Clears the playlist and adds the specified `MediaItem`.
`void`	`setMediaItem(MediaItem mediaItem, long startPositionMs)`	Clears the playlist and adds the specified `MediaItem`.
`void`	`setMediaItems(List<MediaItem> mediaItems)`	Clears the playlist, adds the specified media items and resets the position to the default position.
`void`	`setMediaItems(List<MediaItem> mediaItems, boolean resetPosition)`	Clears the playlist and adds the specified media items.
`void`	`setMediaItems(List<MediaItem> mediaItems, int startIndex, long startPositionMs)`	Clears the playlist and adds the specified media items.
`void`	`setPlaybackParameters(PlaybackParameters playbackParameters)`	Attempts to set the playback parameters.
`void`	`setPlaybackSpeed(float speed)`	Changes the rate at which playback occurs.
`void`	`setPlaylistMetadata(MediaMetadata mediaMetadata)`	Sets the playlist `MediaMetadata`.
`void`	`setPlayWhenReady(boolean playWhenReady)`	Sets whether playback should proceed when `getPlaybackState()` == `STATE_READY`.
`void`	`setRepeatMode(@com.google.android.exoplayer2.Player.RepeatMode int repeatMode)`	Sets the `Player.RepeatMode` to be used for playback.
`void`	`setShuffleModeEnabled(boolean shuffleModeEnabled)`	Sets whether shuffling of media items is enabled.
`void`	`setTrackSelectionParameters(TrackSelectionParameters parameters)`	Sets the parameters constraining the track selection.
`void`	`setVideoSurface(Surface surface)`	Sets the `Surface` onto which video will be rendered.
`void`	`setVideoSurfaceHolder(SurfaceHolder surfaceHolder)`	Sets the `SurfaceHolder` that holds the `Surface` onto which video will be rendered.
`void`	`setVideoSurfaceView(SurfaceView surfaceView)`	Sets the `SurfaceView` onto which video will be rendered.
`void`	`setVideoTextureView(TextureView textureView)`	Sets the `TextureView` onto which video will be rendered.
`void`	`setVolume(float volume)`	Sets the audio volume, valid values are between 0 (silence) and 1 (unity gain, signal unchanged), inclusive.
`void`	`stop()`	Stops playback without resetting the playlist.
`void`	`stop(boolean reset)`	Deprecated. Use `stop()` and `clearMediaItems()` (if `reset` is true) or just `stop()` (if `reset` is false).

- Field Detail
  - STATE_IDLE
```
static final int STATE_IDLE
```
    The player is idle, meaning it holds only limited resources. The player must be prepared before it will play the media.
    
    See Also:
    
    Constant Field Values
  - STATE_BUFFERING
```
static final int STATE_BUFFERING
```
    The player is not able to immediately play the media, but is doing work toward being able to do so. This state typically occurs when the player needs to buffer more data before playback can start.
    
    See Also:
    
    Constant Field Values
  - STATE_READY
```
static final int STATE_READY
```
    The player is able to immediately play from its current position. The player will be playing if getPlayWhenReady() is true, and paused otherwise.
    
    See Also:
    
    Constant Field Values
  - STATE_ENDED
```
static final int STATE_ENDED
```
    The player has finished playing the media.
    
    See Also:
    
    Constant Field Values
  - PLAY_WHEN_READY_CHANGE_REASON_USER_REQUEST
```
static final int PLAY_WHEN_READY_CHANGE_REASON_USER_REQUEST
```
    Playback has been started or paused by a call to setPlayWhenReady(boolean).
    
    See Also:
    
    Constant Field Values
  - PLAY_WHEN_READY_CHANGE_REASON_AUDIO_FOCUS_LOSS
```
static final int PLAY_WHEN_READY_CHANGE_REASON_AUDIO_FOCUS_LOSS
```
    Playback has been paused because of a loss of audio focus.
    
    See Also:
    
    Constant Field Values
  - PLAY_WHEN_READY_CHANGE_REASON_AUDIO_BECOMING_NOISY
```
static final int PLAY_WHEN_READY_CHANGE_REASON_AUDIO_BECOMING_NOISY
```
    Playback has been paused to avoid becoming noisy.
    
    See Also:
    
    Constant Field Values
  - PLAY_WHEN_READY_CHANGE_REASON_REMOTE
```
static final int PLAY_WHEN_READY_CHANGE_REASON_REMOTE
```
    Playback has been started or paused because of a remote change.
    
    See Also:
    
    Constant Field Values
  - PLAY_WHEN_READY_CHANGE_REASON_END_OF_MEDIA_ITEM
```
static final int PLAY_WHEN_READY_CHANGE_REASON_END_OF_MEDIA_ITEM
```
    Playback has been paused at the end of a media item.
    
    See Also:
    
    Constant Field Values
  - PLAYBACK_SUPPRESSION_REASON_NONE
```
static final int PLAYBACK_SUPPRESSION_REASON_NONE
```
    Playback is not suppressed.
    
    See Also:
    
    Constant Field Values
  - PLAYBACK_SUPPRESSION_REASON_TRANSIENT_AUDIO_FOCUS_LOSS
```
static final int PLAYBACK_SUPPRESSION_REASON_TRANSIENT_AUDIO_FOCUS_LOSS
```
    Playback is suppressed due to transient audio focus loss.
    
    See Also:
    
    Constant Field Values
  - REPEAT_MODE_OFF
```
static final int REPEAT_MODE_OFF
```
    Normal playback without repetition. "Previous" and "Next" actions move to the previous and next MediaItem respectively, and do nothing when there is no previous or next MediaItem to move to.
    
    See Also:
    
    Constant Field Values
  - REPEAT_MODE_ONE
```
static final int REPEAT_MODE_ONE
```
    Repeats the currently playing MediaItem infinitely during ongoing playback. "Previous" and "Next" actions behave as they do in REPEAT_MODE_OFF, moving to the previous and next MediaItem respectively, and doing nothing when there is no previous or next MediaItem to move to.
    
    See Also:
    
    Constant Field Values
  - REPEAT_MODE_ALL
```
static final int REPEAT_MODE_ALL
```
    Repeats the entire timeline infinitely. "Previous" and "Next" actions behave as they do in REPEAT_MODE_OFF, but with looping at the ends so that "Previous" when playing the first MediaItem will move to the last MediaItem, and "Next" when playing the last MediaItem will move to the first MediaItem.
    
    See Also:
    
    Constant Field Values
  - DISCONTINUITY_REASON_AUTO_TRANSITION
```
static final int DISCONTINUITY_REASON_AUTO_TRANSITION
```
    Automatic playback transition from one period in the timeline to the next. The period index may be the same as it was before the discontinuity in case the current period is repeated.
    This reason also indicates an automatic transition from the content period to an inserted ad period or vice versa. Or a transition caused by another player (e.g. multiple controllers can control the same playback on a remote device).
    
    See Also:
    
    Constant Field Values
  - DISCONTINUITY_REASON_SEEK
```
static final int DISCONTINUITY_REASON_SEEK
```
    Seek within the current period or to another period.
    
    See Also:
    
    Constant Field Values
  - DISCONTINUITY_REASON_SEEK_ADJUSTMENT
```
static final int DISCONTINUITY_REASON_SEEK_ADJUSTMENT
```
    Seek adjustment due to being unable to seek to the requested position or because the seek was permitted to be inexact.
    
    See Also:
    
    Constant Field Values
  - DISCONTINUITY_REASON_SKIP
```
static final int DISCONTINUITY_REASON_SKIP
```
    Discontinuity introduced by a skipped period (for instance a skipped ad).
    
    See Also:
    
    Constant Field Values
  - DISCONTINUITY_REASON_REMOVE
```
static final int DISCONTINUITY_REASON_REMOVE
```
    Discontinuity caused by the removal of the current period from the Timeline.
    
    See Also:
    
    Constant Field Values
  - DISCONTINUITY_REASON_INTERNAL
```
static final int DISCONTINUITY_REASON_INTERNAL
```
    Discontinuity introduced internally (e.g. by the source).
    
    See Also:
    
    Constant Field Values
  - TIMELINE_CHANGE_REASON_PLAYLIST_CHANGED
```
static final int TIMELINE_CHANGE_REASON_PLAYLIST_CHANGED
```
    Timeline changed as a result of a change of the playlist items or the order of the items.
    
    See Also:
    
    Constant Field Values
  - TIMELINE_CHANGE_REASON_SOURCE_UPDATE
```
static final int TIMELINE_CHANGE_REASON_SOURCE_UPDATE
```
    Timeline changed as a result of a source update (e.g. result of a dynamic update by the played media).
    This reason also indicates a change caused by another player (e.g. multiple controllers can control the same playback on the remote device).
    
    See Also:
    
    Constant Field Values
  - MEDIA_ITEM_TRANSITION_REASON_REPEAT
```
static final int MEDIA_ITEM_TRANSITION_REASON_REPEAT
```
    The media item has been repeated.
    
    See Also:
    
    Constant Field Values
  - MEDIA_ITEM_TRANSITION_REASON_AUTO
```
static final int MEDIA_ITEM_TRANSITION_REASON_AUTO
```
    Playback has automatically transitioned to the next media item.
    This reason also indicates a transition caused by another player (e.g. multiple controllers can control the same playback on a remote device).
    
    See Also:
    
    Constant Field Values
  - MEDIA_ITEM_TRANSITION_REASON_SEEK
```
static final int MEDIA_ITEM_TRANSITION_REASON_SEEK
```
    A seek to another media item has occurred.
    
    See Also:
    
    Constant Field Values
  - MEDIA_ITEM_TRANSITION_REASON_PLAYLIST_CHANGED
```
static final int MEDIA_ITEM_TRANSITION_REASON_PLAYLIST_CHANGED
```
    The current media item has changed because of a change in the playlist. This can either be if the media item previously being played has been removed, or when the playlist becomes non-empty after being empty.
    
    See Also:
    
    Constant Field Values
  - EVENT_TIMELINE_CHANGED
```
static final int EVENT_TIMELINE_CHANGED
```
    getCurrentTimeline() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_MEDIA_ITEM_TRANSITION
```
static final int EVENT_MEDIA_ITEM_TRANSITION
```
    getCurrentMediaItem() changed or the player started repeating the current item.
    
    See Also:
    
    Constant Field Values
  - EVENT_TRACKS_CHANGED
```
static final int EVENT_TRACKS_CHANGED
```
    getCurrentTracks() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_IS_LOADING_CHANGED
```
static final int EVENT_IS_LOADING_CHANGED
```
    isLoading() ()} changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_PLAYBACK_STATE_CHANGED
```
static final int EVENT_PLAYBACK_STATE_CHANGED
```
    getPlaybackState() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_PLAY_WHEN_READY_CHANGED
```
static final int EVENT_PLAY_WHEN_READY_CHANGED
```
    getPlayWhenReady() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_PLAYBACK_SUPPRESSION_REASON_CHANGED
```
static final int EVENT_PLAYBACK_SUPPRESSION_REASON_CHANGED
```
    getPlaybackSuppressionReason() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_IS_PLAYING_CHANGED
```
static final int EVENT_IS_PLAYING_CHANGED
```
    isPlaying() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_REPEAT_MODE_CHANGED
```
static final int EVENT_REPEAT_MODE_CHANGED
```
    getRepeatMode() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_SHUFFLE_MODE_ENABLED_CHANGED
```
static final int EVENT_SHUFFLE_MODE_ENABLED_CHANGED
```
    getShuffleModeEnabled() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_PLAYER_ERROR
```
static final int EVENT_PLAYER_ERROR
```
    getPlayerError() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_POSITION_DISCONTINUITY
```
static final int EVENT_POSITION_DISCONTINUITY
```
    A position discontinuity occurred. See Player.Listener.onPositionDiscontinuity(PositionInfo, PositionInfo, int).
    
    See Also:
    
    Constant Field Values
  - EVENT_PLAYBACK_PARAMETERS_CHANGED
```
static final int EVENT_PLAYBACK_PARAMETERS_CHANGED
```
    getPlaybackParameters() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_AVAILABLE_COMMANDS_CHANGED
```
static final int EVENT_AVAILABLE_COMMANDS_CHANGED
```
    isCommandAvailable(int) changed for at least one Player.Command.
    
    See Also:
    
    Constant Field Values
  - EVENT_MEDIA_METADATA_CHANGED
```
static final int EVENT_MEDIA_METADATA_CHANGED
```
    getMediaMetadata() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_PLAYLIST_METADATA_CHANGED
```
static final int EVENT_PLAYLIST_METADATA_CHANGED
```
    getPlaylistMetadata() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_SEEK_BACK_INCREMENT_CHANGED
```
static final int EVENT_SEEK_BACK_INCREMENT_CHANGED
```
    getSeekBackIncrement() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_SEEK_FORWARD_INCREMENT_CHANGED
```
static final int EVENT_SEEK_FORWARD_INCREMENT_CHANGED
```
    getSeekForwardIncrement() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_MAX_SEEK_TO_PREVIOUS_POSITION_CHANGED
```
static final int EVENT_MAX_SEEK_TO_PREVIOUS_POSITION_CHANGED
```
    getMaxSeekToPreviousPosition() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_TRACK_SELECTION_PARAMETERS_CHANGED
```
static final int EVENT_TRACK_SELECTION_PARAMETERS_CHANGED
```
    getTrackSelectionParameters() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_AUDIO_ATTRIBUTES_CHANGED
```
static final int EVENT_AUDIO_ATTRIBUTES_CHANGED
```
    getAudioAttributes() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_AUDIO_SESSION_ID
```
static final int EVENT_AUDIO_SESSION_ID
```
    The audio session id was set.
    
    See Also:
    
    Constant Field Values
  - EVENT_VOLUME_CHANGED
```
static final int EVENT_VOLUME_CHANGED
```
    getVolume() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_SKIP_SILENCE_ENABLED_CHANGED
```
static final int EVENT_SKIP_SILENCE_ENABLED_CHANGED
```
    Skipping silences in the audio stream is enabled or disabled.
    
    See Also:
    
    Constant Field Values
  - EVENT_SURFACE_SIZE_CHANGED
```
static final int EVENT_SURFACE_SIZE_CHANGED
```
    The size of the surface onto which the video is being rendered changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_VIDEO_SIZE_CHANGED
```
static final int EVENT_VIDEO_SIZE_CHANGED
```
    getVideoSize() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_RENDERED_FIRST_FRAME
```
static final int EVENT_RENDERED_FIRST_FRAME
```
    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.
    
    See Also:
    
    Constant Field Values
  - EVENT_CUES
```
static final int EVENT_CUES
```
    getCurrentCues() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_METADATA
```
static final int EVENT_METADATA
```
    Metadata associated with the current playback time changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_DEVICE_INFO_CHANGED
```
static final int EVENT_DEVICE_INFO_CHANGED
```
    getDeviceInfo() changed.
    
    See Also:
    
    Constant Field Values
  - EVENT_DEVICE_VOLUME_CHANGED
```
static final int EVENT_DEVICE_VOLUME_CHANGED
```
    getDeviceVolume() changed.
    
    See Also:
    
    Constant Field Values
  - COMMAND_PLAY_PAUSE
```
static final int COMMAND_PLAY_PAUSE
```
    Command to start, pause or resume playback.
    The following methods must only be called if this command is available:
    
    play()
    pause()
    setPlayWhenReady(boolean)
    See Also:
    
    Constant Field Values
  - COMMAND_PREPARE
```
static final int COMMAND_PREPARE
```
    Command to prepare the player.
    The prepare() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_STOP
```
static final int COMMAND_STOP
```
    Command to stop playback.
    The stop() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_TO_DEFAULT_POSITION
```
static final int COMMAND_SEEK_TO_DEFAULT_POSITION
```
    Command to seek to the default position of the current MediaItem.
    The seekToDefaultPosition() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM
```
static final int COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM
```
    Command to seek anywhere inside the current MediaItem.
    The seekTo(long) method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_IN_CURRENT_WINDOW
```
@Deprecated
static final int COMMAND_SEEK_IN_CURRENT_WINDOW
```
    Deprecated.
    Use COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM instead.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM
```
static final int COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM
```
    Command to seek to the default position of the previous MediaItem.
    The seekToPreviousMediaItem() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_TO_PREVIOUS_WINDOW
```
@Deprecated
static final int COMMAND_SEEK_TO_PREVIOUS_WINDOW
```
    Deprecated.
    Use COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM instead.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_TO_PREVIOUS
```
static final int COMMAND_SEEK_TO_PREVIOUS
```
    Command to seek to an earlier position in the current MediaItem or the default position of the previous MediaItem.
    The seekToPrevious() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_TO_NEXT_MEDIA_ITEM
```
static final int COMMAND_SEEK_TO_NEXT_MEDIA_ITEM
```
    Command to seek to the default position of the next MediaItem.
    The seekToNextMediaItem() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_TO_NEXT_WINDOW
```
@Deprecated
static final int COMMAND_SEEK_TO_NEXT_WINDOW
```
    Deprecated.
    Use COMMAND_SEEK_TO_NEXT_MEDIA_ITEM instead.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_TO_NEXT
```
static final int COMMAND_SEEK_TO_NEXT
```
    Command to seek to a later position in the current MediaItem or the default position of the next MediaItem.
    The seekToNext() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_TO_MEDIA_ITEM
```
static final int COMMAND_SEEK_TO_MEDIA_ITEM
```
    Command to seek anywhere in any MediaItem.
    The following methods must only be called if this command is available:
    
    seekTo(int, long)
    seekToDefaultPosition(int)
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_TO_WINDOW
```
@Deprecated
static final int COMMAND_SEEK_TO_WINDOW
```
    Deprecated.
    Use COMMAND_SEEK_TO_MEDIA_ITEM instead.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_BACK
```
static final int COMMAND_SEEK_BACK
```
    Command to seek back by a fixed increment inside the current MediaItem.
    The seekBack() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SEEK_FORWARD
```
static final int COMMAND_SEEK_FORWARD
```
    Command to seek forward by a fixed increment inside the current MediaItem.
    The seekForward() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SET_SPEED_AND_PITCH
```
static final int COMMAND_SET_SPEED_AND_PITCH
```
    Command to set the playback speed and pitch.
    The following methods must only be called if this command is available:
    
    setPlaybackParameters(PlaybackParameters)
    setPlaybackSpeed(float)
    See Also:
    
    Constant Field Values
  - COMMAND_SET_SHUFFLE_MODE
```
static final int COMMAND_SET_SHUFFLE_MODE
```
    Command to enable shuffling.
    The setShuffleModeEnabled(boolean) method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SET_REPEAT_MODE
```
static final int COMMAND_SET_REPEAT_MODE
```
    Command to set the repeat mode.
    The setRepeatMode(int) method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_GET_CURRENT_MEDIA_ITEM
```
static final int COMMAND_GET_CURRENT_MEDIA_ITEM
```
    Command to get information about the currently playing MediaItem.
    The following methods must only be called if this command is available:
    
    getCurrentMediaItem()
    isCurrentMediaItemDynamic()
    isCurrentMediaItemLive()
    isCurrentMediaItemSeekable()
    getCurrentLiveOffset()
    getDuration()
    getCurrentPosition()
    getBufferedPosition()
    getContentDuration()
    getContentPosition()
    getContentBufferedPosition()
    getTotalBufferedDuration()
    isPlayingAd()
    getCurrentAdGroupIndex()
    getCurrentAdIndexInAdGroup()
    See Also:
    
    Constant Field Values
  - COMMAND_GET_TIMELINE
```
static final int COMMAND_GET_TIMELINE
```
    Command to get the information about the current timeline.
    The following methods must only be called if this command is available:
    
    getCurrentTimeline()
    getCurrentMediaItemIndex()
    getCurrentPeriodIndex()
    getMediaItemCount()
    getMediaItemAt(int)
    getNextMediaItemIndex()
    getPreviousMediaItemIndex()
    hasPreviousMediaItem()
    hasNextMediaItem()
    See Also:
    
    Constant Field Values
  - COMMAND_GET_MEDIA_ITEMS_METADATA
```
static final int COMMAND_GET_MEDIA_ITEMS_METADATA
```
    Command to get metadata related to the playlist and current MediaItem.
    The following methods must only be called if this command is available:
    
    getMediaMetadata()
    getPlaylistMetadata()
    See Also:
    
    Constant Field Values
  - COMMAND_SET_MEDIA_ITEMS_METADATA
```
static final int COMMAND_SET_MEDIA_ITEMS_METADATA
```
    Command to set the playlist metadata.
    The setPlaylistMetadata(MediaMetadata) method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SET_MEDIA_ITEM
```
static final int COMMAND_SET_MEDIA_ITEM
```
    Command to set a MediaItem.
    The following methods must only be called if this command is available:
    
    setMediaItem(MediaItem)
    setMediaItem(MediaItem, boolean)
    setMediaItem(MediaItem, long)
    See Also:
    
    Constant Field Values
  - COMMAND_CHANGE_MEDIA_ITEMS
```
static final int COMMAND_CHANGE_MEDIA_ITEMS
```
    Command to change the media items in the playlist.
    The following methods must only be called if this command is available:
    
    addMediaItem(MediaItem)
    addMediaItem(int, MediaItem)
    addMediaItems(List)
    addMediaItems(int, List)
    clearMediaItems()
    moveMediaItem(int, int)
    moveMediaItems(int, int, int)
    removeMediaItem(int)
    removeMediaItems(int, int)
    setMediaItems(List)
    setMediaItems(List, boolean)
    setMediaItems(List, int, long)
    See Also:
    
    Constant Field Values
  - COMMAND_GET_AUDIO_ATTRIBUTES
```
static final int COMMAND_GET_AUDIO_ATTRIBUTES
```
    Command to get the player current AudioAttributes.
    The getAudioAttributes() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_GET_VOLUME
```
static final int COMMAND_GET_VOLUME
```
    Command to get the player volume.
    The getVolume() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_GET_DEVICE_VOLUME
```
static final int COMMAND_GET_DEVICE_VOLUME
```
    Command to get the device volume and whether it is muted.
    The following methods must only be called if this command is available:
    
    getDeviceVolume()
    isDeviceMuted()
    See Also:
    
    Constant Field Values
  - COMMAND_SET_VOLUME
```
static final int COMMAND_SET_VOLUME
```
    Command to set the player volume.
    The setVolume(float) method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SET_DEVICE_VOLUME
```
static final int COMMAND_SET_DEVICE_VOLUME
```
    Command to set the device volume.
    The setDeviceVolume(int) method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_ADJUST_DEVICE_VOLUME
```
static final int COMMAND_ADJUST_DEVICE_VOLUME
```
    Command to increase and decrease the device volume and mute it.
    The following methods must only be called if this command is available:
    
    increaseDeviceVolume()
    decreaseDeviceVolume()
    setDeviceMuted(boolean)
    See Also:
    
    Constant Field Values
  - COMMAND_SET_VIDEO_SURFACE
```
static final int COMMAND_SET_VIDEO_SURFACE
```
    Command to set and clear the surface on which to render the video.
    The following methods must only be called if this command is available:
    
    setVideoSurface(Surface)
    clearVideoSurface()
    clearVideoSurface(Surface)
    setVideoSurfaceHolder(SurfaceHolder)
    clearVideoSurfaceHolder(SurfaceHolder)
    setVideoSurfaceView(SurfaceView)
    clearVideoSurfaceView(SurfaceView)
    See Also:
    
    Constant Field Values
  - COMMAND_GET_TEXT
```
static final int COMMAND_GET_TEXT
```
    Command to get the text that should currently be displayed by the player.
    The getCurrentCues() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_SET_TRACK_SELECTION_PARAMETERS
```
static final int COMMAND_SET_TRACK_SELECTION_PARAMETERS
```
    Command to set the player's track selection parameters.
    The setTrackSelectionParameters(TrackSelectionParameters) method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_GET_TRACKS
```
static final int COMMAND_GET_TRACKS
```
    Command to get details of the current track selection.
    The getCurrentTracks() method must only be called if this command is available.
    
    See Also:
    
    Constant Field Values
  - COMMAND_INVALID
```
static final int COMMAND_INVALID
```
    Represents an invalid Player.Command.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - getApplicationLooper
```
Looper getApplicationLooper()
```
    Returns the Looper associated with the application thread that's used to access the player and on which player events are received.
    This method can be called from any thread.
  - addListener
```
void addListener(Player.Listener listener)
```
    Registers a listener to receive all events from the player.
    The listener's methods will be called on the thread associated with getApplicationLooper().
    This method can be called from any thread.
    
    Parameters:
    
    listener - The listener to register.
  - removeListener
```
void removeListener(Player.Listener listener)
```
    Unregister a listener registered through addListener(Listener). The listener will no longer receive events.
    
    Parameters:
    
    listener - The listener to unregister.
  - setMediaItems
```
void setMediaItems(List<MediaItem> mediaItems)
```
    Clears the playlist, adds the specified media items and resets the position to the default position.
    This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.
    
    Parameters:
    
    mediaItems - The new media items.
  - setMediaItems
```
void setMediaItems(List<MediaItem> mediaItems,
                   boolean resetPosition)
```
    Clears the playlist and adds the specified media items.
    This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.
    
    Parameters:
    
    mediaItems - The new media items.
    
    resetPosition - Whether the playback position should be reset to the default position in the first Timeline.Window. If false, playback will start from the position defined by getCurrentMediaItemIndex() and getCurrentPosition().
  - setMediaItems
```
void setMediaItems(List<MediaItem> mediaItems,
                   int startIndex,
                   long startPositionMs)
```
    Clears the playlist and adds the specified media items.
    This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.
    
    Parameters:
    
    mediaItems - The new media items.
    
    startIndex - The MediaItem index to start playback from. If C.INDEX_UNSET is passed, the current position is not reset.
    
    startPositionMs - The position in milliseconds to start playback from. If C.TIME_UNSET is passed, the default position of the given MediaItem is used. In any case, if startIndex is set to C.INDEX_UNSET, this parameter is ignored and the position is not reset at all.
    
    Throws:
    
    IllegalSeekPositionException - If the provided startIndex is not within the bounds of the list of media items.
  - setMediaItem
```
void setMediaItem(MediaItem mediaItem)
```
    Clears the playlist, adds the specified MediaItem and resets the position to the default position.
    This method must only be called if COMMAND_SET_MEDIA_ITEM is available.
    
    Parameters:
    
    mediaItem - The new MediaItem.
  - setMediaItem
```
void setMediaItem(MediaItem mediaItem,
                  long startPositionMs)
```
    Clears the playlist and adds the specified MediaItem.
    This method must only be called if COMMAND_SET_MEDIA_ITEM is available.
    
    Parameters:
    
    mediaItem - The new MediaItem.
    
    startPositionMs - The position in milliseconds to start playback from.
  - setMediaItem
```
void setMediaItem(MediaItem mediaItem,
                  boolean resetPosition)
```
    Clears the playlist and adds the specified MediaItem.
    This method must only be called if COMMAND_SET_MEDIA_ITEM is available.
    
    Parameters:
    
    mediaItem - The new MediaItem.
    
    resetPosition - Whether the playback position should be reset to the default position. If false, playback will start from the position defined by getCurrentMediaItemIndex() and getCurrentPosition().
  - addMediaItem
```
void addMediaItem(MediaItem mediaItem)
```
    Adds a media item to the end of the playlist.
    This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.
    
    Parameters:
    
    mediaItem - The MediaItem to add.
  - addMediaItem
```
void addMediaItem(int index,
                  MediaItem mediaItem)
```
    Adds a media item at the given index of the playlist.
    This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.
    
    Parameters:
    
    index - The index at which to add the media item. If the index is larger than the size of the playlist, the media item is added to the end of the playlist.
    
    mediaItem - The MediaItem to add.
  - addMediaItems
```
void addMediaItems(List<MediaItem> mediaItems)
```
    Adds a list of media items to the end of the playlist.
    This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.
    
    Parameters:
    
    mediaItems - The media items to add.
  - addMediaItems
```
void addMediaItems(int index,
                   List<MediaItem> mediaItems)
```
    Adds a list of media items at the given index of the playlist.
    This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.
    
    Parameters:
    
    index - The index at which to add the media items. If the index is larger than the size of the playlist, the media items are added to the end of the playlist.
    
    mediaItems - The media items to add.
  - moveMediaItem
```
void moveMediaItem(int currentIndex,
                   int newIndex)
```
    Moves the media item at the current index to the new index.
    This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.
    
    Parameters:
    
    currentIndex - The current index of the media item to move. If the index is larger than the size of the playlist, the request is ignored.
    
    newIndex - The new index of the media item. If the new index is larger than the size of the playlist the item is moved to the end of the playlist.
  - moveMediaItems
```
void moveMediaItems(int fromIndex,
                    int toIndex,
                    int newIndex)
```
    Moves the media item range to the new index.
    This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.
    
    Parameters:
    
    fromIndex - The start of the range to move. If the index is larger than the size of the playlist, the request is ignored.
    
    toIndex - The first item not to be included in the range (exclusive). If the index is larger than the size of the playlist, items up to the end of the playlist are moved.
    
    newIndex - The new index of the first media item of the range. If the new index is larger than the size of the remaining playlist after removing the range, the range is moved to the end of the playlist.
  - removeMediaItem
```
void removeMediaItem(int index)
```
    Removes the media item at the given index of the playlist.
    This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.
    
    Parameters:
    
    index - The index at which to remove the media item. If the index is larger than the size of the playlist, the request is ignored.
  - removeMediaItems
```
void removeMediaItems(int fromIndex,
                      int toIndex)
```
    Removes a range of media items from the playlist.
    This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.
    
    Parameters:
    
    fromIndex - The index at which to start removing media items. If the index is larger than the size of the playlist, the request is ignored.
    
    toIndex - The index of the first item to be kept (exclusive). If the index is larger than the size of the playlist, media items up to the end of the playlist are removed.
  - clearMediaItems
```
void clearMediaItems()
```
    Clears the playlist.
    This method must only be called if COMMAND_CHANGE_MEDIA_ITEMS is available.
  - isCommandAvailable
```
boolean isCommandAvailable(@Command
                           @com.google.android.exoplayer2.Player.Command int command)
```
    Returns whether the provided Player.Command is available.
    This method does not execute the command.
    
    Parameters:
    
    command - A Player.Command.
    
    Returns:
    
    Whether the Player.Command is available.
    
    See Also:
    
    Player.Listener.onAvailableCommandsChanged(Commands)
  - canAdvertiseSession
```
boolean canAdvertiseSession()
```
    Returns whether the player can be used to advertise a media session.
  - getAvailableCommands
```
Player.Commands getAvailableCommands()
```
    Returns the player's currently available Player.Commands.
    The returned Player.Commands are not updated when available commands change. Use Player.Listener.onAvailableCommandsChanged(Commands) to get an update when the available commands change.
    
    Returns:
    
    The currently available Player.Commands.
    
    See Also:
    
    Player.Listener.onAvailableCommandsChanged(com.google.android.exoplayer2.Player.Commands)
  - prepare
```
void prepare()
```
    Prepares the player.
    This method must only be called if COMMAND_PREPARE is available.
    This will move the player out of idle state and the player will start loading media and acquire resources needed for playback.
  - getPlaybackState
```
@State
@com.google.android.exoplayer2.Player.State int getPlaybackState()
```
    Returns the current playback state of the player.
    
    Returns:
    
    The current playback state.
    
    See Also:
    
    Player.Listener.onPlaybackStateChanged(int)
  - getPlaybackSuppressionReason
```
@PlaybackSuppressionReason
@com.google.android.exoplayer2.Player.PlaybackSuppressionReason int getPlaybackSuppressionReason()
```
    Returns the reason why playback is suppressed even though getPlayWhenReady() is true, or PLAYBACK_SUPPRESSION_REASON_NONE if playback is not suppressed.
    
    Returns:
    
    The current Player.PlaybackSuppressionReason.
    
    See Also:
    
    Player.Listener.onPlaybackSuppressionReasonChanged(int)
  - isPlaying
```
boolean isPlaying()
```
    Returns whether the player is playing, i.e. getCurrentPosition() is advancing.
    If false, then at least one of the following is true:
    
    The playback state is not ready.
    There is no intention to play.
    Playback is suppressed for other reasons.
    Returns:
    
    Whether the player is playing.
    
    See Also:
    
    Player.Listener.onIsPlayingChanged(boolean)
  - getPlayerError
```
@Nullable
PlaybackException getPlayerError()
```
    Returns the error that caused playback to fail. This is the same error that will have been reported via Player.Listener.onPlayerError(PlaybackException) at the time of failure. It can be queried using this method until the player is re-prepared.
    Note that this method will always return null if getPlaybackState() is not STATE_IDLE.
    
    Returns:
    
    The error, or null.
    
    See Also:
    
    Player.Listener.onPlayerError(PlaybackException)
  - play
```
void play()
```
    Resumes playback as soon as getPlaybackState() == STATE_READY. Equivalent to setPlayWhenReady(true).
    This method must only be called if COMMAND_PLAY_PAUSE is available.
  - pause
```
void pause()
```
    Pauses playback. Equivalent to setPlayWhenReady(false).
    This method must only be called if COMMAND_PLAY_PAUSE is available.
  - setPlayWhenReady
```
void setPlayWhenReady(boolean playWhenReady)
```
    Sets whether playback should proceed when getPlaybackState() == STATE_READY.
    If the player is already in the ready state then this method pauses and resumes playback.
    This method must only be called if COMMAND_PLAY_PAUSE is available.
    
    Parameters:
    
    playWhenReady - Whether playback should proceed when ready.
  - getPlayWhenReady
```
boolean getPlayWhenReady()
```
    Whether playback will proceed when getPlaybackState() == STATE_READY.
    
    Returns:
    
    Whether playback will proceed when ready.
    
    See Also:
    
    Player.Listener.onPlayWhenReadyChanged(boolean, int)
  - setRepeatMode
```
void setRepeatMode(@RepeatMode
                   @com.google.android.exoplayer2.Player.RepeatMode int repeatMode)
```
    Sets the Player.RepeatMode to be used for playback.
    This method must only be called if COMMAND_SET_REPEAT_MODE is available.
    
    Parameters:
    
    repeatMode - The repeat mode.
  - getRepeatMode
```
@RepeatMode
@com.google.android.exoplayer2.Player.RepeatMode int getRepeatMode()
```
    Returns the current Player.RepeatMode used for playback.
    
    Returns:
    
    The current repeat mode.
    
    See Also:
    
    Player.Listener.onRepeatModeChanged(int)
  - setShuffleModeEnabled
```
void setShuffleModeEnabled(boolean shuffleModeEnabled)
```
    Sets whether shuffling of media items is enabled.
    This method must only be called if COMMAND_SET_SHUFFLE_MODE is available.
    
    Parameters:
    
    shuffleModeEnabled - Whether shuffling is enabled.
  - getShuffleModeEnabled
```
boolean getShuffleModeEnabled()
```
    Returns whether shuffling of media items is enabled.
    
    See Also:
    
    Player.Listener.onShuffleModeEnabledChanged(boolean)
  - isLoading
```
boolean isLoading()
```
    Whether the player is currently loading the source.
    
    Returns:
    
    Whether the player is currently loading the source.
    
    See Also:
    
    Player.Listener.onIsLoadingChanged(boolean)
  - seekToDefaultPosition
```
void seekToDefaultPosition()
```
    Seeks to the default position associated with the current MediaItem. The position can depend on the type of media being played. For live streams it will typically be the live edge. For other streams it will typically be the start.
    This method must only be called if COMMAND_SEEK_TO_DEFAULT_POSITION is available.
  - seekToDefaultPosition
```
void seekToDefaultPosition(int mediaItemIndex)
```
    Seeks to the default position associated with the specified MediaItem. The position can depend on the type of media being played. For live streams it will typically be the live edge. For other streams it will typically be the start.
    This method must only be called if COMMAND_SEEK_TO_MEDIA_ITEM is available.
    
    Parameters:
    
    mediaItemIndex - The index of the MediaItem whose associated default position should be seeked to. If the index is larger than the size of the playlist, the request is ignored.
  - seekTo
```
void seekTo(long positionMs)
```
    Seeks to a position specified in milliseconds in the current MediaItem.
    This method must only be called if COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM is available.
    
    Parameters:
    
    positionMs - The seek position in the current MediaItem, or C.TIME_UNSET to seek to the media item's default position.
  - seekTo
```
void seekTo(int mediaItemIndex,
            long positionMs)
```
    Seeks to a position specified in milliseconds in the specified MediaItem.
    This method must only be called if COMMAND_SEEK_TO_MEDIA_ITEM is available.
    
    Parameters:
    
    mediaItemIndex - The index of the MediaItem. If the index is larger than the size of the playlist, the request is ignored.
    
    positionMs - The seek position in the specified MediaItem, or C.TIME_UNSET to seek to the media item's default position.
  - getSeekBackIncrement
```
long getSeekBackIncrement()
```
    Returns the seekBack() increment.
    
    Returns:
    
    The seek back increment, in milliseconds.
    
    See Also:
    
    Player.Listener.onSeekBackIncrementChanged(long)
  - seekBack
```
void seekBack()
```
    Seeks back in the current MediaItem by getSeekBackIncrement() milliseconds.
    This method must only be called if COMMAND_SEEK_BACK is available.
  - getSeekForwardIncrement
```
long getSeekForwardIncrement()
```
    Returns the seekForward() increment.
    
    Returns:
    
    The seek forward increment, in milliseconds.
    
    See Also:
    
    Player.Listener.onSeekForwardIncrementChanged(long)
  - seekForward
```
void seekForward()
```
    Seeks forward in the current MediaItem by getSeekForwardIncrement() milliseconds.
    This method must only be called if COMMAND_SEEK_FORWARD is available.
  - hasPrevious
```
@Deprecated
boolean hasPrevious()
```
    Deprecated.
    Use hasPreviousMediaItem() instead.
  - hasPreviousWindow
```
@Deprecated
boolean hasPreviousWindow()
```
    Deprecated.
    Use hasPreviousMediaItem() instead.
  - hasPreviousMediaItem
```
boolean hasPreviousMediaItem()
```
    Returns whether a previous media item exists, which may depend on the current repeat mode and whether shuffle mode is enabled.
    Note: When the repeat mode is REPEAT_MODE_ONE, this method behaves the same as when the current repeat mode is REPEAT_MODE_OFF. See REPEAT_MODE_ONE for more details.
    This method must only be called if COMMAND_GET_TIMELINE is available.
  - previous
```
@Deprecated
void previous()
```
    Deprecated.
    Use seekToPreviousMediaItem() instead.
  - seekToPreviousWindow
```
@Deprecated
void seekToPreviousWindow()
```
    Deprecated.
    Use seekToPreviousMediaItem() instead.
  - seekToPreviousMediaItem
```
void seekToPreviousMediaItem()
```
    Seeks to the default position of the previous MediaItem, which may depend on the current repeat mode and whether shuffle mode is enabled. Does nothing if hasPreviousMediaItem() is false.
    Note: When the repeat mode is REPEAT_MODE_ONE, this method behaves the same as when the current repeat mode is REPEAT_MODE_OFF. See REPEAT_MODE_ONE for more details.
    This method must only be called if COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM is available.
  - getMaxSeekToPreviousPosition
```
long getMaxSeekToPreviousPosition()
```
    Returns the maximum position for which seekToPrevious() seeks to the previous MediaItem, in milliseconds.
    
    Returns:
    
    The maximum seek to previous position, in milliseconds.
    
    See Also:
    
    Player.Listener.onMaxSeekToPreviousPositionChanged(long)
  - seekToPrevious
```
void seekToPrevious()
```
    Seeks to an earlier position in the current or previous MediaItem (if available). More precisely:
    
    If the timeline is empty or seeking is not possible, does nothing.
    Otherwise, if the current MediaItem is isCurrentMediaItemLive() live} and unseekable, then:
    
    If a previous media item exists, seeks to the default position of the previous media item.
    Otherwise, does nothing.
    
    Otherwise, if a previous media item exists and the current position is less than getMaxSeekToPreviousPosition(), seeks to the default position of the previous MediaItem.
    Otherwise, seeks to 0 in the current MediaItem.
    
    This method must only be called if COMMAND_SEEK_TO_PREVIOUS is available.
  - hasNext
```
@Deprecated
boolean hasNext()
```
    Deprecated.
    Use hasNextMediaItem() instead.
  - hasNextWindow
```
@Deprecated
boolean hasNextWindow()
```
    Deprecated.
    Use hasNextMediaItem() instead.
  - hasNextMediaItem
```
boolean hasNextMediaItem()
```
    Returns whether a next MediaItem exists, which may depend on the current repeat mode and whether shuffle mode is enabled.
    Note: When the repeat mode is REPEAT_MODE_ONE, this method behaves the same as when the current repeat mode is REPEAT_MODE_OFF. See REPEAT_MODE_ONE for more details.
    This method must only be called if COMMAND_GET_TIMELINE is available.
  - next
```
@Deprecated
void next()
```
    Deprecated.
    Use seekToNextMediaItem() instead.
  - seekToNextWindow
```
@Deprecated
void seekToNextWindow()
```
    Deprecated.
    Use seekToNextMediaItem() instead.
  - seekToNextMediaItem
```
void seekToNextMediaItem()
```
    Seeks to the default position of the next MediaItem, which may depend on the current repeat mode and whether shuffle mode is enabled. Does nothing if hasNextMediaItem() is false.
    Note: When the repeat mode is REPEAT_MODE_ONE, this method behaves the same as when the current repeat mode is REPEAT_MODE_OFF. See REPEAT_MODE_ONE for more details.
    This method must only be called if COMMAND_SEEK_TO_NEXT_MEDIA_ITEM is available.
  - seekToNext
```
void seekToNext()
```
    Seeks to a later position in the current or next MediaItem (if available). More precisely:
    
    If the timeline is empty or seeking is not possible, does nothing.
    Otherwise, if a next media item exists, seeks to the default position of the next MediaItem.
    Otherwise, if the current MediaItem is live and has not ended, seeks to the live edge of the current MediaItem.
    Otherwise, does nothing.
    
    This method must only be called if COMMAND_SEEK_TO_NEXT is available.
  - setPlaybackParameters
```
void setPlaybackParameters(PlaybackParameters playbackParameters)
```
    Attempts to set the playback parameters. Passing PlaybackParameters.DEFAULT resets the player to the default, which means there is no speed or pitch adjustment.
    Playback parameters changes may cause the player to buffer. Player.Listener.onPlaybackParametersChanged(PlaybackParameters) will be called whenever the currently active playback parameters change.
    This method must only be called if COMMAND_SET_SPEED_AND_PITCH is available.
    
    Parameters:
    
    playbackParameters - The playback parameters.
  - setPlaybackSpeed
```
void setPlaybackSpeed(@FloatRange(from=0.0,fromInclusive=false)
                      float speed)
```
    Changes the rate at which playback occurs. The pitch is not changed.
    This is equivalent to setPlaybackParameters(getPlaybackParameters().withSpeed(speed)).
    This method must only be called if COMMAND_SET_SPEED_AND_PITCH is available.
    
    Parameters:
    
    speed - The linear factor by which playback will be sped up. Must be higher than 0. 1 is normal speed, 2 is twice as fast, 0.5 is half normal speed.
  - getPlaybackParameters
```
PlaybackParameters getPlaybackParameters()
```
    Returns the currently active playback parameters.
    
    See Also:
    
    Player.Listener.onPlaybackParametersChanged(PlaybackParameters)
  - stop
```
void stop()
```
    Stops playback without resetting the playlist. Use pause() rather than this method if the intention is to pause playback.
    Calling this method will cause the playback state to transition to STATE_IDLE and the player will release the loaded media and resources required for playback. The player instance can still be used by calling prepare() again, and release() must still be called on the player if it's no longer required.
    Calling this method does not clear the playlist, reset the playback position or the playback error.
    This method must only be called if COMMAND_STOP is available.
  - stop
```
@Deprecated
void stop(boolean reset)
```
    Deprecated.
    Use stop() and clearMediaItems() (if reset is true) or just stop() (if reset is false). Any player error will be cleared when re-preparing the player.
  - release
```
void release()
```
    Releases the player. This method must be called when the player is no longer required. The player must not be used after calling this method.
  - getCurrentTracks
```
Tracks getCurrentTracks()
```
    Returns the current tracks.
    This method must only be called if COMMAND_GET_TRACKS is available.
    
    See Also:
    
    Player.Listener.onTracksChanged(Tracks)
  - getTrackSelectionParameters
```
TrackSelectionParameters getTrackSelectionParameters()
```
    Returns the parameters constraining the track selection.
    
    See Also:
    
    }
  - setTrackSelectionParameters
```
void setTrackSelectionParameters(TrackSelectionParameters parameters)
```
    Sets the parameters constraining the track selection.
    Unsupported parameters will be silently ignored.
    Use getTrackSelectionParameters() to retrieve the current parameters. For example, the following snippet restricts video to SD whilst keep other track selection parameters unchanged:
    player.setTrackSelectionParameters( player.getTrackSelectionParameters() .buildUpon() .setMaxVideoSizeSd() .build())
    
    This method must only be called if COMMAND_SET_TRACK_SELECTION_PARAMETERS is available.
  - getMediaMetadata
```
MediaMetadata getMediaMetadata()
```
    Returns the current combined MediaMetadata, or MediaMetadata.EMPTY if not supported.
    This MediaMetadata is a combination of the MediaItem metadata, the static metadata in the media's Format, and any timed metadata that has been parsed from the media and output via Player.Listener.onMetadata(Metadata). If a field is populated in the MediaItem.mediaMetadata, it will be prioritised above the same field coming from static or timed metadata.
    This method must only be called if COMMAND_GET_MEDIA_ITEMS_METADATA is available.
  - getPlaylistMetadata
```
MediaMetadata getPlaylistMetadata()
```
    Returns the playlist MediaMetadata, as set by setPlaylistMetadata(MediaMetadata), or MediaMetadata.EMPTY if not supported.
    This method must only be called if COMMAND_GET_MEDIA_ITEMS_METADATA is available.
  - setPlaylistMetadata
```
void setPlaylistMetadata(MediaMetadata mediaMetadata)
```
    Sets the playlist MediaMetadata.
    This method must only be called if COMMAND_SET_MEDIA_ITEMS_METADATA is available.
  - getCurrentManifest
```
@Nullable
Object getCurrentManifest()
```
    Returns the current manifest. The type depends on the type of media being played. May be null.
  - getCurrentTimeline
```
Timeline getCurrentTimeline()
```
    Returns the current Timeline. Never null, but may be empty.
    This method must only be called if COMMAND_GET_TIMELINE is available.
    
    See Also:
    
    Player.Listener.onTimelineChanged(Timeline, int)
  - getCurrentPeriodIndex
```
int getCurrentPeriodIndex()
```
    Returns the index of the period currently being played.
    This method must only be called if COMMAND_GET_TIMELINE is available.
  - getCurrentWindowIndex
```
@Deprecated
int getCurrentWindowIndex()
```
    Deprecated.
    Use getCurrentMediaItemIndex() instead.
  - getCurrentMediaItemIndex
```
int getCurrentMediaItemIndex()
```
    Returns the index of the current MediaItem in the timeline, or the prospective index if the current timeline is empty.
    This method must only be called if COMMAND_GET_TIMELINE is available.
  - getNextWindowIndex
```
@Deprecated
int getNextWindowIndex()
```
    Deprecated.
    Use getNextMediaItemIndex() instead.
  - getNextMediaItemIndex
```
int getNextMediaItemIndex()
```
    Returns the index of the MediaItem that will be played if seekToNextMediaItem() is called, which may depend on the current repeat mode and whether shuffle mode is enabled. Returns C.INDEX_UNSET if hasNextMediaItem() is false.
    Note: When the repeat mode is REPEAT_MODE_ONE, this method behaves the same as when the current repeat mode is REPEAT_MODE_OFF. See REPEAT_MODE_ONE for more details.
    This method must only be called if COMMAND_GET_TIMELINE is available.
  - getPreviousWindowIndex
```
@Deprecated
int getPreviousWindowIndex()
```
    Deprecated.
    Use getPreviousMediaItemIndex() instead.
  - getPreviousMediaItemIndex
```
int getPreviousMediaItemIndex()
```
    Returns the index of the MediaItem that will be played if seekToPreviousMediaItem() is called, which may depend on the current repeat mode and whether shuffle mode is enabled. Returns C.INDEX_UNSET if hasPreviousMediaItem() is false.
    Note: When the repeat mode is REPEAT_MODE_ONE, this method behaves the same as when the current repeat mode is REPEAT_MODE_OFF. See REPEAT_MODE_ONE for more details.
    This method must only be called if COMMAND_GET_TIMELINE is available.
  - getCurrentMediaItem
```
@Nullable
MediaItem getCurrentMediaItem()
```
    Returns the currently playing MediaItem. May be null if the timeline is empty.
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
    
    See Also:
    
    Player.Listener.onMediaItemTransition(MediaItem, int)
  - getMediaItemCount
```
int getMediaItemCount()
```
    Returns the number of media items in the playlist.
    This method must only be called if COMMAND_GET_TIMELINE is available.
  - getMediaItemAt
```
MediaItem getMediaItemAt(int index)
```
    Returns the MediaItem at the given index.
    This method must only be called if COMMAND_GET_TIMELINE is available.
  - getDuration
```
long getDuration()
```
    Returns the duration of the current content or ad in milliseconds, or C.TIME_UNSET if the duration is not known.
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
  - getCurrentPosition
```
long getCurrentPosition()
```
    Returns the playback position in the current content or ad, in milliseconds, or the prospective position in milliseconds if the current timeline is empty.
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
  - getBufferedPosition
```
long getBufferedPosition()
```
    Returns an estimate of the position in the current content or ad up to which data is buffered, in milliseconds.
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
  - getBufferedPercentage
```
@IntRange(from=0L,
          to=100L)
int getBufferedPercentage()
```
    Returns an estimate of the percentage in the current content or ad up to which data is buffered, or 0 if no estimate is available.
  - getTotalBufferedDuration
```
long getTotalBufferedDuration()
```
    Returns an estimate of the total buffered duration from the current position, in milliseconds. This includes pre-buffered data for subsequent ads and media items.
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
  - isCurrentWindowDynamic
```
@Deprecated
boolean isCurrentWindowDynamic()
```
    Deprecated.
    Use isCurrentMediaItemDynamic() instead.
  - isCurrentMediaItemDynamic
```
boolean isCurrentMediaItemDynamic()
```
    Returns whether the current MediaItem is dynamic (may change when the Timeline is updated), or false if the Timeline is empty.
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
    
    See Also:
    
    Timeline.Window.isDynamic
  - isCurrentWindowLive
```
@Deprecated
boolean isCurrentWindowLive()
```
    Deprecated.
    Use isCurrentMediaItemLive() instead.
  - isCurrentMediaItemLive
```
boolean isCurrentMediaItemLive()
```
    Returns whether the current MediaItem is live, or false if the Timeline is empty.
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
    
    See Also:
    
    Timeline.Window.isLive()
  - getCurrentLiveOffset
```
long getCurrentLiveOffset()
```
    Returns the offset of the current playback position from the live edge in milliseconds, or C.TIME_UNSET if the current MediaItem isCurrentMediaItemLive() isn't live} or the offset is unknown.
    The offset is calculated as currentTime - playbackPosition, so should usually be positive.
    Note that this offset may rely on an accurate local time, so this method may return an incorrect value if the difference between system clock and server clock is unknown.
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
  - isCurrentWindowSeekable
```
@Deprecated
boolean isCurrentWindowSeekable()
```
    Deprecated.
    Use isCurrentMediaItemSeekable() instead.
  - isCurrentMediaItemSeekable
```
boolean isCurrentMediaItemSeekable()
```
    Returns whether the current MediaItem is seekable, or false if the Timeline is empty.
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
    
    See Also:
    
    Timeline.Window.isSeekable
  - isPlayingAd
```
boolean isPlayingAd()
```
    Returns whether the player is currently playing an ad.
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
  - getCurrentAdGroupIndex
```
int getCurrentAdGroupIndex()
```
    If isPlayingAd() returns true, returns the index of the ad group in the period currently being played. Returns C.INDEX_UNSET otherwise.
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
  - getCurrentAdIndexInAdGroup
```
int getCurrentAdIndexInAdGroup()
```
    If isPlayingAd() returns true, returns the index of the ad in its ad group. Returns C.INDEX_UNSET otherwise.
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
  - getContentDuration
```
long getContentDuration()
```
    If isPlayingAd() returns true, returns the duration of the current content in milliseconds, or C.TIME_UNSET if the duration is not known. If there is no ad playing, the returned duration is the same as that returned by getDuration().
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
  - getContentPosition
```
long getContentPosition()
```
    If isPlayingAd() returns true, returns the content position that will be played once all ads in the ad group have finished playing, in milliseconds. If there is no ad playing, the returned position is the same as that returned by getCurrentPosition().
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
  - getContentBufferedPosition
```
long getContentBufferedPosition()
```
    If isPlayingAd() returns true, returns an estimate of the content position in the current content up to which data is buffered, in milliseconds. If there is no ad playing, the returned position is the same as that returned by getBufferedPosition().
    This method must only be called if COMMAND_GET_CURRENT_MEDIA_ITEM is available.
  - getAudioAttributes
```
AudioAttributes getAudioAttributes()
```
    Returns the attributes for audio playback.
    This method must only be called if COMMAND_GET_AUDIO_ATTRIBUTES is available.
  - setVolume
```
void setVolume(@FloatRange(from=0.0,to=1.0)
               float volume)
```
    Sets the audio volume, valid values are between 0 (silence) and 1 (unity gain, signal unchanged), inclusive.
    This method must only be called if COMMAND_SET_VOLUME is available.
    
    Parameters:
    
    volume - Linear output gain to apply to all audio channels.
  - getVolume
```
@FloatRange(from=0.0,
            to=1.0)
float getVolume()
```
    Returns the audio volume, with 0 being silence and 1 being unity gain (signal unchanged).
    This method must only be called if COMMAND_GET_VOLUME is available.
    
    Returns:
    
    The linear gain applied to all audio channels.
  - clearVideoSurface
```
void clearVideoSurface()
```
    Clears any Surface, SurfaceHolder, SurfaceView or TextureView currently set on the player.
    This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.
  - clearVideoSurface
```
void clearVideoSurface(@Nullable
                       Surface surface)
```
    Clears the Surface onto which video is being rendered if it matches the one passed. Else does nothing.
    This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.
    
    Parameters:
    
    surface - The surface to clear.
  - setVideoSurface
```
void setVideoSurface(@Nullable
                     Surface surface)
```
    Sets the Surface onto which video will be rendered. The caller is responsible for tracking the lifecycle of the surface, and must clear the surface by calling setVideoSurface(null) if the surface is destroyed.
    If the surface is held by a SurfaceView, TextureView or SurfaceHolder then it's recommended to use setVideoSurfaceView(SurfaceView), setVideoTextureView(TextureView) or setVideoSurfaceHolder(SurfaceHolder) rather than this method, since passing the holder allows the player to track the lifecycle of the surface automatically.
    This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.
    
    Parameters:
    
    surface - The Surface.
  - setVideoSurfaceHolder
```
void setVideoSurfaceHolder(@Nullable
                           SurfaceHolder surfaceHolder)
```
    Sets the SurfaceHolder that holds the Surface onto which video will be rendered. The player will track the lifecycle of the surface automatically.
    The thread that calls the SurfaceHolder.Callback methods must be the thread associated with getApplicationLooper().
    This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.
    
    Parameters:
    
    surfaceHolder - The surface holder.
  - clearVideoSurfaceHolder
```
void clearVideoSurfaceHolder(@Nullable
                             SurfaceHolder surfaceHolder)
```
    Clears the SurfaceHolder that holds the Surface onto which video is being rendered if it matches the one passed. Else does nothing.
    This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.
    
    Parameters:
    
    surfaceHolder - The surface holder to clear.
  - setVideoSurfaceView
```
void setVideoSurfaceView(@Nullable
                         SurfaceView surfaceView)
```
    Sets the SurfaceView onto which video will be rendered. The player will track the lifecycle of the surface automatically.
    The thread that calls the SurfaceHolder.Callback methods must be the thread associated with getApplicationLooper().
    This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.
    
    Parameters:
    
    surfaceView - The surface view.
  - clearVideoSurfaceView
```
void clearVideoSurfaceView(@Nullable
                           SurfaceView surfaceView)
```
    Clears the SurfaceView onto which video is being rendered if it matches the one passed. Else does nothing.
    This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.
    
    Parameters:
    
    surfaceView - The texture view to clear.
  - setVideoTextureView
```
void setVideoTextureView(@Nullable
                         TextureView textureView)
```
    Sets the TextureView onto which video will be rendered. The player will track the lifecycle of the surface automatically.
    The thread that calls the TextureView.SurfaceTextureListener methods must be the thread associated with getApplicationLooper().
    This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.
    
    Parameters:
    
    textureView - The texture view.
  - clearVideoTextureView
```
void clearVideoTextureView(@Nullable
                           TextureView textureView)
```
    Clears the TextureView onto which video is being rendered if it matches the one passed. Else does nothing.
    This method must only be called if COMMAND_SET_VIDEO_SURFACE is available.
    
    Parameters:
    
    textureView - The texture view to clear.
  - getVideoSize
```
VideoSize getVideoSize()
```
    Gets the size of the video.
    The video's width and height are 0 if there is no video or its size has not been determined yet.
    
    See Also:
    
    Player.Listener.onVideoSizeChanged(VideoSize)
  - getSurfaceSize
```
Size getSurfaceSize()
```
    Gets the size of the surface on which the video is rendered.
    
    See Also:
    
    Player.Listener.onSurfaceSizeChanged(int, int)
  - getCurrentCues
```
CueGroup getCurrentCues()
```
    Returns the current CueGroup.
    This method must only be called if COMMAND_GET_TEXT is available.
  - getDeviceInfo
```
DeviceInfo getDeviceInfo()
```
    Gets the device information.
  - getDeviceVolume
```
@IntRange(from=0L)
int getDeviceVolume()
```
    Gets the current volume of the device.
    For devices with local playback, the volume returned by this method varies according to the current stream type. The stream type is determined by AudioAttributes.usage which can be converted to stream type with Util.getStreamTypeForAudioUsage(int).
    For devices with remote playback, the volume of the remote device is returned.
    This method must only be called if COMMAND_GET_DEVICE_VOLUME is available.
  - isDeviceMuted
```
boolean isDeviceMuted()
```
    Gets whether the device is muted or not.
    This method must only be called if COMMAND_GET_DEVICE_VOLUME is available.
  - setDeviceVolume
```
void setDeviceVolume(@IntRange(from=0L)
                     int volume)
```
    Sets the volume of the device.
    This method must only be called if COMMAND_SET_DEVICE_VOLUME is available.
    
    Parameters:
    
    volume - The volume to set.
  - increaseDeviceVolume
```
void increaseDeviceVolume()
```
    Increases the volume of the device.
    This method must only be called if COMMAND_ADJUST_DEVICE_VOLUME is available.
  - decreaseDeviceVolume
```
void decreaseDeviceVolume()
```
    Decreases the volume of the device.
    This method must only be called if COMMAND_ADJUST_DEVICE_VOLUME is available.
  - setDeviceMuted
```
void setDeviceMuted(boolean muted)
```
    Sets the mute state of the device.
    This method must only be called if COMMAND_ADJUST_DEVICE_VOLUME is available.

Interface Player

Nested Class Summary

Field Summary

Method Summary

Field Detail

STATE_IDLE

STATE_BUFFERING

STATE_READY

STATE_ENDED

PLAY_WHEN_READY_CHANGE_REASON_USER_REQUEST

PLAY_WHEN_READY_CHANGE_REASON_AUDIO_FOCUS_LOSS

PLAY_WHEN_READY_CHANGE_REASON_AUDIO_BECOMING_NOISY

PLAY_WHEN_READY_CHANGE_REASON_REMOTE

PLAY_WHEN_READY_CHANGE_REASON_END_OF_MEDIA_ITEM

PLAYBACK_SUPPRESSION_REASON_NONE

PLAYBACK_SUPPRESSION_REASON_TRANSIENT_AUDIO_FOCUS_LOSS

REPEAT_MODE_OFF

REPEAT_MODE_ONE

REPEAT_MODE_ALL

DISCONTINUITY_REASON_AUTO_TRANSITION

DISCONTINUITY_REASON_SEEK

DISCONTINUITY_REASON_SEEK_ADJUSTMENT

DISCONTINUITY_REASON_SKIP

DISCONTINUITY_REASON_REMOVE

DISCONTINUITY_REASON_INTERNAL

TIMELINE_CHANGE_REASON_PLAYLIST_CHANGED

TIMELINE_CHANGE_REASON_SOURCE_UPDATE

MEDIA_ITEM_TRANSITION_REASON_REPEAT

MEDIA_ITEM_TRANSITION_REASON_AUTO

MEDIA_ITEM_TRANSITION_REASON_SEEK

MEDIA_ITEM_TRANSITION_REASON_PLAYLIST_CHANGED

EVENT_TIMELINE_CHANGED

EVENT_MEDIA_ITEM_TRANSITION

EVENT_TRACKS_CHANGED

EVENT_IS_LOADING_CHANGED

EVENT_PLAYBACK_STATE_CHANGED

EVENT_PLAY_WHEN_READY_CHANGED

EVENT_PLAYBACK_SUPPRESSION_REASON_CHANGED

EVENT_IS_PLAYING_CHANGED

EVENT_REPEAT_MODE_CHANGED

EVENT_SHUFFLE_MODE_ENABLED_CHANGED

EVENT_PLAYER_ERROR

EVENT_POSITION_DISCONTINUITY

EVENT_PLAYBACK_PARAMETERS_CHANGED

EVENT_AVAILABLE_COMMANDS_CHANGED

EVENT_MEDIA_METADATA_CHANGED

EVENT_PLAYLIST_METADATA_CHANGED

EVENT_SEEK_BACK_INCREMENT_CHANGED

EVENT_SEEK_FORWARD_INCREMENT_CHANGED

EVENT_MAX_SEEK_TO_PREVIOUS_POSITION_CHANGED

EVENT_TRACK_SELECTION_PARAMETERS_CHANGED

EVENT_AUDIO_ATTRIBUTES_CHANGED

EVENT_AUDIO_SESSION_ID

EVENT_VOLUME_CHANGED

EVENT_SKIP_SILENCE_ENABLED_CHANGED

EVENT_SURFACE_SIZE_CHANGED

EVENT_VIDEO_SIZE_CHANGED

EVENT_RENDERED_FIRST_FRAME

EVENT_CUES

EVENT_METADATA

EVENT_DEVICE_INFO_CHANGED

EVENT_DEVICE_VOLUME_CHANGED

COMMAND_PLAY_PAUSE

COMMAND_PREPARE

COMMAND_STOP

COMMAND_SEEK_TO_DEFAULT_POSITION

COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM

COMMAND_SEEK_IN_CURRENT_WINDOW

COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM

COMMAND_SEEK_TO_PREVIOUS_WINDOW

COMMAND_SEEK_TO_PREVIOUS

COMMAND_SEEK_TO_NEXT_MEDIA_ITEM

COMMAND_SEEK_TO_NEXT_WINDOW

COMMAND_SEEK_TO_NEXT

COMMAND_SEEK_TO_MEDIA_ITEM

COMMAND_SEEK_TO_WINDOW

COMMAND_SEEK_BACK

COMMAND_SEEK_FORWARD

COMMAND_SET_SPEED_AND_PITCH

COMMAND_SET_SHUFFLE_MODE