Player

Kotlin |Java

public interface Player

Known direct subclasses

BasePlayer, ExoPlayer, ForwardingPlayer, MediaController

`BasePlayer`	Abstract base `Player` which implements common implementation independent methods.
`ExoPlayer`	An extensible media player that plays `MediaSource`s.
`ForwardingPlayer`	A `Player` that forwards method calls to another `Player`.
`MediaController`	A controller that interacts with a `MediaSession`, a `MediaSessionService` hosting a `MediaSession`, or a `MediaLibraryService` hosting a .

Known indirect subclasses

CastPlayer, ForwardingSimpleBasePlayer, MediaBrowser, SimpleBasePlayer, SimpleExoPlayer, StubExoPlayer, StubPlayer

`CastPlayer`	`Player` implementation that communicates with a Cast receiver app.
`ForwardingSimpleBasePlayer`	A `SimpleBasePlayer` that forwards all calls to another `Player` instance.
`MediaBrowser`	Browses media content offered by a `MediaLibraryService` in addition to the functions.
`SimpleBasePlayer`	A base implementation for `Player` that reduces the number of methods to implement to a minimum.
`SimpleExoPlayer`	This class is deprecated. Use `ExoPlayer` instead.
`StubExoPlayer`	An abstract `ExoPlayer` implementation that throws `UnsupportedOperationException` from every method.
`StubPlayer`	An abstract `Player` implementation that throws `UnsupportedOperationException` from every method.

A media player interface defining high-level functionality, such as the ability to play, pause, seek and query properties of the currently playing media.

Player features and usage

Some important properties of media players that implement this interface are:

All methods must be called from a single application thread unless indicated otherwise. Callbacks in registered listeners are called on the same thread.
The available functionality can be limited. Player instances provide a set of available commands to signal feature support and users of the interface must only call methods if the corresponding Command is available.
Users can register Player.Listener callbacks that get informed about state changes.
Player instances need to update the visible state immediately after each method call, even if the actual changes are handled on background threads or even other devices. This simplifies the usage for callers of methods as no asynchronous handling needs to be considered.
Player instances can provide playlist operations, like 'set', 'add', 'remove', 'move' or 'replace' of MediaItem instances. The player can also support repeat modes and shuffling within this playlist. The player provides a representing the structure of the playlist and all its items, which can be obtained by calling getCurrentTimeline
Player instances can provide seeking within the currently playing item and to other items, using the various seek... methods.
Player instances can provide Tracks defining the currently available and selected tracks, which can be obtained by calling getCurrentTracks. Users can also modify track selection behavior by setting TrackSelectionParameters with setTrackSelectionParameters.
Player instances can provide MediaMetadata about the currently playing item, which can be obtained by calling getMediaMetadata.
Player instances can provide information about ads in its media structure, for example via isPlayingAd.
Player instances can accept different types of video outputs, like SurfaceView or TextureView for video rendering.
Player instances can handle playback speed, audio attributes, and audio volume.
Player instances can provide information about the playback device, which may be remote, and allow to change the device's volume.

API stability guarantees

The majority of the Player interface and its related classes are part of the stable API that guarantees backwards-compatibility for users of the API. Only more advances use cases may need to rely on UnstableApi classes and methods that are subject to incompatible changes or even removal in a future release. Implementors of the Player interface are not covered by these API stability guarantees.

Player state

Users can listen to state changes by adding a Player.Listener with addListener.

The main elements of the overall player state are:

Playlist
- MediaItem instances can be added with methods like setMediaItem to define what the player will be playing.
- The current playlist can be obtained via getCurrentTimeline and convenience methods like getMediaItemCount or getCurrentMediaItem.
- With an empty playlist, the player can only be in STATE_IDLE or STATE_ENDED.
Playback state
- STATE_IDLE: This is the initial state, the state when the player is stopped, and when playback failed. The player will hold only limited resources in this state. prepare must be called to transition away from this state.
- STATE_BUFFERING: The player is not able to immediately play from its current position. This mostly happens because more data needs to be loaded.
- STATE_READY: The player is able to immediately play from its current position.
- STATE_ENDED: The player finished playing all media, or there is no media to play.
Play/Pause, playback suppression and isPlaying
- playWhenReady: Indicates the user intention to play. It can be set with play or pause.
- playback suppression: Defines a reason for which playback will be suppressed even if playWhenReady is true.
- isPlaying: Whether the player is playing (that is, its position is advancing and media is being presented). This will only be true if playback state is STATE_READY, playWhenReady is true, and playback is not suppressed.
Playback position
- media item index: The index in the playlist.
- ad insertion: Whether an inserted ad is playing and which ad group index and ad index in the group it belongs to
- current position: The current position of the playback. This is the same as the content position unless an ad is playing, where this indicates the position in the inserted ad.

Note that there are no callbacks for normal playback progression, only for transitions between media items and other position discontinuities. Code that needs to monitor playback progress (for example, an UI progress bar) should query the current position in appropriate intervals.

Implementing the Player interface

Implementing the Player interface is complex, as the interface includes many convenience methods that need to provide a consistent state and behavior, requires correct handling of listeners and available commands, and expects immediate state changes even if methods are internally handled asynchronously. For this reason, implementations are advised to inherit that handles all of these complexities and provides a simpler integration point for implementors of the interface.

Summary

Nested types
`@Documented @Retention(value = RetentionPolicy.SOURCE) @Target(value = ) @IntDef(value = ) public annotation Player.Command` Commands that indicate which method calls are currently permitted on a particular `Player` instance.
`public final class Player.Commands` A set of `commands`.
`@UnstableApi public final class Player.Commands.Builder` A builder for `Commands` instances.
`@Documented @Retention(value = RetentionPolicy.SOURCE) @Target(value = ) @IntDef(value = ) public annotation Player.DiscontinuityReason` Reasons for position discontinuities.
`@Documented @Retention(value = RetentionPolicy.SOURCE) @Target(value = ) @IntDef(value = ) public annotation Player.Event` Events that can be reported via `onEvents`.
`public final class Player.Events` A set of `events`.
`public interface Player.Listener` Listener for changes in a `Player`.
`@Documented @Retention(value = RetentionPolicy.SOURCE) @Target(value = ) @IntDef(value = ) public annotation Player.MediaItemTransitionReason` Reasons for media item transitions.
`@Documented @Retention(value = RetentionPolicy.SOURCE) @Target(value = ) @IntDef(value = ) public annotation Player.PlayWhenReadyChangeReason` Reasons for `playWhenReady` changes.
`@Documented @Retention(value = RetentionPolicy.SOURCE) @Target(value = ) @IntDef(value = ) public annotation Player.PlaybackSuppressionReason` Reason why playback is suppressed even though `getPlayWhenReady` is `true`.
`public final class Player.PositionInfo` Position info describing a playback position involved in a discontinuity.
`@Documented @Retention(value = RetentionPolicy.SOURCE) @Target(value = ) @IntDef(value = ) public annotation Player.RepeatMode` Repeat modes for playback.
`@Documented @Retention(value = RetentionPolicy.SOURCE) @Target(value = ) @IntDef(value = ) public annotation Player.State` Playback state.
`@Documented @Retention(value = RetentionPolicy.SOURCE) @Target(value = ) @IntDef(value = ) public annotation Player.TimelineChangeReason` Reasons for timeline changes.

Constants
`default static final int`	`COMMAND_ADJUST_DEVICE_VOLUME = 26` This field is deprecated. Use `COMMAND_ADJUST_DEVICE_VOLUME_WITH_FLAGS` instead.
`default static final int`	`COMMAND_ADJUST_DEVICE_VOLUME_WITH_FLAGS = 34` Command to increase and decrease the device volume and mute it with volume flags.
`default static final int`	`COMMAND_CHANGE_MEDIA_ITEMS = 20` Command to change the `media items` in the playlist.
`default static final int`	`COMMAND_GET_AUDIO_ATTRIBUTES = 21` Command to get the player current `AudioAttributes`.
`default static final int`	`COMMAND_GET_CURRENT_MEDIA_ITEM = 16` Command to get information about the currently playing `MediaItem`.
`default static final int`	`COMMAND_GET_DEVICE_VOLUME = 23` Command to get the device volume and whether it is muted.
`default static final int`	`COMMAND_GET_MEDIA_ITEMS_METADATA = 18` This field is deprecated. Use `COMMAND_GET_METADATA` instead.
`default static final int`	`COMMAND_GET_METADATA = 18` Command to get metadata related to the playlist and current `MediaItem`.
`default static final int`	`COMMAND_GET_TEXT = 28` Command to get the text that should currently be displayed by the player.
`default static final int`	`COMMAND_GET_TIMELINE = 17` Command to get the information about the current timeline.
`default static final int`	`COMMAND_GET_TRACKS = 30` Command to get details of the current track selection.
`default static final int`	`COMMAND_GET_VOLUME = 22` Command to get the player volume.
`default static final int`	`COMMAND_INVALID = -1` Represents an invalid `Command`.
`default static final int`	`COMMAND_PLAY_PAUSE = 1` Command to start, pause or resume playback.
`default static final int`	`COMMAND_PREPARE = 2` Command to prepare the player.
`default static final int`	`COMMAND_RELEASE = 32` Command to release the player.
`default static final int`	`COMMAND_SEEK_BACK = 11` Command to seek back by a fixed increment inside the current `MediaItem`.
`default static final int`	`COMMAND_SEEK_FORWARD = 12` Command to seek forward by a fixed increment inside the current `MediaItem`.
`default static final int`	`COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM = 5` Command to seek anywhere inside the current `MediaItem`.
`default static final int`	`@UnstableApi COMMAND_SEEK_IN_CURRENT_WINDOW = 5` This field is deprecated. Use `COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM` instead.
`default static final int`	`COMMAND_SEEK_TO_DEFAULT_POSITION = 4` Command to seek to the default position of the current `MediaItem`.
`default static final int`	`COMMAND_SEEK_TO_MEDIA_ITEM = 10` Command to seek anywhere in any `MediaItem`.
`default static final int`	`COMMAND_SEEK_TO_NEXT = 9` Command to seek to a later position in the current `MediaItem` or the default position of the next `MediaItem`.
`default static final int`	`COMMAND_SEEK_TO_NEXT_MEDIA_ITEM = 8` Command to seek to the default position of the next `MediaItem`.
`default static final int`	`@UnstableApi COMMAND_SEEK_TO_NEXT_WINDOW = 8` This field is deprecated. Use `COMMAND_SEEK_TO_NEXT_MEDIA_ITEM` instead.
`default static final int`	`COMMAND_SEEK_TO_PREVIOUS = 7` Command to seek to an earlier position in the current `MediaItem` or the default position of the previous `MediaItem`.
`default static final int`	`COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM = 6` Command to seek to the default position of the previous `MediaItem`.
`default static final int`	`@UnstableApi COMMAND_SEEK_TO_PREVIOUS_WINDOW = 6` This field is deprecated. Use `COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM` instead.
`default static final int`	`@UnstableApi COMMAND_SEEK_TO_WINDOW = 10` This field is deprecated. Use `COMMAND_SEEK_TO_MEDIA_ITEM` instead.
`default static final int`	`COMMAND_SET_AUDIO_ATTRIBUTES = 35` Command to set the player's audio attributes.
`default static final int`	`COMMAND_SET_DEVICE_VOLUME = 25` This field is deprecated. Use `COMMAND_SET_DEVICE_VOLUME_WITH_FLAGS` instead.
`default static final int`	`COMMAND_SET_DEVICE_VOLUME_WITH_FLAGS = 33` Command to set the device volume with volume flags.
`default static final int`	`COMMAND_SET_MEDIA_ITEM = 31` Command to set a `MediaItem`.
`default static final int`	`COMMAND_SET_MEDIA_ITEMS_METADATA = 19` This field is deprecated. Use `COMMAND_SET_PLAYLIST_METADATA` instead.
`default static final int`	`COMMAND_SET_PLAYLIST_METADATA = 19` Command to set the playlist metadata.
`default static final int`	`COMMAND_SET_REPEAT_MODE = 15` Command to set the repeat mode.
`default static final int`	`COMMAND_SET_SHUFFLE_MODE = 14` Command to enable shuffling.
`default static final int`	`COMMAND_SET_SPEED_AND_PITCH = 13` Command to set the playback speed and pitch.
`default static final int`	`COMMAND_SET_TRACK_SELECTION_PARAMETERS = 29` Command to set the player's track selection parameters.
`default static final int`	`COMMAND_SET_VIDEO_SURFACE = 27` Command to set and clear the surface on which to render the video.
`default static final int`	`COMMAND_SET_VOLUME = 24` Command to set the player volume.
`default static final int`	`COMMAND_STOP = 3` Command to stop playback.
`default static final int`	`DISCONTINUITY_REASON_AUTO_TRANSITION = 0` Automatic playback transition from one period in the timeline to the next.
`default static final int`	`DISCONTINUITY_REASON_INTERNAL = 5` Discontinuity introduced internally (e.g. by the source).
`default static final int`	`DISCONTINUITY_REASON_REMOVE = 4` Discontinuity caused by the removal of the current period from the `Timeline`.
`default static final int`	`DISCONTINUITY_REASON_SEEK = 1` Seek within the current period or to another period.
`default static final int`	`DISCONTINUITY_REASON_SEEK_ADJUSTMENT = 2` Seek adjustment due to being unable to seek to the requested position or because the seek was permitted to be inexact.
`default static final int`	`DISCONTINUITY_REASON_SILENCE_SKIP = 6` Discontinuity introduced by a skipped silence.
`default static final int`	`DISCONTINUITY_REASON_SKIP = 3` Discontinuity introduced by a skipped period (for instance a skipped ad).
`default static final int`	`EVENT_AUDIO_ATTRIBUTES_CHANGED = 20` `getAudioAttributes` changed.
`default static final int`	`EVENT_AUDIO_SESSION_ID = 21` The audio session id was set.
`default static final int`	`EVENT_AVAILABLE_COMMANDS_CHANGED = 13` `isCommandAvailable` changed for at least one `Command`.
`default static final int`	`EVENT_CUES = 27` `getCurrentCues` changed.
`default static final int`	`EVENT_DEVICE_INFO_CHANGED = 29` `getDeviceInfo` changed.
`default static final int`	`EVENT_DEVICE_VOLUME_CHANGED = 30` `getDeviceVolume` or `isDeviceMuted` changed.
`default static final int`	`EVENT_IS_LOADING_CHANGED = 3` `isLoading` ()} changed.
`default static final int`	`EVENT_IS_PLAYING_CHANGED = 7` `isPlaying` changed.
`default static final int`	`EVENT_MAX_SEEK_TO_PREVIOUS_POSITION_CHANGED = 18` `getMaxSeekToPreviousPosition` changed.
`default static final int`	`EVENT_MEDIA_ITEM_TRANSITION = 1` `getCurrentMediaItem` changed or the player started repeating the current item.
`default static final int`	`EVENT_MEDIA_METADATA_CHANGED = 14` `getMediaMetadata` changed.
`default static final int`	`EVENT_METADATA = 28` Metadata associated with the current playback time changed.
`default static final int`	`EVENT_PLAYBACK_PARAMETERS_CHANGED = 12` `getPlaybackParameters` changed.
`default static final int`	`EVENT_PLAYBACK_STATE_CHANGED = 4` `getPlaybackState` changed.
`default static final int`	`EVENT_PLAYBACK_SUPPRESSION_REASON_CHANGED = 6` `getPlaybackSuppressionReason` changed.
`default static final int`	`EVENT_PLAYER_ERROR = 10` `getPlayerError` changed.
`default static final int`	`EVENT_PLAYLIST_METADATA_CHANGED = 15` `getPlaylistMetadata` changed.
`default static final int`	`EVENT_PLAY_WHEN_READY_CHANGED = 5` `getPlayWhenReady` changed.
`default static final int`	`EVENT_POSITION_DISCONTINUITY = 11` A position discontinuity occurred.
`default static final int`	`EVENT_RENDERED_FIRST_FRAME = 26` 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.
`default static final int`	`EVENT_REPEAT_MODE_CHANGED = 8` `getRepeatMode` changed.
`default static final int`	`EVENT_SEEK_BACK_INCREMENT_CHANGED = 16` `getSeekBackIncrement` changed.
`default static final int`	`EVENT_SEEK_FORWARD_INCREMENT_CHANGED = 17` `getSeekForwardIncrement` changed.
`default static final int`	`EVENT_SHUFFLE_MODE_ENABLED_CHANGED = 9` `getShuffleModeEnabled` changed.
`default static final int`	`EVENT_SKIP_SILENCE_ENABLED_CHANGED = 23` Skipping silences in the audio stream is enabled or disabled.
`default static final int`	`EVENT_SURFACE_SIZE_CHANGED = 24` The size of the surface onto which the video is being rendered changed.
`default static final int`	`EVENT_TIMELINE_CHANGED = 0` `getCurrentTimeline` changed.
`default static final int`	`EVENT_TRACKS_CHANGED = 2` `getCurrentTracks` changed.
`default static final int`	`EVENT_TRACK_SELECTION_PARAMETERS_CHANGED = 19` `getTrackSelectionParameters` changed.
`default static final int`	`EVENT_VIDEO_SIZE_CHANGED = 25` `getVideoSize` changed.
`default static final int`	`EVENT_VOLUME_CHANGED = 22` `getVolume` changed.
`default static final int`	`MEDIA_ITEM_TRANSITION_REASON_AUTO = 1` Playback has automatically transitioned to the next media item.
`default static final int`	`MEDIA_ITEM_TRANSITION_REASON_PLAYLIST_CHANGED = 3` The current media item has changed because of a change in the playlist.
`default static final int`	`MEDIA_ITEM_TRANSITION_REASON_REPEAT = 0` The media item has been repeated.
`default static final int`	`MEDIA_ITEM_TRANSITION_REASON_SEEK = 2` A seek to another media item has occurred.
`default static final int`	`PLAYBACK_SUPPRESSION_REASON_NONE = 0` Playback is not suppressed.
`default static final int`	`PLAYBACK_SUPPRESSION_REASON_SCRUBBING = 4` Playback is suppressed because the player is currently scrubbing.
`default static final int`	`PLAYBACK_SUPPRESSION_REASON_TRANSIENT_AUDIO_FOCUS_LOSS = 1` Playback is suppressed due to transient audio focus loss.
`default static final int`	`PLAYBACK_SUPPRESSION_REASON_UNSUITABLE_AUDIO_OUTPUT = 3` Playback is suppressed due to attempt to play on an unsuitable audio output (e.g. attempt to play on built-in speaker on a Wear OS device).
`default static final int`	`PLAYBACK_SUPPRESSION_REASON_UNSUITABLE_AUDIO_ROUTE = 2` This field is deprecated. Use `PLAYBACK_SUPPRESSION_REASON_UNSUITABLE_AUDIO_OUTPUT` instead.
`default static final int`	`PLAY_WHEN_READY_CHANGE_REASON_AUDIO_BECOMING_NOISY = 3` Playback has been paused to avoid becoming noisy.
`default static final int`	`PLAY_WHEN_READY_CHANGE_REASON_AUDIO_FOCUS_LOSS = 2` Playback has been paused because of a loss of audio focus.
`default static final int`	`PLAY_WHEN_READY_CHANGE_REASON_END_OF_MEDIA_ITEM = 5` Playback has been paused at the end of a media item.
`default static final int`	`PLAY_WHEN_READY_CHANGE_REASON_REMOTE = 4` Playback has been started or paused because of a remote change.
`default static final int`	`PLAY_WHEN_READY_CHANGE_REASON_SUPPRESSED_TOO_LONG = 6` Playback has been paused because playback has been `suppressed` too long.
`default static final int`	`PLAY_WHEN_READY_CHANGE_REASON_USER_REQUEST = 1` Playback has been started or paused by a call to `setPlayWhenReady`.
`default static final int`	`REPEAT_MODE_ALL = 2` Repeats the entire timeline infinitely.
`default static final int`	`REPEAT_MODE_OFF = 0` Normal playback without repetition.
`default static final int`	`REPEAT_MODE_ONE = 1` Repeats the currently playing `MediaItem` infinitely during ongoing playback.
`default static final int`	`STATE_BUFFERING = 2` The player is not able to immediately play the media, but is doing work toward being able to do so.
`default static final int`	`STATE_ENDED = 4` The player has finished playing the media.
`default static final int`	`STATE_IDLE = 1` The player is idle, meaning it holds only limited resources.
`default static final int`	`STATE_READY = 3` The player is able to immediately play from its current position.
`default static final int`	`TIMELINE_CHANGE_REASON_PLAYLIST_CHANGED = 0` Timeline changed as a result of a change of the playlist items or the order of the items.
`default static final int`	`TIMELINE_CHANGE_REASON_SOURCE_UPDATE = 1` Timeline changed as a result of a source update (e.g. result of a dynamic update by the played media).

Public methods
`abstract void`	`addListener(Player.Listener listener)` Registers a listener to receive all events from the player.
`abstract void`	`addMediaItem(MediaItem mediaItem)` Adds a media item to the end of the playlist.
`abstract void`	`addMediaItem(int index, MediaItem mediaItem)` Adds a media item at the given index of the playlist.
`abstract void`	`addMediaItems(List<MediaItem> mediaItems)` Adds a list of media items to the end of the playlist.
`abstract void`	`addMediaItems(int index, List<MediaItem> mediaItems)` Adds a list of media items at the given index of the playlist.
`abstract boolean`	`canAdvertiseSession()` Returns whether the player can be used to advertise a media session.
`abstract void`	`clearMediaItems()` Clears the playlist.
`abstract void`	`clearVideoSurface()` Clears any `Surface`, `SurfaceHolder`, `SurfaceView` or `TextureView` currently set on the player.
`abstract void`	`clearVideoSurface(@Nullable Surface surface)` Clears the `Surface` onto which video is being rendered if it matches the one passed.
`abstract void`	`clearVideoSurfaceHolder(@Nullable SurfaceHolder surfaceHolder)` Clears the `SurfaceHolder` that holds the `Surface` onto which video is being rendered if it matches the one passed.
`abstract void`	`clearVideoSurfaceView(@Nullable SurfaceView surfaceView)` Clears the `SurfaceView` onto which video is being rendered if it matches the one passed.
`abstract void`	`clearVideoTextureView(@Nullable TextureView textureView)` Clears the `TextureView` onto which video is being rendered if it matches the one passed.
`abstract void`	`decreaseDeviceVolume()` This method is deprecated. Use `decreaseDeviceVolume` instead.
`abstract void`	`decreaseDeviceVolume(@C.VolumeFlags int flags)` Decreases the volume of the device.
`abstract Looper`	`getApplicationLooper()` Returns the `Looper` associated with the application thread that's used to access the player and on which player events are received.
`abstract AudioAttributes`	`getAudioAttributes()` Returns the attributes for audio playback.
`abstract Player.Commands`	`getAvailableCommands()` Returns the player's currently available `Commands`.
`abstract @IntRange(from = 0, to = 100) 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.
`abstract long`	`getBufferedPosition()` Returns an estimate of the position in the current content or ad up to which data is buffered, in milliseconds.
`abstract 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.
`abstract long`	`getContentDuration()` If `isPlayingAd` returns `true`, returns the duration of the current content in milliseconds, or `TIME_UNSET` if the duration is not known.
`abstract 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.
`abstract int`	`getCurrentAdGroupIndex()` If `isPlayingAd` returns true, returns the index of the ad group in the period currently being played.
`abstract int`	`getCurrentAdIndexInAdGroup()` If `isPlayingAd` returns true, returns the index of the ad in its ad group.
`abstract CueGroup`	`getCurrentCues()` Returns the current `CueGroup`.
`abstract long`	`getCurrentLiveOffset()` Returns the offset of the current playback position from the live edge in milliseconds, or `TIME_UNSET` if the current `MediaItemisn't live` or the offset is unknown.
`abstract @Nullable Object`	`@UnstableApi getCurrentManifest()` Returns the current manifest.
`abstract @Nullable MediaItem`	`getCurrentMediaItem()` Returns the currently playing `MediaItem`.
`abstract int`	`getCurrentMediaItemIndex()` Returns the index of the current `MediaItem` in the `timeline`, or the prospective index if the `current timeline` is empty.
`abstract int`	`getCurrentPeriodIndex()` Returns the index of the period currently being played.
`abstract 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.
`abstract Timeline`	`getCurrentTimeline()` Returns the current `Timeline`.
`abstract Tracks`	`getCurrentTracks()` Returns the current tracks.
`abstract int`	`@UnstableApi getCurrentWindowIndex()` This method is deprecated. Use `getCurrentMediaItemIndex` instead.
`abstract DeviceInfo`	`getDeviceInfo()` Gets the device information.
`abstract @IntRange(from = 0) int`	`getDeviceVolume()` Gets the current volume of the device.
`abstract long`

Player

Player features and usage

API stability guarantees

Player state

Implementing the Player interface

Summary

Nested types

Constants

Public methods