# PlayerAdapter.Callback added in[version 26.1.0](https://developer.android.com/topic/libraries/support-library/revisions) belongs to Maven artifact com.android.support:leanback-v17:28.0.0-alpha1 Summary:[Ctors](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#pubctors)\|[Methods](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#inhmethods)\|[\[Expand All\]](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#) # PlayerAdapter.Callback | This package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack). We recommend using the AndroidX libraries in all new projects. You should also consider[migrating](https://developer.android.com/jetpack/androidx/migrate)existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library[class mappings](https://developer.android.com/jetpack/androidx/migrate/class-mappings). ` public static class PlayerAdapter.Callback ` ` extends Object `` ` |---|-----------------------------------------------------------| | java.lang.Object || | ↳ | android.support.v17.leanback.media.PlayerAdapter.Callback |
*** ** * ** *** Client for client of PlayerAdapter. ## Summary | ### Public constructors || |--------------------------------------------------------------------------------------------------------------------------------------------------------------|---| | ` `[PlayerAdapter.Callback](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#PlayerAdapter.Callback())`() ` | | ### Public methods || |---------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` void` | ` `[onBufferedPositionChanged](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#onBufferedPositionChanged(android.support.v17.leanback.media.PlayerAdapter))`(`[PlayerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter)` adapter) ` Event for[getBufferedPosition()](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter#getBufferedPosition())changed. | | ` void` | ` `[onBufferingStateChanged](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#onBufferingStateChanged(android.support.v17.leanback.media.PlayerAdapter, boolean))`(`[PlayerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter)` adapter, boolean start) ` Event for buffering start or stop. | | ` void` | ` `[onCurrentPositionChanged](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#onCurrentPositionChanged(android.support.v17.leanback.media.PlayerAdapter))`(`[PlayerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter)` adapter) ` Event for[getCurrentPosition()](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter#getCurrentPosition())changed. | | ` void` | ` `[onDurationChanged](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#onDurationChanged(android.support.v17.leanback.media.PlayerAdapter))`(`[PlayerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter)` adapter) ` Event for[getDuration()](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter#getDuration())changed. | | ` void` | ` `[onError](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#onError(android.support.v17.leanback.media.PlayerAdapter, int, java.lang.String))`(`[PlayerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter)` adapter, int errorCode, String errorMessage) ` Event for error. | | ` void` | ` `[onMetadataChanged](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#onMetadataChanged(android.support.v17.leanback.media.PlayerAdapter))`(`[PlayerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter)` adapter) ` Event for meta data changed. | | ` void` | ` `[onPlayCompleted](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#onPlayCompleted(android.support.v17.leanback.media.PlayerAdapter))`(`[PlayerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter)` adapter) ` Client when the current media is finished. | | ` void` | ` `[onPlayStateChanged](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#onPlayStateChanged(android.support.v17.leanback.media.PlayerAdapter))`(`[PlayerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter)` adapter) ` Client for Play/Pause state change. | | ` void` | ` `[onPreparedStateChanged](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#onPreparedStateChanged(android.support.v17.leanback.media.PlayerAdapter))`(`[PlayerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter)` adapter) ` Client for[isPrepared()](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter#isPrepared())changed. | | ` void` | ` `[onVideoSizeChanged](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#onVideoSizeChanged(android.support.v17.leanback.media.PlayerAdapter, int, int))`(`[PlayerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter)` adapter, int width, int height) ` Event for video size changed. | | ### Inherited methods | |-----------------------|---| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback#)From class` java.lang.Object ` |-------------------|-------------------------------| | ` Object` | ` clone() ` | | ` boolean` | ` equals(Object arg0) ` | | ` void` | ` finalize() ` | | ` final Class` | ` getClass() ` | | ` int` | ` hashCode() ` | | ` final void` | ` notify() ` | | ` final void` | ` notifyAll() ` | | ` String` | ` toString() ` | | ` final void` | ` wait(long arg0, int arg1) ` | | ` final void` | ` wait(long arg0) ` | | ` final void` | ` wait() ` | || ## Public constructors ### PlayerAdapter.Callback added in[version 26.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` PlayerAdapter.Callback () ```

## Public methods ### onBufferedPositionChanged added in[version 26.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void onBufferedPositionChanged (PlayerAdapter adapter) ``` Event for[getBufferedPosition()](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter#getBufferedPosition())changed.
| Parameters || |-----------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `adapter` | `PlayerAdapter`: The adapter whose[getBufferedPosition()](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter#getBufferedPosition())changed.
| ### onBufferingStateChanged added in[version 26.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void onBufferingStateChanged (PlayerAdapter adapter, boolean start) ``` Event for buffering start or stop. Initial default value is false.
| Parameters || |-----------|----------------------------------------------------------------------------------| | `adapter` | `PlayerAdapter`: The adapter that begins buffering or finishes buffering.
| | `start` | `boolean`: True for buffering start, false otherwise.
| ### onCurrentPositionChanged added in[version 26.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void onCurrentPositionChanged (PlayerAdapter adapter) ``` Event for[getCurrentPosition()](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter#getCurrentPosition())changed.
| Parameters || |-----------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `adapter` | `PlayerAdapter`: The adapter whose[getCurrentPosition()](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter#getCurrentPosition())changed.
| ### onDurationChanged added in[version 26.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void onDurationChanged (PlayerAdapter adapter) ``` Event for[getDuration()](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter#getDuration())changed. Usually the duration does not change after playing except for live stream.
| Parameters || |-----------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `adapter` | `PlayerAdapter`: The adapter whose[getDuration()](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter#getDuration())changed.
| ### onError added in[version 26.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void onError (PlayerAdapter adapter, int errorCode, String errorMessage) ``` Event for error.
| Parameters || |----------------|----------------------------------------------------------------------| | `adapter` | `PlayerAdapter`: The adapter that encounters error.
| | `errorCode` | `int`: Optional error code, specific to implementation.
| | `errorMessage` | `String`: Optional error message, specific to implementation.
| ### onMetadataChanged added in[version 27.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void onMetadataChanged (PlayerAdapter adapter) ``` Event for meta data changed.
| Parameters || |-----------|-----------------------------------------------------------------------| | `adapter` | `PlayerAdapter`: The adapter that finishes current media item.
| ### onPlayCompleted added in[version 26.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void onPlayCompleted (PlayerAdapter adapter) ``` Client when the current media is finished.
| Parameters || |-----------|---------------------------------------------------------------------------| | `adapter` | `PlayerAdapter`: The adapter that has just finished current media.
| ### onPlayStateChanged added in[version 26.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void onPlayStateChanged (PlayerAdapter adapter) ``` Client for Play/Pause state change. See[isPlaying()](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter#isPlaying()).
| Parameters || |-----------|------------------------| | `adapter` | `PlayerAdapter`
| ### onPreparedStateChanged added in[version 26.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void onPreparedStateChanged (PlayerAdapter adapter) ``` Client for[isPrepared()](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter#isPrepared())changed.
| Parameters || |-----------|-------------------------------------------------------------------| | `adapter` | `PlayerAdapter`: The adapter that has changed ready state.
| ### onVideoSizeChanged added in[version 26.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void onVideoSizeChanged (PlayerAdapter adapter, int width, int height) ``` Event for video size changed.
| Parameters || |-----------|------------------------------------------------------------------------------------| | `adapter` | `PlayerAdapter`: The adapter whose video size has been detected or changed.
| | `width` | `int`: Intrinsic width of the video.
| | `height` | `int`: Intrinsic height of the video.
| - ## Interfaces - [SurfaceHolderGlueHost](https://developer.android.com/reference/android/support/v17/leanback/media/SurfaceHolderGlueHost) - ## Classes - [MediaControllerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/MediaControllerAdapter) - [MediaControllerGlue](https://developer.android.com/reference/android/support/v17/leanback/media/MediaControllerGlue) - [MediaPlayerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/MediaPlayerAdapter) - [PlaybackBannerControlGlue](https://developer.android.com/reference/android/support/v17/leanback/media/PlaybackBannerControlGlue) - [PlaybackBaseControlGlue](https://developer.android.com/reference/android/support/v17/leanback/media/PlaybackBaseControlGlue) - [PlaybackControlGlue](https://developer.android.com/reference/android/support/v17/leanback/media/PlaybackControlGlue) - [PlaybackGlue](https://developer.android.com/reference/android/support/v17/leanback/media/PlaybackGlue) - [PlaybackGlue.PlayerCallback](https://developer.android.com/reference/android/support/v17/leanback/media/PlaybackGlue.PlayerCallback) - [PlaybackGlueHost](https://developer.android.com/reference/android/support/v17/leanback/media/PlaybackGlueHost) - [PlaybackGlueHost.HostCallback](https://developer.android.com/reference/android/support/v17/leanback/media/PlaybackGlueHost.HostCallback) - [PlaybackGlueHost.PlayerCallback](https://developer.android.com/reference/android/support/v17/leanback/media/PlaybackGlueHost.PlayerCallback) - [PlaybackTransportControlGlue](https://developer.android.com/reference/android/support/v17/leanback/media/PlaybackTransportControlGlue) - [PlayerAdapter](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter) - [PlayerAdapter.Callback](https://developer.android.com/reference/android/support/v17/leanback/media/PlayerAdapter.Callback)