# MediaSessionManager.OnActiveSessionsChangedListener

Added in[API level 21](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)  

# MediaSessionManager.OnActiveSessionsChangedListener

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[Kotlin](https://developer.android.com/reference/kotlin/android/media/session/MediaSessionManager.OnActiveSessionsChangedListener "View this page in Kotlin")\|Java

`
public
static


interface
MediaSessionManager.OnActiveSessionsChangedListener
`  
`


`

|---------------------------------------------------------------------------|
| android.media.session.MediaSessionManager.OnActiveSessionsChangedListener |

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Listens for changes to the list of active sessions. This can be added using[MediaSessionManager.addOnActiveSessionsChangedListener(OnActiveSessionsChangedListener, ComponentName)](https://developer.android.com/reference/android/media/session/MediaSessionManager#addOnActiveSessionsChangedListener(android.media.session.MediaSessionManager.OnActiveSessionsChangedListener,%20android.content.ComponentName)).

## Summary

|                                                                                                                                                                                                          ### Public methods                                                                                                                                                                                                           ||
|------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ` abstract void` | ` `[onActiveSessionsChanged](https://developer.android.com/reference/android/media/session/MediaSessionManager.OnActiveSessionsChangedListener#onActiveSessionsChanged(java.util.List<android.media.session.MediaController>))`(`[List](https://developer.android.com/reference/java/util/List)`<`[MediaController](https://developer.android.com/reference/android/media/session/MediaController)`> controllers) ` |

## Public methods

### onActiveSessionsChanged

Added in[API level 21](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)  

```
public abstract void onActiveSessionsChanged (List<MediaController> controllers)
```

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|                       Parameters                       ||
|---------------|-----------------------------------------|
| `controllers` | `List`: This value may be`null`. <br /> |