# MediaRouteProvider.Callback

added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions)  
belongs to Maven artifact com.android.support:mediarouter-v7:28.0.0-alpha1  
Summary:[Ctors](https://developer.android.com/reference/android/support/v7/media/MediaRouteProvider.Callback#pubctors)\|[Methods](https://developer.android.com/reference/android/support/v7/media/MediaRouteProvider.Callback#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/support/v7/media/MediaRouteProvider.Callback#inhmethods)\|[\[Expand All\]](https://developer.android.com/reference/android/support/v7/media/MediaRouteProvider.Callback#)  

# MediaRouteProvider.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package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack).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

abstract
class
MediaRouteProvider.Callback
`  
`

extends Object


``


`

|---|------------------------------------------------------|
| java.lang.Object                                        ||
| ↳ | android.support.v7.media.MediaRouteProvider.Callback |

<br />

*** ** * ** ***

Callback which is invoked when route information becomes available or changes.

## Summary

|                                                                       ### Public constructors                                                                        ||
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|
| ` `[MediaRouteProvider.Callback](https://developer.android.com/reference/android/support/v7/media/MediaRouteProvider.Callback#MediaRouteProvider.Callback())`() ` |

|                                                                                                                                                                                                                                                                                         ### Public methods                                                                                                                                                                                                                                                                                          ||
|---------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ` void` | ` `[onDescriptorChanged](https://developer.android.com/reference/android/support/v7/media/MediaRouteProvider.Callback#onDescriptorChanged(android.support.v7.media.MediaRouteProvider, android.support.v7.media.MediaRouteProviderDescriptor))`(`[MediaRouteProvider](https://developer.android.com/reference/android/support/v7/media/MediaRouteProvider)` provider, `[MediaRouteProviderDescriptor](https://developer.android.com/reference/android/support/v7/media/MediaRouteProviderDescriptor)` descriptor) ` Called when information about a route provider and its routes changes. |

| ### Inherited methods |
|-----------------------|---|
| [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v7/media/MediaRouteProvider.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

### MediaRouteProvider.Callback

added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions)  

```
MediaRouteProvider.Callback ()
```

<br />

<br />

## Public methods

### onDescriptorChanged

added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions)  

```
void onDescriptorChanged (MediaRouteProvider provider, 
                MediaRouteProviderDescriptor descriptor)
```

Called when information about a route provider and its routes changes.

<br />

|                                                   Parameters                                                   ||
|--------------|--------------------------------------------------------------------------------------------------|
| `provider`   | `MediaRouteProvider`: The media route provider that changed, never null. <br />                  |
| `descriptor` | `MediaRouteProviderDescriptor`: The new media route provider descriptor, or null if none. <br /> |

-

  ## Interfaces

  - [RemotePlaybackClient.OnMessageReceivedListener](https://developer.android.com/reference/android/support/v7/media/RemotePlaybackClient.OnMessageReceivedListener)
-

  ## Classes

  - [MediaControlIntent](https://developer.android.com/reference/android/support/v7/media/MediaControlIntent)
  - [MediaItemMetadata](https://developer.android.com/reference/android/support/v7/media/MediaItemMetadata)
  - [MediaItemStatus](https://developer.android.com/reference/android/support/v7/media/MediaItemStatus)
  - [MediaItemStatus.Builder](https://developer.android.com/reference/android/support/v7/media/MediaItemStatus.Builder)
  - [MediaRouteDescriptor](https://developer.android.com/reference/android/support/v7/media/MediaRouteDescriptor)
  - [MediaRouteDescriptor.Builder](https://developer.android.com/reference/android/support/v7/media/MediaRouteDescriptor.Builder)
  - [MediaRouteDiscoveryRequest](https://developer.android.com/reference/android/support/v7/media/MediaRouteDiscoveryRequest)
  - [MediaRouteProvider](https://developer.android.com/reference/android/support/v7/media/MediaRouteProvider)
  - [MediaRouteProvider.Callback](https://developer.android.com/reference/android/support/v7/media/MediaRouteProvider.Callback)
  - [MediaRouteProvider.ProviderMetadata](https://developer.android.com/reference/android/support/v7/media/MediaRouteProvider.ProviderMetadata)
  - [MediaRouteProvider.RouteController](https://developer.android.com/reference/android/support/v7/media/MediaRouteProvider.RouteController)
  - [MediaRouteProviderDescriptor](https://developer.android.com/reference/android/support/v7/media/MediaRouteProviderDescriptor)
  - [MediaRouteProviderDescriptor.Builder](https://developer.android.com/reference/android/support/v7/media/MediaRouteProviderDescriptor.Builder)
  - [MediaRouteProviderService](https://developer.android.com/reference/android/support/v7/media/MediaRouteProviderService)
  - [MediaRouter](https://developer.android.com/reference/android/support/v7/media/MediaRouter)
  - [MediaRouter.Callback](https://developer.android.com/reference/android/support/v7/media/MediaRouter.Callback)
  - [MediaRouter.ControlRequestCallback](https://developer.android.com/reference/android/support/v7/media/MediaRouter.ControlRequestCallback)
  - [MediaRouter.ProviderInfo](https://developer.android.com/reference/android/support/v7/media/MediaRouter.ProviderInfo)
  - [MediaRouter.RouteInfo](https://developer.android.com/reference/android/support/v7/media/MediaRouter.RouteInfo)
  - [MediaRouteSelector](https://developer.android.com/reference/android/support/v7/media/MediaRouteSelector)
  - [MediaRouteSelector.Builder](https://developer.android.com/reference/android/support/v7/media/MediaRouteSelector.Builder)
  - [MediaSessionStatus](https://developer.android.com/reference/android/support/v7/media/MediaSessionStatus)
  - [MediaSessionStatus.Builder](https://developer.android.com/reference/android/support/v7/media/MediaSessionStatus.Builder)
  - [RemotePlaybackClient](https://developer.android.com/reference/android/support/v7/media/RemotePlaybackClient)
  - [RemotePlaybackClient.ActionCallback](https://developer.android.com/reference/android/support/v7/media/RemotePlaybackClient.ActionCallback)
  - [RemotePlaybackClient.ItemActionCallback](https://developer.android.com/reference/android/support/v7/media/RemotePlaybackClient.ItemActionCallback)
  - [RemotePlaybackClient.SessionActionCallback](https://developer.android.com/reference/android/support/v7/media/RemotePlaybackClient.SessionActionCallback)
  - [RemotePlaybackClient.StatusCallback](https://developer.android.com/reference/android/support/v7/media/RemotePlaybackClient.StatusCallback)