# MediaBrowser.SubscriptionCallback
Added in[API level 21](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
Summary:[Ctors](https://developer.android.com/reference/android/media/browse/MediaBrowser.SubscriptionCallback#pubctors)\|[Methods](https://developer.android.com/reference/android/media/browse/MediaBrowser.SubscriptionCallback#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/media/browse/MediaBrowser.SubscriptionCallback#inhmethods)
# MediaBrowser.SubscriptionCallback
*** ** * ** ***
[Kotlin](https://developer.android.com/reference/kotlin/android/media/browse/MediaBrowser.SubscriptionCallback "View this page in Kotlin")\|Java
`
public
static
abstract
class
MediaBrowser.SubscriptionCallback
`
`
extends `[Object](https://developer.android.com/reference/java/lang/Object)`
``
`
|---|--------------------------------------------------------|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | android.media.browse.MediaBrowser.SubscriptionCallback |
*** ** * ** ***
Callbacks for subscription related events.
## Summary
| ### Public constructors ||
|-------------------------------------------------------------------------------------------------------------------------------------------------------|---|
| ` `[SubscriptionCallback](https://developer.android.com/reference/android/media/browse/MediaBrowser.SubscriptionCallback#SubscriptionCallback())`() ` |
| ### Public methods ||
|---------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ` void` | ` `[onChildrenLoaded](https://developer.android.com/reference/android/media/browse/MediaBrowser.SubscriptionCallback#onChildrenLoaded(java.lang.String,%20java.util.List))`(`[String](https://developer.android.com/reference/java/lang/String)` parentId, `[List](https://developer.android.com/reference/java/util/List)`<`[MediaBrowser.MediaItem](https://developer.android.com/reference/android/media/browse/MediaBrowser.MediaItem)`> children) ` Called when the list of children is loaded or updated. |
| ` void` | ` `[onChildrenLoaded](https://developer.android.com/reference/android/media/browse/MediaBrowser.SubscriptionCallback#onChildrenLoaded(java.lang.String,%20java.util.List,%20android.os.Bundle))`(`[String](https://developer.android.com/reference/java/lang/String)` parentId, `[List](https://developer.android.com/reference/java/util/List)`<`[MediaBrowser.MediaItem](https://developer.android.com/reference/android/media/browse/MediaBrowser.MediaItem)`> children, `[Bundle](https://developer.android.com/reference/android/os/Bundle)` options) ` Called when the list of children is loaded or updated. |
| ` void` | ` `[onError](https://developer.android.com/reference/android/media/browse/MediaBrowser.SubscriptionCallback#onError(java.lang.String))`(`[String](https://developer.android.com/reference/java/lang/String)` parentId) ` Called when the id doesn't exist or other errors in subscribing. |
| ` void` | ` `[onError](https://developer.android.com/reference/android/media/browse/MediaBrowser.SubscriptionCallback#onError(java.lang.String,%20android.os.Bundle))`(`[String](https://developer.android.com/reference/java/lang/String)` parentId, `[Bundle](https://developer.android.com/reference/android/os/Bundle)` options) ` Called when the id doesn't exist or other errors in subscribing. |
| ### Inherited methods |
|-----------------------|---|
| From class` `[java.lang.Object](https://developer.android.com/reference/java/lang/Object)` ` |--------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` `[Object](https://developer.android.com/reference/java/lang/Object) | ` `[clone](https://developer.android.com/reference/java/lang/Object#clone())`() ` Creates and returns a copy of this object. | | ` boolean` | ` `[equals](https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object))`(`[Object](https://developer.android.com/reference/java/lang/Object)` obj) ` Indicates whether some other object is "equal to" this one. | | ` void` | ` `[finalize](https://developer.android.com/reference/java/lang/Object#finalize())`() ` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. | | ` final `[Class](https://developer.android.com/reference/java/lang/Class)`` | ` `[getClass](https://developer.android.com/reference/java/lang/Object#getClass())`() ` Returns the runtime class of this`Object`. | | ` int` | ` `[hashCode](https://developer.android.com/reference/java/lang/Object#hashCode())`() ` Returns a hash code value for the object. | | ` final void` | ` `[notify](https://developer.android.com/reference/java/lang/Object#notify())`() ` Wakes up a single thread that is waiting on this object's monitor. | | ` final void` | ` `[notifyAll](https://developer.android.com/reference/java/lang/Object#notifyAll())`() ` Wakes up all threads that are waiting on this object's monitor. | | ` `[String](https://developer.android.com/reference/java/lang/String) | ` `[toString](https://developer.android.com/reference/java/lang/Object#toString())`() ` Returns a string representation of the object. | | ` final void` | ` `[wait](https://developer.android.com/reference/java/lang/Object#wait(long,%20int))`(long timeoutMillis, int nanos) ` Causes the current thread to wait until it is awakened, typically by being*notified* or*interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` `[wait](https://developer.android.com/reference/java/lang/Object#wait(long))`(long timeoutMillis) ` Causes the current thread to wait until it is awakened, typically by being*notified* or*interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` `[wait](https://developer.android.com/reference/java/lang/Object#wait())`() ` Causes the current thread to wait until it is awakened, typically by being*notified* or*interrupted*. | ||
## Public constructors
### SubscriptionCallback
Added in[API level 21](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public SubscriptionCallback ()
```
## Public methods
### onChildrenLoaded
Added in[API level 21](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public void onChildrenLoaded (String parentId,
List children)
```
Called when the list of children is loaded or updated.
| Parameters ||
|------------|-------------------------------------------------------------------------------------|
| `parentId` | `String`: The media id of the parent media item. This value cannot be`null`.
|
| `children` | `List`: The children which were loaded. This value cannot be`null`.
|
### onChildrenLoaded
Added in[API level 24](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public void onChildrenLoaded (String parentId,
List children,
Bundle options)
```
Called when the list of children is loaded or updated.
| Parameters ||
|------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `parentId` | `String`: The media id of the parent media item. This value cannot be`null`.
|
| `children` | `List`: The children which were loaded. This value cannot be`null`.
|
| `options` | `Bundle`: The bundle of service-specific arguments sent to the media browser service. The contents of this bundle may affect the information returned when browsing. This value cannot be`null`.
|
### onError
Added in[API level 21](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public void onError (String parentId)
```
Called when the id doesn't exist or other errors in subscribing.
If this is called, the subscription remains until[MediaBrowser.unsubscribe](https://developer.android.com/reference/android/media/browse/MediaBrowser#unsubscribe(java.lang.String))called, because some errors may heal themselves.
| Parameters ||
|------------|------------------------------------------------------------------------------------------------------------------------|
| `parentId` | `String`: The media id of the parent media item whose children could not be loaded. This value cannot be`null`.
|
### onError
Added in[API level 24](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public void onError (String parentId,
Bundle options)
```
Called when the id doesn't exist or other errors in subscribing.
If this is called, the subscription remains until[MediaBrowser.unsubscribe](https://developer.android.com/reference/android/media/browse/MediaBrowser#unsubscribe(java.lang.String))called, because some errors may heal themselves.
| Parameters ||
|------------|--------------------------------------------------------------------------------------------------------------------------|
| `parentId` | `String`: The media id of the parent media item whose children could not be loaded. This value cannot be`null`.
|
| `options` | `Bundle`: The bundle of service-specific arguments sent to the media browser service. This value cannot be`null`.
|