# MediaSessionCompat.QueueItem added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) belongs to Maven artifact com.android.support:support-media-compat:28.0.0-alpha1 Summary:[Constants](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.QueueItem#constants)\|[Inherited Constants](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.QueueItem#inhconstants)\|[Fields](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.QueueItem#lfields)\|[Ctors](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.QueueItem#pubctors)\|[Methods](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.QueueItem#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.QueueItem#inhmethods)\|[\[Expand All\]](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.QueueItem#) # MediaSessionCompat.QueueItem | 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package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack).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 final class MediaSessionCompat.QueueItem ` ` extends Object `` implements `[Parcelable](https://developer.android.com/reference/android/os/Parcelable.html)` ` |---|---------------------------------------------------------------| | java.lang.Object || | ↳ | android.support.v4.media.session.MediaSessionCompat.QueueItem |
*** ** * ** *** A single item that is part of the play queue. It contains a description of the item and its id in the queue. ## Summary | ### Constants || |-------|-----------------------------------------------------------------------------------------------------------------------------------------------------| | `int` | [UNKNOWN_ID](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem#UNKNOWN_ID) This id is reserved. | | ### Inherited constants | |----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.QueueItem#)From interface` android.os.Parcelable ` |-------|----------------------------------------| | `int` | `CONTENTS_FILE_DESCRIPTOR`
| | `int` | `PARCELABLE_WRITE_RETURN_VALUE`
| | | ### Fields || |---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------| | ` public static final `[Creator](https://developer.android.com/reference/android/os/Parcelable.Creator.html)`<`[MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem)`>` | [CREATOR](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem#CREATOR)
| | ### Public constructors || |-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---| | ` `[MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem#MediaSessionCompat.QueueItem(android.support.v4.media.MediaDescriptionCompat, long))`(`[MediaDescriptionCompat](https://developer.android.com/reference/android/support/v4/media/MediaDescriptionCompat)` description, long id) ` Creates a new[MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem). | | ### Public methods || |---------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` int` | ` `[describeContents](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem#describeContents())`() ` | | ` static `[MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem) | ` `[fromQueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem#fromQueueItem(java.lang.Object))`(Object queueItem) ` Creates an instance from a framework[MediaSession.QueueItem](https://developer.android.com/reference/android/media/session/MediaSession.QueueItem.html)object. | | ` static List<`[MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem)`>` | ` `[fromQueueItemList](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem#fromQueueItemList(java.util.List))`(List itemList) ` Creates a list of[MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem)objects from a framework[MediaSession.QueueItem](https://developer.android.com/reference/android/media/session/MediaSession.QueueItem.html)object list. | | ` `[MediaDescriptionCompat](https://developer.android.com/reference/android/support/v4/media/MediaDescriptionCompat) | ` `[getDescription](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem#getDescription())`() ` Gets the description for this item. | | ` long` | ` `[getQueueId](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem#getQueueId())`() ` Gets the queue id for this item. | | ` Object` | ` `[getQueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem#getQueueItem())`() ` Gets the underlying[MediaSession.QueueItem](https://developer.android.com/reference/android/media/session/MediaSession.QueueItem.html). | | ` String` | ` `[toString](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem#toString())`() ` | | ` void` | ` `[writeToParcel](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem#writeToParcel(android.os.Parcel, int))`(`[Parcel](https://developer.android.com/reference/android/os/Parcel.html)` dest, int flags) ` | | ### Inherited methods | |-----------------------|---| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.QueueItem#)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() ` | || | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.QueueItem#)From interface` `[android.os.Parcelable](https://developer.android.com/reference/android/os/Parcelable.html)` ` |------------------|--------------------------------------------------------------------------------------------------------------| | ` abstract int` | ` describeContents() ` | | ` abstract void` | ` writeToParcel(`[Parcel](https://developer.android.com/reference/android/os/Parcel.html)` arg0, int arg1) ` | || ## Constants ### UNKNOWN_ID added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` int UNKNOWN_ID ``` This id is reserved. No items can be explicitly assigned this id.
Constant Value: -1 (0xffffffff) ## Fields ### CREATOR added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` Creator CREATOR ```

## Public constructors ### MediaSessionCompat.QueueItem added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` MediaSessionCompat.QueueItem (MediaDescriptionCompat description, long id) ``` Creates a new[MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem).
| Parameters || |---------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `description` | `MediaDescriptionCompat`: The[MediaDescriptionCompat](https://developer.android.com/reference/android/support/v4/media/MediaDescriptionCompat)for this item.
| | `id` | `long`: An identifier for this item. It must be unique within the play queue and cannot be[UNKNOWN_ID](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem#UNKNOWN_ID).
| ## Public methods ### describeContents added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` int describeContents () ```

| Returns || |-------|--------| | `int` |
| ### fromQueueItem added in[version 25.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` MediaSessionCompat.QueueItem fromQueueItem (Object queueItem) ``` Creates an instance from a framework[MediaSession.QueueItem](https://developer.android.com/reference/android/media/session/MediaSession.QueueItem.html)object. This method is only supported on API 21+. On API 20 and below, it returns null.

| Parameters || |-------------|----------------------------------------------------------------------------------------------------------------------------------------------| | `queueItem` | `Object`: A[MediaSession.QueueItem](https://developer.android.com/reference/android/media/session/MediaSession.QueueItem.html)object.
| | Returns || |---------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem) | An equivalent[MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem)object, or null if none.
| ### fromQueueItemList added in[version 25.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` List fromQueueItemList (List itemList) ``` Creates a list of[MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem)objects from a framework[MediaSession.QueueItem](https://developer.android.com/reference/android/media/session/MediaSession.QueueItem.html)object list. This method is only supported on API 21+. On API 20 and below, it returns null.

| Parameters || |------------|-----------------------------------------------------------------------------------------------------------------------------------------------------| | `itemList` | `List`: A list of[MediaSession.QueueItem](https://developer.android.com/reference/android/media/session/MediaSession.QueueItem.html)objects.
| | Returns || |-------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `List<`[MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem)`>` | An equivalent list of[MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem)objects, or null if none.
| ### getDescription added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` MediaDescriptionCompat getDescription () ``` Gets the description for this item.
| Returns || |-------------------------------------------------------------------------------------------------------------------|--------| | [MediaDescriptionCompat](https://developer.android.com/reference/android/support/v4/media/MediaDescriptionCompat) |
| ### getQueueId added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` long getQueueId () ``` Gets the queue id for this item.
| Returns || |--------|--------| | `long` |
| ### getQueueItem added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` Object getQueueItem () ``` Gets the underlying[MediaSession.QueueItem](https://developer.android.com/reference/android/media/session/MediaSession.QueueItem.html). On builds before[LOLLIPOP](https://developer.android.com/reference/android/os/Build.VERSION_CODES.html#LOLLIPOP)null is returned.
| Returns || |----------|--------------------------------------------------------------------------------------------------------------------------------------------------| | `Object` | The underlying[MediaSession.QueueItem](https://developer.android.com/reference/android/media/session/MediaSession.QueueItem.html)or null.
| ### toString ``` String toString () ```

| Returns || |----------|--------| | `String` |
| ### writeToParcel added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void writeToParcel (Parcel dest, int flags) ```

| Parameters || |---------|-----------------| | `dest` | `Parcel`
| | `flags` | `int`
| - ## Interfaces - [MediaSessionCompat.OnActiveChangeListener](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.OnActiveChangeListener) - ## Classes - [MediaButtonReceiver](https://developer.android.com/reference/android/support/v4/media/session/MediaButtonReceiver) - [MediaControllerCompat](https://developer.android.com/reference/android/support/v4/media/session/MediaControllerCompat) - [MediaControllerCompat.Callback](https://developer.android.com/reference/android/support/v4/media/session/MediaControllerCompat.Callback) - [MediaControllerCompat.PlaybackInfo](https://developer.android.com/reference/android/support/v4/media/session/MediaControllerCompat.PlaybackInfo) - [MediaControllerCompat.TransportControls](https://developer.android.com/reference/android/support/v4/media/session/MediaControllerCompat.TransportControls) - [MediaSessionCompat](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat) - [MediaSessionCompat.Callback](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.Callback) - [MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.QueueItem) - [MediaSessionCompat.Token](https://developer.android.com/reference/android/support/v4/media/session/MediaSessionCompat.Token) - [ParcelableVolumeInfo](https://developer.android.com/reference/android/support/v4/media/session/ParcelableVolumeInfo) - [PlaybackStateCompat](https://developer.android.com/reference/android/support/v4/media/session/PlaybackStateCompat) - [PlaybackStateCompat.Builder](https://developer.android.com/reference/android/support/v4/media/session/PlaybackStateCompat.Builder) - [PlaybackStateCompat.CustomAction](https://developer.android.com/reference/android/support/v4/media/session/PlaybackStateCompat.CustomAction) - [PlaybackStateCompat.CustomAction.Builder](https://developer.android.com/reference/android/support/v4/media/session/PlaybackStateCompat.CustomAction.Builder)