# Session2CommandGroup

Added in[API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)

# Session2CommandGroup

*** ** * ** ***

Kotlin\|[Java](https://developer.android.com/reference/android/media/Session2CommandGroup "View this page in Java")  

```
class Session2CommandGroup : Parcelable
```

|---|--------------------------------------------------------------------------------------------------------------------------|
| [kotlin.Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html)                                           ||
| ↳ | [android.media.Session2CommandGroup](https://developer.android.com/reference/kotlin/android/media/Session2CommandGroup#) |

This API is not generally intended for third party application developers. Use the[AndroidX](https://developer.android.com/jetpack/androidx.html)[Media3 session Library](https://developer.android.com/media/media3/session/control-playback)for consistent behavior across all devices.

A set of[Session2Command](https://developer.android.com/reference/kotlin/android/media/Session2Command)which represents a command group.

## Summary

|                                                                                   Nested classes                                                                                   ||
|---|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   | [Builder](https://developer.android.com/reference/kotlin/android/media/Session2CommandGroup.Builder) This API is not generally intended for third party application developers. |

| Inherited constants ||
|---|---|
| From class[Parcelable](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#) |----------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | [CONTENTS_FILE_DESCRIPTOR](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#CONTENTS_FILE_DESCRIPTOR:kotlin.Int) <br /> Descriptor bit used with[describeContents()](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#describeContents()): indicates that the Parcelable object's flattened representation includes a file descriptor. <br />                                                                                                                                                                                                        | | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | [PARCELABLE_WRITE_RETURN_VALUE](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#PARCELABLE_WRITE_RETURN_VALUE:kotlin.Int) <br /> Flag for use with[writeToParcel](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#writeToParcel(android.os.Parcel,%20kotlin.Int)): the object being written is a return value, that is the result of a function such as "`Parcelable someFunction()`", "`void someFunction(out Parcelable)`", or "`void someFunction(inout Parcelable)`". Some implementations may want to release resources at this point. <br /> | ||

|                                                                                                                                                                                                                                                                                    Public methods                                                                                                                                                                                                                                                                                     ||
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)                                                                                                                                | [describeContents](https://developer.android.com/reference/kotlin/android/media/Session2CommandGroup#describeContents())`()` <br />                                                                                                                                                                                                                                        |
| [MutableSet](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-mutable-set/index.html)\<[Session2Command](https://developer.android.com/reference/kotlin/android/media/Session2Command)!\> | [getCommands](https://developer.android.com/reference/kotlin/android/media/Session2CommandGroup#getCommands())`()` Gets all commands of this command group.                                                                                                                                                                                                                |
| [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)                                                                                                                        | [hasCommand](https://developer.android.com/reference/kotlin/android/media/Session2CommandGroup#hasCommand(android.media.Session2Command))`(`command:` `[Session2Command](https://developer.android.com/reference/kotlin/android/media/Session2Command)`)` Checks whether this command group has a command that matches given`command`.                                     |
| [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)                                                                                                                        | [hasCommand](https://developer.android.com/reference/kotlin/android/media/Session2CommandGroup#hasCommand(kotlin.Int))`(`commandCode:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Checks whether this command group has a command that matches given`commandCode`.                                                                     |
| [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html)                                                                                                                              | [writeToParcel](https://developer.android.com/reference/kotlin/android/media/Session2CommandGroup#writeToParcel(android.os.Parcel,%20kotlin.Int))`(`dest:` `[Parcel](https://developer.android.com/reference/kotlin/android/os/Parcel.html#)`, `flags:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Flatten this object in to a Parcel. |

|                                                                                                                                                                                Properties                                                                                                                                                                                ||
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------|
| static[Parcelable.Creator](https://developer.android.com/reference/kotlin/android/os/Parcelable.Creator.html#)\<[Session2CommandGroup](https://developer.android.com/reference/kotlin/android/media/Session2CommandGroup#)!\> | [CREATOR](https://developer.android.com/reference/kotlin/android/media/Session2CommandGroup#CREATOR:android.os.Parcelable.Creator) <br /> |

## Public methods

### describeContents

Added in[API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
fun describeContents(): Int
```

|                                                                                                                                                                               Return                                                                                                                                                                               ||
|----------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either`0`or[android.os.Parcelable#CONTENTS_FILE_DESCRIPTOR](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#CONTENTS_FILE_DESCRIPTOR:kotlin.Int) |

### getCommands

Added in[API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
fun getCommands(): MutableSet<Session2Command!>
```

Gets all commands of this command group.

|                                                                                                                Return                                                                                                                ||
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------|
| [MutableSet](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-mutable-set/index.html)<[Session2Command](https://developer.android.com/reference/kotlin/android/media/Session2Command)!> | This value cannot be`null`. |

### hasCommand

Added in[API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
fun hasCommand(command: Session2Command): Boolean
```

Checks whether this command group has a command that matches given`command`.

|                                                                    Parameters                                                                     ||
|-----------|----------------------------------------------------------------------------------------------------------------------------------------|
| `command` | [Session2Command](https://developer.android.com/reference/kotlin/android/media/Session2Command):A command to find. Shouldn't be`null`. |

### hasCommand

Added in[API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
fun hasCommand(commandCode: Int): Boolean
```

Checks whether this command group has a command that matches given`commandCode`.

|                                                                                                                                    Parameters                                                                                                                                     ||
|---------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `commandCode` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):A command code to find. Shouldn't be[Session2Command.COMMAND_CODE_CUSTOM](https://developer.android.com/reference/kotlin/android/media/Session2Command#COMMAND_CODE_CUSTOM:kotlin.Int). |

### writeToParcel

Added in[API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
fun writeToParcel(
    dest: Parcel, 
    flags: Int
): Unit
```

Flatten this object in to a Parcel.

|                                                                                                                                                                                                                                                                                     Parameters                                                                                                                                                                                                                                                                                     ||
|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `dest`  | [Parcel](https://developer.android.com/reference/kotlin/android/os/Parcel.html#):This value cannot be`null`.                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| `flags` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):Additional flags about how the object should be written. May be 0 or[PARCELABLE_WRITE_RETURN_VALUE](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#PARCELABLE_WRITE_RETURN_VALUE:kotlin.Int). Value is either`0`or a combination of[android.os.Parcelable#PARCELABLE_WRITE_RETURN_VALUE](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#PARCELABLE_WRITE_RETURN_VALUE:kotlin.Int), and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES |

## Properties

### CREATOR

Added in[API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
static val CREATOR: Parcelable.Creator<Session2CommandGroup!>
```