BluetoothA2dp

Kotlin |Java

class BluetoothA2dp : BluetoothProfile

kotlin.Any
↳	android.bluetooth.BluetoothA2dp

This class provides the public APIs to control the Bluetooth A2DP profile.

BluetoothA2dp is a proxy object for controlling the Bluetooth A2DP Service via IPC. Use android.bluetooth.BluetoothAdapter#getProfileProxy to get the BluetoothA2dp proxy object.

Android only supports one connected Bluetooth A2dp device at a time. Each method is protected with its appropriate permission.

Summary

Constants
static String	`ACTION_CONNECTION_STATE_CHANGED` Intent used to broadcast the change in connection state of the A2DP profile.
static String	`ACTION_PLAYING_STATE_CHANGED` Intent used to broadcast the change in the Playing state of the A2DP profile.
static Int	`STATE_NOT_PLAYING` A2DP sink device is NOT streaming music.
static Int	`STATE_PLAYING` A2DP sink device is streaming music.

Inherited constants

From class BluetoothProfile

`Int`	`A2DP` A2DP profile.
`Int`	`CSIP_SET_COORDINATOR` Coordinated Set Identification Profile set coordinator
`String`	`EXTRA_PREVIOUS_STATE` Extra for the connection state intents of the individual profiles. This extra represents the previous connection state of the profile of the Bluetooth device.
`String`	`EXTRA_STATE` Extra for the connection state intents of the individual profiles. This extra represents the current connection state of the profile of the Bluetooth device.
`Int`	`GATT` GATT
`Int`	`GATT_SERVER` GATT_SERVER
`Int`	`HAP_CLIENT`
`Int`	`HEADSET` Headset and Handsfree profile
`Int`	`HEALTH` Health Profile
`Int`	`HEARING_AID` Hearing Aid Device
`Int`	`HID_DEVICE` HID Device
`Int`	`LE_AUDIO` LE Audio Device
`Int`	`SAP` SAP Profile
`Int`	`STATE_CONNECTED` The profile is in connected state
`Int`	`STATE_CONNECTING` The profile is in connecting state
`Int`	`STATE_DISCONNECTED` The profile is in disconnected state
`Int`	`STATE_DISCONNECTING` The profile is in disconnecting state

Public methods
Unit	`finalize()`
MutableList<BluetoothDevice!>!	`getConnectedDevices()` Get connected devices for this specific profile.
Int	`getConnectionState(device: BluetoothDevice!)` Get the current connection state of the profile For apps targeting `Build.VERSION_CODES.S` or or higher, this requires the `Manifest.permission.BLUETOOTH_CONNECT` permission which can be gained with `android.app.Activity#requestPermissions(String[], int)`.
MutableList<BluetoothDevice!>!	`getDevicesMatchingConnectionStates(states: IntArray!)` Get a list of devices that match any of the given connection states.
MutableCollection<BluetoothCodecType!>	`getSupportedCodecTypes()` Returns the list of source codecs that are supported by the current platform.
Boolean	`isA2dpPlaying(device: BluetoothDevice!)` Check if A2DP profile is streaming music.

Constants

ACTION_CONNECTION_STATE_CHANGED

Added in API level 11

static val ACTION_CONNECTION_STATE_CHANGED: String

Intent used to broadcast the change in connection state of the A2DP profile.

This intent will have 3 extras:

EXTRA_STATE - The current state of the profile.
EXTRA_PREVIOUS_STATE- The previous state of the profile.
BluetoothDevice.EXTRA_DEVICE - The remote device.

EXTRA_STATE or EXTRA_PREVIOUS_STATE can be any of STATE_DISCONNECTED, STATE_CONNECTING, STATE_CONNECTED, STATE_DISCONNECTING.
For apps targeting Build.VERSION_CODES.R or lower, this requires the Manifest.permission.BLUETOOTH permission which can be gained with a simple <uses-permission> manifest tag.
For apps targeting Build.VERSION_CODES.S or or higher, this requires the Manifest.permission.BLUETOOTH_CONNECT permission which can be gained with android.app.Activity#requestPermissions(String[], int).
Requires android.Manifest.permission#BLUETOOTH_CONNECT

Value: "android.bluetooth.a2dp.profile.action.CONNECTION_STATE_CHANGED"

ACTION_PLAYING_STATE_CHANGED

Added in API level 11

static val ACTION_PLAYING_STATE_CHANGED: String

Intent used to broadcast the change in the Playing state of the A2DP profile.

This intent will have 3 extras:

EXTRA_STATE - The current state of the profile.
EXTRA_PREVIOUS_STATE- The previous state of the profile.
BluetoothDevice.EXTRA_DEVICE - The remote device.

EXTRA_STATE or EXTRA_PREVIOUS_STATE can be any of STATE_PLAYING, STATE_NOT_PLAYING,
For apps targeting Build.VERSION_CODES.R or lower, this requires the Manifest.permission.BLUETOOTH permission which can be gained with a simple <uses-permission> manifest tag.
For apps targeting Build.VERSION_CODES.S or or higher, this requires the Manifest.permission.BLUETOOTH_CONNECT permission which can be gained with android.app.Activity#requestPermissions(String[], int).
Requires android.Manifest.permission#BLUETOOTH_CONNECT

Value: "android.bluetooth.a2dp.profile.action.PLAYING_STATE_CHANGED"

STATE_NOT_PLAYING

Added in API level 11

static val STATE_NOT_PLAYING: Int

A2DP sink device is NOT streaming music. This state can be one of EXTRA_STATE or EXTRA_PREVIOUS_STATE of ACTION_PLAYING_STATE_CHANGED intent.

Value: 11

STATE_PLAYING

Added in API level 11

static val STATE_PLAYING: Int

A2DP sink device is streaming music. This state can be one of EXTRA_STATE or EXTRA_PREVIOUS_STATE of ACTION_PLAYING_STATE_CHANGED intent.

Value: 10

Public methods

finalize

Added in API level 11

fun finalize(): Unit

Exceptions
`java.lang.Throwable`	the `Exception` raised by this method

getConnectedDevices

Added in API level 11

fun getConnectedDevices(): MutableList<BluetoothDevice!>!

Get connected devices for this specific profile.

Return the set of devices which are in state STATE_CONNECTED
For apps targeting Build.VERSION_CODES.S or or higher, this requires the Manifest.permission.BLUETOOTH_CONNECT permission which can be gained with android.app.Activity#requestPermissions(String[], int).
Requires android.Manifest.permission#BLUETOOTH_CONNECT

Return
`MutableList<BluetoothDevice!>!`	List of devices. The list will be empty on error.

getConnectionState

Added in API level 11

fun getConnectionState(device: BluetoothDevice!): Int

Get the current connection state of the profile
For apps targeting Build.VERSION_CODES.S or or higher, this requires the Manifest.permission.BLUETOOTH_CONNECT permission which can be gained with android.app.Activity#requestPermissions(String[], int).
Requires android.Manifest.permission#BLUETOOTH_CONNECT

Parameters
`device`	BluetoothDevice!: Remote bluetooth device.

Return
`Int`	Value is `android.bluetooth.BluetoothProfile#STATE_DISCONNECTED`, `android.bluetooth.BluetoothProfile#STATE_CONNECTING`, `android.bluetooth.BluetoothProfile#STATE_CONNECTED`, or `android.bluetooth.BluetoothProfile#STATE_DISCONNECTING`

getDevicesMatchingConnectionStates

Added in API level 11

fun getDevicesMatchingConnectionStates(states: IntArray!): MutableList<BluetoothDevice!>!

Get a list of devices that match any of the given connection states.

If none of the devices match any of the given states, an empty list will be returned.
For apps targeting Build.VERSION_CODES.S or or higher, this requires the Manifest.permission.BLUETOOTH_CONNECT permission which can be gained with android.app.Activity#requestPermissions(String[], int).
Requires android.Manifest.permission#BLUETOOTH_CONNECT

Parameters
`states`	IntArray!: Array of states. States can be one of `STATE_CONNECTED`, `STATE_CONNECTING`, `STATE_DISCONNECTED`, `STATE_DISCONNECTING`,

Return
`MutableList<BluetoothDevice!>!`	List of devices. The list will be empty on error.

getSupportedCodecTypes

Added in API level 35

fun getSupportedCodecTypes(): MutableCollection<BluetoothCodecType!>

Returns the list of source codecs that are supported by the current platform.

The list always includes the mandatory SBC codec, and may include optional proprietary codecs.
For apps targeting Build.VERSION_CODES.R or lower, this requires the Manifest.permission.BLUETOOTH permission which can be gained with a simple <uses-permission> manifest tag.
Requires android.Manifest.permission#BLUETOOTH_PRIVILEGED

Return
`MutableCollection<BluetoothCodecType!>`	list of supported source codec types This value cannot be `null`.

isA2dpPlaying

Added in API level 11

fun isA2dpPlaying(device: BluetoothDevice!): Boolean

Check if A2DP profile is streaming music.
For apps targeting Build.VERSION_CODES.R or lower, this requires the Manifest.permission.BLUETOOTH permission which can be gained with a simple <uses-permission> manifest tag.
For apps targeting Build.VERSION_CODES.S or or higher, this requires the Manifest.permission.BLUETOOTH_CONNECT permission which can be gained with android.app.Activity#requestPermissions(String[], int).
Requires android.Manifest.permission#BLUETOOTH_CONNECT

Parameters
`device`	BluetoothDevice!: BluetoothDevice device