Added in API level 31

BluetoothLeAudio

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Kotlin |Java

class BluetoothLeAudio : AutoCloseable, BluetoothProfile

kotlin.Any
↳	android.bluetooth.BluetoothLeAudio

This class provides the public APIs to control the LeAudio profile.

BluetoothLeAudio is a proxy object for controlling the Bluetooth LE Audio Service via IPC. Use BluetoothAdapter.getProfileProxy to get the BluetoothLeAudio proxy object.

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

Summary

Constants
static String	ACTION_LE_AUDIO_CONNECTION_STATE_CHANGED Intent used to broadcast the change in connection state of the LeAudio profile.
static Int	GROUP_ID_INVALID This represents an invalid group ID.

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
MutableList<BluetoothDevice!>	getConnectedDevices() Get connected devices for this specific profile.
BluetoothDevice?	getConnectedGroupLeadDevice(groupId: Int) Get Lead device for the group.
Int	getConnectionState(device: BluetoothDevice) Get the current connection state of the profile 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.
MutableList<BluetoothDevice!>	getDevicesMatchingConnectionStates(states: IntArray) Get a list of devices that match any of the given connection states.
Int	getGroupId(device: BluetoothDevice) Get device group id.

Protected methods
Unit	finalize()

Constants

ACTION_LE_AUDIO_CONNECTION_STATE_CHANGED

Added in API level 31

static val ACTION_LE_AUDIO_CONNECTION_STATE_CHANGED: String

Intent used to broadcast the change in connection state of the LeAudio profile. Please note that in the binaural case, there will be two different LE devices for the left and right side and each device will have their own connection state changes.

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.action.LE_AUDIO_CONNECTION_STATE_CHANGED"

GROUP_ID_INVALID

Added in API level 33

static val GROUP_ID_INVALID: Int

This represents an invalid group ID.

Value: -1

Public methods

getConnectedDevices

Added in API level 31

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!>	This value cannot be null.

getConnectedGroupLeadDevice

Added in API level 33

fun getConnectedGroupLeadDevice(groupId: Int): BluetoothDevice?

Get Lead device for the group.

Lead device is the device that can be used as an active device in the system. Active devices points to the Audio Device for the Le Audio group. This method returns the Lead devices for the connected LE Audio group and this device should be used in the setActiveDevice() method by other parts of the system, which wants to set to active a particular Le Audio group.

Note: getActiveDevice() returns the Lead device for the currently active LE Audio group. Note: When Lead device gets disconnected while Le Audio group is active and has more devices in the group, then Lead device will not change. If Lead device gets disconnected, for the Le Audio group which is not active, a new Lead device will be chosen
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
groupId	Int: The group id.

Return
BluetoothDevice?	group lead device. This value may be null.

getConnectionState

Added in API level 31

fun getConnectionState(device: BluetoothDevice): Int

Get the current connection state of the profile
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: This value cannot be null.

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 31

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: This value cannot be null.

Return
MutableList<BluetoothDevice!>	This value cannot be null.

getGroupId

Added in API level 33

fun getGroupId(device: BluetoothDevice): Int

Get device group id. Devices with same group id belong to same group (i.e left and right earbud)
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: LE Audio capable device This value cannot be null.

Return
Int	group id that this device currently belongs to, GROUP_ID_INVALID when this device does not belong to any group

Protected methods

finalize

Added in API level 31

protected fun finalize(): Unit

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