Added in API level 29

BluetoothHearingAid

class BluetoothHearingAid : BluetoothProfile
kotlin.Any
   ↳ android.bluetooth.BluetoothHearingAid

This class provides the public APIs to control the Hearing Aid profile.

BluetoothHearingAid is a proxy object for controlling the Bluetooth Hearing Aid Service via IPC. Use BluetoothAdapter#getProfileProxy to get the BluetoothHearingAid proxy object.

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

Summary

Constants
static String

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

Inherited constants
Public methods
MutableList<BluetoothDevice!>

Get connected devices for this specific profile.

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).

MutableList<BluetoothDevice!>

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

Constants

ACTION_CONNECTION_STATE_CHANGED

Added in API level 29
static val ACTION_CONNECTION_STATE_CHANGED: String

Intent used to broadcast the change in connection state of the Hearing Aid 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.S

This intent will have 3 extras:

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.hearingaid.profile.action.CONNECTION_STATE_CHANGED"

Public methods

getConnectedDevices

Added in API level 29
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.

getConnectionState

Added in API level 29
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: 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 29
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.