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Summary: Constants | Inherited Constants | Methods | Inherited Methods

BluetoothHearingAid

public final class BluetoothHearingAid
extends Object implements BluetoothProfile

java.lang.Object
↳	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
`String`	`ACTION_CONNECTION_STATE_CHANGED` Intent used to broadcast the change in connection state of the Hearing Aid profile.

Inherited constants

From interface android.bluetooth.BluetoothProfile

`int`	`A2DP` A2DP profile.
`String`	`EXTRA_PREVIOUS_STATE` Extra for the connection state intents of the individual profiles.
`String`	`EXTRA_STATE` Extra for the connection state intents of the individual profiles.
`int`	`GATT` GATT
`int`	`GATT_SERVER` GATT_SERVER
`int`	`HEADSET` Headset and Handsfree profile
`int`	`HEALTH` This constant is deprecated. Health Device Profile (HDP) and MCAP protocol are no longer used. New apps should use Bluetooth Low Energy based solutions such as `BluetoothGatt`, `BluetoothAdapter#listenUsingL2capChannel()`, or `BluetoothDevice#createL2capChannel(int)`
`int`	`HEARING_AID` Hearing Aid Device
`int`	`HID_DEVICE` HID Device
`int`	`SAP`
`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
`List<BluetoothDevice>`	`getConnectedDevices()` Get connected devices for this specific profile.
`int`	`getConnectionState(BluetoothDevice device)` Get the current connection state of the profile Requires `Manifest.permission.BLUETOOTH`
`List<BluetoothDevice>`	`getDevicesMatchingConnectionStates(int[] states)` Get a list of devices that match any of the given connection states.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

From interface


        
          android.bluetooth.BluetoothProfile

`abstract List<BluetoothDevice>`	`getConnectedDevices()` Get connected devices for this specific profile.
`abstract int`	`getConnectionState(BluetoothDevice device)` Get the current connection state of the profile Requires `Manifest.permission.BLUETOOTH`
`abstract List<BluetoothDevice>`	`getDevicesMatchingConnectionStates(int[] states)` Get a list of devices that match any of the given connection states.

Constants

ACTION_CONNECTION_STATE_CHANGED

public static final String ACTION_CONNECTION_STATE_CHANGED

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:

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

BluetoothProfile.EXTRA_STATE or BluetoothProfile.EXTRA_PREVIOUS_STATE can be any of BluetoothProfile.STATE_DISCONNECTED, BluetoothProfile.STATE_CONNECTING, BluetoothProfile.STATE_CONNECTED, BluetoothProfile.STATE_DISCONNECTING.

Requires Manifest.permission.BLUETOOTH permission to receive.

Constant Value: "android.bluetooth.hearingaid.profile.action.CONNECTION_STATE_CHANGED"

Public methods

getConnectedDevices

public List<BluetoothDevice> getConnectedDevices ()

Get connected devices for this specific profile.

Return the set of devices which are in state STATE_CONNECTED
Requires Manifest.permission.BLUETOOTH

Returns
`List<BluetoothDevice>`	This value cannot be `null`.

getConnectionState

public int getConnectionState (BluetoothDevice device)

Get the current connection state of the profile
Requires Manifest.permission.BLUETOOTH

Parameters
`device`	`BluetoothDevice`: This value cannot be `null`.

Returns
`int`	Value is `BluetoothProfile.STATE_DISCONNECTED`, `BluetoothProfile.STATE_CONNECTING`, `BluetoothProfile.STATE_CONNECTED`, or `BluetoothProfile.STATE_DISCONNECTING`

getDevicesMatchingConnectionStates

public List<BluetoothDevice> getDevicesMatchingConnectionStates (int[] states)

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.
Requires Manifest.permission.BLUETOOTH

Parameters
`states`	`int`: This value cannot be `null`.

Returns
`List<BluetoothDevice>`	This value cannot be `null`.

Interfaces

Classes

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BluetoothHearingAid

Summary

Constants

Inherited constants

Public methods

Inherited methods

Constants

ACTION_CONNECTION_STATE_CHANGED

Public methods

getConnectedDevices

getConnectionState

getDevicesMatchingConnectionStates