CameraManager.AvailabilityCallback

public static abstract class CameraManager.AvailabilityCallback
extends Object

java.lang.Object
↳	android.hardware.camera2.CameraManager.AvailabilityCallback

A callback for camera devices becoming available or unavailable to open.

Cameras become available when they are no longer in use, or when a new removable camera is connected. They become unavailable when some application or service starts using a camera, or when a removable camera is disconnected.

Extend this callback and pass an instance of the subclass to CameraManager#registerAvailabilityCallback to be notified of such availability changes.

See also:

CameraManager.registerAvailabilityCallback(CameraManager.AvailabilityCallback, Handler)

Summary

Public constructors
`CameraManager.AvailabilityCallback()`

Public methods
`void`	`onCameraAvailable(String cameraId)` A new camera has become available to use.
`void`	`onCameraUnavailable(String cameraId)` A previously-available camera has become unavailable for use.

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.

Public constructors

CameraManager.AvailabilityCallback

public CameraManager.AvailabilityCallback ()

Public methods

onCameraAvailable

Added in API level 21

public void onCameraAvailable (String cameraId)

A new camera has become available to use.

The default implementation of this method does nothing.

Parameters
`cameraId`	`String`: The unique identifier of the new camera. This value must never be `null`.

onCameraUnavailable

Added in API level 21

public void onCameraUnavailable (String cameraId)

A previously-available camera has become unavailable for use.

If an application had an active CameraDevice instance for the now-disconnected camera, that application will receive a CameraDevice.StateCallback#onDisconnected.

The default implementation of this method does nothing.

Parameters
`cameraId`	`String`: The unique identifier of the disconnected camera. This value must never be `null`.