AccessibilityButtonController.AccessibilityButtonCallback

Kotlin |Java

public static abstract class AccessibilityButtonController.AccessibilityButtonCallback
extends Object

java.lang.Object
↳	android.accessibilityservice.AccessibilityButtonController.AccessibilityButtonCallback

Callback for interaction with and changes to state of the accessibility button within the system's navigation area.

Summary

Public constructors
`AccessibilityButtonCallback()`

Public methods
`void`	`onAvailabilityChanged(AccessibilityButtonController controller, boolean available)` Called when the availability of the accessibility button in the system's navigation area has changed.
`void`	`onClicked(AccessibilityButtonController controller)` Called when the accessibility button in the system's navigation area is clicked.

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 timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public constructors

AccessibilityButtonCallback

public AccessibilityButtonCallback ()

Public methods

onAvailabilityChanged

Added in API level 26

public void onAvailabilityChanged (AccessibilityButtonController controller, 
                boolean available)

Called when the availability of the accessibility button in the system's navigation area has changed. The accessibility button may become unavailable because the device shopped showing the button, the button was assigned to another service, or for other reasons.

Parameters
`controller`	`AccessibilityButtonController`: the controller used to register for this callback
`available`	`boolean`: `true` if the accessibility button is available to this service, `false` otherwise

onClicked

Added in API level 26

public void onClicked (AccessibilityButtonController controller)

Called when the accessibility button in the system's navigation area is clicked.

Parameters
`controller`	`AccessibilityButtonController`: the controller used to register for this callback