AccessibilityRequestPreparer

Kotlin |Java

public abstract class AccessibilityRequestPreparer
extends Object

java.lang.Object
↳	android.view.accessibility.AccessibilityRequestPreparer

Object responsible to ensuring that a View is prepared to meet a synchronous request for accessibility data.

Because accessibility requests arrive to Views synchronously on the UI thread, a View that requires information from other processes can struggle to meet those requests. Registering an instance of this class with AccessibilityManager allows a View to be notified when a request is about to be made, and to asynchronously inform the accessibility system when it is ready to meet the request.

Note: This class should only be needed in exceptional situations where a View cannot otherwise synchronously meet the request for accessibility data.

Summary

Constants
`int`	`REQUEST_TYPE_EXTRA_DATA`

Public constructors
`AccessibilityRequestPreparer(View view, int requestTypes)`

Public methods
`View`	`getView()` Get the view this object was created with.
`abstract void`	`onPrepareExtraData(int virtualViewId, String extraDataKey, Bundle args, Message preparationFinishedMessage)` Callback to allow preparation for filling extra data.

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.

Constants

REQUEST_TYPE_EXTRA_DATA

Added in API level 27

public static final int REQUEST_TYPE_EXTRA_DATA

Constant Value: 1 (0x00000001)

Public constructors