WindowId.FocusObserver


public static abstract class WindowId.FocusObserver
extends Object

java.lang.Object
   ↳ android.view.WindowId.FocusObserver


Subclass for observing changes to the focus state of an WindowId. You should use the same instance of this class for observing multiple WindowId objects, since this class is fairly heavy-weight -- the base class includes all of the mechanisms for connecting to and receiving updates from the window.

Summary

Public constructors

FocusObserver()

Construct a new observer.

Public methods

abstract void onFocusGained(WindowId token)

Called when one of the monitored windows gains input focus.

abstract void onFocusLost(WindowId token)

Called when one of the monitored windows loses input focus.

Inherited methods

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

FocusObserver

Added in API level 18
public FocusObserver ()

Construct a new observer. This observer will be configured so that all of its callbacks are dispatched on the current calling thread.

Public methods

onFocusGained

Added in API level 18
public abstract void onFocusGained (WindowId token)

Called when one of the monitored windows gains input focus.

Parameters
token WindowId

onFocusLost

Added in API level 18
public abstract void onFocusLost (WindowId token)

Called when one of the monitored windows loses input focus.

Parameters
token WindowId