ViewGroupOverlay

Class Overview

A group overlay is an extra layer that sits on top of a ViewGroup (the "host view") which is drawn after all other content in that view (including the view group's children). Interaction with the overlay layer is done by adding and removing views and drawables.

ViewGroupOverlay is a subclass of


        
         ViewOverlay

, adding the ability to manage views for overlays on ViewGroups, in addition to the drawable support in ViewOverlay.

Summary

Public Methods
void	add ( View view) Adds a View to the overlay.
void	remove ( View view) Removes the specified View from the overlay.

Public Methods

void

add ( View view)

Adds a View to the overlay.

void

remove ( View view)

Removes the specified View from the overlay.

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Inherited Methods

From class android.view.ViewOverlay

From class java.lang.Object

Object	clone () Creates and returns a copy of this `Object` .
boolean	equals ( Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize () Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class <?>	getClass () Returns the unique instance of `Class` that represents this object's class.
int	hashCode () Returns an integer hash code for this object.
final void	notify () Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll () Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString () Returns a string containing a concise, human-readable description of this object.
final void	wait () Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait (long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait (long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

Public Methods

public void add ( View view)

Added in API level 18

Adds a View to the overlay. The bounds of the added view should be relative to the host view. Any view added to the overlay should be removed when it is no longer needed or no longer visible.

Views in the overlay are visual-only; they do not receive input events and do not participate in focus traversal. Overlay views are intended to be transient, such as might be needed by a temporary animation effect.

If the view has a parent, the view will be removed from that parent before being added to the overlay. Also, if that parent is attached in the current view hierarchy, the view will be repositioned such that it is in the same relative location inside the activity. For example, if the view's current parent lies 100 pixels to the right and 200 pixels down from the origin of the overlay's host view, then the view will be offset by (100, 200).

Parameters

view	The View to be added to the overlay. The added view will be drawn when the overlay is drawn.

public void remove ( View view)

Added in API level 18

Removes the specified View from the overlay.

Parameters

view	The View to be removed from the overlay.

java.lang.Object
↳	android.view.ViewOverlay
	↳	android.view.ViewGroupOverlay

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Enums

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Class Overview

See Also

Summary

Public Methods

public void add ( View view)

Parameters

See Also

public void remove ( View view)

Parameters

See Also