Java android.view ViewTreeObserver fields, constructors, methods, implement or subclass

Example usage for Java android.view ViewTreeObserver fields, constructors, methods, implement or subclass

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Introduction

In this page you can find the methods, fields and constructors for android.view ViewTreeObserver.

The text is from its open source code.

Method

voidaddOnDrawListener(OnDrawListener listener)

Register a callback to be invoked when the view tree is about to be drawn.

Note: this method cannot be invoked from android.view.ViewTreeObserver.OnDrawListener#onDraw() .

voidaddOnGlobalFocusChangeListener(OnGlobalFocusChangeListener listener)
Register a callback to be invoked when the focus state within the view tree changes.
voidaddOnGlobalLayoutListener(OnGlobalLayoutListener listener)
Register a callback to be invoked when the global layout state or the visibility of views within the view tree changes
voidaddOnPreDrawListener(OnPreDrawListener listener)
Register a callback to be invoked when the view tree is about to be drawn
voidaddOnScrollChangedListener(OnScrollChangedListener listener)
Register a callback to be invoked when a view has been scrolled.
voidaddOnTouchModeChangeListener(OnTouchModeChangeListener listener)
Register a callback to be invoked when the invoked when the touch mode changes.
voidaddOnWindowFocusChangeListener(OnWindowFocusChangeListener listener)
Register a callback to be invoked when the window focus state within the view tree changes.
booleanisAlive()
Indicates whether this ViewTreeObserver is alive.
voidremoveGlobalOnLayoutListener(OnGlobalLayoutListener victim)
Remove a previously installed global layout callback
voidremoveOnDrawListener(OnDrawListener victim)

Remove a previously installed pre-draw callback.

Note: this method cannot be invoked from android.view.ViewTreeObserver.OnDrawListener#onDraw() .

voidremoveOnGlobalFocusChangeListener(OnGlobalFocusChangeListener victim)
Remove a previously installed focus change callback.
voidremoveOnGlobalLayoutListener(OnGlobalLayoutListener victim)
Remove a previously installed global layout callback
voidremoveOnPreDrawListener(OnPreDrawListener victim)
Remove a previously installed pre-draw callback
voidremoveOnTouchModeChangeListener(OnTouchModeChangeListener victim)
Remove a previously installed touch mode change callback