Package 

Class PreDrawListener

  • All Implemented Interfaces:
    android.view.ViewTreeObserver.OnPreDrawListener 
    
public final class PreDrawListener
 implements ViewTreeObserver.OnPreDrawListener

    The ViewTreeObserver PreDraw Listener is used to track which views in the hierarchy have been invalidated and need to be redrawn.

    • Method Summary

      Modifier and Type Method Description
      Boolean onPreDraw() On every preDraw call we check the view tree for views that were invalidated
      final Boolean tryRemoveViewFromDirtySet(View view) Check if View is dirty set after any previous onPreDraw pass.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • PreDrawListener

        PreDrawListener(View rootView)
        Parameters:
        rootView - can be any view in the View Tree but most likely it will be a view root.