Is there any event fired when android View becomes visible within App?

Question

My App contains multiple views (scrollable), one of them is CustomView ( extends View), is there any android event fired when this View comes within visible area.

The ap

Answer 1

Here is one sample code using ViewTreeObserver:

final View viewTemp = convertView;

convertView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
   @Override
   public void onGlobalLayout() {
      int rowHeight = viewTemp.getGlobalVisibleRect();
      ...
   });

Notes:

• I don't know your code and it is not posted. The code viewTemp = convertView is just an example, code from using an Adapter.
• This is a listener when the layout is drawn for whatever reason which is many.