How does Android's setDrawingCacheEnabled() work?

Question

I have a UI where the root layout is a RelativeLayout. It has a number of Views, such as fields, buttons, etc.

There are also two other panels that are initially invisib

Answer 1

You may want to build your drawing cache before using it, otherwise It will give you a blank bitmap

  public void someButtonClicked(View view) {
    detailPanel.startAnimation(detailEnterAnimation);
    detailPanel.setVisibility(View.VISIBLE);
    detailPanel.setDrawingCacheEnabled(true);
    detailPanel.buildDrawingCache();  //may be you need to add this?
  }

Answer 2

From Android documentation (http://developer.android.com/reference/android/view/View.html#setDrawingCacheEnabled%28boolean%29):

Enabling the drawing cache is similar to setting a layer when hardware acceleration is turned off. When hardware acceleration is turned on, enabling the drawing cache has no effect on rendering because the system uses a different mechanism for acceleration which ignores the flag. If you want to use a Bitmap for the view, even when hardware acceleration is enabled, see setLayerType(int, android.graphics.Paint) for information on how to enable software and hardware layers.

Maybe this is your case?