title: GridView and ListView still call getView when hidden in ViewFlipper
body: <p>I have a ViewFlipper with multiple ListViews inside. When I scroll through one ListView, <code>BaseAdapter.getView</code> is called multiple times on all the ListViews. The <code>ListViews</code> visibility is GONE. I also tried setting <code>setEnabled(false)</code> and <code>setClickable(false)</code> on the hidden <code>ListViews</code>, yet <code>BaseAdapter.getView</code> is still getting called. 
  This slows down my app.</p>
  
  <p>Why is this happening? How can I prevent the <code>ListView</code> from refreshing it's views?</p>