title: How to get the whole bitmap attached to an ImageView?
body: <p>I tried to get Bitmap attached to an ImageView, using <code>ImageView.getDrawingCache();</code> But I found that the returned Bitmap was not the same as I'd like to get from the ImageView. It was always smaller than the real image.</p>
  
  <p>I had known that, the method <code>getDrawingCache()</code> should not have the view if it is bigger than the screen as the visible portion of the view is only drawn and the cache holds only what is drawn.</p>
  
  <p>Could I get the whole bitmap attached to a ImageView?</p>