title: Android DragShadowBuilder view refresh
body: <p>I'm implementing drag'n'drop feature into my application.
  I'm moving <code>TextView</code> object, and I'm using <code>DragShadowBuilder</code> to build shadow for this textview.<br>
  The question is, is there any way to change textView text while dragging item? I mean in 
  <code>DragEvent.ACTION_DRAG_ENTERED</code> or <code>DragEvent.ACTION_DRAG_LOCATION</code> case?</p>