title: RelativeLayout onDraw
body: <p>I create a subclass of RelativeLayout，the use of it in the layout file.In the layout file also defines some components widget.Overwrite the OnDraw painted a picture，The picture can not draw on the top, but the control block.<br>
  Like this:  </p>
  
  <p><a href="https://i.stack.imgur.com/hJFHS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hJFHS.png" alt="enter image description here"></a></p>
  
  <p>How do I get the picture to the layout of the above.the picture is and move according to the finger movement..thanks.</p>