title: Android change canvas background color without losing any drawings from it
body: <p>I'm trying to find a way to set background of canvas with a color picked up from custom color picker without removing any drawings on it. I'm trying to create an application which can draw on canvas and than save it as png. But when I set a new background to the current canvas, all drawings are gone. I'm using something like this :</p>
  
  <p><code>mCanvas.drawColor(picker.getColor());</code></p>
  
  <p>Any ideas how I can get things to work?</p>