title: change background of an ImageView (the old image stays there!)
body: <p>how can I change the background of an ImageView from java? I have an ImageView and at a certain point I need to change the image that it displays (set in the styles). I tried to do it like this:</p>
  
  <pre><code>placeHolder.setImageDrawable(myDrawb);
  </code></pre>
  
  <p>but it looks like the old image remains there and it is partially covered but the new one (which in my case has different shape).</p>
  
  <p>hope you guys can help!</p>
  
  <p>cheers</p>