title: Set image / background source dynamically
body: <p>is there any possibility to set background image dynamically?!</p>
  
  <p>I try to explain what I mean.</p>
  
  <pre><code>String picVariable = getPictureFromServer();
  
  ImageView image = (ImageView)v.findViewById(R.id.dynamic_image);
  
  // I know, that doesn't work, but that's the way I looking for
  image.setBackgroundResource(picVariable); 
  </code></pre>
  
  <p>Thank you in advance,</p>
  
  <p>Mur</p>
  
  <p>Ps.
  I also read <a href="https://stackoverflow.com/questions/3516530/set-source-of-imageview-dynamically-android">this article</a>. It would suggested in one answer, to use java reflection to get a field of the R class by name. But I've never used reflextion before. An example would be very helpfull</p>