title: Android using hand gestures to move and zoom
body: <p>I have an image that gets created once a button gets clicked; it gets created in the middle of the canvas, as I set it to do so:</p>
  
  <pre><code>if(choosenImage != null) {
       c.drawBitmap(choosenImage, 0, 0, null);
  }
  </code></pre>
  
  <p>I want to move and zoom the image using my hand, like drag to to, move it, etc.</p>
  
  <p>How can I do that ? And is that related to <code>onTouchListener</code>?</p>