title: How to get bitmap from imagebutton
body: <p>I have <code>ImageButton</code> when click on it gallery will appear for pick an image and send <code>bitmap</code> back to show on this <code>ImageButton</code>.
  But I have to get <code>bitmap</code> that has been shown on this ImageButton and then save it into  database as <code>byte[]</code>  </p>