title: what is the meaning of ImageView.ScaleType="MATRIX" : Android
body: <p>I know about the <code>matrix</code>, its structure and working about image view's scale-type. but,</p>
  
  <ol>
  <li><p>I can't find the exact meaning of <code>ImageView.ScaleType="MATRIX"</code>. By declaring this, what exactly happens while drawing the image view.</p></li>
  <li><p>When can I use <code>ImageView.ScaleType="MATRIX"</code> ?</p></li>
  <li><p>How does it differ from <code>FIT_END</code> &amp; <code>FIT_START</code></p></li>
  </ol>
  
  <p>I googled about it and also referred the <a href="http://developer.android.com/intl/ja/reference/android/widget/ImageView.ScaleType.html">official link</a> but was not able to find the exact answer. </p>