title: android animation : fading out a view and move the views under it to fill it space using smooth animation
body: <p>In my layout i have 3 views that are laid vertically above each other </p>
  
  <pre><code>view1 
  view2
  view3
  </code></pre>
  
  <p>if the user click on view1 it should fade out and when the fading is finished view2 and view3 should move up to fill it place smoothly<br>
  i know how to make the fade out animation for view1  and i know that there is a listener to indicate that the animation is finished  but i can't move view2 and view3 up to fill the remaining space smoothly . maybe its a simple question and maybe posted before but i cant find it . thanks</p>