title: Android loading dots animation view
body: <p>I would like to create a loading indicator containing 3\4 dots.
  the dots will be horizontally ordered, one after the other, and will appear sequentially until the lat dot, and then disappear and all over again.</p>
  
  <p>is there an Android way to create it without using threads or dirty solution?
  like animation, animation set \ list and etc.</p>
  
  <p>link will be much appreciated.</p>
  
  <p>thanks. </p>