title: AnimationSet with setStartOffset not working
body: <p>I'm trying to run few animations (one after another) on a view using <code>AnimationSet</code></p>
  
  <p>Scale from <code>1 --&gt; 0</code> and than from <code>0 --&gt; 1</code></p>
  
  <pre><code>AnimationSet animationSet = new AnimationSet(true);
  animationSet.setInterpolator(new AccelerateDecelerateInterpolator());
  
  ScaleAnimation animation1 = new ScaleAnimation(1f, 0f, 1f, 0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
  animation1.setDuration(500);
  
  ScaleAnimation animation2 = new ScaleAnimation(0f, 1f, 0f, 1f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
  animation2.setDuration(500);
  animation2.setStartOffset(500);
  
  animationSet.addAnimation(animation1);
  animationSet.addAnimation(animation2);
  
  mFloatingActionButton.startAnimation(animationSet);
  </code></pre>
  
  <p>The view just disappear and after a sec appear again. No animation.</p>
  
  <p>If I remove the <code>setStartOffset(...)</code> I can see animation, but not the one I want.</p>
  
  <p>What am I missing here?</p>