title: Circular reveal transition for new activity
body: <p>As per <a href="https://developer.android.com/training/material/animations.html">https://developer.android.com/training/material/animations.html</a></p>
  
  <blockquote>
    <p>The <code>ViewAnimationUtils.createCircularReveal()</code> method enables you to
    animate a clipping circle to reveal or hide a view.</p>
    
    <p>To reveal a previously invisible view using this effect:</p>
  
  <pre><code>// previously invisible view
  View myView = findViewById(R.id.my_view);
  
  // get the center for the clipping circle
  int cx = (myView.getLeft() + myView.getRight()) / 2;
  int cy = (myView.getTop() + myView.getBottom()) / 2;
  
  // get the final radius for the clipping circle
  int finalRadius = Math.max(myView.getWidth(), myView.getHeight());
  
  // create the animator for this view (the start radius is zero)
  Animator anim =
      ViewAnimationUtils.createCircularReveal(myView, cx, cy, 0, finalRadius);
  
  // make the view visible and start the animation
  myView.setVisibility(View.VISIBLE);
  anim.start();
  </code></pre>
  </blockquote>
  
  <p>This is meant to reveal a view. How can I use this to circularly reveal an entire activity, without any shared elements?</p>
  
  <p>Specifically, I'd like my searchActivity to circularly reveal from the search action button in the toolbar.</p>