title: FloatingActionButton expand into a new activity
body: <p>On the android material design principles page, one of the examples shows a FAB expanding into a new full screen. (Under "Full Screen")</p>
  
  <p><a href="http://www.google.com/design/spec/components/buttons-floating-action-button.html#buttons-floating-action-button-transitions" rel="noreferrer">http://www.google.com/design/spec/components/buttons-floating-action-button.html#buttons-floating-action-button-transitions</a></p>
  
  <p>I've tried to implement the same effect in my app, but with little success.<br>
  I managed to create a FAB that expands into a view using this code as reference: <a href="https://gist.github.com/chris95x8/882b5c5d0aa2096236ba" rel="noreferrer">https://gist.github.com/chris95x8/882b5c5d0aa2096236ba</a>.</p>
  
  <p>It worked, but I was wondering whether I could apply the same effect to an activity transition. I've tried looking it up and playing with it myself but could not find anything that might work.  </p>
  
  <p>I know I could make the FAB expand into a <strong>Fragment</strong> and not a whole new activity, but I'm not sure if that's what being done, and whether that's optimal or not.</p>
  
  <p>And so my question is, is there a way to implement the fab-expanding reveal effect as an activity transition, or is it supposed to just reveal a new fragment?</p>