title: Android Reveal Animation to start an Activity
body: <p>how can I use Reveal Animation between two activities?? There's a lot of information and examples about how to use it to start a view inside an Activity, but I want to click a button and start a Reveal Animation to open the next Activity. 
  I tried including the second layout inside the first one and setting it Invisible, and then reveal it when the button is clicked. But it doesn't work fine.  I'm wondering if I can simply define the Reveal animation as an XML, but I wouldn't know how to.
  Thanks</p>