title: Close one activity by swiping from right to left with smooth animation to go to second activity
body: <p>I'd like to have an activity that introduces the app and to be closed you have to swipe it from right to left (perhaps with a smooth animation if It's not too much work), then there's the other part of the app I already have, that is <code>ActionBar tabs + Swipe Views</code>. I've read some Android guides like <a href="http://developer.android.com/training/implementing-navigation/lateral.html#horizontal-paging" rel="nofollow">implement Swipe Views</a> but they weren't my case.
  Could you help me please?
  [With "smooth animation" I mean that the swipe has to follow the finger]</p>