title: Using Fragments to switch activities
body: <p>I'm trying to create a layout that has a stationary footer with activities that slide behind it. I've been told to use Fragments, but that would mean that I would have to convert my already existing Activities to Fragments - right? Here is a diagram of what I'm trying to achieve: <a href="http://i.imgur.com/K8Iao.jpg" rel="nofollow">http://i.imgur.com/K8Iao.jpg</a></p>