Facebook's new navigation
<p>Facebook recently updated their Android application to include the new navigation slide as the iOS counterpart has.</p>

<p>This is essentially a view that slides in from the left, which is easy enough.</p>

<p>What I don't understand is how they offset the "main view" of the current Activity.  It seems to maintain all its dimensions, but slides to the right, almost entirely off screen.</p>

<p>My first thought was that they create an image of the screen and then slide that off, but that does not seem to be the case as I can see the small section still on the screen update itself.</p>

<p>Does anyone have any ideas? I'm interested in trying it out.</p>
