Build Play Music-like interface

Question

I'm trying to build and interface that would mimic the recent Google Play Music interface which as a reminder looks like this on a phone

I've already got the DrawerLayout and the Tabs right, but I have no idea how to build the amazing bottom fragment that displays the currently playing song. It mixes two features:

• If you swipe this fragment to the left, it will be replaced by the next song. i think it can be done fairly quickly using a ViewPager and a new Fragmentfor each song, but is it an efficient way to do it?
• If you swipe it up, it will open kind of a drawer containing the player itself (see the above second and third screenshots). How can I get something similar inside my application? I can't find any mention of this inside the docs so I guess it's not really official.

Answer 1

• Use AndroidSlidingUpPanel library. It is pretty easy to use.
• Add a FragmentPager inside this panel for the "Swipe left for the next song" feature. It also can be the "handle" for sliding up panel.
• Add the player layout inside the sliding up panel layout