I found this little cute library, called Folding-Android, which implements a fun type of layout, which adds a folding effect to any layout you nest inside of it. I have ported this for Xamarin.Android for everyone to enjoy.

Find it in Xamarin Component Store and fork it on GitHub!

Here are some sample screenshots showing what it can do:

Folding Horizontally with 2 folds

Folding Vertically

It also has implementations which sub-classes DrawerLayout and SlidingPaneLayout, from Support v4, which adds the effect to their drawer/pane.

DrawerLayout implementation

SlidingPaneLayout implementation