What it is
This repo contains a UIView category called ShrinkTo which will let you easily shrink any view to a point within another view, much like the iOS Mail app.
How to Use
Make sure to link against the QuartzCore framework in your build settings or you'll get linker errors when you try to compile.
shrinkToPoint:inView: on any UIView instance. The latter method takes a point in the second parameter's view coordinate system that specifies where the shrinking view should shrink to.
Thanks to Mike Nachbaur for guides on Core Animation.