Floating bubbles like game center home screen

Question

Tried to find everywhere a similar answer but without satisfaction. I want to make some button inside a floating bubble like the home screen on the notification center. I guess apple uses UIKitDynamic to make some effect but can't find the right path.

Do they use Quartz Core or they use Core Animation framework?

I know probably is a silly question but in this site no one asked... (I guess)

Thanks a lot.

Ciao ciao :)

Answer 1

Check this Github project: WobbleBubbleButton

And these SO pages: first and second