The GlowPadView library is basically Android's Lock Ring (way of screen-unlocking and alarm dismissing), now extended to work on Gingerbread using Jake Wharton's NineOldAndorids Library.
Copyright Nadav Fima © 2012. All rights reserved.
sachin1092/GlowPadView
GlowPadView for Android is a great library to implement Google's lockscreen and new alarmclock style.
Java