ActionBarSherlock support library for Android

            ActionBarSherlock is an extension of the support library designed to facilitate the use of the action bar design pattern across all versions of Android with a single API.

           The library will automatically use the native action bar when appropriate or will automatically wrap a custom implementation around your layouts. This allows you to easily develop an application with an action bar for every version of Android from 2.x and up.

By Jake Wharton
Download: http://actionbarsherlock.com/
Get from GitHub: JakeWharton-ActionBarSherlock