The Android Action Bar will now be usable in more Android applications due to the new release of a backward-compatible version of the code that surfaced at the Google I/O developers conference this past May. The code was used in the conference’s official event app and is now being released for free use by Google.
Developers can now integrate the free open-source code into their new and older applications, according to an Aug. 7 post by Chris Banes, of the Android developer relations team, on the Android Developers Blog. The Action Bar code is backward-compatible so it can be added to existing Android apps.