What is the best way to implement action bar like twitter sample UI Pattern.
Twitter for Android: A closer look at Android’s evolving UI patterns
Pattern 4: Action Bar
http://android-developers.blogspot.com/2010/05/twitter-for-android-closer-look-at.html
You might want to take a look at the source code for the Google I/O 2010 schedule application, which is open source and contains an Action Bar implementation:
http://code.google.com/p/iosched/