Besides this, you can also keep your starred sessions in sync between your phone and tablet using Android's cloud to device messaging framework. This part of code is heavily inspired by the Google I/O session of Xavier Ducrohet and Brad Abrams on Android + App Engine: A Developer's Dream Combination.
UPDATE: The action bar pattern was implemented using the Action Bar Compatibility sample from the Android SDK. This should also give a better experience on the forthcoming Ice Cream Sandwich handsets/tablets.
Again, all sources can be found on Google code.