I\'m trying to implement tabs for navigation in an Android app. Since TabActivity and ActivityGroup are deprecated I would like to implement it using Fragments instead.
I had exactly the same problem and implemented an open source github project that covers stacked tab, back and up navigation and is well tested and documented:
https://github.com/SebastianBaltesObjectCode/PersistentFragmentTabs
This is a simple and small framework for navigation tabs and fragment switching and handling of up and back navigation. Each tab has its own stack of fragments. It uses ActionBarSherlock and is compatible back to API level 8.