Android Fragments recreated on orientation change

Question

I'm developing an app that basically has an ActionBar. When my app starts, the Activity creates the fragments and attaches them to each tab, so when I switch I get different views.

The problems arise when I try to rotate the device. After some struggle, I noticed that Android automatically recreates the previously added fragments like this:

SummaryFragment.onCreate(Bundle) line: 79   
FragmentManagerImpl.moveToState(Fragment, int, int, int) line: 795  
FragmentManagerImpl.moveToState(int, int, int, boolean) line: 1032  
FragmentManagerImpl.moveToState(int, boolean) line: 1014    
FragmentManagerImpl.dispatchCreate() line: 1761 
DashboardActivity(Activity).onCreate(Bundle) line: 864  
...

and then I recreate the fragments as usual. So I have the "real" fragments that I expect to work correctly and their "hidden" Android-created counterparts that make my app crash. How can I avoid this behavior? I already tried to call setRetainInstance(false) in the SummaryFragment.

Thank you

Answer 1

You need to check for a savedInstanceState [edit: in your parent activity], and if it exists, don't create your fragments.

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    if (savedInstanceState == null) {
         // Do your oncreate stuff because there is no bundle   
    }
// Do stuff that needs to be done even if there is a saved instance, or do nothing
}