Why is Android O failing with “does not belong to this FragmentManager!”

Question

I have migrated my application to Android O in Android Studio 3

Running on an Android O emulator all my dialogFragments now fail with :-

java.lang.I         


        

Answer 1

I had the same problem, definitely an android bug. It happens when you are showing a fragment from another fragment using it as target. As workaround you can use:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
    getActivity().getFragmentManager().beginTransaction().add(dialogFrag, "dialog").commit();
else
    getChildFragmentManager().beginTransaction().add(dialogFrag,"dialog").commit();