“Can not perform this action after onSaveInstanceState” - why am I getting this exception from my activity's onResume method?

Question

My activity invokes the camera with the ACTION_IMAGE_CAPTURE intent. If the camera activity returns succesfully, I set a flag in the onActivityResult callback, and based on

Answer 1

I was always getting this when I tried to show fragment in onActivityForResult() method, so the problem was next:

1. My Activity is paused and stopped, which means, that onSaveInstanceState() was called already (for both pre-Honeycomb and post-Honeycomb devices).
2. In case of any result I made transaction to show/hide fragment, which causes this IllegalStateException.

What I made is next:

1. Added value for determining if action I want was done (e.g. taking photo from camere - isPhotoTaken) - it can be boolean or integer value depending how much different transactions you need.
2. In overriden onResumeFragments() method I checked for my value and after made fragment transactions I needed. In this case commit() was not done after onSaveInstanceState, as state was returned in onResumeFragments() method.