“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

you can use the method commitAllowingStateLoss()

but be aware you can lose the state of your activity as you can see in google's android reference which explain the different between the two in the following way

Like commit() but allows the commit to be executed after an activity's state is saved. This is dangerous because the commit can be lost if the activity needs to later be restored from its state, so this should only be used for cases where it is okay for the UI state to change unexpectedly on the user.

from my experience it may cause the addToBackStack method not to work sometimes so you will need to add it manually on the fragment and of course the state won't be saved (textbox text ext.)