How to properly retain a DialogFragment through rotation?

Question

I have a FragmentActivity that hosts a DialogFragment.

The DialogFragment perform network requests and handles Facebook authentication, so I need to retain it during

Answer 1

One of the advantages of using dialogFragment compared to just using alertDialogBuilder is exactly because dialogfragment can automatically recreate itself upon rotation without user intervention.

However, when the dialogfragment does not recreate itself, it is possible that you overwrite onSaveInstanceState but didn't to call super:

@Override
protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState); // <-- must call this if you want to retain dialogFragment upon rotation
    ...
}