Android : onAttach() not being called?

Please correct me if I am wrong, but it seems that onAttach() is not being called if I set setRetainInstance(true)!!

That would void what it's being said here http://stackoverflow.com/a/20775934/1815311

and here http://www.androiddesignpatterns.com/2013/04/retaining-objects-across-config-changes.html

and here https://plus.google.com/u/0/+AlexLockwood/posts/etWuiiRiqLf