Thanks for your answer Erel
I have a question: If FirsTime is related to the process, because to not destroy the activity goes to FirsTime to False?.
I understand that FirsTime is a variable that activity level (of this layout).
Because when I go into main, at the end of the Activity_Create, FirsTime goes to False , but when entering the second layout is True
thanks
Jesus
Sorry if I did not express well in English