android - Customize back navigation

Question

First of all I read this article but is kind of complicated for me . All I need is to go to an activity I want (navigate if exist in back stack or start it with Intent if it's not ) in onBackPressed() override . should I manage back stack or something else ? if yes how ? and if no what is a simple way for that ?

P.S : I dont use ActionBar

Answer 1

you should override the second activity's onBackPressed() method and add android:launchMode="singleInstance" to your first activity in AndroidManifest.xml this will launch the first activity from backstack or create new if it doesn't exist in backstack.