when is onRestoreInstanceState called?

Question

Sorry for my incomprehension, but I am new in the android development.

I have an application with activity A and activity B in it, and I go from activity A to activi

Answer 1

This happens because you are navigating the hard way. If you used the phone's default back button navigation, your onCreate would get the bundle passed in.

To circumvent this issue, I suggest you save your state to shared preferences as well as a back up. When the bundle is null, restore it from the shared preferences.