How to set listener to send application to background?

Question

Android

The bottom line is that when, while my application is running, someone calls or another application wants to go to the foreground. Then my activity is sent to the background and does not save the data I need. I want to hang a listener on such events and save the state in it. What listener to hang up and where?
PS. Now I save the data in onPause, but for some reason it is not called.

Answer 1

you don't need OnPause use onSaveInstanceState/onRestoreInstanceState