Question

I run my android app, and when I press home button and come back to the app. Everything is maintained (the score, the state ..etc). assume it goes to OnPause the OnResume.

However, when I get a phone call while running my app, then my app state is reset (score is gone ..etc).

Why is that? Shouldn’t it go through the onPause/OnResume as well?

Answer 1

When you get a phone call, it does go through onPause and onStop and when it is brought to the front again it goes through onStart and onResume. It may also be going through onDestroy which will cause it to go through onCreate when you bring it back. Suggest putting Log statements in each of the lifecycle methods to see which are getting called (or breakpoints in the debugger). Then you’ll know what approach to take to resume your game.

In reality, you should implement the app such that it can go through onDestroy and recover when starting up again in the way you want.