Android - How to exit an app when user press the home button?

Question

I want to know how to exit an app when user press the Home Button.

As far as i know that Home Button moves the running app in background and puts Launcher process in

Answer 1

Depending on what you want to do, overriding onUserLeaveHint might be the best bet:

http://developer.android.com/reference/android/app/Activity.html#onUserLeaveHint()

This will let your app know that your app is being exited because the user chose to switch apps (Like by hitting the Home button or selecting a notification). This hint function will not be called if an incoming phone call (or similar) is causing your app to go to the background, as the user didn't initiate that action.