Android, Finish all activities

Question

I need to finish all the activities running in an Android application when an exit button is clicked. How can I do that?

What I want:

1. An option menu on screen with an EXIT option.
2. When I click the Exit menu, the application should close.

Answer 1

I don't understand the people who say that this should not be done. Closing an activity can be done quite easily using the built in method to do so.

There is no place in the official documentation that says this should not be done.

For those who think it should not be done for any purpose, maybe you can't think of a reason to do so. There are plenty of legitimate reasons to do this. And since it is a method built in to the Android code.. Google has also decided that you might need to depending on your use. Not all of us only create consumer applications for Android.

So to accomplish this task..shutting down all of the activities in your stack

public void quitApp(){
      this.finishAffinity();
}

I created a kiosk app that was run as the default launcher. So I needed a way to exit the app to get to settings or other apps on the device. So in an admin Activity, I placed a pin number pad.. after the user inputs the correct pin, the app needed to exit to the original launcher. I used above code.