Question

Possible Duplicate:
android pressing back button should exit the app

I am trying to close an app using mobile’s back button. Currently I am overriding onKeyPressed method and calling moveTaskToBack(true);. It does hides the app but does not close it. It still remains in the memory. How can I close the app by pressing the back button?

Here is my code

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        moveTaskToBack(true);
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

Answer 1

I think its safer to do this.finish(); instead.

System.exit(0) is not recommended, better let Android do the management of the app.

Check this link : Is quitting an application frowned upon?