button - Detecting physical Menu key press in Android

Question

I am trying to detect when the physical Menu button on my Android phone has been pressed. I though the code below would work but it does not. Where am I going wrong please?

The error returned is 'Illegal modifier for parameter onKeyDown; only final is permitted'

public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_MENU) {
        // Do Stuff
    } else {
        return super.onKeyDown(keyCode, event);
    }
}

question from:https://stackoverflow.com/questions/4239880/detecting-physical-menu-key-press-in-android

Answer 1

I'd look for an up key event, rather than a down event, with onKeyUp.

public boolean onKeyUp(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_MENU) {
        // ........
        return true;
    }
    return super.onKeyUp(keyCode, event);
}

We return true because we're handling the event; return false if you want the system to handle the event too.

You can do all of this in your Activity instance too because Activity is a known indirect subclass of KeyEvent.