Android: Detect physical buttons, back pressed, menu pressed.

Any2Activity.java

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
  if (keyCode == KeyEvent.KEYCODE_MENU) {
    // MENU pressed
    return true;
  }
  return super.onKeyDown(keyCode, event);
}

AnyActivity.java

@Override
public void onBackPressed() {
  // super.onBackPressed(); // quit immediately
  openQuitDialog();
}