華為親測有效

 public boolean isNavigationBarShow(){
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            Display display = getActivity().getWindowManager().getDefaultDisplay();
            Point size = new Point();
            Point realSize = new Point();
            display.getSize(size);
            display.getRealSize(realSize);
            boolean
 
  result  = realSize.y!=size.y;
            return realSize.y!=size.y;
        }else {
            boolean menu = ViewConfiguration.get(getActivity()).hasPermanentMenuKey();
            boolean back = KeyCharacterMap.deviceHasKey(KeyEvent.KEYCODE_BACK);
            if(menu || back) {
                return
 
 false;
            }else {
                return true;
            }
        }
    }