【Android】攔截/遮罩返回鍵(BACK KEY)

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) { //監控/攔截/遮罩返回鍵
            return true;
        } else if (keyCode == KeyEvent.KEYCODE_MENU) {
            //監控/攔截菜單鍵
        } else if (keyCode == KeyEvent.KEYCODE_HOME) {
            //由於Home鍵為系統鍵，此處不能捕獲，需要重寫onAttachedToWindow()
        }
        return super.onKeyDown(keyCode, event);
    }