public void packUpSpinnerPopup(){        try {            Class<? extends Spinner> spinner = m_Spinner.getClass();//mSpinner是该类中实例化的Spinner对象            Method method = spinner.getDeclaredMethod("onDetachedFromWindow");//该方法是无参方法            method.setAccessible(true);//使该方法可以被调用            method.invoke(m_Spinner);//mSpinner是该类中实例化的Spinner对象        } catch (Exception e) {            // TODO Auto-generated catch block            Log.i("info", e.toString());            e.printStackTrace();        }    }