請參考 http://iosmaster.pixnet.net/blog/post/164527014-ios-7-iphone-ipad-%E6%A1%8C%E5%B8%83%E8%A7%A3%E6%9E%90%E5%BA%A6%E8%A8%AD%E5%AE%9A%E6%95%99%E5%AD%B8%E8%A9%B3%E8%A7%A3
