ios应用内购买

参考：

1、http://troybrant.net/blog/2010/01/in-app-purchases-a-full-walkthrough/

2、http://iosdeveloper.diandian.com/post/2011-08-26/4366441

转载于:https://www.cnblogs.com/foxmin/archive/2012/09/08/2676580.html