加载的视图控制器子类

应用介绍

该源码是加载的视图控制器子类，源码StatefulViewController，用SWIFT编写的, 基于内容，加载的视图控制器的子类 作者提供4个常用的类, 适用一般加载的操作流程, • Loading: The content is currently loaded over the network. • Content: The content is available and presented to the user. • Empty: There is currently no content available to display. • Error: An error occured whilst downloading content. 自己可以在此框架上添加自己的东西或者修改