记录AFNetworkingActivityIndicatorM

今天阅读了源码发现这个statusbar小风火轮是一句代码就可以了，于是就测试了下，发现并没有，后面看了下，Display the network activity indicator to provide feedback when your app accesses the network for more than a couple of seconds. If the operation finishes sooner than that, you don’t have to show the network activity indicator, because the indicator is likely to disappear before users notice its presence.发现了这句话，就是网速慢了，就可以看到小风火轮了