我创建了一个新项目,我只是将AFNetworking文件夹拖放到我的项目中,当我运行项目时,我收到了以下错误:
/Users/nadirahmed/Documents/iOS/afnet1/AFNetworking/AFNetworkReachabilityManager.h:40:1: Unknown type name 'NS_ASSUME_NONNULL_BEGIN'
/Users/nadirahmed/Documents/iOS/afnet1/AFNetworking/AFNetworkReachabilityManager.h:51:1: Cannot combine with previous '(error)' declaration specifier
/Users/nadirahmed/Documents/iOS/afnet1/AFNetworking/AFNetworkReachabilityManager.h:80:4: Pointer is missing a nullability type specifier (__nonnull or __nullable)
这是我尝试过的: