Property with 'retain (or strong)' attribute must be of object type
AFNetworking 2.0 当Deployment Target 低于6.0时,AFURLConnectionOperation.h,AFURLSessionManager.h
@property (nonatomic, strong) dispatch_queue_t completionQueue;
因为sdk低于6.0时,dispatch_queue_t ARC没有托管,出现提示错误
Property with 'retain (or strong)' attribute must be of object type
改动为
#if OS_OBJECT_USE_OBJC @property (nonatomic, strong) dispatch_queue_t completionQueue; #else @property (nonatomic, assign) dispatch_queue_t completionQueue; #endif