AFNetworking实时监测网络状态

#import "AFNetworking.h"

AFNetworkReachabilityManager*networkReachbilityManager=[AFNetworkReachabilityManager sharedManager];
[networkReachbilityManager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
               NSLog(@"SSSSS");

switch (status) {
            case AFNetworkReachabilityStatusUnknown:
                       NSLog(@"未知网络");
              break;
            case AFNetworkReachabilityStatusNotReachable:
                        NSLog(@"断网");
              break;
            case AFNetworkReachabilityStatusReachableViaWWAN:
                       NSLog(@"蜂窝数据");
               break;
            case AFNetworkReachabilityStatusReachableViaWiFi:                
                        NSLog(@"WiFi网络");
            break; 
            default:
             break;
     }
}];
[networkReachbilityManager startMonitoring];//别忘了开启