AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManager sharedManager];
    [manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
        switch (status) {
            case AFNetworkReachabilityStatusUnknown:
            {
                UIAlertController *ac = [UIAlertController alertControllerWithTitle:@"ESports" message:@"未識別的網(wǎng)絡(luò)" preferredStyle:UIAlertControllerStyleAlert];
                [ac addAction:[UIAlertAction actionWithTitle:@"確定" style:UIAlertActionStyleCancel handler:nil]];
                break;
            }
               
            case AFNetworkReachabilityStatusNotReachable:
            {
                UIAlertController *ac = [UIAlertController alertControllerWithTitle:@"ESports" message:@"未連接" preferredStyle:UIAlertControllerStyleAlert];
                [ac addAction:[UIAlertAction actionWithTitle:@"確定" style:UIAlertActionStyleCancel handler:nil]];
                break;
            }
            case AFNetworkReachabilityStatusReachableViaWWAN:
               
            {
                UIAlertController *ac = [UIAlertController alertControllerWithTitle:@"ESports" message:@"您確定要使用移動網(wǎng)絡(luò)?" preferredStyle:UIAlertControllerStyleAlert];
                [ac addAction:[UIAlertAction actionWithTitle:@"確定" style:UIAlertActionStyleCancel handler:nil]];
                break;
            }
            case AFNetworkReachabilityStatusReachableViaWiFi:
               
            {
                UIAlertController *ac = [UIAlertController alertControllerWithTitle:@"ESports" message:@"WiFi環(huán)境" preferredStyle:UIAlertControllerStyleAlert];
                [ac addAction:[UIAlertAction actionWithTitle:@"確定" style:UIAlertActionStyleCancel handler:nil]];
                break;
            }
            default:
                break;
        }
    }];
    // 開始監(jiān)聽
    [manager startMonitoring];