iOS 判断网络状态

//创建网络状态监测管理者

AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManager sharedManager];

//监听改变

[manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {

switch (status) {

case  AFNetworkReachabilityStatusUnknown:

NSLog(@"未知");

break;

case AFNetworkReachabilityStatusNotReachable:

NSLog(@"没有网络");

[MBProgressHUD showError:@"网络不可用，请连接网络"];

break;

case AFNetworkReachabilityStatusReachableViaWWAN:

NSLog(@"3G|4G");

break;

case AFNetworkReachabilityStatusReachableViaWiFi:

NSLog(@"WiFi");

break;

default:

break;

}

}];

[manager startMonitoring];//开始监听

}