IOS判断运营商网络类型2G/3G/4G/WIFI/是否有网络

typedef enum {

    NetWorkType_None = 0,

    NetWorkType_WIFI,

    NetWorkType_2G,

    NetWorkType_3G,

    NetWorkType_4G,

} NetWorkType;

- (NetWorkType)getType

{

    UIApplication *application = [UIApplicationsharedApplication];

    NSArray *subviews = [[[application valueForKey:@"statusBar"] valueForKey:@"foregroundView"]subviews];

    NSNumber *dataNetWorkItemView = nil;

    for (id subViewin subviews) {

        if ([subViewisKindOfClass:[NSClassFromString(@"UIStatusBarDataNetworkItemView")class]]) {

            dataNetWorkItemView = subView;

            break;

        }

    }

    NetWorkType networkType = NetWorkType_None;

    switch ([[dataNetWorkItemView valueForKey:@"dataNetworkType"]integerValue]) {

        case 0:

            NSLog(@"No wifi or cellular");

            networkType = NetWorkType_None;

            break;

            

        case 1:

            NSLog(@"2G");

            networkType = NetWorkType_2G;

            break;

            

        case 2:

            NSLog(@"3G");

            networkType = NetWorkType_3G;

            break;

        case 3:

            networkType = NetWorkType_4G;

            break;

        default:

            NSLog(@"Wifi");

            networkType = NetWorkType_WIFI;

            break;

    }

    return networkType;

}

 NetWorkType n = [selfgetType];

    NSString *string;

    

    if (n ==NetWorkType_None)

    {

        NSLog(@"NotReachable");

        string = @"N/A";

    }

    elseif (n ==NetWorkType_WIFI)

    {

        NSLog(@"ReachableViaWiFi");

        string = @"Wifi";

    }

    elseif (n ==NetWorkType_2G)

    {

        NSLog(@"ReachableVia3G");

        string = @"2G";

    }

    elseif (n ==NetWorkType_3G)

    {

        NSLog(@"ReachableVia2G");

        string = @"3G";

    }

    else

    {

        NSLog(@"ReachableVia4G");

        string = @"4G";

    }

//以下是swift版本判断网络状态