iOS网络状态判断全

+ (NSString *)networkStatus{
    Reachability *reachability   = [Reachability reachabilityWithHostName:@"www.apple.com"];
    NetworkStatus internetStatus = [reachability currentReachabilityStatus];
    NSString *net = @"WIFI";
    switch (internetStatus) {
        case ReachableViaWiFi:
            net = @"WIFI";
            break;
        case ReachableViaWWAN:
            net = [self getNetType];   //判断具体类型
            break;
        case NotReachable:
            net = @"当前无网路连接";
        default:
            break;
    }
    NSLog(@"net is %@", net);
    return net;
}
 
+ (NSString *)getNetType
{
    CTTelephonyNetworkInfo *info = [[CTTelephonyNetworkInfo alloc] init];
    /// 注意：没有SIM卡，值为空
    NSString *currentStatus;
    NSString *currentNet = @"5G";
    if (@available(iOS 12.1, *)) {
        if (info && [info respondsToSelector:@selector(serviceCurrentRadioAccessTechnology)]) {
            NSDictionary *radioDic = [info serviceCurrentRadioAccessTechnology];
            if (radioDic.allKeys.count) {
                currentStatus = [radioDic objectForKey:radioDic.allKeys[0]];
            }
        }
    }else{
        currentStatus = info.currentRadioAccessTechnology;
    }
    
    if ([currentStatus isEqualToString:CTRadioAccessTechnologyGPRS]) {
        currentNet = @"GPRS";
    }else if ([currentStatus isEqualToString:CTRadioAccessTechnologyEdge]) {
        currentNet = @"2.75G EDGE";
    }else if ([currentStatus isEqualToString:CTRadioAccessTechnologyWCDMA]){
        currentNet = @"3G";
    }else if ([currentStatus isEqualToString:CTRadioAccessTechnologyHSDPA]){
        currentNet = @"3.5G HSDPA";
    }else if ([currentStatus isEqualToString:CTRadioAccessTechnologyHSUPA]){
        currentNet = @"3.5G HSUPA";
    }else if ([currentStatus isEqualToString:CTRadioAccessTechnologyCDMA1x]){
        currentNet = @"2G";
    }else if ([currentStatus isEqualToString:CTRadioAccessTechnologyCDMAEVDORev0]){
        currentNet = @"3G";
    }else if ([currentStatus isEqualToString:CTRadioAccessTechnologyCDMAEVDORevA]){
        currentNet = @"3G";
    }else if ([currentStatus isEqualToString:CTRadioAccessTechnologyCDMAEVDORevB]){
        currentNet = @"3G";
    }else if ([currentStatus isEqualToString:CTRadioAccessTechnologyeHRPD]){
        currentNet = @"HRPD";
    }else if ([currentStatus isEqualToString:CTRadioAccessTechnologyLTE]){
        currentNet = @"4G";
    }else if (@available(iOS 14.1, *)) {
        if ([currentStatus isEqualToString:CTRadioAccessTechnologyNRNSA]){
            currentNet = @"5G NSA";
        }else if ([currentStatus isEqualToString:CTRadioAccessTechnologyNR]){
            currentNet = @"5G";
        }
    }
    return currentNet;
}