iOS检测3G或WiFi

Question

我不确定这是否可行,但我有这种情况.

我的UIWebView中显示了一个网站,该网站在UISegmentedController中设置了链接.他们的网站可以检测您是在wifi上还是在3g网络上.

现在,分段控制器指向2个不同的页面:1 - iPhone友好登录屏幕2 - 主页,一旦您登录.

现在问题是:

我可以编程我的应用程序来检测它是WIFI还是3G(我知道你可以这样做),但是根据答案转到第1或第2部分

有点像这样:

if (iPhone device is on 3g) {
    Go to Segment 1;
} else {
    Go to Segment 0;
}

Answer 1

使用Apple在此处提供的代码

Reachability *reachability = [Reachability reachabilityForInternetConnection];
[reachability startNotifier];

NetworkStatus status = [reachability currentReachabilityStatus];

if(status == NotReachable) 
{
    //No internet
}
else if (status == ReachableViaWiFi)
{
    //WiFi
}
else if (status == ReachableViaWWAN) 
{
    //3G
}

Answer 2

如果您不想导入Reachability库或处理通知程序,则可以使用以下简单的同步方法:

typedef enum {
    ConnectionTypeUnknown,
    ConnectionTypeNone,
    ConnectionType3G,
    ConnectionTypeWiFi
} ConnectionType;


+ (ConnectionType)connectionType
{
    SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithName(NULL, "8.8.8.8");
    SCNetworkReachabilityFlags flags;
    BOOL success = SCNetworkReachabilityGetFlags(reachability, &flags);
    CFRelease(reachability);
    if (!success) {
        return ConnectionTypeUnknown;
    }
    BOOL isReachable = ((flags & kSCNetworkReachabilityFlagsReachable) != 0);
    BOOL needsConnection = ((flags & kSCNetworkReachabilityFlagsConnectionRequired) != 0);
    BOOL isNetworkReachable = (isReachable && !needsConnection);

    if (!isNetworkReachable) {
        return ConnectionTypeNone;
    } else if ((flags & kSCNetworkReachabilityFlagsIsWWAN) != 0) {
        return ConnectionType3G;
    } else {
        return ConnectionTypeWiFi;
    }
}

Answer 3

导入Apple的Reachability并试试这个,

#import "Reachability.h"
#import <CoreTelephony/CTTelephonyNetworkInfo.h>

//Try this
Reachability *reachability = [Reachability reachabilityForInternetConnection];
    [reachability startNotifier];

    NetworkStatus status = [reachability currentReachabilityStatus];

    if(status == NotReachable)
    {
       NSLog(@"none");
        //No internet
    }
    else if (status == ReachableViaWiFi)
    {
        NSLog(@"Wifi");
        //WiFi
    }
    else if (status == ReachableViaWWAN)
    {
        NSLog(@"WWAN");


    //connection type
    CTTelephonyNetworkInfo *netinfo = [[CTTelephonyNetworkInfo alloc] init];
    _carrier = [[netinfo subscriberCellularProvider] carrierName];

    if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyGPRS]) {
        NSLog(@"2G");
    } else if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyEdge]) {
        NSLog(@"2G");
    } else if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyWCDMA]) {
        NSLog(@"3G");
    } else if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyHSDPA]) {
        NSLog(@"3G");
    } else if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyHSUPA]) {
        NSLog(@"3G");
    } else if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyCDMA1x]) {
        NSLog(@"2G");
    } else if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyCDMAEVDORev0]) {
        NSLog(@"3G");
    } else if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyCDMAEVDORevA]) {
        NSLog(@"3G");
    } else if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyCDMAEVDORevB]) {
        NSLog(@"3G");
    } else if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyeHRPD]) {
        NSLog(@"3G");
    } else if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyLTE]) {
        NSLog(@"4G");
    }

    }

参考文献(未来链接可能会破裂):

• iOS检测3G或WiFi
• 检测载波连接类型(3G/EDGE/GPRS)
  
• 1G,2G,3G,4G和5G有什么区别？
  
• CDMA2000
  
• 维基2G
  

• CDMA和WCDMA网络SIM卡有什么区别
  

• 什么是"EV-DO Rev. A"？

Answer 4

使用 iOS 12 或更新版本时，您可以使用NWPathMonitor代替史前Reachability类：

import Network // Put this on top of your class

let monitor = NWPathMonitor()

monitor.pathUpdateHandler = { path in
    if path.status != .satisfied {
        // Not connected
    }
    else if path.usesInterfaceType(.cellular) {
        // Cellular 3/4/5g connection
    }
    else if path.usesInterfaceType(.wifi) {
        // Wi-fi connection
    }
    else if path.usesInterfaceType(.wiredEthernet) {
        // Ethernet connection
    }
}

monitor.start(queue: DispatchQueue.global(qos: .background))

Answer 5

我做了一个非常简单的基于块的Reachability包装器,它剥离了所有过时的C-like Reachability代码,倒入了更多的Cocoa形式.

用法如下:

[EPPZReachability reachHost:hostNameOrIPaddress
               completition:^(EPPZReachability *reachability)
{
    if (reachability.reachableViaCellular) [self doSomeLightweightStuff];
}];

有关日常使用的块的可达性,请访问eppz!blog,或直接从GitHub上的eppz!reachability获取.

它也适用于IP地址,这是一个非常罕见的Reachability包装器功能.

Answer 6

对于swift,我们可以使用:

func getNetworkType()->String {
    do{
        let reachability:Reachability = try Reachability.reachabilityForInternetConnection()
        do{
            try reachability.startNotifier()
            let status = reachability.currentReachabilityStatus
            if(status == .NotReachable){
                return ""
            }else if (status == .ReachableViaWiFi){
                return "Wifi"
            }else if (status == .ReachableViaWWAN){
                let networkInfo = CTTelephonyNetworkInfo()
                let carrierType = networkInfo.currentRadioAccessTechnology
                switch carrierType{
                case CTRadioAccessTechnologyGPRS?,CTRadioAccessTechnologyEdge?,CTRadioAccessTechnologyCDMA1x?: return "2G"
                case CTRadioAccessTechnologyWCDMA?,CTRadioAccessTechnologyHSDPA?,CTRadioAccessTechnologyHSUPA?,CTRadioAccessTechnologyCDMAEVDORev0?,CTRadioAccessTechnologyCDMAEVDORevA?,CTRadioAccessTechnologyCDMAEVDORevB?,CTRadioAccessTechnologyeHRPD?: return "3G"
                case CTRadioAccessTechnologyLTE?: return "4G"
                default: return ""
                }

                // Get carrier name

            }else{
                return ""
            }
        }catch{
            return ""
        }

    }catch{
        return ""
    }


}