Question

在iPhone 5S WiFi中检测到3G和我的iPhone 4是正常的。两者都在iOS 7.1中。

在某些设备中它也会发生。

WiFi禁用且已连接3G，我仔细检查以确定互联网连接是否正常，确实设备本身没问题。

知道为什么吗？

修改1：

以下代码：

- (void)registerReachabilityNotification
{
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(checkNetworkStatus:)
                                                 name:kReachabilityChangedNotification object:nil];

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

    NSNotification *note = [[NSNotification alloc] initWithName:kReachabilityChangedNotification object:reach userInfo:nil];
    [self checkNetworkStatus:note];
}

- (void)checkNetworkStatus:(NSNotification*)notification
{
    Reachability *reach = notification.object;
    NSParameterAssert([reach isKindOfClass: [Reachability class]]);

    NetworkStatus internetStatus = [reach currentReachabilityStatus];
    switch (internetStatus)
    {
        case NotReachable:
        {
            NSLog(@"No internet connection.");
            break;
        }
        case ReachableViaWiFi:
        {
            NSLog(@"The internet is working via WIFI.");
            break;
        }
        case ReachableViaWWAN:
        {
            NSLog(@"The internet is working via WWAN.");
            break;
        }
    }
}

修改1：

此代码：

NetworkStatus nStats = [[Reachability reachabilityForLocalWiFi] currentReachabilityStatus];

    if (nStats != ReachableViaWiFi) {
        NSLog(@"nStats != ReachableViaWiFi");
    }

    if (nStats == ReachableViaWiFi) {
        NSLog(@"WIFI");
    }
    else if (nStats == ReachableViaWWAN) {
        NSLog(@"WWAN");
    }
    else if (nStats == NotReachable) {
        NSLog(@"not reachable");
    }
    else {
        NSLog(@"undetermined reachability.");
    }

给我这个：

Reachability Flag Status: WR t------ localWiFiStatusForFlags
nStats != ReachableViaWiFi
not reachable

Answer 1

我的方法完全错误，正确的方法代码如下：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    NSLog(@"CONNECTION: %@", NSStringFromNetworkStatus([MobileControlHandler checkConnection]));
    return YES;
}

+ (NetworkStatus)checkConnection
{
    NetworkStatus wifiStatus = [[Reachability reachabilityForLocalWiFi] currentReachabilityStatus];
    NetworkStatus internetStatus = [[Reachability reachabilityForInternetConnection] currentReachabilityStatus];

    if (wifiStatus == ReachableViaWiFi) {
        return ReachableViaWiFi;
    }
    else if (wifiStatus != ReachableViaWiFi && internetStatus == ReachableViaWWAN) {
        return ReachableViaWWAN;
    }
    else {
        return NotReachable;
    }
}

FOUNDATION_EXPORT NSString *NSStringFromNetworkStatus(NetworkStatus netStatus)
{
    if (netStatus == ReachableViaWiFi) {
        return @"ReachableViaWiFi";
    } else if (netStatus == ReachableViaWWAN) {
        return @"ReachableViaWWAN";
    } else if (netStatus == NotReachable) {
        return @"NotReachable";
    } else {
        return @"Undetermined reachbility flag";
    }
}

简介：

Reachability Flag Status: WR t------ localWiFiStatusForFlags
Reachability Flag Status: WR t----l- networkStatusForFlags
CONNECTION: ReachableViaWWAN

Answer 2

只需从Apple下载新的Reachability类 https://developer.apple.com/library/ios/samplecode/Reachability/Introduction/Intro.html

它也适用于ios 8。

有关iOS应用开发的更多互动内容，Checkout https://appengineer.in/

Answer 3

ServicePointManager.SecurityProtocol |= SecurityProtocolType.Tls;
ServicePointManager.SecurityProtocol |= SecurityProtocolType.Tls11;
ServicePointManager.SecurityProtocol |= SecurityProtocolType.Tls12;
ServicePointManager.SecurityProtocol |= SecurityProtocolType.Ssl3;
ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, errors) => true;

它是一个单身人士，所以你可以马上开始使用它。

例如：

{{1}}

连接到3G时，可达性返回ReachableViaWiFi

3 个答案: