如何在iOS中检查Internet是否正常工作 [英] How to check Internet is working or not in ios

问题描述

我正在尝试使用 AFNetworking 来检测设备上的互联网是否正常工作；请参阅SO
AFNetworking 2.0可达性上的答案。我能够检测到设备已连接WiFi或3G。

I am trying to detect the internet is working or not on the device using AFNetworking ; referred to the answer here on the SO AFNetworking 2.0 Reachability . I am able to detect device is connected with WiFi or 3G..

问题是实际上互联网无法正常工作，就像WIFI一样，但互联网却无法正常工作。

The problem is Actually internet is not working like the WIFI is on but internet is not working.

我如何检测互联网是否正常。就像我们使用ping ...进行检查。

How Can i detect internet is working .Like we check using ping....

我正在使用

-(BOOL)connected {

  __block BOOL reachable;

// Setting block doesn't means you area running it right now
[[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {

    switch (status) {
        case AFNetworkReachabilityStatusNotReachable:
            NSLog(@"No Internet Connection");
            reachable = NO;
            break;
        case AFNetworkReachabilityStatusReachableViaWiFi:
            NSLog(@"WIFI");

            reachable = YES;
            break;
        case AFNetworkReachabilityStatusReachableViaWWAN:
            NSLog(@"3G");
            reachable = YES;
            break;
        default:
            NSLog(@"Unkown network status");
            reachable = NO;
            break;

    }
}];
// and now activate monitoring
[[AFNetworkReachabilityManager sharedManager] startMonitoring];

return reachable;

}

推荐答案

添加用于更改网络状态的通知观察器。
就像在完成启动类下的应用程序委托类中添加以下代码

Add notification observer for change in network status. Like add following code in app delegate class under finish launching class

 [[AFNetworkReachabilityManager sharedManager] startMonitoring];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(receiveNetworkChnageNotification:) name:AFNetworkingReachabilityDidChangeNotification object:nil];

在.h文件中添加全局Alertview。

Add global alertview in .h file. as it will appear and disappear on network status change.

这是在以下位置调用的通知功能：

here is notification function called on :

- (void)receiveNetworkChnageNotification:(NSNotification *)notification
{
    if (![self isReachable])
    {
        self.alertView = [[UIAlertView alloc] initWithTitle:@"No Internet Connection" message:@"You have no internet connection on your device, please check and try again later." delegate:nil cancelButtonTitle:@"Cancel" otherButtonTitles:nil];
        [self.alertView show];
    }
    else
    {
        [self.alertView dismissWithClickedButtonIndex:0 animated:YES];
    }
}

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