哪一种最简单的方法来检查iOS中的Internet连接？

Question

可能重复：
Check for internet connection - iOS SDK

我在寻找支票最快和最简单的方式在iOS上的连接。

我发现这一点：

-(BOOL)connectedToNetwork { 
    NSURL* url = [[NSURL alloc] initWithString:@"http://google.com/"]; 
    NSData* data = [NSData dataWithContentsOfURL:url]; 
    if (data != nil) 
     return YES; 
    return NO; 
} 

你知道，如果是有什么更简单???

伙计们，感谢所有的答案，但我正在寻找最简单，最轻的解决方案，而不是最好的解决方案（即不需要区分3G/Wi-Fi，我只搜索是/否达到一个网站）

Answer 1

看看苹果提供的Reachability Example。

您的方法可能存在的问题是，您可能有超时，因此同步下载某些数据可能会阻止您的应用程序。因此，苹果可能会拒绝你的应用程序。

Reachability *_reachability = [Reachability reachabilityForInternetConnection]; 
NetworkStatus remoteHostStatus = [_reachability currentReachabilityStatus]; 
if (remoteHostStatus == NotReachable) { 
    // not reachable 
} else if (remoteHostStatus == ReachableViaWiFi) { 
    // reachable via Wifi 
} else if (remoteHostStatus == ReachableViaWWAN) { 
    // reachable via WWAN 
} 

Answer 2

我建议不要用这种方法去：

的Reachability Example可以如下使用。由于此代码，我面临拒绝我的应用程序之一。相反，与Apple's Reachability Classes.

Answer 3

Reachability* reachability = [Reachability sharedReachability]; 
[reachability setHostName:@"www.example.com"]; // set your host name here 
NetworkStatus remoteHostStatus = [reachability remoteHostStatus]; 

How to check for an active Internet connection on iOS or OSX?

Answer 4

正如@ who9vy所述使用Reachability Example

导入这两个类Reachability.h和Reachability.m到您的项目

使用方法来检查去上网连接

- (BOOL)isConnectedToInternet 
{ 
    Reachability *reachability = [Reachability reachabilityForInternetConnection]; 
    NetworkStatus networkStatus = [reachability currentReachabilityStatus]; 
    return !(networkStatus == NotReachable); 
} 

Answer 5

是否可达。最好的办法是苹果Rechability类

入住这link

希望它可以帮助你..

Answer 6

使用此代码来检查设备是否连接到互联网或不

请使用viewDidLoad中的该代码：

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

    hostReachable = [Reachability reachabilityWithHostName: @"www.apple.com"] ; 
    [hostReachable startNotifier]; 

并将此函数添加到您的代码中：

-(void) checkNetworkStatus:(NSNotification *)notice 
{ 
    recheabilityBool=FALSE; 
    nonrecheabilityBool=FALSE; 
    // called after network status changes 
    NetworkStatus internetStatus = [internetReachable currentReachabilityStatus]; 
    switch (internetStatus) 
    { 
     case NotReachable: 
     { 
      nonrecheabilityBool=TRUE; 
      internetCon=0; 
      //NSLog(@"The internet is down."); 


      break; 
     } 
     case ReachableViaWiFi: 
     { 
      NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults]; 
      internetCon=404; 
      [prefs setInteger:internetCon forKey:@"conKey"]; 

      //NSLog(@"The internet is working via WIFI."); 
      break; 

     } 
     case ReachableViaWWAN: 
     { 
      //NSLog(@"The internet is working via WWAN."); 

      break; 
     } 
    } 

    NetworkStatus hostStatus = [hostReachable currentReachabilityStatus]; 
    switch (hostStatus) 
    { 
     case NotReachable: 
     { 
      internetCon=0; 
      if(nonrecheabilityBool==FALSE) 
      { 
       //NSLog(@"A gateway to the host server is down."); 
      } 
      break; 

     } 
     case ReachableViaWiFi: 
     { 
      if(recheabilityBool==FALSE) 
      { 

       recheabilityBool=TRUE; 

       NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults]; 
       internetCon=404; 
       [prefs setInteger:internetCon forKey:@"conKey"]; 


       //NSLog(@"The internet is working via WIFI."); 
       break; 
      } 


      //NSLog(@"A gateway to the host server is working via WIFI."); 

      break; 
     } 
     case ReachableViaWWAN: 
     { 
      //NSLog(@"A gateway to the host server is working via WWAN."); 
      break; 
     } 
    } 
} 


- (BOOL)connected 
{ 
    Reachability *reachability = [Reachability reachabilityForInternetConnection]; 
    NetworkStatus networkStatus = [reachability currentReachabilityStatus]; 
    return !(networkStatus == NotReachable); 
}