Iphone互联网连接（可达性）

本文介绍了Iphone互联网连接（可达性）的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我看到任何有关可达性的帖子，但人们并没有真正给出问题的确切答案。 在我的应用程序中，我使用来自apple的可达性代码，在我的appDelegate中，我使用：

I saw any post about Reachability but people doesn't really give the exact answer to the problem. In my application I use the Reachability code from apple and in my appDelegate I use this:

-(BOOL)checkInternet { Reachability *reachability = [Reachability reachabilityWithHostName:@"www.google"]; NetworkStatus internetStatus = [reachability currentReachabilityStatus]; BOOL internet; if ((internetStatus != ReachableViaWiFi) && (internetStatus != ReachableViaWWAN)) { internet = NO; }else { internet = YES; } return internet; }

所以问题是即使我有互联网连接，这段代码告诉我我没有。 有谁知道该怎么做才能使这个工作？

So the problem is even if I have an internet connection, this code telling me that I don't have one. Does anyone know what to do to make this working?

谢谢，

推荐答案

您可能应该使用 + [Reachability reachabilityForInternetConnection] 而不是特定名称的可达性（当然除非您实际需要）。

You should probably be using +[Reachability reachabilityForInternetConnection] rather than reachability for a particular name (unless of course that's what you actually need).

毕竟，当你仍然有可用的互联网连接时，可能会出现各种原因导致特定服务器无法访问。

There could be all manner of reasons that a particular server might not be reachable while you still have a working internet connection, after all.

这就是我的工作：

BOOL hasInet; Reachability *connectionMonitor = [Reachability reachabilityForInternetConnection]; [[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(inetAvailabilityChanged:) name: kReachabilityChangedNotification object: connectionMonitor]; hasInet = [connectionMonitor currentReachabilityStatus] != NotReachable;

然后

-(void)inetAvailabilityChanged:(NSNotification *)notice { Reachability *r = (Reachability *)[notice object]; hasInet = [r currentReachabilityStatus] != NotReachable; }

对我来说效果很好。