AFNetworking和无Internet连接方案 [英] AFNetworking and No Internet Connection scenario

问题描述

我在我的应用程式中为每个要求使用 AFNetworking （例如登入，从网址取得资料等）。

I use AFNetworking in my app for every request (like login, get data from url, etc).

以这个为例：用户点击登录按钮，没有连接，如何立即显示 UIAlertView ，说错误？ only 方法是等待请求超时并执行失败块？是否有立即检查是否有连接的方法？

Take this for example: an user click on the login button and there's no connection, how to instantly display a UIAlertView that says the error? The only way is to wait the request timeout and execute the failure block? Isn't there a way that instantly check if there's connection or not?

谢谢！

推荐答案

从0.9开始， AFHTTPClient 实际上具有内置的网络可达性（对苹果的前述可达性代码更简单的接口）。只要包括 SystemConfiguration 框架并使用 -setReachabilityStatusChangeBlock：指定可达性状态变化时的响应。

As of 0.9, AFHTTPClient actually has network reachability built-in (a simpler interface to Apple's aforementioned Reachability code). Just include the SystemConfiguration framework and use -setReachabilityStatusChangeBlock: to specify a response when the reachability state changes.

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