如何在iOS编程中检查网络提供商名称？ [英] How to check network provider name in iOS programming?

问题描述

我需要检查设备是否已正确连接到我的Wifi网络。如果它连接，那么我将发送一些数据到服务器，否则不会。

I need to check whether device has been connected properly to "My-Wifi" network or not. If it is connected then I will send some data to server otherwise not.

现在我只是检查与互联网连接，使用Reachability类。

Right now I am just checking with the Internet connection, using Reachability class.

那么如何检查呢？

推荐答案

调用 CNCopySupportedInterfaces（）。

CFArrayRef interfaces = CNCopySupportedInterfaces();
CFIndex count = CFArrayGetCount(interfaces);

for (int i = 0; i < count; i++) {
    CFStringRef interface = CFArrayGetValueAtIndex(interfaces, i);
    CFDictionaryRef netinfo = CNCopyCurrentNetworkInfo(interface);
    if (netinfo && CFDictionaryContainsKey(netinfo, kCNNetworkInfoKeySSID)) {
        NSString *ssid = (__bridge NSString *)CFDictionaryGetValue(netinfo, kCNNetworkInfoKeySSID);
        // Compare with your needed ssid here
    }

    if (netinfo)
        CFRelease(netinfo);
}
CFRelease(interfaces);

在我的经验中，你通常在数组中有一个接口，您已连接或 NULL （如果您不是）。

In my experience, you will usually have one interface in the array which would either be a valid structure if you're connected or NULL if you're not. Still I let the for loop be there just in case.

__ bridge 里面的内容只有在你需要的时候才需要。请使用ARC。

The __bridge cast inside is only needed if you're using ARC.

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