iOS 获取ssid

- (NSString *)fetchSSIDInfo

{

   NSString *ssid = nil;

    NSArray *ifs = (__bridge_transfer id)CNCopySupportedInterfaces();

    for (NSString *ifnam in ifs) {

        NSDictionary *info = (__bridge_transfer id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifnam);

        if (info[@"SSID"]) {

            ssid = info[@"SSID"];

        }

    }

        return ssid;

}

 注意：真机才好使， 模拟器 获取到的 是空的。