求助： iOS8 如何扫描 WiFi 列表

想这iPhone上扫描附近WiFi的SSID和MAC地址
软件不需要上架(App Stroe)

网上找了好多，都是利用私有框架 MobileApple80211 来实现的
但是这个私有方法好像中iOS8里被移除了

代码执行到这一句的时候
apple80211Open(&airportHandle);
就会抛出异常
EXC_BAD_ACCESS (code=1, address= 0)

stackoverflow里找到相关的提问，但是都没有很好的解答
http://stackoverflow.com/questions/29044036/ipconfiguration-apple80211open-crashes-on-ios8

关键几行代码如下
libHandle = dlopen("/System/Library/SystemConfiguration/IPConfiguration.bundle/IPConfiguration", RTLD_LAZY);
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apple80211Open = dlsym(libHandle, "Apple80211Open");
apple80211Bind = dlsym(libHandle, "Apple80211BindToInterface");
apple80211Close = dlsym(libHandle, "Apple80211Close");
apple80211GetInfoCopy = dlsym(libHandle, "Apple80211GetInfoCopy");
apple80211Open(&airportHandle);
apple80211Bind(airportHandle, @"en0");