iOS连接公共WiFi时不弹出portal页面

#import <SystemConfiguration/CaptiveNetwork.h>

NSString *values[] = {@"ChinaNet"};
    CFArrayRef arrayRef = CFArrayCreate(kCFAllocatorDefault,(void *)values,
                                        (CFIndex)1, &kCFTypeArrayCallBacks);
    if( CNSetSupportedSSIDs(arrayRef))
    {
        DDLogInfo(@"Successfully registered supported network SSIDs");
    }
    else
    {
        DDLogError(@"Fail to register supported network SSIDs");

}