iOS获取本机wifi的IP地址

+(NSString *)getWifiIPAddress{    NSString *ipAddress = nil;    struct ifaddrs *ifa_list = NULL;    struct ifaddrs *tmp = NULL;    int result;    result = getifaddrs(&ifa_list);    if(result == 0)    {        tmp = ifa_list;        ipAddress = @"";        while(tmp){            if(tmp->ifa_addr->sa_family == AF_INET){                if([[NSString stringWithUTF8String:tmp->ifa_name] isEqualToString:@"en0"])                {                    ipAddress = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)tmp->ifa_addr)->sin_addr)];                    break;                }            }            tmp = tmp->ifa_next;        }    }    freeifaddrs(ifa_list);    return ipAddress;}