iOS 获取设备所连网络的IP地址

(NSString *)deviceIPAdress

{

BOOL success;

struct ifaddrs * addrs;

const struct ifaddrs * cursor;

success = getifaddrs(&addrs) == 0;

if (success) {

cursor = addrs;

while (cursor != NULL) {

// the second test keeps from picking up the loopback address

if (cursor->ifa_addr->sa_family == AF_INET && (cursor->ifa_flags & IFF_LOOPBACK) == 0)

{

NSString *name = [NSString stringWithUTF8String:cursor->ifa_name];

if ([name isEqualToString:@”en0”]) // Wi-Fi adapter

return [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)cursor->ifa_addr)->sin_addr)];

}

cursor = cursor->ifa_next;

}

freeifaddrs(addrs);

}

return nil;

}