获取内网IP地址

//获取ip地址+(NSString *)getIPaddress{   //获取内网IP   NSString *address = @"error";   struct ifaddrs * ifaddress = NULL;   struct ifaddrs * temp_address = NULL;   int success = 0;   success = getifaddrs(&ifaddress);   if(success == 0) {       temp_address = ifaddress;       while(temp_address != NULL) {           if(temp_address->ifa_addr->sa_family == AF_INET) {             if([[NSString stringWithUTF8String:temp_address->ifa_name] isEqualToString:@"en0"]) {        address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_address->ifa_addr)->sin_addr)];               }           }           temp_address = temp_address->ifa_next;       }   }    NSLog(@"获取到的IP地址为：%@",ip);    return ip;}

获取外网IP地址

//获取外网 ip地址+(NSString *)getIPaddress{    NSError *error;    NSURL *ipURL = [NSURL URLWithString:@"http://pv.sohu.com/cityjson?ie=utf-8"];    NSMutableString *ip = [NSMutableString stringWithContentsOfURL:ipURL encoding:NSUTF8StringEncoding error:&error];    //判断返回字符串是否为所需数据    if ([ip hasPrefix:@"var returnCitySN = "]) {        //对字符串进行解决，而后进行json解析        //删除字符串多余字符串        NSRange range = NSMakeRange(0, 19);        [ip deleteCharactersInRange:range];        NSString * nowIp =[ip substringToIndex:ip.length-1];        //将字符串转换成二进制进行Json解析        NSData * data = [nowIp dataUsingEncoding:NSUTF8StringEncoding];        NSDictionary * dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];        DLog(@"%@",dict);        return dict[@"cip"] ? dict[@"cip"] : @"";    }    return @"";}

备注：
也有网友举荐这两种，亲测不靠谱，有时会特地慢或获取不到IP

//获取外网 ip地址+(NSString *)getIPaddress{    //办法一：【不靠谱】    NSError *error;    NSURL *ipURL = [NSURL URLWithString:@"http://ifconfig.me/ip"];    NSString *ip = [NSString stringWithContentsOfURL:ipURL encoding:NSUTF8StringEncoding error:&error];    //办法二：【不靠谱办法二】    /*    http://ipof.in/json    http://ipof.in/xml    http://ipof.in/txt    If you want HTTPS you can use the same URLs with https prefix. The advantage being that even if you are on a Wifi you will get the public address.     */   NSError *error;   NSURL *ipURL = [NSURL URLWithString:@"http://ipof.in/txt"];   NSString *ip = [NSString stringWithContentsOfURL:ipURL encoding:NSUTF8StringEncoding error:&error];    NSLog(@"获取到的IP地址为：%@",ip);        return ip;}