项目需要采集设备信息,从 stackOverFlow 上找到的方法是
+ (NSString *)getIPAddress:(BOOL)preferIPv4 { NSArray *searchArray = preferIPv4 ? @[ /*IOS_VPN @"/" IP_ADDR_IPv4, IOS_VPN @"/" IP_ADDR_IPv6,*/ IOS_WIFI @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6 ] : @[ /*IOS_VPN @"/" IP_ADDR_IPv6, IOS_VPN @"/" IP_ADDR_IPv4,*/ IOS_WIFI @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4 ] ; NSDictionary *addresses = [self getIPAddresses]; NSLog(@"addresses: %@", addresses); __block NSString *address; [searchArray enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop) { address = addresses[key]; if(address) *stop = YES; } ]; return address ? address : @"0.0.0.0"; } + (NSDictionary *)getIPAddresses { NSMutableDictionary *addresses = [NSMutableDictionary dictionaryWithCapacity:8]; // retrieve the current interfaces - returns 0 on success struct ifaddrs *interfaces; if(!getifaddrs(&interfaces)) { // Loop through linked list of interfaces struct ifaddrs *interface; for(interface=interfaces; interface; interface=interface->ifa_next) { if(!(interface->ifa_flags & IFF_UP) /* || (interface->ifa_flags & IFF_LOOPBACK) */ ) { continue; // deeply nested code harder to read } const struct sockaddr_in *addr = (const struct sockaddr_in*)interface->ifa_addr; char addrBuf[ MAX(INET_ADDRSTRLEN, INET6_ADDRSTRLEN) ]; if(addr && (addr->sin_family==AF_INET || addr->sin_family==AF_INET6)) { NSString *name = [NSString stringWithUTF8String:interface->ifa_name]; NSString *type; if(addr->sin_family == AF_INET) { if(inet_ntop(AF_INET, &addr->sin_addr, addrBuf, INET_ADDRSTRLEN)) { type = IP_ADDR_IPv4; } } else { const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6*)interface->ifa_addr; if(inet_ntop(AF_INET6, &addr6->sin6_addr, addrBuf, INET6_ADDRSTRLEN)) { type = IP_ADDR_IPv6; } } if(type) { NSString *key = [NSString stringWithFormat:@"%@/%@", name, type]; addresses[key] = [NSString stringWithUTF8String:addrBuf]; } } } // Free memory freeifaddrs(interfaces); } return [addresses count] ? addresses : nil; }
获得到的ip地址是192.168.1.100,但是手机直接在百度上得到的IP地址是218.65.52.142(这个是对的),前面是local address?
stackOverFlow地址:链接描述
wifi 和4g的情况是一样的,有能获取后面地址的方法吗?
引用ALNetwork
然后 NSString *IPAddress = [ALNetwork externalIPAddress];
就可以获取到了。
这个类用的方法其实是通过请求别人的服务器获取IP的。(http://www.dyndns.org/cgi-bin...
// Credits to Shmoopi LLC, SystemServiceDemo // Get the External IP Address + (NSString *)externalIPAddress { // Check if we have an internet connection then try to get the External IP Address if (![self connectedViaWiFi] && ![self connectedVia3G]) { // Not connected to anything, return nil return nil; } // Get the external IP Address based on dynsns.org NSError *error = nil; NSString *theIpHtml = [NSString stringWithContentsOfURL:[NSURL URLWithString:@"http://www.dyndns.org/cgi-bin/check_ip.cgi"] encoding:NSUTF8StringEncoding error:&error]; if (!error) { NSUInteger an_Integer; NSArray *ipItemsArray; NSString *externalIP; NSScanner *theScanner; NSString *text = nil; theScanner = [NSScanner scannerWithString:theIpHtml]; while ([theScanner isAtEnd] == NO) { // find start of tag [theScanner scanUpToString:@"<" intoString:NULL] ; // find end of tag [theScanner scanUpToString:@">" intoString:&text] ; // replace the found tag with a space //(you can filter multi-spaces out later if you wish) theIpHtml = [theIpHtml stringByReplacingOccurrencesOfString: [ NSString stringWithFormat:@"%@>", text] withString:@" "] ; ipItemsArray = [theIpHtml componentsSeparatedByString:@" "]; an_Integer = [ipItemsArray indexOfObject:@"Address:"]; externalIP =[ipItemsArray objectAtIndex:++an_Integer]; } // Check that you get something back if (externalIP == nil || externalIP.length <= 0) { // Error, no address found return nil; } // Return External IP return externalIP; } else { // Error, no address found return nil; } }
我根据 Stack Overflow 的这个回答建了一个测试工程 Objective C - How to get the public IP address of the device
Github: Github iOS-GetIP
你可以下载下来试一下。
那个ALNetwork引用了一个检查网络连接状态的类,我将它注释掉了,你如果需要可以加进去。
如果只是收集IP信息的话,直接在服务端提供一个接口,客户端请求时,服务端记录客户端的真实IP即可