IOS開發——擷取區域網路IP

標頭檔

#include <arpa/inet.h>#include <net/if.h>#include <ifaddrs.h>

源碼

- (NSString *)localIPAddress{    NSString *localIP = nil;    struct ifaddrs *addrs;    if (getifaddrs(&addrs)==0) {        const struct ifaddrs *cursor = addrs;        while (cursor != NULL) {            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                {                    localIP = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)cursor->ifa_addr)->sin_addr)];                    break;                }            }            cursor = cursor->ifa_next;        }        freeifaddrs(addrs);    }    return localIP;}

之前用過IPAddress.h及.c的，但pch中不得包含標頭檔；找了好久，終於找到這段代碼，分享一下