获取本机ip地址

导入头文件

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

 1 #pragma mark - 获取本机地址
 2 - (NSString *)localIPAddress
 3 {
 4     NSString *localIP = nil;
 5     struct ifaddrs *addrs;
 6     if (getifaddrs(&addrs)==0) {
 7         const struct ifaddrs *cursor = addrs;
 8         while (cursor != NULL) {
 9             if (cursor->ifa_addr->sa_family == AF_INET && (cursor->ifa_flags & IFF_LOOPBACK) == 0)
10             {
11                 //NSString *name = [NSString stringWithUTF8String:cursor->ifa_name];
12                 //if ([name isEqualToString:@"en0"]) // Wi-Fi adapter
13                 {
14                     localIP = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)cursor->ifa_addr)->sin_addr)];
15                     break;
16                 }
17             }
18             cursor = cursor->ifa_next;
19         }
20         freeifaddrs(addrs);
21     }
22     return localIP;
23 }