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 adapter13                 {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 }