ios获取ip地址

进来接微信支付,后台要传ip地址,so~

首先要导这些头文件

 1 #include <stdio.h>

 2 #include <stdlib.h>

 3 #include <math.h>

 4 #include <string.h>

 5 #include <unistd.h>

 6 #include <sys/ioctl.h>

 7 #include <sys/types.h>

 8 #include <sys/sysctl.h>

 9 #include <sys/socket.h>

10 #include <netinet/in.h>

11 #include <netdb.h>

12 #include <arpa/inet.h>

13 #include <sys/sockio.h>

14 #include <net/if.h>

15 #include <net/ethernet.h>

16 #include <errno.h>

17 #include <net/if_dl.h>

18 #include <ifaddrs.h>

19 #include <mach/machine.h>

然后就是方法啦:

 1 + (NSString *)getIPAddress

 2 {

 3     NSString *address = @"error";

 4     struct ifaddrs *interfaces = NULL;

 5     struct ifaddrs *temp_addr = NULL;

 6     int success = 0;

 7     // retrieve the current interfaces - returns 0 on success

 8     success = getifaddrs(&interfaces);

 9     if (success == 0)

10     {

11         // Loop through linked list of interfaces

12         temp_addr = interfaces;

13         while(temp_addr != NULL)

14         {

15             if(temp_addr->ifa_addr->sa_family == AF_INET)

16             {

17                 // Check if interface is en0 which is the wifi connection on the iPhone

18                 if([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"])

19                 {

20                     // Get NSString from C String

21                     address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];

22                 }

23             }

24             temp_addr = temp_addr->ifa_next;

25         }

26     }

27     // Free memory

28     freeifaddrs(interfaces);

29     return address;

30 }

我是给放在工具类里面了,哪里要用调哪里~so easy~