首先說明下，下面兩種方法均可以獲得手機的mac地址，但是有個限制，是在iOS一下才可以獲得。iOS7以後蘋果對於sysctl和ioctl進行了技術處理，MAC地址返回的都是02:00:00:00:00:00。官方文檔上這樣寫的“Twolow-level networking APIs that used to return a MAC address now return thefixed value 02:00:00:00:00:00. The APIs in question are sysctl(NET_RT_IFLIST) and ioctl(SIOCGIFCONF). Developers using the value of the MAC address should migrate toidentifiers such as -[UIDevice identifierForVendor].This change affects all apps running on iOS 7”。

所以在iOS7以後想要獲取設備的唯一標示Mac地址已經不行了，只能用其他的代替。

下面說下兩種方式：

都需要導入幾個頭文件

 

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1. #include
2. #include
3. #include
   方法1：

    

    

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   1. // Return the local MAC addy
   2. // Courtesy of FreeBSD hackers email list
   3. // Accidentally munged during previous update. Fixed thanks to mlamb.
   4. - (NSString *) macaddress
   5. {
   6.  
   7. int mib[6];
   8. size_t len;
   9. char *buf;
   10. unsigned char *ptr;
   11. struct if_msghdr *ifm;
   12. struct sockaddr_dl *sdl;
   13.  
   14. mib[0] = CTL_NET;
   15. mib[1] = AF_ROUTE;
   16. mib[2] = 0;
   17. mib[3] = AF_LINK;
   18. mib[4] = NET_RT_IFLIST;
   19.  
   20. if ((mib[5] = if_nametoindex(en0)) == 0) {
   21. printf(Error: if_nametoindex error/n);
   22. return NULL;
   23. }
   24.  
   25. if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
   26. printf(Error: sysctl, take 1/n);
   27. return NULL;
   28. }
   29.  
   30. if ((buf = malloc(len)) == NULL) {
   31. printf(Could not allocate memory. error!/n);
   32. return NULL;
   33. }
   34.  
   35. if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
   36. printf(Error: sysctl, take 2);
   37. return NULL;
   38. }
   39.  
   40. ifm = (struct if_msghdr *)buf;
   41. sdl = (struct sockaddr_dl *)(ifm + 1);
   42. ptr = (unsigned char *)LLADDR(sdl);
   43. NSString *outstring = [NSString stringWithFormat:@%02x:%02x:%02x:%02x:%02x:%02x, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
   44.  
   45. // NSString *outstring = [NSString stringWithFormat:@%02x%02x%02x%02x%02x%02x, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
   46.  
   47. NSLog(@outString:%@, outstring);
   48.  
   49. free(buf);
   50.  
   51. return [outstring uppercaseString];
   52. }
       源自http://blog.csdn.net/showhilllee

        

       方法2：

        

        

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       1. - (NSString *)getMacAddress
       2. {
       3. int mgmtInfoBase[6];
       4. char *msgBuffer = NULL;
       5. size_t length;
       6. unsigned char macAddress[6];
       7. struct if_msghdr *interfaceMsgStruct;
       8. struct sockaddr_dl *socketStruct;
       9. NSString *errorFlag = NULL;
       10.  
       11. // Setup the management Information Base (mib)
       12. mgmtInfoBase[0] = CTL_NET; // Request network subsystem
       13. mgmtInfoBase[1] = AF_ROUTE; // Routing table info
       14. mgmtInfoBase[2] = 0;
       15. mgmtInfoBase[3] = AF_LINK; // Request link layer information
       16. mgmtInfoBase[4] = NET_RT_IFLIST; // Request all configured interfaces
       17.  
       18. // With all configured interfaces requested, get handle index
       19. if ((mgmtInfoBase[5] = if_nametoindex(en0)) == 0)
       20. errorFlag = @if_nametoindex failure;
       21. else
       22. {
       23. // Get the size of the data available (store in len)
       24. if (sysctl(mgmtInfoBase, 6, NULL, &length, NULL, 0) < 0)
       25. errorFlag = @sysctl mgmtInfoBase failure;
       26. else
       27. {
       28. // Alloc memory based on above call
       29. if ((msgBuffer = malloc(length)) == NULL)
       30. errorFlag = @buffer allocation failure;
       31. else
       32. {
       33. // Get system information, store in buffer
       34. if (sysctl(mgmtInfoBase, 6, msgBuffer, &length, NULL, 0) < 0)
       35. errorFlag = @sysctl msgBuffer failure;
       36. }
       37. }
       38. }
       39.  
       40. // Befor going any further...
       41. if (errorFlag != NULL)
       42. {
       43. NSLog(@Error: %@, errorFlag);
       44. return errorFlag;
       45. }
       46.  
       47. // Map msgbuffer to interface message structure
       48. interfaceMsgStruct = (struct if_msghdr *) msgBuffer;
       49.  
       50. // Map to link-level socket structure
       51. socketStruct = (struct sockaddr_dl *) (interfaceMsgStruct + 1);
       52.  
       53. // Copy link layer address data in socket structure to an array
       54. memcpy(&macAddress, socketStruct->sdl_data + socketStruct->sdl_nlen, 6);
       55.  
       56. // Read from char array into a string object, into traditional Mac address format
       57. NSString *macAddressString = [NSString stringWithFormat:@%02x:%02x:%02x:%02x:%02x:%02x,
       58. macAddress[0], macAddress[1], macAddress[2],
       59. macAddress[3], macAddress[4], macAddress[5]];
       60. NSLog(@Mac Address: %@, macAddressString);
       61.  
       62. // Release the buffer memory
       63. free(msgBuffer);
       64.  
       65. return macAddressString;
       66. }