得到iPhone的IP地址函数

最新推荐文章于 2021-09-19 00:07:32 发布

转载最新推荐文章于 2021-09-19 00:07:32 发布 · 1.1k 阅读

OBject-C 专栏收录该内容

39 篇文章

订阅专栏

本文提供了一段Objective-C代码，用于获取iOS设备上的WiFi连接IP地址。通过遍历网络接口并筛选出符合要求的接口，最终返回IP地址。

 
  #include <ifaddrs.h>
 
  #include <arpa/inet.h>
 
  - (NSString *)getIPAddress
 
  {
 
      NSString *address = @"error";
 
      struct ifaddrs *interfaces = NULL;
 
      struct ifaddrs *temp_addr = NULL;
 
      int success = 0;
 
      // retrieve the current interfaces - returns 0 on success
 
      success = getifaddrs(&interfaces);
 
      if (success == 0)
 
      {
 
          // Loop through linked list of interfaces
 
          temp_addr = interfaces;
 
          while(temp_addr != NULL)
 
          {
 
              if(temp_addr->ifa_addr->sa_family == AF_INET)
 
              {
 
                  // Check if interface is en0 which is the wifi connection on the iPhone
 
                  if([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en1"])
 
                  {
 
                      // Get NSString from C String
 
                      address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];
 
                  }
 
              }
 
              temp_addr = temp_addr->ifa_next;
 
          }
 
      }
 
      // Free memory
 
      freeifaddrs(interfaces);
 
      return address;
 
  }
 
  //该代码片段来自于: http://www.sharejs.com/codes/objectc/3902