如何获取手机的ip地址

废话不多说，直接上代码。

#import <Foundation/Foundation.h>  

@interface GetIPAddress : NSObject  

+ (NSString *)deviceIPAdress;  

@end  

#import "GetIPAddress.h"  


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

@implementation GetIPAddress  

+ (NSString *)deviceIPAdress {  
  NSString *address = @"an error occurred when obtaining ip address";  
  struct ifaddrs *interfaces = NULL;  
  struct ifaddrs *temp_addr = NULL;  
  int success = 0;  

  success = getifaddrs(&interfaces);  

  if (success == 0) { // 0 表示获取成功  

    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:@"en0"]) {  
          // 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;  
    }  
  }  

  freeifaddrs(interfaces);  

  NSLog(@"手机的IP是：%@", address);  
  return address;  
}  

@end  

参考链接：http://blog.youkuaiyun.com/chenyufeng1991/article/details/48286323