第一步 建立一個NSObject 檔案

.h 檔案 寫

#import <Foundation/Foundation.h>

@interface NSObject (GetIP)

+ (NSString *)deviceIPAdress;

@end

.m檔案 寫

#import "NSObject+GetIP.h"

#include <ifaddrs.h>

#include <arpa/inet.h>

@implementation NSObject (GetIP)

//必須在有網的情況下才能獲取手機的IP地址

+ (NSString

NSString *address = @"an error occurred when obtaining ip address";

structifaddrs *interfaces = NULL;

structifaddrs *temp_addr = NULL;

int success = 0;

    success = getifaddrs(&interfaces);

if (success == 0) { // 0 表示獲取成功

        temp_addr = interfaces;

while (temp_addr !=

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

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

if ([[NSStringstringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"]) {

// Get NSString from C String

                    address = [NSStringstringWithUTF8String

                }

            }

            temp_addr = temp_addr->ifa_next;

        }

    }

freeifaddrs(interfaces);

NSLog(@"%@", address);

return address;

}

@end

#import "NSObject+GetIP.h"

#include <ifaddrs.h>

#include <arpa/inet.h>

#include <net/if.h>

#define IOS_CELLULAR    @"pdp_ip0"

#define IOS_WIFI        @"en0"

#define IOS_VPN         @"utun0"

#define IP_ADDR_IPv4    @"ipv4"

#define IP_ADDR_IPv6    @"ipv6"

第三步 在你寫給後臺的網路請求裡寫入

NSString *StringIP = [NSStringdeviceIPAdress]; //呼叫方法 獲取ip地址 賦值給字串 stringIP

[params setObject:StringIP forKey:@"ipNum"];  //把ip 地址對應後臺提供的引數 傳給後臺