iOS开发之获取Iphone的IP地址和子网掩码

在实际开发中有时需要拿到手机的IP地址和子网掩码，话不多说上代码

1、导入头文件

#import 
#import 
#include 
#include 
#import 
#include 
#include 
#import 

2、获取用户当前的IP地址

+ (nullable NSString*)getCurrentLocalIP

{

    NSString *address = nil;

    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:@"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;

        }

    }

    // Free memory

    freeifaddrs(interfaces);

    return address;

    }

3、 获取所连WIFI的子网掩码

 + (nullable NSString*)getCurrentWifiMessage {

        NSString *address = nil;

        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:@"en0"])

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

                    //                    NSLog(@"子网掩码:%@",[NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_netmask)->sin_addr)]);

                    //                NSLog(@"本地IP:%@",[NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)]);

                    //                NSLog(@"广播地址:%@",[NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_dstaddr)->sin_addr)]);

                }

                

                temp_addr = temp_addr->ifa_next;

            }

        }

        // Free memory

        freeifaddrs(interfaces);

        return address;

}

直接见成效。