iOS 下获取设备的网络IP

 iOS下创建一个类 调用类(IPHelper)方法得到当前IP

#import <Foundation/Foundation.h>

@interface IPHelper :NSObject

+ (NSString *)getIPAddress:(BOOL)isIPv4;

@end

#import "IPHelper.h"

#include <ifaddrs.h>

#include <arpa/inet.h>

#include <net/if.h>

#define IOS_CELLULAR    @"pdp_ip0"

#define IOS_WIFI        @"en0"

#define IP_ADDR_IPv4    @"ipv4"

#define IP_ADDR_IPv6    @"ipv6"

@interface IPHelper ()

@property (nonatomic,strong)NSString *IpStr;

@end

@implementation IPHelper

+ (NSString *)getIPAddress:(BOOL)isIPv4

{

   NSArray *searchArray = isIPv4 ?

    @[IOS_WIFI @"/"IP_ADDR_IPv4, IOS_WIFI@"/" IP_ADDR_IPv6, IOS_CELLULAR@"/" IP_ADDR_IPv4, IOS_CELLULAR@"/" IP_ADDR_IPv6 ] :

    @[IOS_WIFI @"/"IP_ADDR_IPv6, IOS_WIFI@"/" IP_ADDR_IPv4, IOS_CELLULAR@"/" IP_ADDR_IPv6, IOS_CELLULAR@"/" IP_ADDR_IPv4 ] ;

    

   NSDictionary *addresses = [selfgetIPAddresses];

    

    

   __block NSString *address;

    [searchArrayenumerateObjectsUsingBlock:^(NSString *key,NSUInteger idx, BOOL *stop)

     {

         address = addresses[key];

        if(address) *stop = YES;

     } ];

   return address ? address : @"0.0.0.0";

}

+ (NSDictionary *)getIPAddresses

{

    NSMutableDictionary *addresses = [NSMutableDictionarydictionaryWithCapacity:8];

    

    

   struct ifaddrs *interfaces;

   if(!getifaddrs(&interfaces)) {

        

       struct ifaddrs *interface;

       for(interface=interfaces; interface; interface=interface->ifa_next) {

           if(!(interface->ifa_flags &IFF_UP) || (interface->ifa_flags &IFF_LOOPBACK)) {

                continue;// deeply nested code harder to read

            }

           const structsockaddr_in *addr = (conststruct sockaddr_in*)interface->ifa_addr;

           if(addr && (addr->sin_family==AF_INET || addr->sin_family==AF_INET6)) {

               NSString *name = [NSStringstringWithUTF8String:interface->ifa_name];

               char addrBuf[INET6_ADDRSTRLEN];

               if(inet_ntop(addr->sin_family, &addr->sin_addr, addrBuf,sizeof(addrBuf))) {

                   NSString *key = [NSStringstringWithFormat:@"%@/%@", name, addr->sin_family ==AF_INET ? IP_ADDR_IPv4 :IP_ADDR_IPv6];

                    addresses[key] = [NSStringstringWithUTF8String:addrBuf];

                }

            }

        }

       

       freeifaddrs(interfaces);

    }

    

    

   return [addresses count] ? addresses : nil;

}

找个位置调用一下 

    

 NSString *str =   [IPHelpergetIPAddress:YES];

    

NSLog(@"%@",str);

下载地址：https://github.com/shanzhiliu/-IP.git