//獲取手機的ip

NSString*ip = [GJWIPHelper ? ?deviceIPAdress];

//獲取IP的.h文件

#import

@interfaceGJWIPHelper :NSObject

+ (NSString*)deviceIPAdress;//獲取設備局域網中IP地址

@end

//獲取IP的.m文件

#import"GJWIPHelper.h"

#include <ifaddrs.h>

#include ?<arpa/inet.h>

@implementationGJWIPHelper

+ (NSString*)deviceIPAdress {

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

structifaddrs ?*interfaces =NULL;

structifaddrs ? *temp_addr =NULL;

intsuccess =0;

success =getifaddrs(&interfaces);

if(success ==0) {// 0表示獲取成功

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->if ?a_name] ?isEqualToString:@"en0"]) {

// Get NSString from C String

address = [NSString ? ? stringWithUTF8String:inet_ntoa(((structsockaddr_in*)temp_addr->ifa_addr)->sin_addr)];

}

}

temp_addr = temp_addr->ifa_next;

}

}

freeifaddrs(interfaces);

return ? address;

}

@end

注：不喜勿噴！！！