我想在应用程序中找到IP地址。我能找到它。但是,问题是,它在iphone os 2.0左右工作。但是,在iphone os 3.0中它给了我一个警告:
warning: no '+currentHost' method found
warning: (Messages without a matching method signature)
我正在使用此代码,它可以与os 2.0版一起使用。
-(NSString*)getAddress {
char iphone_ip[255];
strcpy(iphone_ip,"127.0.0.1"); // if everything fails
NSHost* myhost = [NSHost currentHost];
if (myhost)
{
NSString *ad = [myhost address];
if (ad)
strcpy(iphone_ip,[ad cStringUsingEncoding: NSISOLatin1StringEncoding]);
}
return [NSString stringWithFormat:@"%s",iphone_ip];
}
如何在iphone os 3.0或更高版本的os版本中找到IP地址?
提前致谢。
答案 0 :(得分:6)
#include <arpa/inet.h>
#include <netdb.h>
#include <net/if.h>
#include <ifaddrs.h>
// retun the host name
+ (NSString *)hostname
{
char baseHostName[256];
int success = gethostname(baseHostName, 255);
if (success != 0) return nil;
baseHostName[255] = '\0';
#if !TARGET_IPHONE_SIMULATOR
return [NSString stringWithFormat:@"%s.local", baseHostName];
#else
return [NSString stringWithFormat:@"%s", baseHostName];
#endif
}
// return IP Address
+ (NSString *)localIPAddress
{
struct hostent *host = gethostbyname([[self hostname] UTF8String]);
if (!host) {herror("resolv"); return nil;}
struct in_addr **list = (struct in_addr **)host->h_addr_list;
return [NSString stringWithCString:inet_ntoa(*list[0]) encoding:NSUTF8StringEncoding];
}
答案 1 :(得分:4)
据我所知,只有一种黑客方法可以做到这一点。您基本上打开一个套接字并使用POSIX函数获取其地址。这是我用于此的代码:
http://iphonesdksnippets.com/post/2009/09/07/Get-IP-address-of-iPhone.aspx
[NSHost currentHost]
也可以使用,但它已被弃用并被Apple视为“私有API”,因此您将无法将应用程序提交到App Store。
答案 2 :(得分:4)
将此脚本放在运行PHP的Web服务器上:
<?php
$ip = getenv("REMOTE_ADDR");
echo $ip;
?>
在设备上调用此方法:
NSURL *scriptURL = [[NSURL alloc] initWithString:@"http://yourserver.com/script.php"];
NSString *ip = [NSString stringWithContentsOfURL: scriptURL encoding:NSASCIIStringEncoding error:nil];
答案 3 :(得分:3)
- (NSString *)getIPAddress {
NSString *address = @"error";
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
// it may also be en1 on your ipad3.
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;
}
使用此来获取您的IP
如果有任何错误 请使用
#include <ifaddrs.h>
#include <arpa/inet.h>
答案 4 :(得分:1)
获取IP地址有点hacky。您确定无法使用每个iPhone独有的设备ID(UDID),并且可以通过公共API轻松检索吗?
[UIDevice currentDevice].uniqueIdentifier
答案 5 :(得分:1)
还有一种获取IP地址的方法和全球IP
NSString* ip=@"http://www.whatismyip.org/";
NSURL *url = [[NSURL alloc] initWithString:ip];
NSString *ans = [NSString stringWithContentsOfURL:url encoding:NSASCIIStringEncoding error:&error];
NSLog(@"%@",ans);
上述网站将为您提供全球IP。 只需将它放在您的代码中并使用您想要的IP地址,并使用您的应用获取用户的位置,因为这将提供全局IP。
答案 6 :(得分:1)
你应该看看这个好项目: uidevice-extension
在项目中导入UIDevice-Reachability.h然后尝试使用以下命令之一:
NSString *myIp = [UIDevice localIPAddress];
NSString *myIp = [UIDevice localWiFiIPAddress];
NSString *myIp = [UIDevice whatismyipdotcom]; // is using @aamritrao solution
答案 7 :(得分:0)
bool success;
struct ifaddrs *addrs;
const struct ifaddrs *cursor;
const struct sockaddr_dl *dlAddr;
const uint8_t *base;
int i;
success = getifaddrs(&addrs) == 0;
if (success) {
cursor = addrs;
while (cursor != NULL) {
if ( (cursor->ifa_addr->sa_family == AF_LINK)
&& (((const struct sockaddr_dl *) cursor->ifa_addr)->sdl_type ==IFT_ETHER)
) {
dlAddr = (const struct sockaddr_dl *) cursor->ifa_addr;
// fprintf(stderr, " sdl_nlen = %d\n", dlAddr->sdl_nlen);
// fprintf(stderr, " sdl_alen = %d\n", dlAddr->sdl_alen);
base = (const uint8_t *) &dlAddr->sdl_data[dlAddr->sdl_nlen];
printf(" MAC address ");
for (i = 0; i < dlAddr->sdl_alen; i++) {
if (i != 0) {
printf(":");
}
printf("%02x", base[i]);
}
printf("\n");
}
cursor = cursor->ifa_next;
}
}