ios7后mac地址沦为鸡肋,所以必须得重新想办法获取设备的id信息,apple推荐用UUID,但app重新安装后,UUID需要重设,所以想到把UUID存储到ios系统的keychain中,既然存储在系统内,也就意味着即使app被删除也不会丢失该属性。
//ios获取uuid
#import "KeychainItemWrapper.h"
KeychainItemWrapper *keychainItem = [[KeychainItemWrapperalloc]
initWithIdentifier:@"UUID"
accessGroup:@"com.game.userinfo"];
NSString *strUUID = [keychainItem objectForKey:(id)kSecValueData];
if ([strUUID isEqualToString:@""])
{
CFUUIDRef uuidRef = CFUUIDCreate(kCFAllocatorDefault);
strUUID = (NSString *)CFUUIDCreateString (kCFAllocatorDefault,uuidRef);
[keychainItem setObject:strUUID forKey:(id)kSecValueData];
}
[keychainItem release];
std::string device_uuid = [strUUID UTF8String];
ps:注意引入 Security.framework 库!上面的KeychainItemWrapper类从以下地址下载
除了上面的方法,还有一个轻量级的方法,推荐使用这个,使用超级简单,而且完全开源
首先去系统取“uuid”字段,如果有直接使用,如果没有,则create一个uuid并存入keychain中
NSString *retrieveuuid = [SSKeychainpasswordForService:@"com.game.userinfo"account:@"uuid"];
if ( retrieveuuid == nil || [retrieveuuid isEqualToString:@""])
{
CFUUIDRef uuid = CFUUIDCreate(NULL);
assert(uuid != NULL);
CFStringRef uuidStr = CFUUIDCreateString(NULL, uuid);
retrieveuuid = [NSString stringWithFormat:@"%@", uuidStr];
[SSKeychain setPassword: retrieveuuid
forService:@"com.game.userinfo"account:@"uuid"];
}
注意导入
SSKeychain这个类,可以去http://github.com/soffes/sskeychain上下载代码文件,good luck!