为什么我的唯一设备ID会发生变化? [英] Why did my unique device ID change?
问题描述
我使用以下方法大约一个月没有问题。即使在卸载应用程序后,设备ID仍保持不变。最近我注意到我的设备ID已更改。我最近在Xcode6上做了很多应用程序的构建。这可能是一个原因吗?我希望我知道它何时改变了。它让我感到意外。当应用程序进入应用程序商店时,我有什么可担心的吗?也许这只是一个Xcode构建问题?我只是想找一种简单的方法来保证唯一的设备ID。我会使用advertisingIdentifer,但我听说将其用于其他目的,然后广告将被app store拒绝。以下是代码:
I have been using the following method for around a month with no problem. The device ID remained the same even after uninstalls of the app. Recently I noticed that my device ID changed. I have been doing a lot of builds of the app recently on Xcode6. Could this be a cause? I wish I knew exactly when it changed. It caught me by surprise. Do I have anything to worry about when the app goes on the app store? Maybe this is just an Xcode build problem? I am just looking for a simple way to guarantee a unique device ID. I would use advertisingIdentifer but I hear using it for purpose other then advertisements will get rejected by app store. Here is the code:
+ (NSString *)getUserID
{
NSString *Appname = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleName"];
NSString *retrieveuuid = [SSKeychain passwordForService:Appname account:@"user"];
if(retrieveuuid == NULL)
{
CFUUIDRef newUniqueId = CFUUIDCreate(kCFAllocatorDefault);
retrieveuuid = (__bridge_transfer NSString*)CFUUIDCreateString(kCFAllocatorDefault, newUniqueId);
CFRelease(newUniqueId);
[SSKeychain setPassword:retrieveuuid forService:Appname account:@"user"];
}
NSLog(@"%@", retrieveuuid);
return retrieveuuid;
}
推荐答案
唯一的设备ID没有坚持这已经被问过很多次了,你应该在这里找到一些好的信息。快速谷歌搜索会带来以下内容。
The unique device id does not persist This has been asked many times before and you should find some good info on here. A quick Google search brings up the following.
https://stackoverflow.com/search?q = iOS + UDID +替换
UIDevice uniqueIdentifier已弃用 - 现在该怎么办?
一般建议是使用 CFUUID
创建你自己的 UUID
,然后将其保存在 keychain
general advice is to use CFUUID
to create your own UUID
, then persist it in the keychain
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