如何使用iOS创建GUID/UUID [英] How to create a GUID/UUID using iOS

问题描述

我希望能够在iPhone和iPad上创建GUID/UUID.

I want to be able to create a GUID/UUID on the iPhone and iPad.

目的是能够为所有唯一的分布式数据创建密钥.使用iOS SDK可以做到这一点吗?

The intention is to be able to create keys for distributed data that are all unique. Is there a way to do this with the iOS SDK?

推荐答案

[[UIDevice currentDevice] uniqueIdentifier]

返回iPhone的唯一ID.

Returns the Unique ID of your iPhone.

-[UIDevice uniqueIdentifier]现在已弃用，并且正在使用的应用程序已从App Store拒绝.现在，下面的方法是首选方法.

-[UIDevice uniqueIdentifier] is now deprecated and apps are being rejected from the App Store for using it. The method below is now the preferred approach.

如果需要创建多个UUID，只需使用此方法(对于ARC):

If you need to create several UUID, just use this method (with ARC):

+ (NSString *)GetUUID
{
  CFUUIDRef theUUID = CFUUIDCreate(NULL);
  CFStringRef string = CFUUIDCreateString(NULL, theUUID);
  CFRelease(theUUID);
  return (__bridge NSString *)string;
}

2014年1月29日: 如果您定位到iOS 6或更高版本，则可以使用更简单的方法:

Jan, 29 2014: If you're targeting iOS 6 or later, you can now use the much simpler method:

NSString *UUID = [[NSUUID UUID] UUIDString];

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