如何使用iOS创建GUID / UUID

How to create a GUID/UUID using iOS

我希望能够在iPhone和iPad上创建一个guid/uuid。

其目的是能够为所有唯一的分布式数据创建密钥。有没有一种方法可以通过iOS SDK做到这一点？

1	[[UIDevice currentDevice] uniqueIdentifier]

独特的ID of the归来你的iPhone。P＞＜／

EDIT: -[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.

如果你创建的UUID just need to several method(with this，使用ARC)：P＞＜／

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

编辑：2014年1月29日：如果你还针对前6后，现在你可以使用简单的内部法：茶多P＞＜／

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

相关讨论

在这里简单的AM is the using就绪队列，与弧。P＞＜／

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+(NSString *)getUUID
{
CFUUIDRef newUniqueId = CFUUIDCreate(kCFAllocatorDefault);
NSString * uuidString = (__bridge_transfer NSString*)CFUUIDCreateString(kCFAllocatorDefault, newUniqueId);
CFRelease(newUniqueId);

return uuidString;
}

相关讨论

你可以在含6 easily使用：P＞＜／

1 2	NSUUID UUID = [NSUUID UUID]; NSString stringUUID = [UUID UUIDString];

更多的细节在Apple的文献P＞＜／

相关讨论

苹果reviewing developer found the documentation的对象cfuuid is available on the iPhone OS 2.0及以后。P＞＜／

相关讨论

在斯威夫特P＞＜／

1 2	var uuid: String = NSUUID().UUIDString println("uuid: \(uuid)")

NSString *uuid = [[NSProcessInfo processInfo] globallyUniqueString]is to the扩技术的使用。see the nsprocessinfo类参考。P＞＜／

相关讨论

斯威夫特在3.0P＞＜／

1	var uuid = UUID().uuidString

但我的无知我uploaded快速执行objc here for of a class对象的GUID的GUID(C)：P＞＜／

1 2	Guid* guid = [Guid randomGuid]; NSLog("%@", guid.description);

它可以找到各种字符串to and from formats为好。P＞＜／