ios NSUUID 到 NSString
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/21722841/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
NSUUID to NSString
提问by Biribu
I need to get deviceUUID from a phone in a NSString format. Now I have this:
我需要从手机以 NSString 格式获取 deviceUUID。现在我有这个：
NSString *deviceId = [UIDevice currentDevice].identifierForVendor;
Because what I had before, which was:
因为我之前所拥有的是：
NSString *deviceId = [UIDevice currentDevice].uniqueIdentifier;
Gives me an error now.
现在给我一个错误。
But with the first sentence, I got an alert:
但是在第一句话中，我收到了警报：
Incompatible pointer types initializing 'NSString *' with an expression of type 'NSUUID *'
回答by Matthias Bauch
As the error tells you, identifierForVendorreturns an object of class NSUUID, not a NSString.
正如错误告诉你的，identifierForVendor返回一个 class 的对象NSUUID，而不是一个 NSString。
If you need a NSString use this:
如果你需要一个 NSString 使用这个：
NSUUID *identifierForVendor = [[UIDevice currentDevice] identifierForVendor];
NSString *deviceId = [identifierForVendor UUIDString];
回答by onmyway133
For anyone looking for how to convert NSUUID to NSString
对于任何正在寻找如何将 NSUUID 转换为 NSString 的人
ObjC
对象
NSString *uuid = [[NSUUID UUID] UUIDString];
Swift
迅速
NSUUID().UUIDString
Swift 3
斯威夫特 3
UUID().uuidString
回答by iPatel
EDITE :As OP'srequirement I reopen my deleted answer and I mention here @Matthias'sanswer is correct and by using following code you get new device_id each time whenever run this code.
编辑：作为OP 的要求，我重新打开我删除的答案，我在这里提到@Matthias的答案是正确的，通过使用以下代码，每次运行此代码时，您都会获得新的 device_id。
Use following code:
使用以下代码：
CFUUIDRef uuidRef = CFUUIDCreate(kCFAllocatorDefault);
NSString *uuidString = (NSString *)CFBridgingRelease(CFUUIDCreateString(NULL,uuidRef));
CFRelease(uuidRef);
NSLog(@"%@", uuidString);
