NSUUID到NSString

Question

我需要以NSString格式从手机获取deviceUUID.现在我有这个:

NSString *deviceId = [UIDevice currentDevice].identifierForVendor;

因为我以前拥有的是:

NSString *deviceId = [UIDevice currentDevice].uniqueIdentifier;

现在给我一个错误.

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 *'

Answer 1

正如错误告诉您的那样,identifierForVendor返回类的对象NSUUID,而不是NSString.

如果你需要一个NSString使用这个:

NSUUID *identifierForVendor = [[UIDevice currentDevice] identifierForVendor];
NSString *deviceId = [identifierForVendor UUIDString];

Answer 2

对于任何想要如何将NSUUID转换为NSString的人

ObjC

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

迅速

NSUUID().UUIDString

斯威夫特3

UUID().uuidString