Geek asks and answers

How to use UUID when programming on iphone?

I want to get the UUID of iphone by programming, and also want to save it in my database.

Can I use a UUID to check if an app was purchased or not?

How can i get it?

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4 answers
NSString *udid = [[UIDevice currentDevice] uniqueIdentifier];

Took five seconds to find with the search "UDID" in the docs.

No, you cannot collect information from UDID.

See the docs UIDevicefor more information about UDIDs. In general, only UDIDs should be rarely used, since devices can be transferred to others with different iTunes accounts.

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try this code:

UIDevice *device = [UIDevice currentDevice];
NSString *uniqueIdentifier = [device uniqueIdentifier];
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Use below

   NSString *uuid = [[UIDevice currentDevice] uniqueIdentifier];
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NSString * UDID = [[UIDevice currentDevice] uniqueIdentifier];
UDID = [UDID stringByReplacingOccurrencesOfString:@"-" withString:@""];
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