Comments on: Objective C Get iPhone Device GUID http://www.timeister.com/2009/06/objective-c-get-iphone-device-guid/ Online Project Management Software Sun, 18 Jul 2010 21:36:58 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Dylan Barrie http://www.timeister.com/2009/06/objective-c-get-iphone-device-guid/comment-page-1/#comment-34 Dylan Barrie Wed, 02 Dec 2009 12:41:10 +0000 http://blog.timeister.com/?p=312#comment-34 This code is fundamentally flawed. The UIDevice retrieved via +[UIDevice currentDevice] is not initialized, retained, or copied by the calling function, nor does 'currentDevice' have the words 'init' or 'copy' in it. The returned device MUST NOT be released, since it was not retained, initialized, or copied. UIDevice *device = [UIDevice currentDevice]; NSString *uniqueIdentifier = [device uniqueIdentifier]; is correct. This code is fundamentally flawed. The UIDevice retrieved via +[UIDevice currentDevice] is not initialized, retained, or copied by the calling function, nor does ‘currentDevice’ have the words ‘init’ or ‘copy’ in it. The returned device MUST NOT be released, since it was not retained, initialized, or copied.

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

is correct.

]]> By: Kristian Glass http://www.timeister.com/2009/06/objective-c-get-iphone-device-guid/comment-page-1/#comment-33 Kristian Glass Wed, 02 Dec 2009 11:58:50 +0000 http://blog.timeister.com/?p=312#comment-33 Please see http://developer.apple.com/documentation/Cocoa/Conceptual/MemoryMgmt/MemoryMgmt.html and http://developer.apple.com/documentation/Cocoa/Conceptual/MemoryMgmt/Articles/mmRules.html - you should *NOT* release device, as you have not (alloc/new/copy/retain)-ed it. Please see http://developer.apple.com/documentation/Cocoa/Conceptual/MemoryMgmt/MemoryMgmt.html and http://developer.apple.com/documentation/Cocoa/Conceptual/MemoryMgmt/Articles/mmRules.html – you should *NOT* release device, as you have not (alloc/new/copy/retain)-ed it.

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