替代udid方法

转载自：https://github.com/gekitz/UIDevice-with-UniqueIdentifier-for-iOS-5

  gekitz authored 9 months ago

	Classes	a year ago	Fix possible memory leak if sysctl fails [fleitz]
	UIDeviceAddition.xcodeproj	2 years ago	README and Licence update [gekitz]
	UIDeviceAddition	2 years ago	added global unique identifier for tracking between different apps [gekitz]
	README.markdown	9 months ago	Better Readme [gekitz]
	license	a year ago	Update license [gekitz]

 README.markdown

Description

Apple stopped supporting a unique identifier for iOS. This source code solves the problem. It generates a unique identifier based on the mac address of the device in combination with the bundle identifier.

What you need to do:

• copy NSString+MD5Addition and UIDevice+IdentifierAddition to your project.

• if your are using ARC in your project, you have to add the -fno-objc-arc flag to both files. Apple ARC Guidelines

• use [[UIDevice currentDevice] uniqueDeviceIdentifier] to retrieve the unique identifier (it's a hash of your Bundle ID + MAC address)

• use [[UIDevice currentDevice] uniqueGlobalDeviceIdentifier] to retrieve a global unique identifier (it's a hash of the MAC address, used for tracking between different apps).

• have fun and follow gekitz ;)

//Thanks to Erica Sadun for her UIDevice+Hardware Addition (used for the mac address retrieval).

License

see license file.