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iOS

Posted by Michiko Perry
Michiko Perry
3,617 Points

QuartzCore Framework

Do I need to add Quartz Core Framework every time? I really appreciate if you explain what it is for or any link that I can learn more. Thanks.

1 Answer

Gabe Nadel
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STAFF
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Gabe Nadel
Treehouse Guest Teacher
Gabe Nadel
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Gabe Nadel
Treehouse Guest Teacher

As per the docs: [QuartzCore is a framework that] supports image processing and video image manipulation.

https://developer.apple.com/library/prerelease/ios/documentation/GraphicsImaging/Reference/QuartzCoreRefCollection/index.html

In general, you would want to import that framework or just about any framework you planned on using in the file. So in answer to your question, if you code makes use of QuartzCore objects or methods, you'll want to make sure you have access to it. However, as of iOS 7, with QuartzCore, you actually don't have to explicitly import it, provided UIKit is imported. This is because UISlider is already imported within UIKit. Specifically, it makes use of the CALayer class.

Michiko Perry
Michiko Perry
3,617 Points

Thanks for your reply. I've been taking Swift language and among Amit and Pasan's videos, they have never touched about QuartzCore. I guessed it is for Objective-C, or is it still necessary in Swift programming? (I don't have any knowledge about Objective-C.) Thanks for your help.