I updated to Xcode 8 beta 5, and now get the following error on a class that inherits from UIView:
Method does not override any method from its superclass override public func intrinsicContentSize() -> CGSize { ... } Is there a workaround?
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2 Answers
Please check the latest reference. (You can easily find it just putting the word "intrinsicContentSize" in the searchbar of Apple's developer site.)
Declaration
var intrinsicContentSize: CGSize { get }
intrinsicContentSize has become a computed property, so you need to override it in this way:
override open var intrinsicContentSize: CGSize { get { //... return someCGSize } } Or simply:
override open var intrinsicContentSize: CGSize { //... return someCGSize } 
5 Comments
GoldenJoe
Is there any resource that lists the recent changes?
OOPer
@GoldenJoe, there is iOS 9.3 to iOS 10.0 API Differences. But it's a huge list and I'd rather use seachbar than check the Diffs.
GoldenJoe
Thanks, did you just search for "iOS Diffs" or something to find this? It is huge, but it's nice to browse the things you use frequently.
OOPer
@GoldenJoe, Diffs can be found in iOS Developer Library(current) or [Guides and Sample Code](future version), with Resource Type "Release Notes". Please check.
Krishnadas PC
Read the source file of
UIView class you will see how it has been changed.While transitioning from one version of Xcode to another, there is different ways to find out why your code does not compile anymore. Here are a few resources for intrinsicContentSize:
- You can search for
intrinsicContentSizefrom developer.apple.com. - You can search for
intrinsicContentSizestraight from Apple Developer API Reference page for UIView. - You can open the iOS 10.0 API Diffs for UIKit page and search for instances of
intrinsicContentSizewith your browser's find menu (shortcut: cmd + F). - You can search for
intrinsicContentSizefrom Xcode's Documentation and API Reference (path: Help > Documentation and API Reference, shortcut: shift + cmd + 0). - You can also right-click on any
UIViewinitializer in your Xcode code (for example,UIView()), select Jump to Definition and then perform a search forintrinsicContentSize.
These searches will show you that intrinsicContentSize, with Swift 3 and iOS 10, is no more a method but a computed property of UIView that has the following declaration:
var intrinsicContentSize: CGSize { get }
As a consequence, you will have to replace your intrinsicContentSize() method implementation with the following code snippet:
override public var intrinsicContentSize: CGSize { return ... } 