> On Apr 14, 2017, at 7:41 PM, Rick Mann via swift-users
> <swift-users@swift.org> wrote:
>
> I'm refactoring some Objective-C code to inherit from a new Swift super
> class. This has been going okay, and I've been cleaning up build errors as I
> spot them (some auxiliary enums caused enum name changes, etc.).
>
> But my last error seems to be that I can't subclass the Swift class: "Cannot
> subclass a class with objc_subclassing_restricted attribute". I didn't notice
> it before, and all the online references that say you can't subclass a Swift
> class point to a Swift document that no longer mentions that. They also don't
> say what they mean by "Swift" class (e.g. is it not marked with @objc?).
>
> In any case, my Swift class looks like:
>
> @objc
> class
> Camera : NSObject
> {
> ...
> }
>
> And my ObjC class looks like:
>
> @interface
> MCPCamera : Camera
>
> ...
>
> @end
>
> I feel like this is a reasonable thing to try to do. Is it just not possible?
Subclassing Swift classes from Objective-C is not supported. If the
documentation no longer mentions that restriction, we should fix that. Where is
that document that you're referring to?
-Joe
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