问题
Disclaimer: I read through similar questions on SO, couldn't find a solution to my problem.
I want to add an subclass of SKScene to a project that did not previously use SpriteKit.
The project is a mixture of ObjC and Swift. The subclass is written in Swift.
What I did:
- Added SpriteKit.Framework by going to the project -> Build Phases -> Link Binary with Libraries .
- I created a swift class and had it inherit from SKScene.
Here is the new class:
import SpriteKit
class SnowScene: SKScene {
}
Note that the class is not references by anywhere else in the code.
When I compile my app, I get the error in the title. The error occurs in my -Swift.h file, which auto-exported the new class (I have no idea why).
SWIFT_CLASS("_TtC11MyCoolApp9SnowScene")
@interface SnowScene : SKScene
@end
Does anyone have any idea what am I doing wrong and how to circumvent this problem?
回答1:
I'm assuming you did import SpriteKit in your source file or you would have gotten an error in the Swift compile phase.
This sounds like a bug in Swift where it's not correctly detecting that you are using SpriteKit. Normally, these dependencies are detected and inserted at the top of -Swift.h in an import section, around line 88:
#if defined(__has_feature) && __has_feature(modules)
@import Foundation;
@import UIKit;
@import ObjectiveC;
...
#endif
If SpriteKit isn't in that list, you're looking at a compiler bug and should file a radar with Apple.
If you have a bridging header, you will notice that right below those imports is:
#import "/Users/.../...-Bridging-Header.h"
If not, you should add one. I believe adding a single Objective-C file will trigger Xcode to do the work for you.
Including the line #import <SpriteKit/SpriteKit.h> in your bridging header will ensure that SpriteKit gets imported before your class is declared.
来源：https://stackoverflow.com/questions/33809938/swift-error-cannot-find-interface-declaration-for-skscene-superclass-of