Using Swift object class in Objective-C

Question

Hello I have been looking at different questions regarding this and none of the solution seem to work for me. I have an object which I am trying to use in objective C, however I keep getting the 'No visible interface for object' when trying to initialize the object. I have properly imported my module into the objective C file and added the @objc annotation am i missing something? thank you in advance!

Code:

Swift-

import UIKIT

@objc class SaveFile: NSOBject {
 var name: String?
 var location: String?

//@objc(initId:andSize:) does not work
init(id: String, size: String) {
    super.init()
   //other code
}

}

Objective C -

    import "testProject-Swift.h"

// functions and initializers

-(void) saveFile {
    SaveFile *fileToSave = [[SaveFile alloc] initWithId:self.currentId size:self.size] //No visible @interface for 'SaveFile' declares the selector 'initWithId:Size:'

}

Answer 1

Try this:

@objcMembers
class SaveFile: NSObject {//<-NSObject, not NSOBject
    var name: String?
    var location: String?

    init(id: String, size: String) {
        super.init()
        //other code
    }

}

When you write a class which is used in Objective-C code, it's an easy way to annotate with @objcMembers.

Or else, you can annotate all properties and methods including initializers with @objc:

class SaveFile: NSObject {
    @objc var name: String?
    @objc var location: String?

    //@objc(initWithId:size:) do work
    @objc init(id: String, size: String) {
        super.init()
        //other code
    }
}