How to access Swift class from Objective-C class?

Question

I want to access swift class(variables and methods) in my objC class.

I have created a YourProjectName-Swift.h file.

set "Defines Module" to YES in build setting
check Product Module Name the same with my swift file name.
set Install Objective-C Compatibility Header to YES
set Objective-C Generated Interface Header : YourProjectName-Swift.h
then Import Swift interface header in *.m file.

#import "YourProjectName-Swift.h"

My swift class is:

@objc public class MySwiftClass: UIView {

    override init(frame: CGRect) {
        super.init(frame: frame)
        addBehavior()
    }

    
    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        addBehavior()
    }

    func addBehavior() {
        print("Add all the behavior here")
    }
}

How can I access this class from an Objective-C file?

I tried to initiate my swift class object with the below, but it's not working.

MySwiftClass *swift = [[MySwiftClass alloc] init];

did autocomplete not work? because in the MySwiftClass you need frame param for init, but you called init without any param — aiwiguna, Jul 08 '20 at 07:09
Please check this URL :- https://pinkstone.co.uk/how-to-use-swift-classes-in-objective-c/ — Tajinder singh, Jul 08 '20 at 07:50
i tested with new project, its working fine. but its taking some time to show swift class in objective c class. when i run the build and after i tried, suggestion are showing, please check this URL :- https://pinkstone.co.uk/how-to-use-swift-classes-in-objective-c/ — Tajinder singh, Jul 08 '20 at 08:04
Does this answer your question? [How can I import Swift code to Objective-C?](https://stackoverflow.com/questions/24102104/how-can-i-import-swift-code-to-objective-c) — pkamb, Jul 10 '20 at 17:28

score 0 · Answer 1 · answered Jul 10 '20 at 16:40

You shouldn't create YourProjectName-Swift.h file. It will be generated automatically for you!

Just import YourProjectName-Swift.h in your ObjC class where you want to access swift class, and use it.

Considerations:

If your target name contains spaces, replace them with underscores (e.g. Your Project Name becomes Your_Project_Name-Swift.h)

If your target is a framework, you need to import <YourProjectName/YourProjectName-Swift.h>

How to access Swift class from Objective-C class?

1 Answers1