Swift to Objective-C header does not contain Swift classes

Question

I\'m attempting to use Swift classes in my Objective-C code, however my Swift classes don\'t seem to appear in the generated header. As a result, my build fails with \"Use o

Answer 1

Here's how I have gotten it to work. You can see a more large-scale answer here.

Change this:

class HelloWorld {    
    func hello() {
        println("hello world")
    }
}

To:

@objc class HelloWorld { 

    class func newInstance() -> HelloWorld {
        return HelloWorld()
    }

    func hello() {
        println("hello world")
    }
}

Then, In your ObjC file:

#import "TestApp-Swift.h"

And call like this:

HelloWorld * helloWorld = [HelloWorld newInstance];
[helloWorld hello];