Call an Objective-C Method from Swift app

Question

I am making a Mac app, entirely in Swift. Now, I need to add an Objective-C function to the app, but I can\'t figure out how. I have very little knowledge about Objective-C, but

Answer 1

Here's the solution for an iOS app:

File Thing.h:

#import 

@interface Thing : NSObject

void MyCreatePDFFile (CGRect pageRect, const char *filename);

@end

File Thing.m:

#import "Thing.h"

@implementation Thing

void MyCreatePDFFile (CGRect pageRect, const char *filename) {
    // ... your code here ...
}

@end

In the bridging header:

#import "Thing.h"

Now your Swift code can see and call this function.