Xcode 8 with mixed Swift and Objective-c project generated “ModuleName-Swift.h” header not found

Question

I have a project with mixed Swift and Objective-C in Xcode 8 that uses the generated \"ModuleName-Swift.h\" header file to import swift into Objective-c classes, but the pre

Answer 1

If

• your product's normal targets run fine, but
• you get the error when running your test targets…

note that each target uses (and should use) a different filename for the Objective-C Generated Interface Header Name.

This means you cannot import the generated header file in your Objective-C .h files, because they won't be found in the test target:

Instead, you should move these #import statements into your Objective-C .m (implementation files), where they'll build successfully.

---

If you need to refer to Swift classes in a .h file, use the @class directive, e.g.:

//
//  ViewController.h
//  import-example
//

#import 

@class SomeSwiftClass;

@interface ViewController : UIViewController

- (NSString *) titleFromGenerator:(SomeSwiftClass *)generator;

@end