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
I had exactly the same issue. Found the solution after adding a new file aiming to only one target (by mistake) and noticing that it had no problem reading the Swift classes. So, if you have multiple targets, and since the migration you didn't have the need to build and run them, suggest you to do that.