How can I import Swift code to Objective-C?

Question

I have written a library in Swift and I wasn\'t able to import it to my current project, written in Objective-C.

Are there any ways to import it?

#i         


        

Answer 1

If you want to use Swift file into Objective-C class, so from Xcode 8 onwards you can follow below steps:

If you have created the project in Objective-C:

1. Create new Swift file
2. Xcode will automatically prompt for Bridge-Header file
3. Generate it
4. Import "ProjectName-Swift.h" in your Objective-C controller (import in implementation not in interface) (if your project has space in between name so use underscore "Project_Name-Swift.h")
5. You will be able to access your Objective-C class in Swift.

Compile it and if it will generate linker error like: compiled with newer version of Swift language (3.0) than previous files (2.0) for architecture x86_64 or armv 7

Make one more change in your

6. Xcode -> Project -> Target -> Build Settings -> Use Legacy Swift Language Version -> Yes

Build and Run.