Adding swift file into Objective-c project

Question

How to add .swift file into existing Objective-c project and make access to objective-c file

Answer 1

1. Create .swift file suppose newSwiftController.swift
2. automatically bridging file get appeared allow it to be created.
3. add #import "ProjectName-Swift.h" into implementation .m file where you want to access your newly created .swift file.
4. go to project target - Build Setting -> search for Defines module and set it to YES