casmvp.blogg.se

Objective c to swift migration
Objective c to swift migration





objective c to swift migration

But wait, we have a huge problem now.Īdding public in front of our Swift classes and methods we are making them, you guess, public. Now we can start using Swift inside Objective-C code, yay ?. They also have to be marked with before the class name and they have to inherit from NSObject.

objective c to swift migration

The generated header file is part of the framework's public interface and only Swift classes which are marked as “Public” or “Open” will be accessible from Objective-C code. To use Swift, we need to make some adjustments to our code. Step 3 – How to use Swift code inside ObjC Now that we are all set up, we can import our Swift file into Objective-C like this: #import Īnd you can start using Swift if you are lucky. Next, go to “Build Settings” of your framework project and locate “Defines Module” and set it to “YES” This is important since we will be using it to import Swift code into Objective-C. This generated interface header should be named as follows: “YourSDK-Swift.h”. If you don’t have a bridging header, it’s very simple to create one manually.Ĭreate a new Swift file and the popup will appear like on the image above, just click on “Create Bridging Header”. This is generated automatically by Xcode when you create or insert Swift files into your project. To import Swift code in Objective-C first of all you need to have an Objective-C bridging header. This is recommended by Apple and you can read more details about it on this documentation page. Change enum to NS_ENUM, this will improve code competition in Xcode and will specify the type and size of your enums.When creating properties you get by default getter and setter methods automatically, you will also have access to property attributes such as: weak, assign, retain etc.

objective c to swift migration

  • Use properties instead of instance variables where applicable.
  • Instead of id as a return type your class uses instancetype, which will improve type safety.
  • Let’s start! Step 1 – Modernize your Objective-C codeįirst of all make sure that every new file you create, if possible, is in Swift, if not, modernize your Objective-C code. I faced a lot of challenges that I will describe in order to help you out if you decide to start with this project (and also to have a reference for myself if I have to do it again). I thought that the process would be fairly straightforward, but I was wrong. Why do you want to do it?įor us it was easy, we wanted to have a framework that will be fully compatible with Swift, use new patterns and features found only in Swift, be easier to read, and maintain and have a modern codebase for new developers joining the team. Before you start converting Objective-C code to Swift first you will have to ask yourself if is it worth it.







    Objective c to swift migration