Let’s start with the basics: Importing ObjC into Swift How to Import ObjC into Swift and Swift into ObjC, This helped us understand how different attributes affect public APIs. Special Mention to Xcode’s Generated Interfaceīefore we go into details, we’d like to say a huge “thank you” to this square-chain guy and his friend, Generated Interface.īasically, Xcode would generate Swift interfaces from ObjC files, and an ObjC header file from Swift files, so you can look at how one language imports declarations from another.
This meant we could write 95% in Swift with edge cases written in ObjC. Although writing a project in a mix of Objective-C and Swift is the worst of both worlds, because it limits the full utilization of Swift’s advanced features, the public API wasn’t too complex. To avoid making it difficult for our client to support the project in the future, we consciously decided to write as little ObjC as possible while adhering to their objectives. We know it’s becoming harder to find skilled developers that are proficient in ObjC. The client trusted our expertise in coming up with the best course of action. Make the public API feel native to Objective-C and Swift developers Write an SDK that can be consumed by Objective-C and Swift appsĢ. On the face of things, our client’s objectives were quite straightforward:ġ. Writing an SDK in Swift, ObjC, or a Mix of Both: Client Requirements and Our Approach In addition, Objective-C boasts excellent interoperability with C and C++. This begs the question why would we need to do anything with ObjC these days? Well, despite Apple’s intention to replace Objective-C, there’s still a substantial amount of developers keeping the language alive and tons of core iOS and MacOS programs written in Objective-C (that won’t be going anywhere anytime soon). On the other hand, Objective C is nearly 40 years old and Swift applications use up to 70% less code. Released in 2014, Apple claims that Swift is 2.6 times faster than Objective-C while being easier and safer to develop with.
Protocols and their role in defining interface contracts between components of an application.Data types such as integers, strings, arrays and objects.Swift and/or Objective C programming languages.To make the most of this post, you will need an understanding of Our Senior iOS Developer, Denis Bogomolov, takes us through the technical challenges of creating interoperable frameworks for Swift and ObjC – highlighting some of the complex problems we overcame. Converting Objective-C to Swift and vice-versa can be a grueling task, but not for our expert iOS team. A large enterprise came to us with the objective of writing an iOS SDK for Swift and Objective-C developers.
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