Book Image

Learn SwiftUI

By : Chris Barker
Book Image

Learn SwiftUI

By: Chris Barker

Overview of this book

SwiftUI is the new and powerful interface toolkit that lets you design and build iOS, iPadOS, and macOS apps using declarative syntax. It is a powerful way to develop the UI elements of applications, which would normally be tightly coupled to application logic. Learn SwiftUI will get you up to speed with the framework and cross-device UI development in no time. Complete with detailed explanations and practical examples, this easy-to-follow guide will teach you the fundamentals of the SwiftUI toolkit. You'll learn how to build a powerful iOS and iPadOS application that can be reused for deployment on watchOS. As you progress, you'll delve into UI and unit testing in iOS apps, along with learning how to test your SwiftUI code for multiple devices. The book will also show you how to integrate SwiftUI features such as data binding and network requests into your current application logic. By the end of this book, you will have learned how to build a cross-device application using the SwiftUI framework and Swift programming.
Table of Contents (17 chapters)

SwiftUI on watchOS

Welcome to Chapter 11! In this chapter, we are going to create our very own Apple Watch Companion app. For our iOS recipe app, we'll start by covering how we actually develop for watchOS and how Xcode interprets our Watch App within our current project.

We'll then create our Watch project and see how we can integrate it with our current project, reusing some of our existing code.

After that comes the good stuff. We'll look at how we can use the power of SwiftUI to easily create multiple watch interfaces with just a couple of lines of code and by dropping in with ease familiar syntax we've used earlier.

Finally, we'll hook up our iOS app and Watch App, and send newly created recipes straight over to our watch so that we can check our ingredients on the go.

The following topics will be covered in this chapter:

  • Developing for watchOS
  • Creating...