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)

Working with Navigation in SwiftUI

In this chapter, we'll really start to bring our app to life by adding another View that will list our recipe in full, along with ingredients and instructions. From this, we'll learn the importance of navigation in our app, which, in turn, will allow us to tap into our existing recipe lists and populate and view our recipe in full.

This approach will require us to pass data from one View to another, which we'll cover when adding our Views to a navigation stack. From this, we'll introduce the use of EnvironmentObjects, which allow our Views to share objects globally, yet only requiring us to initialize and inject data once.

The following topics will be covered in this chapter:

  • Creating additional Views
  • App navigation
  • Accessing with @EnvironmentObject