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)

App navigation

As with the majority of apps, navigation plays a massive part in how a user interacts with it—especially moving from one View to another View and, more importantly, moving back again. Navigation, or UINavigationController as you may have heard it referred to as, works with the concept of a navigation stack with a RootViewController, from where your navigation starts.

When implemented, by default, iOS will provide you with a navigation bar at the top of your screen and, in the navigation bar, you can add bar button items (such as back), title text, or a title view. Each time you move forward from one view to another, Navigation keeps track of this in its stack—this is often referred to as a push. When moving back through the stack, this is referred to as a 'pop'.

In this section, we'll incorporate navigation in our app, allowing us to...