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)

Adding transitions to our app

Now that we've mastered the art of basic transitions, let's continue to work these into our app so we can really fine-tune our UI.

In this section, we'll add some basic transitions to our app, looking specifically at moving text with transitions. Then we'll take what we have learned with advanced transitions by incorporating asymmetric and combined transitions alongside the existing animations that we added in Chapter 13, Basic Animation in Views.

Transition validation

We'll start off with something simple. Head on over to AddRecipeView.swift and add the following @State variable:

@State private var validated = false

Now add the following just below your Save button: