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)

Advanced transitions

As we saw in the previous section, combining both animations and transitions needn't be a headache. Yet, in addition to the basic approach, SwiftUI also gives us some alternative options to work with, allowing for more creativity in how we handle not only transitions on their own, but also alongside our existing animation options.

Asymmetric transitions

Asymmetric transitions are a way of adding and removing views based on their current state without the need for additional or duplicated logic.

Let's take a look at our previous example and see how we would achieve this:

Button("Basic Transitions") {
withAnimation {
if transition {