Book Image

SwiftUI Cookbook - Second Edition

By : Giordano Scalzo, Edgar Nzokwe
Book Image

SwiftUI Cookbook - Second Edition

By: Giordano Scalzo, Edgar Nzokwe

Overview of this book

SwiftUI provides an innovative and simple way to build beautiful user interfaces (UIs) for all Apple platforms, from iOS and macOS through to watchOS and tvOS, using the Swift programming language. In this recipe-based cookbook, you’ll cover the foundations of SwiftUI as well as the new SwiftUI 3 features introduced in iOS 15 and explore a range of essential techniques and concepts that will help you through the development process. The cookbook begins by explaining how to use basic SwiftUI components. Once you’ve learned the core concepts of UI development, such as Views, Controls, Lists, and ScrollViews, using practical implementations in Swift, you'll advance to adding useful features to SwiftUI using drawings, built-in shapes, animations, and transitions. You’ll understand how to integrate SwiftUI with exciting new components in the Apple development ecosystem, such as Combine for managing events and Core Data for managing app data. Finally, you’ll write iOS, macOS, and watchOS apps by sharing the same SwiftUI codebase. By the end of this SwiftUI book, you'll have discovered a range of simple, direct solutions to common problems encountered when building SwiftUI apps.
Table of Contents (17 chapters)

Lottie animations in SwiftUI

You probably already know about Lottie (https://airbnb.design/lottie/), which is a library for embedding animations made in Adobe After Effects in iOS.

Lottie fills the gap between motion designers and developers; designers can implement their animations using their favorite tool and then export them in JSON format to be used by developers, reproduced in high quality on a device. In this recipe, we'll use an animation downloaded from https://lottiefiles.com/, where you can find thousands of animations, either free or paid, so it is definitely a website to keep an eye on.

Getting ready

In this recipe, we'll use a resource, filling-heart.json, that we can find in the GitHub repo, and we'll import Lottie using Xcode's Swift Package Manager integration.

Let's start by creating a SwiftUI project called LottieInSwiftUI.

Then, add the filling-heart.json file, which you can find in the GitHub repo at https://github.com/PacktPublishing...