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)

Creating a hero view transition with .matchedGeometryEffect

Do you know what a hero transition is? If you don't know the term, you have still probably seen it many times – maybe in an e-commerce app, where, with a list of products, each product also has a thumbnail to show the product. Selecting a product flies it to a details page, with a big image of the same product. The smooth animation from the thumbnail to the big image is called a hero transition.

Another example is the cover image animation in the Apple Music player – transitioning from the mini player to the full player. SwiftUI provides a modifier, .matchedGeometryEffect, which makes it very easy to implement this kind of animation almost without any effort.

Getting ready

This recipe uses a few images, courtesy of Pixabay (https://pixabay.com).

You can find the images in this GitHub link, https://github.com/PacktPublishing/SwiftUI-Cookbook-2nd-Edition-/tree/main/Resources/Chapter08/recipe8,...