Book Image

SwiftUI Cookbook

By : Giordano Scalzo, Edgar Nzokwe
Book Image

SwiftUI Cookbook

By: Giordano Scalzo, Edgar Nzokwe

Overview of this book

SwiftUI is an innovative and simple way to build beautiful user interfaces (UIs) for all Apple platforms, right from iOS and macOS through to watchOS and tvOS, using the Swift programming language. In this recipe-based book, you’ll work with SwiftUI and explore a range of essential techniques and concepts that will help you through the development process. The recipes cover the foundations of SwiftUI as well as the new SwiftUI 2.0 features introduced in iOS 14. Other recipes will help you to make some of the new SwiftUI 2.0 components backward-compatible with iOS 13, such as the Map View or the Sign in with Apple View. The cookbook begins by explaining how to use basic SwiftUI components. Then, you’ll learn the core concepts of UI development such as Views, Controls, Lists, and ScrollViews using practical implementation in Swift. By learning drawings, built-in shapes, and adding animations and transitions, you’ll discover how to add useful features to the SwiftUI. When you’re ready, 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 while 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 found in building SwiftUI apps.
Table of Contents (15 chapters)

Implementing SwiftUI Sign in with Apple

In this recipe, you'll learn how to use Sign in with Apple in a SwiftUI app. Apple enforces the use of this method for authentication, making it mandatory if an app uses a third-party social login such as Facebook or Google, so it's a useful skill to learn.

Sign in with Apple is the official method Apple uses for authentication and SwiftUI supports it natively.

Since the native SwiftUI Sign In with Apple button was added in iOS 14, the app deployment target must be iOS 14.

We are going to implement a simple app that permits us to log in using our Apple ID and presents our credentials once we are logged in.

Important Note

Sign in with Apple doesn't work reliably with a simulator, so for this recipe, I recommend using a real iOS device.

The app we are going to implement is very basic, but it will give you the foundation for building something more sophisticated. However, there are a couple of points that we must...