SwiftUI Cookbook: Discover solutions and best practices to tackle the most common problems while building SwiftUI apps

Unleash the power of declarative programming in SwiftUI with practical recipes for building cross-platform Apple applications for iOS 14, macOS, and watchOS using Swift 5.3, Xcode 12, and SwiftUI 2.0

Key Features

• Apply the declarative programming paradigm for building cross-platform UIs for Apple devices
• Learn to integrate UIKit, Core Data, Sign in with Apple, and Firebase with SwiftUI
• Adopt the new SwiftUI 2.0 features to build visually appealing UIs at speed

Book Description

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.

What you will learn

• Explore various layout presentations in SwiftUI such as HStack, VStack, LazyHStack, and LazyVGrid
• Create a cross-platform app for iOS, macOS, and watchOS
• Get up to speed with drawings in SwiftUI using built-in shapes, custom paths, and polygons
• Discover modern animation and transition techniques in SwiftUI
• Add user authentication using Firebase and Sign in with Apple
• Handle data requests in your app using Core Data
• Solve the most common SwiftUI problems, such as integrating a MapKit map, unit testing, snapshot testing, and previewing layouts

Who this book is for

This book is for mobile developers who want to learn SwiftUI as well as experienced iOS developers transitioning from UIKit to SwiftUI. The book assumes knowledge of the Swift programming language. Knowledge of object-oriented design and data structures is useful but not necessary.

Table of Contents

1. Using the Basic SwiftUI Views and Controls
2. Going Beyond the Single Component with List and Scroll Views
3. Viewing while Building with SwiftUI Preview
4. Creating New Components and Grouping Views in Container Views
5. Presenting Extra Information to the User
6. Drawing with SwiftUI
7. Animating with SwiftUI
8. Driving SwiftUI with Data
9. Driving SwiftUI with Combine
10. Handling Authentication and Firebase with SwiftUI
11. Handling Core Data in SwiftUI
12. Cross-Platform SwiftUI
13. SwiftUI Tips and Tricks

Giordano Scalzo is a developer with 20 years of programming experience, since the days of ZX Spectrum. He has worked in Swift, Objective-C, C/C++, Java, .Net, Ruby, Python, and in a ton of other languages that he has forgotten the names of. After years of backend development, over the past 5 years, Giordano has developed extensively for iOS, releasing more than 20 apps-apps that he wrote for clients, enterprise applications, or on his own. Currently, he is a contractor in London, where he delivers code for iOS through his company, Effective Code Ltd, with the objective being quality and reliability.

Edgar Nzokwe is a software engineer at Booz Allen and an adjunct computer science instructor at Howard Community College in Maryland. He has more than 5 years of experience in the field of software engineering and has spent most of that time building web and mobile applications. His areas of expertise include SwiftUI, UIKit, and Kotlin. Edgar is dedicated to advancing the knowledge base of SwiftUI because he believes it will significantly improve UI and cross-platform app development time.