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Learn SwiftUI

You're reading from   Learn SwiftUI An introductory guide to creating intuitive cross-platform user interfaces using Swift 5

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Product type Paperback
Published in Apr 2020
Publisher Packt
ISBN-13 9781839215421
Length 316 pages
Edition 1st Edition
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Author (1):
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Chris Barker Chris Barker
Author Profile Icon Chris Barker
Chris Barker
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Table of Contents (17) Chapters Close

Preface 1. Getting Started with SwiftUI 2. Understanding Declarative Syntax FREE CHAPTER 3. Building Layout and Structure 4. Creating Your First Application 5. Understanding Controls, Views, and Lists 6. Working with Navigation in SwiftUI 7. Creating a Form with States and Data Binding 8. Networking and Linking to Your Existing App Logic 9. Maps and Location Services 10. Updating for iPad with NavigationViewStyle 11. SwiftUI on watchOS 12. SwiftUI versus UIKit 13. Basic Animation in Views 14. Animations in Transitions 15. Testing in SwiftUI 16. Other Books You May Enjoy

Accessing with @EnvironmentObject

Previously passing objects between views (or more specifically ViewControllers) could get a bit tricky, whilst the delegate pattern was a solid tried and tested method, passing data backup through multiple layers could get a little repetitive and in some cases complicated.

However with SwiftUI, and the use of EnvironmentObject, we don't need to worry about that anymore, as we'll learn in this next section we can take an object at the very top of our hierarchy and use this as deep as we need to within our Views; it's a global object which is accessible everywhere.

Adding and injecting the @EnvironmentObject class

To begin with, we'll need to create a class that can conform...

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