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SwiftUI Cookbook

You're reading from   SwiftUI Cookbook A guide for building beautiful and interactive SwiftUI apps

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Product type Paperback
Published in Dec 2023
Publisher Packt
ISBN-13 9781805121732
Length 798 pages
Edition 3rd Edition
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Author (1):
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Juan C. Catalan Juan C. Catalan
Author Profile Icon Juan C. Catalan
Juan C. Catalan
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Table of Contents (20) Chapters Close

Preface 1. Using the Basic SwiftUI Views and Controls 2. Displaying Scrollable Content with Lists and Scroll Views FREE CHAPTER 3. Exploring Advanced Components 4. Viewing while Building with SwiftUI Preview in Xcode 15 5. Creating New Components and Grouping Views with Container Views 6. Presenting Views Modally 7. Navigation Containers 8. Drawing with SwiftUI 9. Animating with SwiftUI 10. Driving SwiftUI with Data 11. Driving SwiftUI with Combine 12. SwiftUI Concurrency with async await 13. Handling Authentication and Firebase with SwiftUI 14. Persistence in SwiftUI with Core Data and SwiftData 15. Data Visualization with Swift Charts 16. Creating Multiplatform Apps with SwiftUI 17. SwiftUI Tips and Tricks 18. Other Books You May Enjoy
19. Index

Using disclosure groups to hide and show content

DisclosureGroup is a view that's used to show or hide content based on the state of disclosure control. It takes two parameters: a label to identify its content and a binding that controls whether the content is visible or hidden. Let's take a closer look at how it works by creating an app that shows and hides content in a disclosure group.

Getting ready

Create a new SwiftUI project and name it DisclosureGroups.

How to do it…

We will create an app that uses the DisclosureGroup view to view some planets in our solar system, continents on Earth, and some surprise text. The steps are as follows:

  1. Below the ContentView struct, add a state property called showplanets:
struct ContentView: View {
  @State private var showplanets = true
  // the rest of the content here
}
  1. In the ContentView struct, replace the content of the body variable with a VStack and a DisclosureGroup view that contains two Text views with planet names...
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