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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 FREE CHAPTER 2. Displaying Scrollable Content with Lists and Scroll Views 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

Adding rows to a list

The most common actions users might want to be able to perform on a list include adding, editing, and deleting items.

In this recipe, we’ll go over the process of implementing those actions on a SwiftUI list.

Getting ready

Create a new SwiftUI project and call it ListRowAdd.

How to do it…

Let’s create a list with a button at the top that can be used to add new rows to the list. The steps are as follows:

  1. Create a state variable in the ContentView struct that holds an array of numbers:
    @State var numbers = [1,2,3,4]
    
  2. Replace the content of the body property of the ContentView struct with a NavigationStack containing a List view:
    NavigationStack {
       List{
           ForEach(self.numbers, id:\.self){
              number in
              Text("\(number)")
           }
       }
    }
    
  3. Add a .navigationTitle and a navigationBarTitleDisplayMode modifier to the list with a title and an...
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