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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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Concepts
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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

Scrolling programmatically

In iOS 17, ScrollView received a series of improvements. One of these is the scrollPosition(id:) modifier, which associates a binding to be updated when the scroll view scrolls. The binding allows us to read the ID of the topmost or leading-most view shown in the scroll view at any given moment. We can also set the binding to the ID of our choice and the scroll view will scroll programmatically to show the chosen view. If we are targeting previous versions of iOS, we must use ScrollViewReader to read the scroll position and to scroll programmatically. ScrollViewReader allows us to programmatically scroll to a different view in the scroll view, even if the view is not currently visible on the screen. For example, ScrollViewReader could be used to programmatically scroll to a newly added item, scroll to the most recently changed item, or scroll based on a custom trigger.In this recipe, to showcase how to scroll programmatically, we will create an app that displays...

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