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  • Book Overview & Buying SwiftUI Cookbook
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SwiftUI Cookbook

SwiftUI Cookbook - Second Edition

By : Giordano Scalzo, Nzokwe
4.3 (20)
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SwiftUI Cookbook

SwiftUI Cookbook

4.3 (20)
By: Giordano Scalzo, Nzokwe

Overview of this book

SwiftUI provides an innovative and simple way to build beautiful user interfaces (UIs) for all Apple platforms, from iOS and macOS through to watchOS and tvOS, using the Swift programming language. In this recipe-based cookbook, you’ll cover the foundations of SwiftUI as well as the new SwiftUI 3 features introduced in iOS 15 and explore a range of essential techniques and concepts that will help you through the development process. The cookbook begins by explaining how to use basic SwiftUI components. Once you’ve learned the core concepts of UI development, such as Views, Controls, Lists, and ScrollViews, using practical implementations in Swift, you'll advance to adding useful features to SwiftUI using drawings, built-in shapes, animations, and transitions. 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 by 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 encountered when building SwiftUI apps.
Table of Contents (17 chapters)
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Scrolling programmatically with ScrollViewReader

ScrollViewReader allows you to programmatically scroll to a different index in a list that might or might not be 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, we will create an app that displays a list of characters from A to Q. A button at the top of the screen will programmatically scroll from the top to the end of the list when clicked. Another button at the bottom of the screen will allow us to scroll back up from the bottom to the middle of the list.

Getting ready

Create a new SwiftUI project named ScrollViewReaders.

How to do it…

We'll start by creating an Identifiable struct that has two properties: a name and an id.

Then, we'll use this struct to create an array of SF Symbols to be displayed on the screen. Finally, we...

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SwiftUI Cookbook
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