Book Image

SwiftUI Cookbook - Second Edition

By : Giordano Scalzo, Edgar Nzokwe
Book Image

SwiftUI Cookbook - Second Edition

By: Giordano Scalzo, Edgar 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)

Presenting confirmation dialogs

The SwiftUI confirmation dialogs and alerts are both used to request additional information from the user by interrupting the normal flow of the app to display a message. Confirmation dialogs give the user some additional choices related to an action that they are currently taking, whereas the Alerts view informs the user if something unexpected happens or they are about to perform an irreversible action.

Confirmation dialogs were introduced in iOS 15. The similar but deprecated functionality in iOS 13 and 14 is called Actionsheet. The implementation for Actionsheet is located in the oldActionSheets.swift file.

In this recipe, we will create a confirmation dialog that gets displayed when the user taps some text in the view.

Getting ready

Create a new SwiftUI project called PresentingConfirmationDialogs.

How to do it

We will implement an action sheet by adding a .confirmationDialog() modifier to a view as well as a trigger that changes...