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)

Chapter 6: Presenting Extra Information to the User

When interacting with mobile applications, users require a certain level of handholding. For example, suppose they are about to perform an irreversible action such as permanently deleting a file. In that case, they should probably be shown an alert asking for confirmation if they want to proceed with the action. Then, depending on the user's response, the file would be deleted or left alone.

Since SwiftUI is a declarative programming language, presenting extra information to the user mainly involves adding modifiers to already existing views. It is possible to add one or several such modifiers to a View and set the conditions for each trigger. In this chapter, we will learn how to present extra information to the user using alerts, modals, context menus, and popovers.

The recipes we'll cover in this chapter are as follows:

  • Presenting alerts
  • Adding actions to alert buttons
  • Presenting confirmation dialogs...