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SwiftUI Cookbook

SwiftUI Cookbook

By : Giordano Scalzo, Nzokwe
4.8 (10)
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SwiftUI Cookbook

SwiftUI Cookbook

4.8 (10)
By: Giordano Scalzo, Nzokwe

Overview of this book

SwiftUI is an innovative and simple way to build beautiful user interfaces (UIs) for all Apple platforms, right from iOS and macOS through to watchOS and tvOS, using the Swift programming language. In this recipe-based book, you’ll work with SwiftUI and explore a range of essential techniques and concepts that will help you through the development process. The recipes cover the foundations of SwiftUI as well as the new SwiftUI 2.0 features introduced in iOS 14. Other recipes will help you to make some of the new SwiftUI 2.0 components backward-compatible with iOS 13, such as the Map View or the Sign in with Apple View. The cookbook begins by explaining how to use basic SwiftUI components. Then, you’ll learn the core concepts of UI development such as Views, Controls, Lists, and ScrollViews using practical implementation in Swift. By learning drawings, built-in shapes, and adding animations and transitions, you’ll discover how to add useful features to the SwiftUI. When you’re ready, 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 while 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 found in building SwiftUI apps.
Table of Contents (15 chapters)
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Applying a delay to a view modifier animation to create a sequence of animations

In the current version of SwiftUI, there is no way of joining different animations together to create a sequence of animations.

This will surely be fixed in a later SwiftUI version, but at the moment, we can implement a sequence of animations using a delay.

As you should know, there are two ways of defining an animation:

  • Using the .animation() view modifier
  • Using the withAnimation function

In this recipe, we'll see how to use the.animation() view modifier, and we'll cover the withAnimation function in the next recipe, Applying a delay to a withAnimation function to create a sequence of animations.

Getting ready

Let's create a SwiftUI project in Xcode called DelayedAnimationsApp.

How to do it…

In our app, we will create a sequence of three animations on a rectangle:

  • A change of the vertical offset
  • A change of scale
  • A 3D rotation...

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