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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 multiple animations to a view

SwiftUI allows us to animate multiple features at the same time, and also, they can be animated using different durations and different animation curves.

In this recipe, we'll learn how to animate two sets of features, and how to make the result look like one single, smooth animation.

Getting ready

Let's create a SwiftUI project called MultipleAnimationsApp.

How to do it…

To illustrate how you can apply multiple animations to a view, we are going to create a rectangle that has two sets of animations:

  • One set with the color, the vertical offset, and the rotation around the X axis
  • One set with the scale, and a rotation around the Z axis

We are using a .easeInOut curve for the former, and .linear for the latter:

  1. Let's start by adding the rectangle and the button to trigger the change:
    struct ContentView: View {
        @State
        var initialState =...
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