Book Image

SwiftUI Cookbook

By : Giordano Scalzo, Edgar Nzokwe
Book Image

SwiftUI Cookbook

By: Giordano Scalzo, Edgar 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)

Filling a border with an image

We know that filling a border with color is pretty easy, but what about an image?

It turns out that, like gradients in the Rendering a border with a gradient recipe, using an image for styling a stroke is straightforward.

Getting ready

We are going to use an image to fill the border, and you can either use JesterBackground, provided for you in the GitHub repo in the Resources folder (https://github.com/PacktPublishing/SwiftUI-Cookbook/blob/master/Resources/Chapter06/recipe10/JesterBackground.png), or add one of your choice.

Create a SwiftUI project called ImageBorderApp and add the image to the Assets folder.

How to do it...

In this recipe, we are going to render a simple Circle and add an image in the strokeBorder() modifier:

  1. Let's add Circle inside the body of the ContentView struct and make it central on the screen with some padding:
    struct ContentView: View {
        var body: some View {
      ...