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)

Embedding a UIKit MapView in SwiftUI

One of the reasons for the success of smartphones is the possibility of showing the current position on a map in real time, preventing users from getting lost in an unknown part of a city.

Since the its release, the iPhone has provided a fantastic map experience thanks to MapKit, the framework implemented by Apple that, from iOS 6, replaces the Google Maps SDK.

In the preceding recipe, Embedding a MapView in SwiftUI, we saw how simple it is to show a Map SwiftUI component.

However, the SwiftUI native Map component is available from iOS 14 only. Since not all iOS apps can be updated to support only the latest version of iOS, because most customers are still on iOS 13, in this recipe, we'll see how to wrap the UIKit MKMapView component in UIViewRepresentable and use it in a SwiftUI app.

We'll implement the same app as we did in Embedding a MapView in SwiftUI, where we create a list of favorite places.

Getting ready

Let...