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)

Implementing a distributed Notes app with Firebase and SwiftUI

One of the strongest features of Firebase is its distributed database capabilities. Since its first release, the possibility of having a distributed database in the cloud gave mobile developers a simple way of handling secure persistent storage in the cloud.

Firebase offers two type of databases:

Realtime Database, which is the original one, and Cloud Firestore, which is a new and more powerful implementation.

For this recipe we are going to use Cloud Firestore.

It not only allows apps to save data in the repository, but it also sends events when it is updated by another client, permitting your app to react to these changes in a seamless way. This asynchronous feature works very well with SwiftUI.

In this recipe, we are going to implement a simplified version of the default Notes app where we can save our notes in a Firestore collection, without being concerned of explicitly saving the notes or handling offline...