Book Image

Learn SwiftUI

By : Chris Barker
Book Image

Learn SwiftUI

By: Chris Barker

Overview of this book

SwiftUI is the new and powerful interface toolkit that lets you design and build iOS, iPadOS, and macOS apps using declarative syntax. It is a powerful way to develop the UI elements of applications, which would normally be tightly coupled to application logic. Learn SwiftUI will get you up to speed with the framework and cross-device UI development in no time. Complete with detailed explanations and practical examples, this easy-to-follow guide will teach you the fundamentals of the SwiftUI toolkit. You'll learn how to build a powerful iOS and iPadOS application that can be reused for deployment on watchOS. As you progress, you'll delve into UI and unit testing in iOS apps, along with learning how to test your SwiftUI code for multiple devices. The book will also show you how to integrate SwiftUI features such as data binding and network requests into your current application logic. By the end of this book, you will have learned how to build a cross-device application using the SwiftUI framework and Swift programming.
Table of Contents (17 chapters)

Data Binding versus Data Source

Data Sources can play a massive part in building and even (programmatically) designing a UITableView. In this section, we'll look at how to best perceive a UITableViewDataSource in a way that makes understanding why it works the way it does much clearer.

Then, we'll take a look at a comparison of how we achieve the same thing in SwiftUI.

UIKit – multiple Data Sources

First of all, we must ask the question, why would we want multiple UITableViewDataSource? One of the many reasons is simply its reusability.

As we saw in the previous section, we have to conform to the UITableViewDataSource delegate and override multiple functions, just in order to get our table to load some data...