Book Image

SwiftUI Essentials – iOS 14 Edition

By : Neil Smyth
Book Image

SwiftUI Essentials – iOS 14 Edition

By: Neil Smyth

Overview of this book

Do you want to create iOS apps with SwiftUI, Xcode 12, and Swift 5.3, and want to publish it on the app store? This book helps you achieve these skills with a step-by-step approach. This course first walks you through the steps necessary to set up an iOS development environment together and introduces Swift Playgrounds to learn and experiment with Swift—specifically, the Swift 5.3 programming language. After establishing key concepts of SwiftUI and project architecture, this course provides a guided tour of Xcode in SwiftUI development mode. The book also covers the creation of custom SwiftUI views and explains how these views are combined to create user interface layouts, including the use of stacks, frames, and forms. One of the more important skills you’ll learn is how to integrate SwiftUI views into existing UIKit-based projects and explain the integration of UIKit code into SwiftUI. Finally, the book explains how to package up a completed app and upload it to the app store for publication. Along the way, the topics covered in the book are put into practice through detailed tutorials, the source code for which is also available for download. By the end of this course, you will be able to build your own apps for iOS 14 using SwiftUI and publish it on the app store. The code files for the book can be found here: https://www.ebookfrenzy.com/retail/swiftui-ios14/
Table of Contents (56 chapters)
56
Index

48.8 Designing the Widget View

Now that the widget entry has been created and used as the basis for some sample timeline data, the widget view needs to be designed. When the widget extension was added to the project, a template widget entry view was included in the WeatherWidget.swift file which reads as follows:

struct WeatherWidgetEntryView : View {

    var entry: Provider.Entry

 

    var body: some View {

        Text(entry.date, style: .time)

    }

}

As currently implemented, the view is passed a widget entry from which the date value is extracted and displayed on a Text view.

Modify the view structure so that it reads as follows, keeping in mind that it will result in syntax errors appearing in the editor. These will be resolved later in the tutorial:

struct WeatherWidgetView: View {

    var entry: Provider.Entry

 ...