Book Image

iOS 14 Programming for Beginners - Fifth Edition

By : Ahmad Sahar
Book Image

iOS 14 Programming for Beginners - Fifth Edition

By: Ahmad Sahar

Overview of this book

If you're looking to work and experiment with powerful iOS 14 features such as widgets and App Clips to create your own apps, this iOS programming guide is for you. The book offers a comprehensive introduction for experienced programmers who are new to iOS, taking you through the entire process of learning the Swift language, writing your own apps, and publishing them on the App Store. Fully updated to cover the new iOS 14 features, along with Xcode 12 and Swift 5.3, this fifth edition of iOS 14 Programming for Beginners starts with an introduction to the Swift programming language and shows you how to accomplish common programming tasks with it. You'll then start building the user interface (UI) of a complete real-world app using the storyboards feature in the latest version of Xcode and implement the code for views, view controllers, data managers, and other aspects of mobile apps. The book will also help you apply iOS 14 features to existing apps and introduce you to SwiftUI, a new way to build apps for all Apple devices. Finally, you’ll set up testers for your app and understand what you need to do to publish your app on the App Store. By the end of this book, you'll not only be well versed in writing and publishing applications, but you’ll also be able to apply your iOS development skills to enhance existing apps.
Table of Contents (31 chapters)
1
Section 1: Swift
10
Section 2:Design
15
Section 3:Code
24
Section 4:Features

Creating the Restaurant List screen

When using storyboards, you modify attributes of a view using the Attributes inspector. In SwiftUI, you can modify either your code or the preview on the canvas. As you have seen, changing the code in the ContentView.swift file will immediately update the preview, and modifying the preview will update the code.

Let's customize the ContentView structure to display the data of a particular restaurant. Follow these steps:

  1. Click the Library button. Type tex in the filter field, then drag a Text view to the canvas and drop it under the Lets Eat text:

    Figure 23.9 – Library with the Text object to be dragged

  2. Xcode has automatically added code to the ContentView.swift file for this text view. Verify that your code looks like this:
    struct ContentView: View {
        var body: some View { 
            VStack{
                ...