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)
Section 1: Swift
Section 2:Design
Section 3:Code
Section 4:Features

Configuring storyboard element sizes

The Size inspector is used to change the size of storyboard elements. You will use it to change the size of the collection view cell and collection view section header to make them match the Explore screen that was shown in the app tour in Chapter 9, Setting Up the Basic Structure. Follow these steps:

  1. Click Main.storyboard in the Project navigator and click Collection View in the document outline. Click the Size inspector button:

    Figure 10.32 – Size inspector selected

  2. The collection view size settings will be displayed in the Size inspector as shown:

Figure 10.33 – Size inspector showing size settings for the collection view

Configure the collection view size settings, as follows:

Cell Size: Set Width to 177 and Height to 177.

Estimate Size: None.

Header Size: Set Width to 0 and Height to 100.

Min Spacing: Set For Cells to 0 and For Lines to 7.

Section Insets: Set Top, Bottom,...