Book Image

iOS 15 Programming for Beginners - Sixth Edition

By : Ahmad Sahar, Craig Clayton
5 (1)
Book Image

iOS 15 Programming for Beginners - Sixth Edition

5 (1)
By: Ahmad Sahar, Craig Clayton

Overview of this book

With almost 2 million apps on the App Store, iOS mobile apps continue to be incredibly popular. Anyone can reach millions of customers around the world by publishing their apps on the App Store. iOS 15 Programming for Beginners is a comprehensive introduction for those who are new to iOS. It covers the entire process of learning the Swift language, writing your own app, and publishing it on the App Store. Complete with hands-on tutorials, projects, and self-assessment questions, this easy-to-follow guide will help you get well-versed with the Swift language to build your apps and introduce exciting new technologies that you can incorporate into your apps. You'll learn how to publish iOS apps and work with Mac Catalyst, SharePlay, SwiftUI, Swift concurrency, and much more. By the end of this iOS development book, you'll have the knowledge and skills to write and publish interesting apps, and more importantly, to use the online resources available to enhance your app development journey.
Table of Contents (32 chapters)
1
Part 1: Swift
10
Part 2: Design
15
Part 3: Code
25
Part 4: Features

Understanding Swift playgrounds

Playgrounds are interactive coding environments. You type code in the left-hand pane, and the results are displayed immediately in the right-hand pane. It's a great way to experiment with code and to explore system APIs.

Important Information

API is an acronym for Application Programming Interface. To learn more, visit this link: https://en.wikipedia.org/wiki/API.

Let's start by creating a new playground and examining its user interface. Follow these steps:

  1. To create a playground, launch Xcode and choose File | New | Playground... from the Xcode menu bar:

Figure 2.1: Xcode menu bar with File | New | Playground... selected

  1. The template screen appears. iOS should already be selected. Choose Blank and click Next:

Figure 2.2: Choose a template for your new playground: screen

  1. Name your playground SimpleValues and save it anywhere you like. Click Create when done...