Book Image

Learn Swift by Building Applications

By : Emil Atanasov, Giordano Scalzo, Emil Atanasov
Book Image

Learn Swift by Building Applications

By: Emil Atanasov, Giordano Scalzo, Emil Atanasov

Overview of this book

Swift Language is now more powerful than ever; it has introduced new ways to solve old problems and has gone on to become one of the fastest growing popular languages. It is now a de-facto choice for iOS developers and it powers most of the newly released and popular apps. This practical guide will help you to begin your journey with Swift programming through learning how to build iOS apps. You will learn all about basic variables, if clauses, functions, loops, and other core concepts; then structures, classes, and inheritance will be discussed. Next, you’ll dive into developing a weather app that consumes data from the internet and presents information to the user. The final project is more complex, involving creating an Instagram like app that integrates different external libraries. The app also uses CocoaPods as its package dependency manager, to give you a cutting-edge tool to add to your skillset. By the end of the book, you will have learned how to model real-world apps in Swift.

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Table of Contents (14 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Get in touch
Free Chapter
1
Swift Basics – Variables and Functions
Swift Basics – Variables and Functions
Variables
Enumeration types
Basic flow statements
Functions
Summary
2
Getting Familiar with Xcode and Playgrounds
Getting Familiar with Xcode and Playgrounds
Installing Xcode
Exploring Xcode
Playground
Summary
3
Creating a Minimal Mobile App
Creating a Minimal Mobile App
Your first iOS application
Summary
4
Structures, Classes, and Inheritance
Structures, Classes, and Inheritance
Structures and classes
Inheritance
Summary
5
Adding Interactivity to Your First App
Adding Interactivity to Your First App
Storyboards
Summary
6
How to Use Data Structures, OOP, and Protocols
How to Use Data Structures, OOP, and Protocols
Primary collection types
List of items in a playground
Table view in iOS app
Protocols
Summary
7
Developing a Simple Weather App
Developing a Simple Weather App
Defining the app screens
Model
Summary
8
Introducing CocoaPods and Project Dependencies
Introducing CocoaPods and Project Dependencies
Software – the modern way
Carthage
Swift Package Manager
Popular third-party libraries
Summary
9
Improving a Version of a Weather App
Improving a Version of a Weather App
Weather forecast API
Pure network requests
Summary
10
Building an Instagram-Like App
Building an Instagram-Like App
Tabbed app project
Firebase
Summary
11
Instagram-Like App Continued
Instagram-Like App Continued
Home screen
Profile screen
Search screen
Favorites screen
Polishing the home screen
Summary
12
Contributing to an Open Source Project
Contributing to an Open Source Project
Your account at GitHub
Forking a repository
Let's contribute
Pull request
Summary
13
Other Books You May Enjoy
Other Books You May Enjoy
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Installing Xcode

First, Xcode runs on macOS only. This means you have to find a macOS-compatible computer that is running macOS 10.13 or later.

It is possible to have macOS running on a virtual machine, but having a hardware one is better.

We will install Xcode version 9.3. This is the latest version available in the App Store at the moment, but it may change in the near future, so no worries if you install a slightly newer version. The IDE looks the same way.

Start your computer and open the App Store application. This application is used to download extra software on to your macOS. You can find its icon on the dock, as shown here:

Once you've clicked the icon, you should see the App Store application displayed. At the top-right corner, there is a search field. Select it and start typing Xcode. You will see many suggestions as shown in the following screenshot:

Select...

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