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.
Table of Contents (14 chapters)
Adding Interactivity to Your First App

Exploring Xcode

The Xcode application is installed and it is running. You will see the following start screen:

On the right, you will see No Recent Projects, but this just shows a list of the last few projects you have worked on. On the left, you will see the version of Xcode 9.3 and a few shortcuts. We will start with the first one to get familiar with the playground. Go and click Get started with a playground. A new window is displayed, as shown in the following screenshot. Don't panic; this is the window in which you have to select the template for your playground project. For now, we will stick to iOS:

When you click Next, you have to enter the name of the playground. Let's start with Swift 4 by examples. We can change the platform if we want to explore the different features of other platforms. Xcode has a really powerful simulator which can simulate different...