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


A storyboard is a central place where all screens can be designed. It's not mandatory to use a storyboard to create a working iOS app, but with storyboards you can save a lot of time when defining a native UI. This is the official way of developing a UI in Apple's ecosystem of iOS, macOS, watchOS, and tvOS.

The storyboard editor is a special view of Xcode. It presents a visual editor for your application. Let's get back to our first empty app which has a single view. Do you remember that we had seen in the navigator that there is a special file named .storyboard? This is where we will start from and this is what your app renders initially:

Initial screen of your app

This screen is the initial screen of your app. The UI components which you can add can be found at the bottom-right of the Properties panel. Simply, drag and drop items on the canvas and...