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)
5
Adding Interactivity to Your First App

Defining the app screens

Usually, a Weather app displays the weather forecast for a week for a particular location. We will develop a version that works for a single city and later, we will expand it to fetch data from the internet. For that reason, here are the screens that we will develop in this chapter:

  • The loading screen: Every app has a starting screen, which is displayed while the app is loading. By default, every project comes with a separate storyboard, where this can be defined. We will use something pretty plain here and will allow further customization once we want to make our app a bit slicker.
  • Main forecast screen: This scene will be our entry point. It will display the forecast for a particular place. Once we support many locations, this screen should provide easy navigation to the other locations. For example, the default weather app that comes with iOS allows...