Book Image

Swift 2 By Example

By : Giordano Scalzo
Book Image

Swift 2 By Example

By: Giordano Scalzo

Overview of this book

Swift is no longer the unripe language it was when launched by Apple at WWDC14, now it’s a powerful and ready-for-production programming language that has empowered most new released apps. Swift is a user-friendly language with a smooth learning curve; it is safe, robust, and really flexible. Swift 2 is more powerful than ever; it introduces new ways to solve old problems, more robust error handling, and a new programming paradigm that favours composition over inheritance. Swift 2 by Example is a fast-paced, practical guide to help you learn how to develop iOS apps using Swift. Through the development of seven different iOS apps and one server app, you’ll find out how to use either the right feature of the language or the right tool to solve a given problem. We begin by introducing you to the latest features of Swift 2, further kick-starting your app development journey by building a guessing game app, followed by a memory game. It doesn’t end there, with a few more apps in store for you: a to-do list, a beautiful weather app, two games: Flappy Swift and Cube Runner, and finally an ecommerce app to top everything off. By the end of the book, you’ll be able to build well-designed apps, effectively use AutoLayout, develop videogames, and build server apps.
Table of Contents (18 chapters)
Swift 2 By Example
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Free Chapter
1
Welcome to the World of Swift
2
Building a Guess the Number App
Index

The skeleton app and register screen


Let's start the implementation of the app and let's begin with the Register screen.

The skeleton app

As usual, we create a new Single View application app, called ASAP, which, for the sake of simplicity, will be a portrait-only app:

  1. Let's create a Register group where we'll add a RegisterViewController class and a Storyboard called Register.storyboard.

  2. Add a UIViewController class to the scene, and define it as the RegisterViewController class:

  3. To keep the instantiation simple, set it as the initial View Controller in the Storyboard:

  4. Moving to the class, we define a factory method to instantiate RegisterViewController:

    import UIKit
    
    class RegisterViewController: UIViewController {
    
        static func instantiate() -> RegisterViewController {
            return UIStoryboard(name: "Register", bundle: nil).instantiateInitialViewController() as! RegisterViewController
        }
    }

This is a convenient way to set all the required information in order to create View Controller...