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 ASAP e-commerce store


In this section, we'll implement the product, wrapping the connection with the server with a protocol so that we can implement the app using a fake local storage for this information.

The e-commerce product list

The list of the products stating the requirements for the app is simple: a grid with two columns is required, which we can implement using UICollectionView.

First of all, let's change the controller in the Storyboard from a simple UIViewController to UICollectionviewController, embed it into UINavigationController, add a UICollectionViewCell prototype, and change the parent class accordingly in the Swift file.

Although we are going to set up the collection using a custom flow, we'll set the size of the cell to be a little bigger in order to help us lay out the components:

import UIKit

class EcommerceViewController: UICollectionViewController {

    static func instantiate() -> UIViewController {
        return UIStoryboard(name: "Ecommerce", bundle: nil)...