Swift 4 for Absolute Beginners: Develop Apps for iOS. 4 Ed

 Contents

About the Authors

About the Technical Reviewer

Introduction

Chapter 1: Becoming a Great iOS Developer

Thinking Like a Developer

Completing the Development Cycle

Introducing Object-Oriented Programming

Working with the Playground Interface

Summary

What’s Next

Chapter 2: Programming Basics

Touring Xcode

Exploring the Workspace Window

Navigating Your Workspace

Editing Your Project Files

Creating Your First Swift Playground Program

Installing and Launching Xcode 9

Using Xcode 9

Xcode Playground IDE: Editor and Results Areas

Summary

Chapter 3: It’s All About the Data

Numbering Systems Used in Programming

Bits

Moore’s Law

Bytes

Hexadecimal

Unicode

Data Types

Declaring Constants and Variables

Optionals

Using Variables in Playgrounds

Summary

Chapter 4: Making Decisions, Program Flow, and App Design

Boolean Logic

Truth Tables

Comparison Operators

Designing Apps

Pseudocode

Optionals and Forced Unwrapping

Optional Binding

Implicitly Unwrapped Optionals

Flowcharting

Designing and Flowcharting an Example App

The App’s Design

Using Loops to Repeat Program Statements

Count-Controlled Loops

Condition-Controlled Loops

Infinite Loops

Coding the Example App in Swift

Nested if Statements and else if Statements

Removing Extra Characters

Improving the Code Through Refactoring

Running the App

Design Requirements

Summary

Chapter 5: Object-Oriented Programming with Swift

The Object

What Is a Class?

Planning Classes

Planning Properties

Planning Methods

Implementing the Classes

Inheritance

Why Use OOP?

OOP Is Everywhere

Eliminate Redundant Code

Ease of Debugging

Ease of Replacement

Advanced Topics

Interface

Polymorphism

Value Orientated Programming

Summary

Chapter 6: Learning Swift and Xcode

A Newcomer

Understanding the Language Symbols

Implementing Objects in Swift

Writing Another Program in Xcode

Creating the Project

Summary

Chapter 7: Swift Classes, Objects, and Methods

Creating a Swift Class

Properties

Methods

Using Type Methods

Using Instance Methods

Using Your New Class

Creating Your Project

Adding Objects

Writing the Class

Creating the User Interface

Hooking Up the Code

Running the Program

Taking Type Methods to the Next Level

Accessing the Xcode Documentation

Summary

Chapter 8: Programming Basics in Swift

Using let vs. var

Understanding Collections

Using Arrays

Using the Dictionary Class

Creating the BookStore Application

Creating Your Class

Introducing Properties

Accessing Properties

Finishing the BookStore Program

Creating the View

Adding Properties

Adding a Description

Creating a Simple Data Model Class

Modifying MasterViewController

Modifying the DetailViewController

Summary

Chapter 9: Comparing Data

Revisiting Boolean Logic

Using Relational Operators

Comparing Numbers

Creating an Example Xcode App

Using Boolean Expressions

Comparing Strings

Using the switch Statement

Comparing Dates

Combining Comparisons

Summary

Chapter 10: Creating User Interfaces

Understanding Interface Builder

The Model-View-Controller Pattern

Human Interface Guidelines

Creating an Example iPhone App with Interface Builder

Using Interface Builder

The Document Outline

The Object Library

Inspector Pane and Selector Bar

Creating the View

Using Outlets

Using Actions

The Class

Summary

Chapter 11: Storing Information

Storage Considerations

Preferences/UserDefaults

Writing Preferences

Reading Preferences

Databases

Storing Information in a Database

Getting Started with Core Data

The Model

Managed Object Context

Setting Up the Interface

Summary

Chapter 12: Protocols and Delegates

Multiple Inheritance

Understanding Protocols

Protocol Syntax

Delegation

Protocol and Delegation Example

Getting Started

How It Works

Summary

Chapter 13: Introducing the Xcode Debugger

Getting Started with Debugging

Setting Breakpoints

Using the Breakpoint Navigator

Debugging Basics

Working with the Debugger Controls

Using the Step Controls

Looking at the Thread Window and Call Stack

Debugging Variables

Dealing with Code Errors and Warnings

Errors

Warnings

Summary

Chapter 14: A Swift iPhone App

Let’s Get Started

Switches

Alert Controllers

App Summary

Chapter 15: Apple Watch and WatchKit

Considerations When Creating a watchOS App

Creating an Apple Watch App

Adding More Functionality

Summary

Index

Index

Stay motivated and overcome obstacles while learning to use Swift Playgrounds to be a great iOS developer. This book is perfect for those with no programming background, those with some programming experience but no object-oriented experience, or those that have a great idea for an app but haven’t programmed since school, and it is now updated for Swift 4.

Many people have a difficult time believing they can learn to write iOS apps. Swift 4 for Absolute Beginners will show you how to do so. You'll learn Object Oriented Programming and be introduced to HealthKit before moving on to write your own iPhone and Watch apps from scratch.

Gary Bennett and Brad Lees are full-time professional iOS developers and have developed a broad spectrum of apps for Fortune 500 companies. The authors have taken their combined 14 years of writing apps, teaching online iOS courses, the experience from their first three iOS books, along with their online instruction and free online forum at XcelMe.com to create an excellent training book. And the material in this book is supplemented by with the free, live online training sessions.

What You’ll Learn

• Work with Swift classes, properties, and functions
• Examine proper user interface and user experience design
• Understand Swift data types: integers, floats, strings, and Booleans
• Use Swift data collections: arrays and dictionaries
• Review Boolean logic, comparing data, and flow control

Who This Book Is For

Anyone who wants to learn to develop apps for the Mac, iPhone, and iPad, and Watch using the Swift programming language. No previous programming experience is necessary.