Contents

About the Authors

About the Technical Reviewer

Acknowledgments

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

Exercises

 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 7

Using Xcode 7

Xcode Playground IDE: Editor and Results Areas

Summary

Exercise

 Chapter 3: It’s All About the Data

Numbering Systems Used in Programming

Bits

Bytes

Hexadecimal

Unicode

Data Types

Declaring Constants and Variables

Optionals

Using Variables in Playgrounds

Summary

Exercises

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

Boolean Logic

Truth Tables

Comparison Operators

Designing Apps

Pseudocode

Optionals and Forced Unwrapping

Flowcharting

Designing and Flowcharting an Example App

The App’s Design

Using Loops to Repeat Program Statements

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

Exercises

 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

Summary

Exercises

 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

Exercises

 Chapter 7: Swift Classes, Objects, and Methods

Creating a Swift Class

Instance Variables

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 Class Methods to the Next Level

Accessing the Xcode Documentation

Summary

Exercises

 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 Variables

Finishing the BookStore Program

Creating the View

Adding Properties

Adding a Description

Creating a Simple Data Model Class

Modifying MasterViewController

Modifying the DetailViewController

Summary

Exercises

 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

Exercises

 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 Library

Inspector Pane and Selector Bar

Creating the View

Using Outlets

Using Actions

The Class

Summary

Exercises

 Chapter 11: Storing Information

Storage Considerations

Preferences

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

Exercises

 Chapter 12: Protocols and Delegates

Multiple Inheritance

Understanding Protocols

Protocol Syntax

Delegation

Protocol and Delegation Example

Getting Started

How It Works

Summary

Exercise

 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

App Summary

Exercises

 Chapter 15: Apple Watch and watchKit

Considerations When Creating a watchOS App

Creating an Apple Watch App

Adding More Functionality

Summary

Exercises

 Chapter 16: A Swift HealthKit iPhone App

Introduction to Core Bluetooth

Central and Peripheral Devices

Peripheral Advertising

Peripheral Data Structure

Let’s Get Started and Build the App

App Summary

What’s Next?

Exercises

Index