Contents

About the Authors

About the Technical Reviewer

Acknowledgments

Introduction

 Chapter 1: Application Recipes

Recipe 1-1: Setting Up a Single View Application

An Alternate Way

Recipe 1-2: Linking a Framework

Recipe 1-3: Adding a User Interface Control View

Recipe 1-4: Creating an Outlet

Recipe 1-5: Creating an Action

Recipe 1-6: Creating a Class

Recipe 1-7: Adding an Info.plist Property

Recipe 1-8: Adding a Resource File

Using the Asset Catalog

Recipe 1-9: Handling Errors

Setting Up a Framework for Error Handling

Notifying the User

Implementing Recovery Options

Recipe 1-10: Handling Exceptions

A Strategy for Handling Exceptions

Setting Up a Test Application

Intercepting Uncaught Exceptions

Reporting Errors

Adding the Button

Emailing the Report

A Final Touch

Recipe 1-11: Adding a Lite Version

Adding a Build Target

Coding for a Specific Version

Recipe 1-12: Adding Launch Images

Designing Launch Images

Launch Image Files

Summary

 Chapter 2: Storyboard Recipes

So, What’s in a Story (board)?

Scenes

Segues

Recipe 2-1: Implementing a Navigation Controller

Adding a New Scene to the Storyboard

Recipe 2-2: Implementing a UITableViewController

Adding a Detail View

Setting Up a Custom View Controller

Using Cell Prototypes

Recipe 2-3: Implementing a UITabBarController

Summary

 Chapter 3: Layout Recipes

Recipe 3-1: Using Auto Layout

Auto Layout Constraints

Constraint Priorities

Adding a Trailing Button

Recipe 3-2: Programming Auto Layout

Setting Up the Application

Visual Format Language

Adding Image Views

Defining the Image Views’ Constraints

Recipe 3-3: Debugging Auto Layout Code

Dealing with Ambiguous Layouts

Handling Unsatisfiability

Summary

 Chapter 4: Table and Collection View Recipes

Recipe 4-1: Creating an Ungrouped Table

Setting Up the Application

Adding a Model for Countries

Displaying Data in a Table View

Considerations for Cached Cells and Reuse

Configuring the Cells

Implementing the Accessory Views

Enhanced User Interaction

Considerations for Cell View Customization

Recipe 4-2: Editing a UITableView

UITableView Row Animations

But Wait, There’s More!

Recipe 4-3: Reordering a UITableView

Recipe 4-4: Creating a Grouped UITableView

Recipe 4-5: Registering a Custom Cell Class

Creating a Custom Table View Cell Class

Registering Your Cell Class

Recipe 4-6: Creating a Flag Picker Collection View

Setting Up the Application

Creating a Data Model

Building the Flag Picker

Defining the Collection View Interface

Displaying the Flag Picker

Using Auto Layout to Center the Headers

Summary

 Chapter 5: Location Recipes

About Core Location

Standard and Significant Change Services

Recipe 5-1: Getting Basic Location Information

Setting Up the Application

Starting and Stopping Location Updates

Receiving Location Updates

Testing Location Updates

Recipe 5-2: Significant Location Changes

Setting Up the Application

Enabling Background Updates

Adding Local Notifications

Recipe 5-3: Tracking Magnetic Bearing

About Heading Tracking

Setting Up the Application

Starting and Stopping Heading Updates

Implementing Delegate Methods

Recipe 5-4: Tracking True Bearing

Adding True Bearing

Recipe 5-5: Region Monitoring

A Thing or Two About Regions

Welcome to Denver!

Recipe 5-6: Implementing Geocoding

Implementing Reverse Geocoding

Implementing Forward Geocoding

Best Practices

Summary

 Chapter 6: Motion Recipes

Recipe 6-1: Recognizing Shake Events

Intercepting Shake Events

Subclassing the Window

Implementing Shake Notifications

Testing Shake Events

Recipe 6-2: Accessing Raw Core Motion Data

Core Motion Sensors

Setting Up the Project

Accessing Sensor Data

Pushing or Pulling

Selecting an Update Interval

The Nature of Raw Motion Data

Recipe 6-3: Accessing Device Motion Data

The Device Motion Class

Setting Up the Application

Accessing Device Motion Data

Setting a Reference Frame

Recipe 6-4: Moving a Label with Gravity

Setting Up the Application

Moving the Label with Gravity

Adding Acceleration

Summary

 Chapter 7: Map Recipes

Recipe 7-1: Showing a Map with the Current Location

Setting Up the Application

User-Controlled Tracking

Recipe 7-2: Marking Locations with Pins

Adding Annotation Objects

Changing the Pin Color

Recipe 7-3: Creating Custom Annotations

Setting Up the Application

Creating a Custom Annotation Class

Creating a Custom Annotation View

Customizing the Callouts

Adding a Detailed View

Recipe 7-4: Dragging a Pin

Adding a Draggable Pin

Recipe 7-5: Adding Overlays to a Map

Creating the Overlays

Recipe 7-6: Grouping Annotations Dynamically

A Forest of Pins

Implementing a Solution

Adding Color Coding

Recipe 7-7: Starting Maps from Your App

Adding Map Items

Launching in Directions Mode

Recipe 7-8: Registering a Routing App

Declaring a Routing App

Handling Launches

Testing the Routing App

Specifying a Coverage Area

Recipe 7-9: Getting Directions

Setting Up the Application

Drawing Directions on the Map

Adding ETA

Recipe 7-10: Using 3-D Mapping

Using the Properties Approach

Using the Convenience Method Approach

Creating a Fly-Over

Summary

 Chapter 8: Social Network Recipes

Recipe 8-1: Sharing Content with the Activity View

Setting Up an Activity View Controller

Excluding Activity View Items

Including Activity View Items

Recipe 8-2: Sharing Content Using a Compose View

Recipe 8-3: Sharing Content Using SLRequest

Setting Up the Main View

Requesting Access to Twitter Accounts

Handling Multiple Accounts

Recipe 8-4: Retrieving Tweets

Setting Up a Navigation-Based Application

Displaying Available Feeds

Displaying Tweets

Showing Individual Tweets

Summary

 Chapter 9: Camera Recipes

Recipe 9-1: Taking Pictures

Setting Up the User Interface

Accessing the Camera

Retrieving a Picture

Implementing Basic Editing

Saving Pictures to a Photos Album

Recipe 9-2: Recording Video

Recipe 9-3: Editing Videos

Recipe 9-4: Using Custom Camera Overlays

Recipe 9-5: Displaying Camera Preview with AVCaptureSession

Recipe 9-6: Capturing Still Images with AVCaptureSession

Adding a Capture Button

Recipe 9-7: Capturing Video with AVCaptureSession

Adding a Video Recording Mode

Recipe 9-8: Capturing Video Frames

Recipe 9-9: Capturing Machine-Readable Codes

Summary

 Chapter 10: Multimedia Recipes

Recipe 10-1: Playing Audio

Setting Up the Application

Setting Up the Audio Player

Handling Errors and Interruptions

Recipe 10-2: Recording Audio

Setting Up an Audio Recorder

Handling Interruptions

Recipe 10-3: Accessing the Music Library

Setting Up a Basic Music Player

Handling Notifications

Picking Media to Play

Querying Media

Recipe 10-4: Playing Background Audio

Setting Up the User Interface

Declaring Background Mode Playback

Implementing the Player

Summary

 Chapter 11: Image Recipes

Recipe 11-1: Using Image Views

Recipe 11-2: Scaling Images

Recipe 11-3: Manipulating Images with Filters

Combining Filters

Creating Thumbnail Images for the Table View

Recipe 11-4: Detecting Features

Summary

 Chapter 12: Graphics Recipes

Recipe 12-1: Drawing Simple Shapes

Refactoring a Bit

Recipe 12-2: Drawing Paths

Recipe 12-3: Adding Fonts and Drawing Text

Making Use of Available Fonts

Importing Your Own Fonts

Recipe 12-4: Adding Shadows

Recipe 12-5: Creating Gradients

Recipe 12-6: Clipping a Drawing to a Mask

Recipe 12-7: Programming Screen Shots

Summary

 Chapter 13: Animation and Physics Recipes

Recipe 13-1. View Animation Using UIKit

Changing Size and Transparency

Handling Rotation and Chaining Animation

Recipe 13-2. Implementing UIKit Dynamics

Using Gravity

Gravity and Collision

Using Item Properties

Adding Snap

Creating Push Behaviors

Spring and Attachment

Creating a Custom Behavior Class

Summary

 Chapter 14: User Data Recipes

Recipe 14-1. Working with NSCalendar and NSDate

Recipe 14-2. Fetching Calendar Events

Recipe 14-3. Displaying Events in a Table View

Recipe 14-4. Viewing, Editing, and Deleting Events

Recipe 14-5. Creating Calendar Events

Creating Recurring Events

Recipe 14-6. Creating Reminders

Setting Up the Application

Requesting Access to Reminders

Creating Time-Based Reminders

Creating Location-Based Reminders

Recipe 14-7. Accessing the Address Book

Recipe 14-8. Setting Contact Information

Summary

 Chapter 15: Data Storage Recipes

Recipe 15-1. Persisting Data with NSUserDefaults

Recipe 15-2. Persisting Data Using Files

Recipe 15-3. Using Core Data

Understanding Core Data

Setting Up Core Data

Designing the Data Model

Setting Up the Vocabularies Table View

Implementing the Words View Controller

Adding a Word Edit View

Persisting Data on iCloud

Recipe 15-4. Storing Key-Value Data in iCloud

Setting Up iCloud for an App

Persisting Data in an iCloud Key-Value Store

Caching iCloud Data Locally Using NSUserDefaults

Recipe 15-5. Storing UIDocuments in iCloud

Summary

 Chapter 16: Data Transmission Recipes

Recipe 16-1: Composing Text Messages

Recipe 16-2: Composing Email

Attaching Data to Mail

Recipe 16-3: Printing an Image

Recipe 16-4: Printing Plain Text

Recipe 16-5: Printing a View

Recipe 16-6: Formatted Printing with Page Renderers

Summary

 Chapter 17: Game Kit Recipes

Recipe 17-1. Making Your App Game Center Aware

Implementing the Game

Registering with iTunes Connect

Authenticating a Local Player

Displaying Game Center from Your App

Recipe 17-2. Implementing Leaderboards

Defining the Leaderboards

Reporting Scores to Game Center

Recipe 17-3. Implementing Achievements

Defining Achievements in iTunes Connect

Reporting the Achievements

Recipe 17-4. Creating a Simple Turn-Based Multiplayer Game

Building the Tic Tac Toe Game

Preparing the Game for Game Center

Implementing Matchmaking

Encoding and Decoding Match Data

Handling Turn-Based Events

Summary

Index