The Advanced iOS 6 Developer’s Cookbook brings together reliable, proven solutions for cutting-edge iOS 6 development. World-renowned iOS expert Erica Sadun covers device-specific development, document/data sharing, Core Text, networking, image processing, onboard cameras, audio, Address Book, Core Location, GameKit,StoreKit, push notifications, and more.
As in her previous bestselling iOS books, Sadun translates today’s development best practices into working code, distilling key concepts into concise recipes that are easy to understand and transfer into an indeviduals projects. This isn’t just cut and paste. Using her examples, Sadun fully explains both the “how” and “why” of advanced and specialized iOS 6 development.
All code is tested with iOS 6 features and iPhone, iPad, and iPod touch capabilities. Throughout, every chapter groups related tasks together, so students can jump straight to their solution without having to identify the right class or framework first.
Table of Contents:
Preface xiii
1 Device-Specific Development 1
Accessing Basic Device Information 1
Adding Device Capability Restrictions 2
Recipe: Checking Device Proximity and Battery States 5
Recipe: Recovering Additional Device Information 9
Recipe: Using Acceleration to Locate “Up” 11
Working with Basic Orientation 12
Retrieving the Current Accelerometer Angle Synchronously 13
Recipe: Using Acceleration to Move Onscreen Objects 16
Recipe: Accelerometer-Based Scroll View 19
Recipe: Core Motion Basics 21
Recipe: Retrieving and Using Device Attitude 26
Detecting Shakes Using Motion Events 27
Recipe: Using External Screens 29
Tracking Users 35
One More Thing: Checking for Available Disk Space 35
Summary 36
2 Documents and Data Sharing 39
Recipe: Working with Uniform Type Identifiers 39
Recipe: Accessing the System Pasteboard 45
Recipe: Monitoring the Documents Folder 48
Recipe: Presenting the Activity View Controller 54
Recipe: The Quick Look Preview Controller 63
Recipe: Adding a QuickLook Action 66
Recipe: Using The Document Interaction Controller 69
Recipe: Declaring Document Support 75
Recipe: Creating URL-Based Services 82
Summary 84
3 Core Text 87
Core Text and iOS 87
Attributed Strings 89
Recipe: Basic Attributed Strings 93
Recipe: Mutable Attributed Strings 95
The Mystery of Responder Styles 98
Recipe: Attribute Stacks 100
Recipe: Using Pseudo-HTML to Create Attributed Text 105
Drawing with Core Text 109
Creating Image Cut-Outs 112
Recipe: Drawing Core Text onto a Scroll View 114
Recipe: Exploring Fonts 116
Adding Custom Fonts to Your App 118
Recipe: Splitting Core Text into Pages 119
Recipe: Drawing Attributed Text into a PDF 120
Recipe: Big Phone Text 122
Summary 125
4 Geometry 127
Recipe: Retrieving Points from Bezier Paths 127
Recipe: Thinning Points 129
Recipe: Smoothing Drawings 132
Recipe: Velocity-Based Stroking 135
Recipe: Bounding Bezier Paths 137
Recipe: Fitting Paths 142
Working with Curves 144
Recipe: Moving Items Along a Bezier Path 148
Recipe: Drawing Attributed Text Along a Bezier Path 151
Recipe: View Transforms 154
Recipe: Testing for View Intersection 161
Summary 166
5 Networking 167
Recipe: Secure Credential Storage 167
Recipe: Entering Credentials 171
Recipe: Handling Authentication Challenges 176
Recipe: Uploading Data 177
Recipe: Building a Simple Web Server 181
Recipe: OAuth Utilities 184
Recipe: The OAuth Process 188
Summary 196
6 Images 197
Image Sources 197
Reading Image Data 199
Recipe: Fitting and Filling Images 203
Recipe: Rotating Images 208
Recipe: Working with Bitmap Representations 210
Recipe: Basic Image Processing 215
Recipe: Image Convolution 216
Recipe: Basic Core Image Processing 219
Capturing View-Based Screen Shots 221
Drawing into PDF Files 222
Recipe: Reflection 223
Recipe: Emitters 226
Summary 228
7 Cameras 229
Recipe: Snapping Photos 229
Recipe: Enabling a Flashlight 233
Recipe: Accessing the AVFoundation Camera 235
Recipe: EXIF 242
Image Orientations 247
Recipe: Core Image Filtering 249
Recipe: Core Image Face Detection 251
Recipe: Sampling a Live Feed 257
Summary 260
8 Audio 261
Recipe: Playing Audio with AVAudioPlayer 261
Recipe: Looping Audio 269
Recipe: Handling Audio Interruptions 272
Recipe: Recording Audio 274
Recipe: Recording Audio with Audio Queues 280
Recipe: Picking Audio with the MPMediaPickerController 286
Creating a Media Query 288
Recipe: Using the MPMusicPlayerController 290
Summary 294
9 Connecting to the Address Book 297
The AddressBook Frameworks 297
Recipe: Searching the Address Book 322
Recipe: Accessing Contact Image Data 325
Recipe: Picking People 326
Recipe: Limiting Contact Picker Properties 329
Recipe: Adding and Removing Contacts 331
Modifying and Viewing Individual Contacts 334
Recipe: The “Unknown” Person Controller 335
Summary 338
10 Location 339
Authorizing Core Location 339
Recipe: Core Location in a Nutshell 344
Recipe: Geofencing 348
Recipe: Keeping Track of “North” by Using Heading Values 350
Recipe: Forward and Reverse Geocoding 353
Recipe: Viewing a Location 355
Recipe: User Location Annotations 360
Recipe: Creating Map Annotations 363
Summary 369
11 GameKit 371
Enabling Game Center 371
Recipe: Signing In to Game Center 373
Designing Leaderboards and Achievements 375
Recipe: Accessing Leaderboards 378
Recipe: Displaying the Game Center View Controller 380
Recipe: Submitting Scores 381
Recipe: Checking Achievements 382
Recipe: Reporting Achievements to Game Center 383
Recipe: Multiplayer Matchmaking 385
Recipe: Responding to the Matchmaker 387
Recipe: Creating an Invitation Handler 388
Managing Match State 390
Recipe: Handling Player State Changes 390
Recipe: Retrieving Player Names 392
Game Play 393
Serializing Data 394
Recipe: Synchronizing Data 397
Recipe: Turn-by-Turn Matchmaking 399
Recipe: Responding to Turn-Based Invitations 401
Recipe: Loading Matches 402
Recipe: Responding to Game Play 403
Recipe: Ending Gameplay 407
Recipe: Removing Matches 410
Recipe: Game Center Voice 411
GameKit Peer Services 415
Summary 425
12 StoreKit 427
Getting Started with StoreKit 427
Creating Test Accounts 430
Creating New In-App Purchase Items 431
Building a Storefront GUI 435
Purchasing Items 438
Validating Receipts 443
Summary 445
13 Push Notifications 447
Introducing Push Notifications 447
Provisioning Push 451
Registering Your Application 454
Recipe: Push Client Skeleton 458
Building Notification Payloads 465
Recipe: Sending Notifications 466
Feedback Service 471
Designing for Push 473
Summary 473
Index 475
About the Author :
Erica Sadun is the bestselling author, coauthor, and contributor to several dozen books on programming, digital video and photography, and web design, including the widely popular The iOS 5 Developer’s Cookbook. She currently blogs at TUAW.com and has blogged in the past at O’Reilly’s Mac Devcenter, Lifehacker, and Ars Technica. In addition to being the author of dozens of iOS-native applications, Erica holds a Ph.D. in Computer Science from Georgia Tech’s Graphics, Visualization, and Usability Center. A geek, a programmer, and an author, she’s never met a gadget she didn’t love. When not writing, she and her geek husband parent three geeks-in-training, who regard their parents with restrained bemusement, when they’re not busy rewiring the house or plotting global dominance.
