The iPhone Developer's Cookbook: Building Applications with the iPhone SDK

The iPhone Developer's Cookbook: Building Applications with the iPhone SDK

by Erica Sadun
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The iPhone Developer's Cookbook: Building Applications with the iPhone SDK

“This book would be a bargain at ten times its price! If you are writing iPhone software, it will save you weeks of development time. Erica has included dozens of crisp and clear examples illustrating essential iPhone development techniques and many others that show special effects going way beyond Apple’s official documentation.”

—Tim Burks, iPhone Software Developer, TootSweet Software

“Erica Sadun’s technical expertise lives up to the Addison-Wesley name. The iPhone Developer’s Cookbook is a comprehensive walkthrough of iPhone development that will help anyone out, from beginners to more experienced developers. Code samples and screenshots help punctuate the numerous tips and tricks in this book.”

—Jacqui Cheng, Associate Editor, Ars Technica

“We make our living writing this stuff and yet I am humbled by Erica’s command of her subject matter and the way she presents the material: pleasantly informal, then very appropriately detailed technically. This is a going to be the Petzold book for iPhone developers.”

—Daniel Pasco, Lead Developer and CEO, Black Pixel Luminance

The iPhone Developer’s Cookbook: Building Applications with the iPhone SDK should be the first resource for the beginning iPhone programmer, and is the best supplemental material to Apple’s own documentation.”

—Alex C. Schaefer, Lead Programmer, ApolloIM, iPhone Application Development Specialist, MeLLmo, Inc

“Erica’s book is a truly great resource for Cocoa Touch developers. This book goes far beyond the documentation on Apple’s Web site, and she includes methods that give the developer a deeper understanding of the iPhone OS, by letting them glimpse at what’s going on behind the scenes on this incredible mobile platform.”

—John Zorko, Sr. Software Engineer, Mobile Devices

The iPhone and iPod touch aren’t just attracting millions of new users; their breakthrough development platform enables programmers to build tomorrow’s killer applications. If you’re getting started with iPhone programming, this book brings together tested, ready-to-use code for hundreds of the challenges you’re most likely to encounter. Use this fully documented, easy-to-customize code to get productive fast—and focus your time on the specifics of your application, not boilerplate tasks.

Leading iPhone developer Erica Sadun begins by exploring the iPhone delivery platform and SDK, helping you set up your development environment, and showing how iPhone applications are constructed. Next, she offers single-task recipes for the full spectrum of iPhone/iPod touch programming jobs:

  • Utilize views and tables
  • Organize interface elements
  • Alert and respond to users
  • Access the Address Book (people), Core Location (places), and Sensors (things)
  • Connect to the Internet and Web services
  • Display media content
  • Create secure Keychain entries
  • And much more

You’ll even discover how to use Cover Flow to create gorgeous visual selection experiences that put scrolling lists to shame!

This book is organized for fast access: related tasks are grouped together, and you can jump directly to the right solution, even if you don’t know which class or framework to use. All code is based on Apple’s publicly released iPhone SDK, not a beta. No matter what iPhone projects come your way, The iPhone Developer’s Cookbook will be your indispensable companion.

Product Details

ISBN-13: 9780321555458
Publisher: Addison-Wesley
Publication date: 10/27/2008
Series: Developer's Library
Pages: 356
Product dimensions: 6.90(w) x 8.90(h) x 1.00(d)

Table of Contents

Preface xvii

Acknowledgments xxi

About the Author xxii

1 Introducing the iPhone SDK 1

Apple’s iPhone SDK 1

Assembling iPhone Projects 2

iPhone Application Components 4

Application Folder Hierarchy 4

The Executable 4

The Info.plist File 4

The Icon and Default Images 6

XIB (NIB) files 6

Files Not Found in the Application Bundle 7

Sandboxes 7

Platform Limitations 8

Storage Limits 8

Data Access Limits 8

Memory Limits 8

Interaction Limits 9

Energy Limits 9

Application Limits 9

User Behavior Limits 10

SDK Limitations 10

Programming Paradigms 11

Object-Oriented Programming 11

Model-View-Controller 11

Building an iPhone Application Skeleton 18

The Hello World Application 19

The Classes 19

The Code 20

A Note About Sample Code and Memory Management 20

Building Hello World 23

Create an iPhone Project 23

Running the Skeleton 24

Customize the iPhone Project 24

Editing Identification Information 25

Using the Debugger 26

Apple’s iPhone Developer Program 28

Development Phones 28

Application Identifiers 29

From Xcode to Your iPhone: The Organizer Interface 30

Projects and Sources List 30

Devices List 31

Summary Tab 31

Console Tab 31

Crash Logs Tab 31

Screenshot Tab 32

About Tethering 32

Testing Applications on Your iPhone 32

Compiling for Distribution 33

Using Undocumented API Calls 34

Ad Hoc Distribution 35

Summary 36

2 Views 37

UIView and UIWindow 37

Hierarchy 37

Geometry and Traits 39

Gestures 42

Recipe: Adding Stepwise Subviews 42

Reorienting 44

Recipe: Dragging Views 45

UITouch 46

Adding Persistence 48

Recipe: Clipped Views 51

Balancing Touches with Clipping 53

Accessing Pixel-by-Pixel Values 54

Recipe: Detecting Multitouch 56

UIView Animations 59

Building UIView Animation Blocks 59

Recipe: Fading a View In and Out 60

Recipe: Swapping Views 62

Recipe: Flipping Views 64

Recipe: Applying CATransitions to Layers 66

Undocumented Animation Types 67

General Core Animation Calls 68

Recipe: Swiping Views 69

Recipe: Transforming Views 72

Centering Landscape Views 74

Summary 74

3 View Controllers 77

View Management 77

Core Classes 77

Specialized Classes 78

Creating a UIViewController 79

Working with Interface Builder to Build Views for

UIViewControllers 81

Temperature Conversion Example 81

Loading XIB Files Directly 90

Navigation Controllers 91

Setting Up a Navigation Controller 91

Pushing and Popping View Controllers 92

The Navigation Item Class 92

Recipe: Building a Simple Two-Item Menu 93

Recipe: Adding a Segmented Control 95

Recipe: Adding a UIToolbar to a Navigation Bar 97

Recipe: Navigating Between View Controllers 100

Popping Back to the Root 102

Loading a View Controller Array 102

Tab Bars 103

Summary 106

4 Alerting Users 107

Talking Directly to Your User Through Alerts 107

Logging Your Results 108

Building Alerts 109

Displaying the Alert 110

Recipe: Creating Multiline Button Displays 110

Recipe: Autotimed No-Button Alerts 112

Recipe: Soliciting Text Input from the User 113

Recipe: Presenting Simple Menus 115

“Please Wait”: Showing Progress to Your User 117

Recipe: Invoking the Basic Undocumented UIProgressHUD 117

Recipe: Using UIActivityIndicatorView 119

Recipe: Building a UIProgressView 121

Recipe: Adding Custom, Tappable Overlays 123

Recipe: Building a Scroll-Down Alert 127

Recipe: Adding Status Bar Images 131

Adding Application Badges 132

Recipe: Simple Audio Alerts 134

Vibration 136

Summary 136

5 Basic Tables 139

Introducing UITableView and UITableViewController 139

Creating the Table 140

What the UITableViewController Does 141

Recipe: Creating a Simple List Table 142

Data Source Functions 142

Reusing Cells 143

Font Table Sample 143

Recipe: Creating a Table-Based Selection Sheet 145

Recipe: Loading Images into Table Cells 149

Recipe: Setting a Cell’s Text Traits 151

Removing Cell Selections 152

Recipe: Creating Complex Cells 153

Recipe: Creating Checked Selections 155

Recipe: Deleting Cells 157

Creating and Displaying Remove Controls 157

Dismissing Remove Controls 158

Handling Delete Requests 158

Swiping Cells 158

Adding Cells 159

Recipe: Reordering Cells 161

Recipe: Working with Disclosures 162

Summary 164

6 Advanced Tables 165

Recipe: Grouping Table Selections 165

Building a Section-Based Data Source 166

Adding Section Headers 170

Recipe: Building a Section Table with an Index 171

Recipe: Custom Cell Backgrounds 172

Customizing the Table View 176

Recipe: Creating Alternate Blue and White Cells 177

Recipe: Framing Tables 179

Recipe: Adding Coupled Cell Controls 180

Recipe: Building a Multiwheel Table 182

Creating the UIPickerView 183

Recipe: Using the UIDatePicker 186

Creating the Date Picker 186

Recipe: Creating Fully Customized Group Tables 189

Creating Grouped Preferences Tables 189

Summary 195

7 Media 197

Recipe: Browsing the Documents Folder by File Type 197

Locating Documents 198

Loading and Viewing Images 200

Recipe: Displaying Small Images 201

Recipe: Using a UIWebView to Display Images 203

Displaying Web Pages with UIWebView 205

Recipe: Browsing Your Image Library 206

Recipe: Selecting and Customizing Images from the Camera Roll 209

Recipe: Snapping Pictures with the iPhone Camera 212

Working with iPhone Audio 214

Recipe: Playing Audio with Celestial 215

Recipe: Using the Media Player for Audio and Video Playback 217

Recipe: Recording Audio 219

Reading in Text Data 227

Displaying Property Lists 227

Recovering Media from Backup Files 228

Summary 229

8 Controls 231

Recipe: Building Simple Buttons 231

The UIButton class 232

Building Custom Buttons 233

Glass Buttons 236

Recipe: Adding Animated Elements to Buttons 236

Recipe: Animating Button Responses 238

Recipe: Customizing Switches 239

Customizing UIAlertView Buttons 241

Recipe: Adding Custom Slider Thumbs 242

Adding Text to the Slider 246

Recipe: Dismissing a UITextField Keyboard 246

Recipe: Dismissing UITextView Keyboards 248

Recipe: Adding an Undo Button to Text Views 250

Recipe: Creating a Text View—Based HTML Editor 253

Recipe: Building an Interactive Search Bar 255

Recipe: Adding Callout Views 258

Adding a Page Indicator Control 260

Recipe: Customizing Toolbars 263

Toolbar Tips 266

Summary 267

9 People, Places, and Things 269

Address Book Frameworks 269

Address Book UI 269

Address Book 270

Recipe: Accessing Address Book Image Data 271

Recipe: Displaying Address Book Information 273

Recipe: Browsing the Address Book 274

Browsing for (Only) E-Mail Addresses 277

Adding New Contacts 277

Core Location 278

How Core Location Works 278

Recipe: Core Location in a Nutshell 280

Recipe: Reverse Geocoding to an Address 283

Recipe: Accessing Maps Using Core Location Data 286

Recipe: Accessing Core Device Information 288

Recipe: Enabling and Disabling the Proximity Sensor 289

Recipe: Using Acceleration to Locate “Up” 290

Recipe: Using Acceleration to Move Onscreen Objects 292

Summary 295

10 Connecting to Services 297

Recipe: Adding Custom Settings Bundles 297

Declaring Application Settings 297

Recipe: Subscribing Applications to Custom URL Schemes 302

Recipe: Checking Your Network Status 304

Testing the Network Status 304

Recovering a Local IP Address 305

Querying Site IP Addresses 306

Checking Site Availability 307

Recipe: Interacting with iPhone Databases 308

Recipe: Converting XML into Trees 311

Recipe: Storing and Retrieving Keychain Items 313

Storing Multiple Keychain Values 318

Keychain Persistence 319

Sending and Receiving Files 320

Recipe: Building a Simple Web-Based Server 321

Push Notifications 325

Summary 326

11 One More Thing: Programming Cover Flow 327

The UICoverFlowLayer Class 327

Building a Cover Flow View 329

Building a Cover Flow View Controller 331

Cover Flow Data Source Methods 332

Cover Flow Delegate Methods 333

Summary 336

Index 357

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