Objective-C Fundamentals

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Summary 287 and its ease of use and visual nature permitting exploration and interpretation of captured data is unrivaled. Debugging applications that you’ve deployed via the iTunes App Store requires additional forethought if you want to maximize your ability to diagnose crashes that you yourself can’t replicate. At a minimum, you should archive a copy of your source code and debugging symbols (*.dsym files) for each update of the application you submit. Doing so increases your chances of being able to quickly zero in on probable causes of crashes that occur “out in the wild.”
appendix A Installing the iOS SDK In this appendix we briefly walk you through the installation of the iOS software development kit (SDK). A.1 Installing the iOS SDK The first step is to select and sign up for the Apple developer program and download the SDK. A.1.1 A.1.2 Becoming an Apple developer and downloading the SDK Apple frequently changes the way you can download and install Xcode. At the time of this writing, you simply have to search for “Xcode” on the Mac App Store, where you can then download Xcode 4.1 for Mac OS X Lion for free. You should always be able to find the latest version and instructions at . To get access to valuable and up-to-date developer resources you should also set up a free developer account at . Click the blue Get Started button, and complete the registration steps. The free account also gives you access to the previous versions of Xcode for Mac OS X Snow Leopard and below. However, simply downloading or purchasing Xcode through the Mac App Store will not enable you to test and run your apps on an actual iOS device. If you plan to test your applications on an actual device—which you should—or to submit them to the App Store, choose the $99/year iOS developer program. You can enroll by going to , clicking the blue Enroll Now button, and completing the enrollment. That will enable you to test your apps on devices and submit them to the App Store. System requirements At the time of this writing, the requirements to install Xcode and the iOS SDK from the Mac App Store are an Intel-based Mac that runs Mac OS X Lion 10.7 or later and 288
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Christopher K. Fairbairn Johannes F
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Objective-C Fundamentals CHRISTOPHE
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PART 1 brief contents GETTING START
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viii CONTENTS 1.5 Compiling the Coi
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x CONTENTS 5.4 Declared properties
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xii CONTENTS PART 3 MAKING MAXIMUM
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preface Having been involved in the
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ACKNOWLEDGMENTS xvii Christopher wo
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ABOUT THIS BOOK xix skills. There
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author online Purchase of Objective
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Part 1 Getting started with Objecti
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4 CHAPTER 1 Building your first iOS
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10 CHAPTER 1 Building your first iO
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Data types, variables, and constant
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30 CHAPTER 2 Data types, variables,
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56 CHAPTER 3 An introduction to obj
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Storing data in collections This ch
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76 CHAPTER 4 Storing data in collec
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Creating classes This chapter cover
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Declaring the interface of a class
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Providing an implementation for a c
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Declared properties 109 - (Property
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Declared properties 111 Let’s bri
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Declared properties 113 Although @s
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Creating and destroying objects 115
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Using the class in the Rental Manag
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Summary 123 a number of rental prop
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Subclassing 125 the only class you
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Adding new instance variables 127 s
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Accessing existing instance variabl
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Overriding methods 131 } return gen
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Overriding methods 133 } "for $%@ p
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Class clusters 135 Figure 6.2 Graph
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Categories 137 This code tells the
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Subclassing in your demo applicatio
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Subclassing in your demo applicatio
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Summary 143 6.8 Summary Object-orie
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Defining a protocol 145 Mastering t
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Implementing a protocol 147 7.2.1 C
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Implementing a protocol 149 Listing
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Important protocols 151 iPhone UIKi
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Important protocols 153 executed. T
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Important protocols 155 Any table v
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Important protocols 157 or in table
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Important protocols 159 For s
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Important protocols 161 Listing 7.1
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Dynamic typing and runtime type inf
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Static vs. dynamic typing 165 If yo
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How messaging works 167 Messages ar
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How messaging works 169 8.3.2 Handl
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Runtime type information 171 The if
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Runtime type information 173 8.4.3
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Practical uses of runtime type intr
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Memory management This chapter cove
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Reference counting 179 Figure 9.1 A
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Reference counting 181 the object i
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Reference counting 183 Keep yoursel
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Autorelease pools 185 Ideally, you
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Autorelease pools 187 With knowledg
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Autorelease pools 189 i * 1000 + j]
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Memory zones 191 Memory zones have
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Responding to low-memory warnings 1
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Summary 199 addObserver:selector:na
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Part 3 Making maximum use of framew
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Error and exception handling This c
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NSError—handling errors the Cocoa
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Creating NSError objects 207 chapte
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Creating NSError objects 209 10.2.2
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Summary 211 10.3.2 Catching excepti
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Making your objects KVC-compliant 2
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Making your objects KVC-compliant 2
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Handling special cases 217 This que
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Filtering and matching with predica
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Sample application 225 rentingFor:2
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Summary 227 The core of the logic o
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Core Data history 229 Structured Qu
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Core Data objects 231 In Xcode you
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Core Data resources 233 careful to
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Building the PocketTasks applicatio
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Page 274 and 275: Beyond the basics 251 How do you us
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Page 282 and 283: The syntax of blocks 259 What if yo
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Page 288 and 289: Performing work asynchronously 265
Page 298 and 299: Summary 275 more to learn about GCD
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Page 302 and 303: Understanding NSLog 279 Figure 14.3
Page 304 and 305: Bringing memory leaks under control
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Page 312 and 313: Preparing your iOS device for devel
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Page 316 and 317: appendix B The basics of C Througho
Page 318 and 319: Variable naming conventions 295 As
Page 320 and 321: Expressions 297 Table B.3 Relationa
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Page 334 and 335: Summary 311 CONTINUE The continue s
Page 336 and 337: A short history of Objective-C 313
Page 338 and 339: The iPhone SDK: Safari 315 C.2 Alte
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Page 344 and 345: Scripting languages: Lua and Ruby 3
Page 346 and 347: Mono (.NET) 323 the iOS platform. F
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Page 350 and 351: index Symbols ^ operator 298 - oper
Page 352 and 353: INDEX 329 application-specific quer
Page 354 and 355: INDEX 331 collections (continued) e
Page 356 and 357: INDEX 333 E e character 35 editButt
Page 358 and 359: INDEX 335 iOS Developer account 9 i
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INDEX 337 mutableCopyWithZone 190 M
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INDEX 339 Organizer window 291 over
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INDEX 341 setFlag 164 setNilValueFo
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INDEX 343 vardic method 75 variable
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