Sams Teach Yourself Cocoa Touch Programming in 24 Hours

220 Summary 230 Q&A 230 Workshop 231 Exercises 231 PART III: Advanced User-Interface Elements HOUR 10: Using View Controllers 233 View Controllers 233 Adding a Scientific Mode to the Calculator 242 Summary 250 Q&A 250 Workshop 251 Exercises 252 HOUR 11: Displaying Tables 253 Creating Tables 254 Using Table Cells 261 Creating a Twitter Application 268 Summary 272 Q&A 273 Workshop 273 Exercises 274 HOUR 12: Adding Navigation and Tab Bar Controllers 275 Using Modal View Controllers 275 Saving Application Defaults 279 Using Tab Bars 283 Using Navigation Bars 287 Summary 295 Q&A 295 Workshop 295 Exercises 296 HOUR 13: Adding Undo and Redo Functionality 297 Creating Your Own Undo/Redo Manager 297 Using NSUndoManager 305 Summary 307 Q&A 307 Workshop 308 Exercise 308 PART IV: Accessing the Internet HOUR 14: Accessing the Network 309 How Networks Work 309 How the Web Works 316 Using Cocoa Touch to Access the Web 321 Making the Twitter Application Deal with Errors 328 Summary 330 Q&A 331 Workshop 331 Exercises 332 HOUR 15: Showing a Web Page 335 Understanding UIWebView 335 Using UIWebViews 339 Using WebKit Extensions 345 Summary 352 Q&A 352 Workshop 353 Exercises 354 PART V: Saving and Retrieving Data HOUR 16: Adding Application Preferences 355 Retrieving Settings Set by the Settings Application 356 Creating a Settings Bundle for the Settings Application 357 Dynamically Updating Data from the Network 365 Summary 368 Q&A 369 Workshop 369 Exercises 370 HOUR 17: Using the SQLite Database 371 Saving and Reading Data from Files 371 Saving and Reading Data from an SQLite Database 373 Summary 385 Q&A 385 Workshop 385 Exercise 386 HOUR 18: Using Core Data 387 Using NSSortDescriptor and NSPredicate 387 Using Core Data 390 Using Xcode to Design Objects 404 Summary 407 Q&A 407 Workshop 407 Exercises 408 PART VI: Interacting with the World HOUR 19: Playing and Recording Media 409 Playing and Recording Audio 409 Playing Video Files 426 Summary 429 Q&A 430 Workshop 430 Exercises 431 HOUR 20: Sensing the World 433 Using the iPhone's Accelerometer 433 Determining the iPhone's Location 438 Taking Photos and Making Short Videos 444 Summary 446 Q&A 446 Workshop 446 Exercises 447 HOUR 21: Sharing Data 449 Using Custom URLs 449 Using Pasteboards 452 Exporting Data 455 Summary 459 Q&A 459 Workshop 460 Exercises 461 PART VII: Completing Your Application HOUR 22: Debugging 463 Using gdb, dtrace, valgrind, and nib2objc 463 Resolving Cocoa Misunderstandings 472 Summary 477 Q&A 477 Workshop 477 Exercise 478 HOUR 23: Optimizing Performance 79 Profiling Your Code . 479 Optimizing Your Memory Usage 486 Optimizing Your Code's Speed 495 Summary 500 Q&A 500 Workshop 501 Exercise 502 HOUR 24: Shipping Your Application 503 Polishing Your Application for Submission 503 Localizing Your Application 506 Submitting Your Application to the App Store 514 Summary 517 Q&A 518 Workshop 519 Exercise 520 APPENDIX A: C Primer (Online) 521 Functions 521 Primitive Types 521 Basic Operators 522 Function Signatures 522 Interface Files 522 System Libraries 522 Composite Structures 523 Memory Access 523 Arrays 524 Dynamic Memory Allocation 524 Strings 524 Types 525 New Kinds of Errors 525 APPENDIX B: Troubleshooting Xcode (Online) 527 Logging in to the Developer Website 527 Obtaining Permission to Upload Your Application to Your Device 529 Building Your Application to Run on a Device 531 Updating Mobile Provisions 533 Debugging the Ambiguous Matches Error 534 Uploading Your Application to Your Device 534 Checking Changes That Do Not Show Up 540 Checking the App Store Executable 541 APPENDIX C: Resources 543 This Book's Website 543 Books and Papers 543 Web Resources 545 APPENDIX D: Advanced Topics (Online) 547 Testing String Mutability with Exceptions 547 Uncaught Exceptions 547 The Implementation of Exceptions. 548 NSZones 549 Creating Singletons by Overriding allocWithZone: 550 Extending Objects by Overriding allocWithZone: 551 How Applications Start 552 Threads 553 pthreads 554 NSThreads 555 Deciding Whether to Use Threading or One-Shot Invocation 560 Types of Layers 562 View Controller Hierarchy Used in the Twitter Application 566 Index 567