The Core iOS Developer's Cookbook

Animations 165 Recipe: Fading a View In and Out 167 Recipe: Swapping Views 168 Recipe: Flipping Views 169 Recipe: Using Core Animation Transitions 170 Recipe: Bouncing Views as They Appear 172 Recipe: Key Frame Animations 174 Recipe: Image View Animations 176 Summary 177 Chapter 5: View Constraints 179 What Are Constraints? 179 Constraint Attributes 180 The Laws of Constraints 182 Constraints and Frames 184 Creating Constraints 186 Format Strings 189 Predicates 194 Format String Summary 196 Aligning Views and Flexible Sizing 198 Constraint Processing 198 Managing Constraints 199 Recipe: Comparing Constraints 201 Recipe: Creating Fixed-Size Constrained Views 204 Recipe: Centering Views 209 Recipe: Setting Aspect Ratio 210 Recipe: Responding to Orientation Changes 212 Debugging Your Constraints 214 Recipe: Describing Constraints 215 Constraint Macros 218 Summary 221 Chapter 6: Text Entry 223 Recipe: Dismissing a UITextField Keyboard 224 Recipe: Dismissing Text Views with Custom Accessory Views 228 Recipe: Adjusting Views Around Keyboards 230 Recipe: Creating a Custom Input View 235 Recipe: Making Text-Input-Aware Views 240 Recipe: Adding Custom Input Views to Nontext Views 243 Recipe: Building a Better Text Editor (Part I) 246 Recipe: Building a Better Text Editor (Part II) 248 Recipe: Text-Entry Filtering 252 Recipe: Detecting Text Patterns 255 Recipe: Detecting Misspelling in a UITextView 260 Searching for Text Strings 262 Summary 262 Chapter 7: Working with View Controllers 263 View Controllers 263 Developing with Navigation Controllers and Split Views 266 Recipe: The Navigation Item Class 271 Recipe: Modal Presentation 273 Recipe: Building Split View Controllers 278 Recipe: Creating Universal Split View/Navigation Apps 283 Recipe: Tab Bars 286 Remembering Tab State 290 Recipe: Page View Controllers 293 Recipe: Custom Containers 303 Recipe: Segues 309 Summary 315 Chapter 8: Common Controllers 317 Image Picker Controller 317 Recipe: Selecting Images 319 Recipe: Snapping Photos 326 Recipe: Recording Video 331 Recipe: Playing Video with Media Player 333 Recipe: Editing Video 336 Recipe: Picking and Editing Video 339 Recipe: E-mailing Pictures 341 Recipe: Sending a Text Message 344 Recipe: Posting Social Updates 347 Summary 349 Chapter 9: Creating and Managing Table Views 351 iOS Tables 351 Delegation 352 Creating Tables 353 Recipe: Implementing a Basic Table 356 Table View Cells 360 Recipe: Creating Checked Table Cells 362 Working with Disclosure Accessories 364 Recipe: Table Edits 366 Recipe: Working with Sections 374 Recipe: Searching Through a Table 381 Recipe: Adding Pull-to-Refresh to Your Table 387 Recipe: Adding Action Rows 390 Coding a Custom Group Table 395 Recipe: Building a Multiwheel Table 396 Using UIDatePicker 400 Summary 401 Chapter 10: Collection Views 403 Collection Views Versus Tables 403 Establishing Collection Views 405 Flow Layouts 407 Recipe: Basic Collection View Flows 412 Recipe: Custom Cells 416 Recipe: Scrolling Horizontal Lists 418 Recipe: Introducing Interactive Layout Effects 422 Recipe: Scroll Snapping 424 Recipe: Creating a Circle Layout 425 Recipe: Adding Gestures to Layout 431 Recipe: Creating a True Grid Layout 433 Recipe: Custom Item Menus 440 Summary 442 Chapter 11: Documents and Data Sharing 445 Recipe: Working with Uniform Type Identifiers 445 Recipe: Accessing the System Pasteboard 451 Recipe: Monitoring the Documents Folder 454 Recipe: Activity View Controller 460 Recipe: The Quick Look Preview Controller 470 Recipe: Using the Document Interaction Controller 473 Recipe: Declaring Document Support 480 Recipe: Creating URL-Based Services 486 Summary 489 Chapter 12: A Taste of Core Data 491 Introducing Core Data 491 Entities and Models 492 Creating Contexts 494 Adding Data 495 Querying the Database 498 Removing Objects 500 Recipe: Using Core Data for a Table Data Source 501 Recipe: Search Tables and Core Data 505 Recipe: Adding Edits to Core Data Table Views 508 Recipe: A Core Data-Powered Collection View 514 Summary 519 Chapter 13: Networking Basics 521 Recipe: Checking Your Network Status 521 Scanning for Connectivity Changes 524 The URL Loading System 526 Recipe: Simple Downloads 528 Recipe: Downloads with Feedback 533 Recipe: Background Transfers 543 Recipe: Using JSON Serialization 546 Recipe: Converting XML into Trees 549 Summary 554 Chapter 14: Device-Specific Development 555 Accessing Basic Device Information 555 Adding Device Capability Restrictions 556 Recipe: Checking Device Proximity and Battery States 559 Recipe: Recovering Additional Device Information 563 Core Motion Basics 565 Recipe: Using Acceleration to Locate "Up" 566 Working with Basic Orientation 568 Recipe: Using Acceleration to Move Onscreen Objects 571 Recipe: Accelerometer-Based Scroll View 575 Recipe: Retrieving and Using Device Attitude 578 Detecting Shakes Using Motion Events 579 Recipe: Using External Screens 581 Tracking Users 587 One More Thing: Checking for Available Disk Space 588 Summary 589 Chapter 15: Accessibility 591 Accessibility 101 591 Enabling Accessibility 593 Traits 594 Labels 595 Hints 596 Testing with the Simulator 597 Broadcasting Updates 599 Testing Accessibility on iOS 599 Speech Synthesis 601 Dynamic Type 602 Summary 604 Appendix A: Objective-C Literals 605 Numbers 605 Boxing 606 Container Literals 607 Subscripting 608 Feature Tests 609 Index 611