The best place to start iOS application development The Core iOS Developer’s Cookbook provides ready-to-use code solutions for common iOS challenges, providing recipes that help you master the core technology at the heart of iOS. Renowned iOS programming expert Erica Sadun and top iOS developer Rich Wardwell cover the topics you need to create successful mobile applications that take full advantage of iOS graphics, touches, and views. As in all of Sadun’s iOS bestsellers, The Core iOS Developer’s Cookbook translates modern best practices into working code, distilling key concepts into concise recipes you can easily understand and apply to your own projects. This isn’t just cut-and-paste; using examples, Sadun and Wardwell fully explain both the “how” and “why” that underscore effective and successful iOS development. Coverage includes Creating direct touch-based interfaces with multi-touch, gestures, and custom gesture recognizers Building and customizing controls in powerful ways Adding novel motion effects Alerting users via pop-ups, progress bars, local notifications, popovers, audio cues, and more Using Xcode modules to easily integrate system frameworks and headers Assembling views and animation, organizing view hierarchies, and understanding how views work together Supporting multiple screen geometries with the breakthrough Auto Layout constraints system Controlling keyboards, making onscreen elements “text aware,” and efficiently scanning and formatting text Organizing user workspaces with view controllers Managing photos, videos, email, and text messages Leveraging enhanced iOS support for social media activities, including Flickr and Vimeo Implementing VoiceOver accessibility, including text-to-speech Getting started with Core Data-managed data stores Leveraging powerful networking and web services support Using APIs to enhance the user experience

Table of Contents:
Preface xiii Chapter 1: Gestures and Touches   1 Touches   1 Recipe: Adding a Simple Direct Manipulation Interface   5 Recipe: Adding Pan Gesture Recognizers   7 Recipe: Using Multiple Gesture Recognizers Simultaneously   9 Recipe: Constraining Movement   14 Recipe: Testing Touches   15 Recipe: Testing Against a Bitmap   17 Recipe: Drawing Touches Onscreen   20 Recipe: Smoothing Drawings   22 Recipe: Using Multi-Touch Interaction   26 Recipe: Detecting Circles   29 Recipe: Creating a Custom Gesture Recognizer   34 Recipe: Dragging from a Scroll View   37 Recipe: Live Touch Feedback   40 Recipe: Adding Menus to Views   45 Summary   47 Chapter 2: Building and Using Controls   49 The UIControl Class   49 Buttons   53 Buttons in Interface Builder   55 Recipe: Building Buttons   56 Recipe: Animating Button Responses   60 Recipe: Adding a Slider with a Custom Thumb   62 Recipe: Creating a Twice-Tappable Segmented Control   67 Working with Switches and Steppers   70 Recipe: Subclassing UIControl   72 Recipe: Building a Star Slider   76 Recipe: Building a Touch Wheel   79 Recipe: Creating a Pull Control   83 Recipe: Building a Custom Lock Control   88 Recipe: Image Gallery Viewer   93 Building Toolbars   96 Summary   98 Chapter 3: Alerting the User   101 Talking Directly to Your User through Alerts   101 Recipe: Using Blocks with Alerts   105 Recipe: Using Variadic Arguments with Alert Views   110 Presenting Lists of Options   112 “Please Wait”: Showing Progress to Your User   115 Recipe: Modal Progress Overlays   117 Recipe: Custom Modal Alert View   119 Recipe: Basic Popovers   124 Recipe: Local Notifications   126 Alert Indicators   128 Recipe: Simple Audio Alerts   129 Summary   133 Chapter 4: Assembling Views and Animations   135 View Hierarchies   135 Recipe: Recovering a View Hierarchy Tree   137 Recipe: Querying Subviews   139 Managing Subviews   141 Tagging and Retrieving Views   142 Recipe: Naming Views by Object Association   143 View Geometry   146 Recipe: Working with View Frames   150 Recipe: Retrieving Transform Information   158 Display and Interaction Traits   164 UIView 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