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Developing for Apple Watch, 2nd Edition

Book Description

You've got a great idea for an Apple Watch app. But how do you get your app from idea to wrist? This book shows you how to make native watchOS apps for Apple's most personal device yet. You'll learn how to display beautiful interfaces to the user, how to use the watch's heart rate monitor and other hardware features, and the best way to keep everything in sync across your users' devices. New in this edition is coverage of native apps for watchOS 2. With the new version of the WatchKit SDK in Xcode 7, your apps run directly on the watch.

Table of Contents

  1.  Acknowledgments
  2.  Preface
    1. What’s in This Book?
    2. Who’s This Book For?
    3. The Code in This Book
    4. Online Resources
  3. 1. An Overview of Apple Watch
    1. Apple Watch Basics
    2. Apple Watch App-Design Concepts
    3. From iPhone App to Apple Watch App
    4. Wrap-Up
  4. 2. WatchKit Extension Overview
    1. Creating Your First WatchKit Extension
    2. Adding User Interface Elements
    3. Adding a Glance
    4. The iPhone App--WatchKit Extension Relationship
    5. Deployment of WatchKit Apps
    6. Wrap-Up
  5. 3. WatchKit User Interfaces
    1. Meet WKInterfaceObject
    2. Creating Interface Objects
    3. Designing Your UI in the Storyboard
    4. Interface Object Layout
    5. Creating Your Apple Watch App
    6. Wrap-Up
  6. 4. Organizing Your UI with Groups
    1. Group Basics
    2. Adding Detail to a Screen
    3. Animation and Groups
    4. Wrap-Up
  7. 5. Delivering Dynamic Content with Tables
    1. Comparing WatchKit Tables and iOS Table Views
    2. Row Types and Storyboard Groups
    3. Linking Content to the UI with Row Controllers
    4. Configuring the Content in Tables
    5. Modifying Tables
    6. Considering Table Input
    7. Performance Concerns
    8. Wrap-Up
  8. 6. Navigating Between Interfaces
    1. Linking Interfaces in Your Storyboard
    2. Interface Transitions in Code
    3. Passing Data Between Interfaces
    4. Configuring Tracks in TapALap
    5. Wrap-Up
  9. 7. WatchKit Extension Lifecycle
    1. Adding Lifecycle Methods
    2. Adopting Handoff in the Extension Delegate
    3. Responding to Notifications
    4. Wrap-Up
  10. 8. Communicating with WatchConnectivity
    1. Making Network Requests on Apple Watch
    2. Preparing for WatchConnectivity: Persisting Data in TapALap
    3. Talking to the iPhone with WatchConnectivity
    4. Wrap-Up
  11. 9. Creating Complications with ClockKit
    1. Watch Faces and Complications
    2. Providing Complications in Your App
    3. Managing Complication Privacy
    4. Providing Placeholder Complications
    5. Restricting Complication Families
    6. Wrap-Up
  12. 10. Extending Complications with Time Travel
    1. Making Your Complication Excellent with Time Travel
    2. Updating Complications
    3. Wrap-Up
  13. 11. Getting Personal with Sensor Data and HealthKit
    1. Getting Device Motion with the CoreMotion Framework
    2. Working Out with HealthKit
    3. Wrap-Up
  14. 12. Unlocking Watch App Performance
    1. Making Apps Launch Quickly
    2. Increasing Performance by Removing Data
    3. Inspecting Performance with Instruments
    4. The Illusion of Performance: Preloading Data
    5. Wrap-Up
  15. 13. Being a Good Watch App Citizen
    1. Localizing and Internationalizing Your App
    2. Supporting Every User with Accessibility
    3. Wrap-Up