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Apple Watch is the sort of science-fiction gadget that people used to dream about as kids. What kinds of apps do you envision for this new device? If you're comfortable using OS X, Xcode, and iOS-and familiar with Swift-this concise book shows you the basics of building your own apps for this wrist-mounted computer with Apple's WatchKit framework.
You'll learn what an Apple Watch is, what it isn't, and how and why people might interact with apps you build for it. This practical guide also examines the type of apps most suitable for this device, and shows you how to be a good citizen in the iOS/Watch ecosystem.
Learn the Watch app lifecycle, and understand how these apps interact with the user's iPhone
Build a Watch app and its iOS counterpart by adding controls, working with multiple screens, and sharing data
Design a simple glance, the non-interactive Watch component that provides quick-look information
Add functionality to the notification system, including actionable items, and display them on the Watch face
Design and build complications, Watch-face gadgets that can display quick snapshots of information, including future events with Time Travel
Chapter 1Understanding the Apple Watch
How Users Interact with Apple Watch
How the Apple Watch Works with iPhone
App Life Cycle
A watchOS App's Architecture
Designing for the Apple Watch
Dealing with the Device and Simulator
Diving In
Chapter 2WatchKit Apps
Displaying Content on the Watch
Responding to Actions
Controls
Playing Media
Getting Text from the User
Working with Multiple Interface Controllers
Communicating with the Device
Wrapping Up
Chapter 3Glances
Working with Glances
Creating a Glance
Wrapping Up
Chapter 4Notifications
Creating Notifications for Your iOS App
Presenting Notifications
Static and Dynamic Notification Interfaces
Setting Up for Testing Notifications
Creating the Interface Controller
Wrapping Up
Chapter 5Complications
Designing a Complication
Building a Complication
Wrapping Up