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Learning WatchKit Programming: A Hands-On Guide to Creating watchOS 2 Applications, 2nd Edition

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Learning WatchKit Programming: A Hands-On Guide to Creating watchOS 2 Applications, 2nd Edition


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  • This beginner-level book will teach readers how to use the WatchKit Framework and WatchOS 2 to build Apple Watch Applications.
  • Revised for the new release of WatchOS
  • For iOS developers at all levels of experience
  • Tutorial-style coverage of key topics: Apple Watch navigation, app design, ForceTouch, Glances, Notifications, and more
  • Packed with Swift and Objective-C code examples you can use to jumpstart your own projects


  • Copyright 2016
  • Dimensions: 7" x 9"
  • Edition: 2nd
  • Book
  • ISBN-10: 0-13-439898-X
  • ISBN-13: 978-0-13-439898-3

Create Breakthrough Apple Watch Apps with the New watchOS 2 and the Updated WatchKit Framework!

Apple Watch is improving quickly: Using Apple’s new watchOS 2 operating system and the updated WatchKit framework, you can create tomorrow’s hottest wearable apps. Learning WatchKit Programming, Second Edition, will help you master these technologies and gain the same “early mover” advantage that early iPhone developers enjoyed.

Leading iOS development trainer and author Wei-Meng Lee guides you step by step through architecting, designing, and building cutting-edge Apple Watch apps. You’ll learn how to make the most of the newest platform improvements, including direct programmatic access to key hardware features; support for new Watch Connectivity Framework APIs; and new ways to use location, consume web services, and persist data.

Using practical Swift code examples designed for clarity and simplicity, Lee guides you through building apps from the ground up. You’ll learn how to build native watch apps that perform exceptionally well on their own and how to integrate your apps with iPhones to do even more.

Coverage includes

  • Writing high-performance, native watch apps that run independently of the iPhone
  • Accessing hardware, including Digital Crown, microphone, and Taptic Engine
  • Storyboarding apps and testing them on the Apple Watch Simulator
  • Mastering Apple Watch’s multiple-screen navigation
  • Building efficient interfaces with Apple Watch UI controls
  • Creating and programming “complications”–apps that display data on the watch face, such as alarms, tachymeters, chronographs, and calendars
  • Displaying information via labels, images, or tables
  • Passing and returning data to Interface Controllers
  • Integrating location services into Apple Watch apps
  • Using Watch Connectivity Framework APIs to link watch and iOS apps
  • Calling and consuming web services
  • Persisting data on the watch
  • Displaying short- and long-look notifications Implementing glances to help users gather information faster 

This guide will help you extend your existing iOS skills, build apps that solve a whole new set of problems, and reach millions of people in the fast-growing Apple Watch marketplace.

All of this book’s sample Swift code is available for download at informit.com/title/9780134398983. (Register your book to gain access.)


Author's Site

Please visit the author's site here.

Sample Content

Online Sample Chapter

Learning WatchKit Programming: Responding to User Actions

Sample Pages

Download the sample pages (includes Chapter 3 and Index)

Table of Contents

Preface xiii

Acknowledgments xvii

About the Author xix

Chapter 1: Getting Started with WatchKit Programming 1

Specifications of the Apple Watch 1

Getting the Tools for Development 2

Understanding the WatchKit App Architecture 3

Types of Apple Watch Applications 6

Hello, World! 7

Summary 15

Chapter 2: Apple Watch Interface Navigation 17

Interface Controllers and Storyboard 17

Navigating between Interface Controllers 22

Summary 48

Chapter 3: Responding to User Actions 49

Using the Tap Gesture to Interact with Controls 49

Summary 72

Chapter 4: Displaying and Gathering Information 73

Displaying Information 73

Gathering Information 106

Laying Out the Controls 111

Force Touch 115

Summary 123

Chapter 5: Accessing the Apple Watch Hardware 125

Making Phone Calls and Sending Messages 125

Recording Audio 127

Digital Crown 130

Accelerometer 131

Taptic Engine 134

Summary 136

Chapter 6: Programming Complications 137

Introducing the ClockKit Framework 138

Building a Movie Showtime Complication Example 141

Summary 159

Chapter 7: Interfacing with iOS Apps 161

Introducing the Watch Connectivity Framework 161

Connecting to the Outside World 185

Saving Data 198

Summary 203

Chapter 8: Displaying Notifications 205

What Is a Notification? 205

Types of Notifications on the Apple Watch 208

Summary 235

Chapter 9: Displaying Glances 237

What Is a Glance? 237

Implementing Glances 238

Making the Glance Useful 244

Updating the Glance 249

Summary 252

Index 253


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