Jeff Kelley - Developing for Apple Watch: Create Native watchOS Apps with the WatchKit SDK

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The more books I write, the more I appreciate those around me who help me do it.

This book never would have been finished without the continued efforts of Rebecca Gulick, my editor, and the entire staff at The Pragmatic Bookshelf. Their questions, comments, and editing shaped the book into what it is today. Along the same lines, I owe a great deal of thanks to the tech reviewers who helped go over pre-release versions of the book: Chris Adamson, Thomas Alvarez, Albert Choy, Kevin Garriott, Gbor Lszl Hajba, Alexander Henry, Jason Humphries, Carlos Lopez, Kevin Munc, Stephen Orr, Mayur Patil, Kim Shrier, Mario Tatis, Mattio Valentino, Matthew White, and Stephen Wolff. Thanks to them taking time out of their busy schedules, the books technical contents are that much more accurate.

Working on a book necessarily means not doing other things, and my family has definitely had to put up with my absence and distraction as Ive undertaken writing this one. Theyve earned many thanks. Hopefully watchOS 3 wont change as much as watchOS 2 did!

Finally, Id like to thank my coworkers and the cofounders of Detroit Labs. Working at such an amazing place allows me to do things like write books in my free time. I can honestly say Detroit Labs is the best place Ive ever worked, and I cant imagine being anywhere else.

Apple Watch has inspired a brand-new platform, watchOS, for iOS developersthats you!to take advantage of. Youre now competing not only for your users iPhone screens but also for space on their wrists. For the first time, you can make an iOS app that your users will actually wear . As intimate as that is, you want to make sure you can deliver the best experience possible so your app will stay on those wrists. This book will help you make an app that not only stays on your users wrists, but that they use every single time they look at their watch.