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watchOS by Tutorials Updated for Swift 4 and watchOS 4

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Happy Monday – it’s another iOS 11 Launch Party book release!

watchOS by Tutorials, Third Edition teaches you everything you need to know to develop your own apps for watchOS 4, including new features such as streamlined audio recording, direct Bluetooth communications, a unified process runtime, increased memory limits, and more.

This will be a free update for existing watchOS by Tutorials PDF customers — our way to say “thanks” to our readers for their support.

Don’t own watchOS by Tutorials yet? Read on to see how you can get a copy!

What is watchOS by Tutorials?

This book is for intermediate iOS developers who already know the basics of iOS and Swift development but want to learn how to make Apple Watch apps for watchOS 4.

We’ve added a few new chapters in this edition:

Recording Audio: Now that you can perform inline audio recording in watchOS 4, we’ve created a dedicated chapter to showing you how to interact with this functionality in your own apps. This replaces the “Playing Audio and Video” chapter from the previous edition.

Handoff Video Playback: We’ve expanded the original “Handoff” chapter and migrated some of the video portion from the previous edition’s “Playing Audio and Video” chapter.

Core Bluetooth: In watchOS 4, you can pair and interact directly with Bluetooth LE devices. Learn how to send data and control instructions directly from the Watch to a BLE device! This chapter replaces the Haptic Feedback” chapter from the previous edition.

watchOS by Tutorials is a whopping 27 chapters and 535 pages. Let’s take a quick look at what’s inside:

  • Chapter 1, Hello, Apple Watch!: Dive straight in and build your first watchOS app–a very modern twist on the age-old “Hello, world!” app.

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  • Chapter 2, Designing Great Watch Apps: Apple has repeatedly emphasized glanceable, actionable, and responsive as the design goal of watchOS apps. From icon design to the new interactivity APIs, make your apps stand out from the rest.
  • Chapter 3, Architecture: watchOS might support native apps, but they still have an unusual architecture. This chapter will teach you everything you need to know about this unique aspect of watch apps.
  • Chapter 4, UI Controls: There’s not a UIView to be found! In this chapter you’ll dig into the suite of interface objects that ship with WatchKit–watchOS’ user interface framework.

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  • Chapter 5, Pickers: WKInterfacePicker is the only programmatic way to work with the Digital Crown. You’ll learn how to set one up, what the different visual modes are, and how to respond to the user interacting with the Digital Crown via the picker.

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  • Chapter 6, Layout: Auto Layout? Nope. Springs and Struts then? Nope. Guess again. Get an overview of the layout system you’ll use to build the interfaces for your watchOS apps.

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  • Chapter 7, Tables: Tables are the staple ingredient of almost any watchOS app. Learn how to set them up, how to populate them with data, and just how much they differ from UITableView.
  • Chapter 8, Navigation: You’ll learn about the different modes of navigation available on watchOS, as well as how to combine them.

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  • Chapter 9, Digital Crown and Gesture Recognition: Explore the rich set of physical interactions with the Watch, including the Digital Crown, pan gestures, and force touch!
  • Chapter 10, Snapshot API: Glances are out, snapshots are in. Learn how to make your app appear in the new Dock — and update the icon dynamically!

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  • Chapter 11, Networking: NSURLSession, meet Apple Watch. That’s right, you can now make network calls directly from the watch, and this chapter will show you the ins and outs of doing just that.

  • Chapter 12, Animation: The way you animate your interfaces has changed in watchOS. You’ll learn everything you need to know about both animated image sequences and the new API in this chapter.
  • Chapter 13, CloudKit: Learn how to persist and retrieve data with CloudKit and keep your Watch and iPhone synchronized — even when they’re not in range of each other.

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  • Chapter 14, Notifications: watchOS offers support for several different types of notifications, and allows you to customize them to the individual needs of your watch app. In this chapter, you’ll get the complete overview.

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  • Chapter 15, Complications: Complications are small elements that appear on the user’s selected watch face and provide quick access to frequently used data from within your app. This chapter will walk you through the process of setting up your first complication, along with introducing each of the complication families and their corresponding layout templates.

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  • Chapter 16, Watch Connectivity: With the introduction of native apps, the way the watch app and companion iOS app share data has fundamentally changed. Out are App Groups, and in is the Watch Connectivity framework. In this chapter you’ll learn the basics of setting up device-to-device communication between the Apple Watch and the paired iPhone.

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  • Chapter 17, Audio Recording: You can now record audio directly on the Apple Watch inline in your apps, without relying on the old-style system form sheets. In this chapter, you’ll gain a solid understanding of how to implement this, as well as learn about some of the idiosyncrasies of the APIs, which are related to the unique architecture of a watch app

  • Chapter 18, Interactive Animations: Build a simple game that you can control with just your wrist — using SpriteKit and SceneKit.

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  • Chapter 19, Advanced Watch Connectivity: In earlier chapters, you learned how to set up a Watch Connectivity session and update the application context. In this chapter, you’ll take a look at some of the other features of the framework, such as background transfers and real-time messaging.

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  • Chapter 20, Advanced Complications: Now that you know how to create a basic complication, this chapter will walk you through adding Time Travel support, as well giving you the lowdown on how to efficiently update the data presented by your complication.

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  • Chapter 21, Handoff Video Playback: Want to allow your watch app users to begin a task on their watch and then continue it on their iPhone? Sure you do, and this chapter will show exactly how to do that through the use of Handoff.

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  • Chapter 22, Core Motion: The Apple Watch doesn’t have every sensor the iPhone does, but you can access what is available via the Core Motion framework. In this chapter, you’ll learn how to set up Core Motion, how to request authorization, and how to use the framework to track the user’s steps.

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  • Chapter 23, HealthKit: The HealthKit framework allows you to access much of the data stored in user’s health store, including their heart rate! This chapter will walk you through incorporating HealthKit into your watch app, from managing authorization to recording a workout session.

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  • Chapter 24, Core Location: A lot of apps are now location aware, but in order to provide this functionality you need access to the user’s location. With watchOS, developers have exactly that via the Core Location framework. Learn everything you need to know about using the framework on the watch in this chapter.

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  • Chapter 25, Core Bluetooth: In watchOS 4, you can pair and interact with BLE devices directly. Learn how to send control instructions and other data directly over Bluetooth.

  • Chapter 26, Localization: Learn how to expand your reach and grow a truly international audience by localizing your watch app using the tools and APIs provided by Apple.

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  • Chapter 27, Accessibility: You want as many people as possible to enjoy your watch app, right? Learn all about the assistive technologies available in watchOS, such as VoiceOver and Dynamic Type, so you can make your app just as enjoyable for those with disabilities as it is for those without.

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One thing you can count on: after reading this book you’ll have all the experience necessary to build rich and engaging apps for the Apple Watch platform.

About the Authors

Of course, our book would be nothing without our team of experienced and dedicated authors:

Ehab Amer is a software developer in Cairo, Egypt. In the day, he leads mobile development teams create cool apps, In his spare time he spends dozens of hours improving his imagination and finger reflexes playing computer games… or at the gym!

ScottScott Atkinson lives in Alexandria, VA with his wife, Kerri, and daughter, Evelyn. In his day job, he is a software developer at Capital One. When not writing software, he spends time rowing on the Potomac river or exploring new restaurants and cooking great food.

SoheilSoheil Azarpour is an engineer, developer, author, creator, husband and father. He enjoys bicycling, boating and playing the piano. He lives in Merrimack, NH, and creates iOS apps both professionally and independently.

MatthewMatthew Morey is an engineer, author, hacker, creator and tinkerer. As an active member of the iOS community and CTO at MJD Interactive he has led numerous successful mobile projects worldwide. When not developing apps he enjoys traveling, snowboarding, and surfing. He blogs about technology and business at matthewmorey.com.

BenBen Morrow delights in discovering the unspoken nature of the world. He’ll tell you the surprising bits while on a walk. He produces beauty by drawing out the raw wisdom that exists within each of us.

AudreyAudrey Tam retired in 2012 from a 25yr career as a computer science academic. Her teaching included many programming languages, as well as UI design and evaluation. Before moving to Australia, she worked on Fortran and PL/1 simulation software at IBM. Audrey now teaches iOS app development to non-programmers.

JackJack Wu has built dozens of iOS apps and enjoys it very much. Outside of work, Jack enjoys coding on the beach, coding by the pool, and sometimes just having a quick code in the park.

Free watchOS Chapters this Week

To help celebrate the launch, we’re going to open up the book and share some free chapters with you this week! This will give you a chance to check out the book — we’re confident you’ll love it!

Now Available in ePub!

And as another exciting announcement, by popular request, watchOS by Tutorials is now available in ePub format. Take it on the go with you on your iPad, iPhone or other digital reader and enjoy all the mobile reading benefits that ePub has to offer!

Where To Go From Here?

watchOS by Tutorials, Third Edition is now 100% complete, fully updated for Swift 4, watchOS 4 and Xcode 9 — and available today.

  • If you’ve already bought the watchOS by Tutorials PDF, you can download the new book immediately on the the store page for the book page.
  • If you don’t have watchOS by Tutorials yet, you can grab your own copy in our online store.

And to help sweeten the deal, the digital edition of the book is on sale for $49.99! But don’t wait — this sale price is only available for a limited time.

Speaking of sweet deals, be sure to check out the great prizes we’re giving away this year with the iOS 11 Launch Party, including over $9,000 in giveaways!

To enter, simply retweet this post using the #ios11launchparty hashtag by using the button below:


We hope you enjoy this free update, and stay tuned for more book releases and updates coming soon!

The post watchOS by Tutorials Updated for Swift 4 and watchOS 4 appeared first on Ray Wenderlich.


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