Book Image

Building Apple Watch Projects

By : Stuart Grimshaw
Book Image

Building Apple Watch Projects

By: Stuart Grimshaw

Overview of this book

With Apple’s eagerly anticipated entry into the wearable arena, the field is wide open for a new era of app development. The Apple Watch is one of the most important technologies of our time. This easy-to-understand book takes beginners on a delightful journey of discovering the features available to the developer, right up to the completion of medium-level projects ready for App Store submission. It provides the fastest way to develop real-world apps for the Apple Watch by teaching you the concepts of Watch UI, visual haptic and audio, message and data exchange between watch and phone, Web communication, and finally Visual, haptic as well as audio feedback for users. By the end of this book, you will have developed at least four fully functioning apps for deployment on watchOS 2.

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Table of Contents (17 chapters)
Building Apple Watch Projects
Building Apple Watch Projects
Credits
Credits
About the Author
About the Author
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Exploring the New Platform
Exploring the New Platform
Wide open future
A closer look at the watch
A look under the hood
One App, four interfaces
User Input Hardware
Extension of the iPhone, but more
Summary
2
Hello Watch
Hello Watch
Setting it all up
Looking over the project
Adding some content on screen
Give the UI some visual appeal
Adding some animation magic
Getting user input
Ideas for self study
Summary
3
C-Quence – A Memory Game
C-Quence – A Memory Game
Plan the app
Setting up the project
GameLogic
Interface Controller
Summary
4
Expanding on C-Quence
Expanding on C-Quence
Implementing the methods
Testing and tweaking
Communicating with the phone
Summary
5
On Q – A Productivity App
On Q – A Productivity App
Download the project template
Plan the Watch app
Setting up the project
Writing the code
Testing with the iPhone and real data
Challenges for further growth
Summary
6
Watching the Weather
Watching the Weather
Adding a Glance to an app
Setting up the project
Getting the data
Interface Controllers
Glances
Challenges for expansion
Summary
7
Plot Buddy – All about Location
Plot Buddy – All about Location
Planning the app
Setting up the project
Data structure
Getting location data
The Interface Controllers
WatchConnectivity
Final test
Challenges for expansion
Summary
8
Images, Animation, and Sound
Images, Animation, and Sound
Adding an icon
Animation
Audio and Video
Summary
9
Wear It, Test It, Tweak It, Ship It
Wear It, Test It, Tweak It, Ship It
Installation on a physical device
Testing in the field
App Store submission process overview
Preparing for submission
Summary
10
This Is Only the Beginning
This Is Only the Beginning
Using animation to the fullest
Making use of code snippets
Post release maintenance
Expanding your skills
Tools
Sites to be aware of
Stay in touch
Summary
One last word from the author
Index
Index

Data structure

Firstly, we define a typealias for the data structure added to both the watch and the phone targets, that will hold the location data, by following these steps:

Shared constants

In the downloaded project, create a new Swift file, name it SharedConstants.swift, being sure to select both targets, Plot Buddy and Plot Buddy WatchKit Extension, as illustrated here:

Select this file in the project navigator and replace the import statement with the following code:

Import WatchKit

typealias LocationSet = [CLLocation] //1

let ApplicationContextDataKey = "Data" //2

  1. Our LocationSet data structure is nothing more than an array of CLLocation objects, which is the type returned by our calls to the Core Location framework.

  2. For the sake of safety, we define a String constant for use as the Key to the data object passed from watch to phone in the ApplicationContext.

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