Building WatchKit Applications

Jean-Luc David | jldavid@gmail.com | @jldavid

Kitchener Waterloo iOS Meetup Group

Who Am I?

• iOS & Android Instructor

• Musician

• Hacker

• Wearables Developer

Samsung Gear S

Google Glass

Apple Watch

Accelerometer Gyroscope

Heart Rate Monitor

Bluetooth

Digital CrownConversation

ButtonForce Touch

Watch Features

• New UI Elements

• Simple Navigation

• Glances

• Notifications

Two Sizes38mm 42mm

Applications

What Tools Do You Need?

• Mac

• Xcode 6.3

• iOS SDK 8.2+

• Apple Watch (available next week)

• Developer Account

ArchitectureiPhone App Watch App

Bluetooth

Storyboards

Resources

WatchKitWatchKit

WatchKit Extension Code &

Resources

Interactions

Your controller &model code

Your views

& static images

Updateview

Event(button

tap)

Enhances rather than replace your iPhone

Interaction Types

PaginatedHierarchical

UI Elements

• Labels

• Images

• Buttons

• Switches

• Sliders

• Maps

Graphics

Glances

• Template Based

• Single Screen

• Not Scrollable

• Read-Only

• Optional

Notifications

• Small screens

• Short interactions

• Short & long view

• Can contain useractions

App Icon

TitleString From

Notification

App Name

Modal Sheets

Single Paged

Images & Data

• Use local images - load extremely slow on Bluetooth

• URL Caching / ASync Fetching

• NSUserDefaults for caching data

Limitations

• iPhone must have iOS 8.2+

• Small Screens (38mm & 42mm)

• Limited Information

• Short Interactions

• No Health Kit

• No Access to Sensors

Developer Opportunities

• Watch Faces

• Custom Notifications

• Device Control

• Health Tracking

• Event Display

• Data Exchange / Social

• Payments / Commerce

Thank you!

@jldavid

jldavid@gmail.com