Presented at the Kitchener Waterloo iOS Meetup group on April 16, 2015

1. Building WatchKit
Applications
Jean-Luc David | jldavid@gmail.com | @jldavid
Kitchener Waterloo iOS Meetup Group

2. Who Am I?
• iOS & Android Instructor
• Musician
• Hacker
• Wearables Developer

3. Samsung Gear S

4. Google Glass

6. Apple Watch
Accelerometer Gyroscope
Heart Rate
Monitor
Bluetooth
Digital Crown
Conversation
Button
Force Touch

7. Watch Features
• New UI Elements
• Simple Navigation
• Glances
• Notifications

8. Two Sizes
38mm 42mm

9. Applications

10. What Tools Do You Need?
• Mac
• Xcode 6.3
• iOS SDK 8.2+
• Apple Watch
(available next week)
• Developer Account

11. Architecture
iPhone App Watch App
Bluetooth
Storyboards
Resources
WatchKitWatchKit
WatchKit
Extension
Code &
Resources

12. Interactions
Your
controller &
model code
Your
views
& static
images
Update
view
Event
(button
tap)
Enhances rather than replace your iPhone

13. Interaction Types
PaginatedHierarchical

14. UI Elements
• Labels
• Images
• Buttons
• Switches
• Sliders
• Maps

15. Graphics

16. Glances
• Template Based
• Single Screen
• Not Scrollable
• Read-Only
• Optional

17. Notifications
• Small screens
• Short interactions
• Short & long view
• Can contain user
actions
App
Icon
Title
String
From
Notification
App
Name

18. Modal Sheets
Single Paged

19. Images & Data
• Use local images - load
extremely slow on Bluetooth
• URL Caching / ASync Fetching
• NSUserDefaults for caching data

20. Limitations
• iPhone must have iOS 8.2+
• Small Screens (38mm & 42mm)
• Limited Information
• Short Interactions
• No Health Kit
• No Access to Sensors

21. Developer Opportunities
• Watch Faces
• Custom Notifications
• Device Control
• Health Tracking
• Event Display
• Data Exchange / Social
• Payments / Commerce

22. Thank you!
@jldavid
jldavid@gmail.com