This document provides an overview of Apple Watch app development including: - The architecture of a WatchKit app and extension, how they communicate, and their life cycles. - Key Apple Watch interfaces like Glances and Notifications that apps can provide. - UI elements available in WatchKit like labels, menus, and maps. - Techniques for passing data between the Watch and iOS apps using handoff and context.

1. Apple Watch
Your first application
iOS Practice Leaders
Alexey Chulochnikov

2. Agenda
• Watch App architecture
• Apple watch interfaces
• Initial impressions

3. WatchKit App and extension
communication
Apple Watch
WatchKit App
WatchKit
Storyboard
Resources
iPhone
WatchKit Extension
WatchKit
Code
Resources

4. WatchKit App Life Cycle

5. Launching a WatchKit app
Load initial
interface
Launch
WatchKit app
Initialize UI Display UI
Storyboard
Interface controller
init willActivat
awakeWithContex
watchKit
extensio
n

6. Interface controllers
life cycle
Display UI
User interacts
with UI
User stops
interacting
willActivate
various action
methods didDeactivate
Suspend
extension
Interface controller

7. UI elements

8. Groups

9. Maps

10. Date & Timer Labels

11. Menus

12. App Components

13. Glances

14. Notifications
Short looks

15. Notifications
Long looks

16. WatchKit to iOS

17. iOS to WatchKit

18. Adding Handoff to the Glance
inform WatchKit that there’s a user activity is going on
Handle user activity

19. Passing Segue Data

20. Receiving Context Data

21. More information
WatchKit App Architecture
http://bit.ly/watchKit_app_architecture
App Components
http://bit.ly/app_components
UI Elements
http://bit.ly/ui_elements
HipChat
http://bit.ly/ciklum_apple_watch
BitBucket
https://bitbucket.org/WooD1k/watchcurrency
Slides
http://bit.ly/ciklum_watch_slides