Quick sight on changes between watchos 1 and watchos 2 and describing new features which began available on watchos 2. It was prepared as part of meet-up

1. Apple Watch (part 2)
road to watch OS 2
Alex Rudyak (@alesanro). *instinctools, Hrodna, 2015

2. Contents
● Main differences
● New features

3. Main differences
- changes in app life-cycle
- updating notifications
- data management
- device communications

4. Changes in life-cycle
Extension Delegate

5. Updating notifications
Global and local notifications - handling in
Extension Delegate
Handling depends on if you work with Watch
App or not

6. Data Management
- data placement (“Documents” and “Cache”)
- manual backups
- no integrity with iCloud
- media files

7. Device communication
Watch Connectivity Framework
Basic definition - session (WCSession)

8. Device communication
- update application context (glances)
- user information (complications)
- file transfering
- interactive messaging

9. New features
- availability of new frameworks
(NSULRSession, CoreGraphic and so on)
- UI elements (pickers, movie and audio,
alerts and action sheets)
- keychain availability
- opening external url
- complications

10. Frameworks
Network: Now device can perform own
network requests without help of the phone
device.
Graphics: CoreGraphics availability

11. UI elements - pickers
Just like any other picker presents list of
items +
- navigation with Digital Crown
- coordinate with animations

12. UI elements - movie and audio
WKMovieObject
- playing audio-only, video-only, video +
audio
- record audio

13. UI elements - alerts
Present user-related information
presentAlertControllerWithTitle:message:preferredStyle:actions:

14. Keychain
● SecItemAdd,
● SecItemUpdate,
● SecItemDelete,
● SecItemCopyMatching
use kSecAttrAccessibleWhenUnlocked attribute

15. External URLs
- telephone numbers (tel:)
- texts (sms:)
[[WKExtension sharedExtension] openSystemURL:]

16. Complications

17. Complications

18. Complications
ClockKit framework
Object which implements CLKComplicationDataSource

19. Complications: why shouldn’t use it
● Can you fit your data into the available complication
templates
● Do you already use notifications to convey timely information
to the user
● How much data can you provide in advance

20. Usefull links
1. https://developer.apple.com/library/prerelease/watchos/navigation/
2. https://developer.apple.
com/library/prerelease/watchos/documentation/General/Conceptual/Apple
Watch2TransitionGuide/index.html#//apple_ref/doc/uid/TP40015234
3. https://www.slideshare.net/secret/Kpxw2CAIzaVxRD

21. Thanks for attention!