Apple Watch (part 2)road to watch OS 2

Alex Rudyak (@alesanro). *instinctools, Hrodna, 2015

Contents

● Main differences

● New features

Main differences

- changes in app life-cycle

- updating notifications

- data management

- device communications

Changes in life-cycle

Extension Delegate

Updating notifications

Global and local notifications - handling in

Extension Delegate

Handling depends on if you work with Watch

App or not

Data Management

- data placement (“Documents” and “Cache”)

- manual backups

- no integrity with iCloud

- media files

Device communication

Watch Connectivity Framework

Basic definition - session (WCSession)

Device communication

- update application context (glances)

- user information (complications)

- file transfering

- interactive messaging

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

Frameworks

Network: Now device can perform own

network requests without help of the phone

device.

Graphics: CoreGraphics availability

UI elements - pickers

Just like any other picker presents list of

items +

- navigation with Digital Crown

- coordinate with animations

UI elements - movie and audio

WKMovieObject

- playing audio-only, video-only, video +

audio

- record audio

UI elements - alerts

Present user-related information

presentAlertControllerWithTitle:message:preferredStyle:actions:

Keychain

● SecItemAdd,● SecItemUpdate, ● SecItemDelete, ● SecItemCopyMatching

use kSecAttrAccessibleWhenUnlocked attribute

External URLs

- telephone numbers (tel:)

- texts (sms:)

[[WKExtension sharedExtension] openSystemURL:]

Complications

Complications

Complications

ClockKit framework

Object which implements CLKComplicationDataSource

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

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

Thanks for attention!