watchOS 2

Apple Watch

• a watch

• app extension(s) on your watch

Apple Watch• the minimum of an app with apple watch

• app

• watch app

• watch app extension

• 3 separate app id

Apple Watch

• watch app

• layout

• watch app extension

• logic

watchOS 1 vs watchOS 2

watchOS 1 vs watchOS 2• iPhone <-> Apple Watch

• watchOS 1

• os handled

• + [openParentApplication:reply:]

• watchOS 2

• Watch Connectivity Framework

Watch Connectivity

• background transfer

• application context

• user info

• file

Watch Connectivity• message

• immediate

• requires reachable

• iPhone -> watch: BT connected + watch app foreground

• watch -> iPhone: BT connected

Watch Connectivitybackground transfer vs message

Watch Connectivity

• see : apple doc

• see : http://www.kristinathai.com/watchos-2-how-to-communicate-between-devices-using-watch-connectivity/

Complications

watchOS 2• time travel

• animation

• alpha

• width / height

• vertical / horizontal alignment

• background color

• layout group insets

• more access to the hardware

• new interface objects - WKInterfacePicker -> Digital Crown

• see: apple doc or http://www.raywenderlich.com/108415/watchkit-for-watchos-2

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