1. WATCH
What might it be good for, and how might we use it?
Carl Brown,
CocoaCoder.org
November 13, 2014
@CarlBrwn
@CocoaCoder

2. GET READY TO FIT IN
The race is about to Start!

3. SDK SHOULD DROP THIS MONTH
But what’s in it?

4. KREMLINOLOGY
“… to examine the smallest minutiae to learn what was happening inside
the walls of [a closed system]”
c.f. http://www.imore.com/nsfw-september-apple-event-kremlinology-and-blind-luck

5. NOTABLE KREMLINOLOGIST @_DAVIDSMITH
http://david-smith.org/blog/2014/11/06/expectations-for-watchkit/
http://developingperspective.com/2014/10/31/201/

6. WATCH — DEVELOPER VIEW
• With Apple Watch, developers can create WatchKit apps with
actionable notifications and Glances that provide timely
information.
• Starting later next year, developers will be able to create fully
native apps for Apple Watch.
http://www.apple.com/pr/library/2014/09/09Apple-Unveils-Apple-Watch-Apples-Most-Personal-Device-Ever.html

7. ACTIONABLE NOTIFICATIONS
Notifications present the user with options

8. LOOK FAMILIAR?
That looks an awful lot like iOS8 interactive notifications…

9. PRE-WATCH
NOTIFICATIONS
•BTLE Profile based
•One-way
•Pebble Watch, et. al.
https://developer.apple.com/library/ios/documentation/CoreBluetooth/Reference/AppleNotificationCenterServiceSpecification/Introduction/Introduction.html

10. PRE-WATCH NOTIFICATIONS
OLD AND BUSTED
https://developer.apple.com/library/ios/documentation/CoreBluetooth/Reference/AppleNotificationCenterServiceSpecification/Introduction/Introduction.html

11. ACTIONABLE NOTIFICATIONS
The new Hotness

12. GLANCES
Swipe from Bottom to Open
Side to Side to Switch Between

13. DÉJÀ VU?
Glances act like Today Screen Widgets, don’t you think?

14. POSTULATED:
WATCH Actionable Notifications and Glances will be implemented in
WatchKit similarly to iOS8 Notifications and Widgets

15. ACTIONABLE NOTIFICATIONS
How might you create one?

16. CREATING NEW NOTIFICATIONS
let firstAction = UIMutableUserNotificationAction()
firstAction.identifier = Actions.first.rawValue
firstAction.title = "FIRST"
firstAction.activationMode = UIUserNotificationActivationMode.Background
firstAction.authenticationRequired = true
firstAction.destructive = false
let notificationCategory = UIMutableUserNotificationCategory()
notificationCategory.identifier = categoryID
!
notificationCategory.setActions([firstAction, secondAction, resetAction],
forContext: UIUserNotificationActionContext.Default)
let types = UIUserNotificationType.Alert | UIUserNotificationType.Sound
let settings = UIUserNotificationSettings(forTypes: types,
categories: NSSet(object: notificationCategory))
!
UIApplication.sharedApplication().registerUserNotificationSettings(settings)

17. SENDING NEW NOTIFICATIONS
let notification = UILocalNotification()
notification.alertBody = “Text Here"
notification.soundName = UILocalNotificationDefaultSoundName
notification.fireDate = NSDate()
notification.category = categoryID
UIApplication.sharedApplication().scheduleLocalNotification(notification)

18. HANDLING NEW NOTIFICATIONS
func application(application: UIApplication,
handleActionWithIdentifier identifier: String?,
forLocalNotification notification: UILocalNotification,
completionHandler: () -> Void) {
if notification.category == categoryID {
let action:Actions = Actions(rawValue: identifier!)!
switch action{
case Actions.first:
doStuff()
case Actions.cancel:
cancelStuff()
}
}
completionHandler()
}

19. GLANCES
How might you create one?

20. CREATING GLANCES/WIDGETS

21. CONFIGURING GLANCES/WIDGETS

22. IMPLEMENTING GLANCES/WIDGETS
class TodayViewController: UIViewController, NCWidgetProviding {
override func viewDidLoad() {}
override func viewDidAppear(animated: Bool) {}
override func viewDidLayoutSubviews() {}
}
• Must use Auto layout
• Use setPreferredContentSize:

23. UPDATING GLANCES/WIDGETS
func widgetPerformUpdateWithCompletionHandler(
completionHandler: ((NCUpdateResult) -> Void)!) {
doStuff { error in
if error == nil {
self.update()
completionHandler(.NewData)
} else {
completionHandler(.NoData)
}
}
}

24. RESIZING WIDGETS
override func viewWillTransitionToSize(size: CGSize,
withTransitionCoordinator coordinator: UIViewControllerTransitionCoordinator) {
coordinator.animateAlongsideTransition({
(context: UIViewControllerTransitionCoordinatorContext!) -> Void in
self.preferredContentSize = size;
}, completion: {
(context: UIViewControllerTransitionCoordinatorContext!) -> Void in
self.view.alpha = 1.0
})
}

25. UNANSWERED QUESTIONS
• Will we be able to access to sensor info (accelerometer, etc) in this month’s SDK?
• How does your app know if there’s a connected watch?
• Will the same code get called for NotificationCenter and WATCH by default?
• Will Apple allow “WATCH Required” apps in January or will your app have to
function without one?
• How long before WatchKit apps can be submitted for review?

26. SO WHAT’S A
GOOD USE FOR A
GLANCE?
Good Question.
!
Guessing there will be some risk.
!
Thoughts?
http://techcrunch.com/2014/10/30/apple-no-longer-rejecting-calculator-widgets-from-the-app-store/

27. SO WHAT’S A
GOOD USE FOR A
GLANCE?
Good Question.
!
Guessing there will be some risk.
!
Thoughts?
http://www.tuaw.com/2014/11/12/overglide-is-a-game-for-your-ios-notification-screen/

28. N.F.W. — JUST DON’T
A Plea on behalf of your users
http://www.campaignlive.com/article/apple-watch-its-time-new-ad-designs/1321477

29. CONSIDER THIS
A Plea on behalf of your potential users
http://www.wired.com/2014/11/where-fitness-trackers-fail/

30. FURTHER RESOURCES
• http://david-smith.org/blog/2014/11/06/expectations-for-watchkit/
• http://www.thinkandbuild.it/interactive-notifications-with-notification-actions/
• WWDC 2014 Session 205: Creating Extensions for iOS and OS X, Part 1
• http://www.raywenderlich.com/83809/ios-8-today-extension-tutorial
• http://www.mutualmobile.com/posts/apple-watch-apps-want-to-write
• http://www.wired.com/2014/11/where-fitness-trackers-fail/
• http://keynotopia.com/apple-watch-ui-kit/
• https://developer.apple.com/library/ios/documentation/CoreBluetooth/Reference/
AppleNotificationCenterServiceSpecification/Introduction/Introduction.html