Practical WatchKit Development (CocoaHeads 04/2015)

Presentation at the April 2015 CocoaHeads meeting in Berlin http://www.meetup.com/Cocoaheads-Berlin/events/221308573/

Transcript

1. Practical WatchKit Development @claushoefele
3. WatchKit App WatchKit Extension iOS App WatchKit App vs Extension
6. class TripDetailInterfaceController: WKInterfaceController { @IBOutlet private weak var map: WKInterfaceMap! override func awakeWithContext(context: AnyObject?) { super.awakeWithContext(context) ... } override func willActivate() { super.willActivate() ... } }
7. map.addAnnotation(coordinate, withPinColor: .Red) let coordinateRegion = MKCoordinateRegionMakeWithDistance[...] map.setRegion(coordinateRegion)
8. Tables
9. Paging
10. Interactive Notifications
11. Hides when loading
12. Bezel WatchSim
13. • Storyboards • WKInterfaceController • Optimizations • Tools User Interface
14. WatchKit App WatchKit Extension Requesting Data
15. WatchKit App WatchKit Extension iOS App Requesting Data
16. private func callParentApp() { let userInfo = ["input": "data"] WKInterfaceController.openParentApplication(userInfo) { replyInfo, error in println("reply \(replyInfo)") } }
17. private func callParentApp() { let userInfo = ["input": "data"] WKInterfaceController.openParentApplication(userInfo) { replyInfo, error in println("reply \(replyInfo)") } } func application(application: UIApplication!, handleWatchKitExtensionRequest userInfo: [NSObject : AnyObject]!, reply: (([NSObject : AnyObject]!) -> Void)!)
18. Handoff
19. WatchKit Extension iOS App Sharing Data
21. let defaults = NSUserDefaults(suiteName: "group.com.claushoefele.T")! func updateObjectForKey<T: NSCoding>(key: String, item: T) { let data = NSKeyedArchiver.archivedDataWithRootObject(item) defaults.setObject(data, forKey: key) }
22. WatchKit Extension iOS App Signalling
23. func sendDarwinNotification(identifier: String) { let darwinNotificationCenter = CFNotificationCenterGetDarwinNotifyCenter() CFNotificationCenterPostNotification(darwinNotificationCenter, identifier, nil, nil, 1); } CFNotificationCenterAddObserver
24. Data Sync
25. • Execute in background • Handoff • Share data • Signal changes Handling data
26. “A WatchKit app complements your iOS app; it does not replace it.” –Apple Watch HIG
27. “Anything that could show the user a progress spinner (however briefly) is a failure on my part.” –David Smith
28. “Does a wearable mean data intrudes even more into your life, or do the constraints (screen size etc) act as a filter to reduce overload?” –Bendict Evans
29. Practical WatchKit Development @claushoefele