WatchKit @ Betabeers PMI

WatchKit @ Betabeers PMI 29/01/2015

Transcript

1. Build an app for WATCH With WatchKit and Swift
2. Álvaro Medina Ballester Mobile developer @ APSL.net @alvaromb
3. Álvaro Medina Ballester Built Hoods app, Beezer & contributed to other projects github.com/alvaromb
4. APSL Advanced Programming Solutions apsl.net
5. APSL Advanced Programming Solutions apsl.net » Python(!)/Django company » Free software » Mobile apps » IT solutions » I+D
6. Before starting
7. Tools needed » Mac/PC with OS X » Apple Developer Membership » !
8. Basic Knowledge » OOP » MVC » JSON
10. WATCH
12. WATCH Architecture
13. WATCH Architecture Created as an extension of an iPhone app
14. WATCH Architecture 3 opportunities » App » Glance » Notifications
15. App split in two: WatchKit App and WatchKit extension
16. WatchKit extension Represents the app code. Resides and executes inside the iPhone app. WatchKit app Represents the app storyboard, UI and static content. Resides inside the WATCH.
17. Architecture
18. Architecture » Code executes in iPhone app through WatchKit extension. » WatchKit app only handles UI and storyboard. » App is developed using WatchKit Framework.
19. WatchKit Framework » Contains the classes that WatchKit extensions uses. » Most important classes for this demo: WKInterfaceController, WKInterfaceTable, WKInterfaceLabel.
20. WKInterfaceController View controller main class. Only one controller per screen. Target-action design pattern. Handles controller lifecycle: awakeWithContext, willActivate, didDeactivate. WKInterfaceTable Can display dynamic content. Needs row controller object to define row content.
21. Demo: EMT app
22. Demo: EMT app » A better app for the EMT bus service. » Will let you know when the next bus will arrive.
23. SHOW ME THE CODE
24. Quick note about swift optionals
25. Swift optionals » Optionals can have two states, value or nil. » Whenever a function may return a nil value, the compiler will force you to check for it. let str: String // non-optional let optionalStr: String? // optional
26. Swift optionals func someFunction(param: String) -> String? { if param == "betabeers" { return "Cool!" } return nil } let str = someFunction("beer").substringToIndex(4)
29. Swift optionals func someFunction(param: String) -> String? { if param == "betabeers" { return "Cool!" } return nil } // Unwrap value if let str = someFunction("beers") as? String { // }
30. Back to the demo
31. WatchKit apps works with iPhone apps only !
32. NO
33. Take a closer look
34. Conclusions » As with mobile, wereables are a different world » Can be a good complement to your app » Knowing iOS/Android development is necessary » Still not complete WatchKit SDK
35. Code » https://github.com/alvaromb/wk-demo-bb
36. Questions?
37. We're hiring
38. APSL
39. APSL Advanced Programming Solutions apsl.net Send your CV to aaloy@apsl.net
40. Thanks!
41. References » Create a table with WatchKit » WatchKit reference » WatchKit programming guide » WatchKit Framework reference » Mike Ash' friday Q&A: Interesting Swift Features » Swift programming guide » Optionals made simple