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Building watchOS apps
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Boris Bügling
July 13, 2015
Programming
2
210
Building watchOS apps
An introduction to building watchOS apps, given at Mobile Optimized 2015 in Minsk.
Boris Bügling
July 13, 2015
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Transcript
BUILDING WATCHOS APPS MOBILEOPTIMIZED 2015 BORIS BÜGLING - @NEONACHO
COCOAPODS
CONTENTFUL
None
!!!!
ᴡᴀᴛᴄʜ
WATCHOS 1.X ▸ Notifications ▸ Glances ▸ WatchKit apps
NOTIFICATIONS
GLANCES
WATCHKIT
WATCHOS 2.X ▸ Apps run natively on the watch ▸
Custom complications
!!!
None
COMPLICATIONS
ARCHITECTURE
None
WATCHOS 2 Extension phone => watch
RESOURCES ▸ Interface.storyboard ▸ Asset catalogs
EXTENSION DELEGATE class ExtensionDelegate: NSObject, WKExtensionDelegate { func applicationDidFinishLaunching() {
} func applicationDidBecomeActive() { } func applicationWillResignActive() { } }
INTERFACE CONTROLLER class InterfaceController: WKInterfaceController { override func awakeWithContext(context: AnyObject?)
{ super.awakeWithContext(context) } override func willActivate() { super.willActivate() } override func didDeactivate() { super.didDeactivate() } }
WKINTERFACECONTROLLER ▸ Navigation ▸ Presentation ▸ Handoff ▸ Handle notification
actions ▸ Communicate with parent app
DESIGN
If you measure interactions with your iOS app in minutes,
you can expect interactions with your Watch app to be measured in seconds.
PRINCIPLES ▸ Lightweight interactions ▸ Holistic design ▸ Personal communication
LAYOUT ▸ based on horizontal or vertical groups ▸ very
similar to UIStackView ▸ two device sizes (38mm and 42mm) ▸ edge-to-edge, bezel provides margins
None
SOME EXAMPLES
None
None
None
None
None
BUILDING A SIMPLE APP
None
WATCHPRESENTER ▸ Remote controls Deckset instead ▸ Direct connection to
the Mac ▸ Shows a preview of the slides ▸ Measures heartrate to display the "most exciting" slide ▸ Taps you if you're running out of time
MULTIPEER CONNECTIVITY!
AVAILABLE FRAMEWORKS
CFNetwork.framework ClockKit.framework Contacts.framework CoreData.framework CoreFoundation.framework CoreGraphics.framework CoreLocation.framework CoreMotion.framework EventKit.framework Foundation.framework
HealthKit.framework HomeKit.framework ImageIO.framework MapKit.framework MobileCoreServices.framework PassKit.framework Security.framework UIKit.framework WatchConnectivity.framework WatchKit.framework
BT APIS ARE PRIVATE :(
OTHER OPTIONS ▸ NSURLSession via Wi-Fi ▸ WatchConnectivity.framework to talk
via the phone
HEALTHKIT.FRAMEWORK let anchorValue = Int(HKAnchoredObjectQueryNoAnchor) let sampleType = HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierHeartRate) let
heartRateQuery = HKAnchoredObjectQuery(type: sampleType!, predicate: nil, anchor: anchorValue, limit: 0) { (query, sampleObjects, deletedObjects, newAnchor, error) -> Void in guard let heartRateSamples = sampleObjects as?[HKQuantitySample] else {return} let sample = heartRateSamples.first let value = sample!.quantity.doubleValueForUnit(self.heartRateUnit) print(value) } heartRateQuery.updateHandler = // ...
None
HEALTHKIT.FRAMEWORK ▸ not usable in the Watch simulator
TAPTIC ENGINE typedef NS_ENUM(NSInteger, WKHapticType) { WKHapticTypeNotification, WKHapticTypeDirectionUp, WKHapticTypeDirectionDown, WKHapticTypeSuccess,
WKHapticTypeFailure, WKHapticTypeRetry, WKHapticTypeStart, WKHapticTypeStop, WKHapticTypeClick } WK_AVAILABLE_WATCHOS_ONLY(2.0); WKInterfaceDevice.currentDevice().playHaptic(.Start)
BUT ALSO NOT USABLE IN THE SIM
SPOTIFY REMOTE
DEMO
None
None
None
TIPS
printf DEBUGGING IS GREAT!
MMWORMHOLE ▸ watchOS 1.0: CFNotificationCenter ▸ watchOS 2.0: WatchConnectivity.framework
FORCE QUIT APPS ▸ Long press until "reboot" menu ▸
Long press again
IF IN DOUBT, REBOOT THE WATCH :)
WHAT HAVE WE LEARNED? ▸ Code isn't very different from
iOS apps ▸ But design very much is ▸ Rethink your app for the watch, don't port it ▸ If you can't - maybe you don't need a watch app
Don’t be afraid to not ship. @orta
THANK YOU!
▸ https://developer.apple.com/watch/human-interface-guidelines/ ▸ https://developer.apple.com/library/prerelease/watchos/ documentation/General/Conceptual/AppleWatch2TransitionGuide/ ▸ https://github.com/shu223/watchOS-2-Sampler ▸ http://www.kristinathai.com/category/watchkit/ ▸
https://realm.io/news/watchkit-mistakes/
@NeoNacho
[email protected]
http://buegling.com/talks