WatchOS2
4 likes1,140 views
The document outlines the features of watchOS 2, including its architecture designed to reduce dependency on iPhone, the introduction of new interface elements, and communication methods for apps. It covers improvements in app interactions through the use of a new API for messaging and complications, as well as the Taptic Engine for haptic feedback. Additional topics include accessibility features, open system URLs, and guidelines for building watch apps.
![Playing Short Audio and
Video Clips
• presentMediaPlayerControllerWithURL(URL:
NSURL, options: [NSObject : AnyObject]?,
completion: (Bool, NSTimeInterval, NSError?) ->
Void)
• dismissMediaPlayerController](https://image.slidesharecdn.com/watchos2-150829060245-lva1-app6891/85/WatchOS2-20-320.jpg)
![Apple Watch Accessibility
• setAccessibilityLabel(accessibilityLabel: String?)
• setAccessibilityHint(accessibilityHint: String?)
• setAccessibilityValue(accessibilityValue: String?)
• setIsAccessibilityElement(isAccessibilityElement: Bool)
• setAccessibilityTraits(accessibilityTraits:
UIAccessibilityTraits)
• setAccessibilityImageRegions(accessibilityImageRegions
: [WKAccessibilityImageRegion])](https://image.slidesharecdn.com/watchos2-150829060245-lva1-app6891/85/WatchOS2-37-320.jpg)
WatchOS2
- 1. Introducing Features of WatchOS 2 Joe 2015/7/17
- 2. Outline • Architecture of WatchOS 2 • A bunch of new interface elements. • Complications. (ClockKit) • Taptic Engine. • Accessibility • Open System URL • Hints of building Watch app
- 4. Architecture of WatchOS 2 (In order to remove the dependency from iPhone)
- 5. Extensions built specifically for watchOS 2 have access to the following system frameworks
- 6. WatchOS 2 provides ways for communicating with iOS app or network • Communicate with network：NSURLSession • Communicate with iOS app：Watch Connectivity
- 7. Watch App communicates with iOS App and vice versa (Watch Connectivity) • Precondition：WCSession.isSupported() • Communication categories • Background transfers • Interactive messaging
- 8. Background transfers • Best when information isn’t needed immediately • Operating system determines the most suitable time to send the data • Content is queued up for transfer
- 9. Three ways of communicating for background transfers • Application Context：Information waiting in a transfer queue will get overridden by the latest data. • User Info Transfer：Information waiting in a transfer queue will deliver one by one in FIFO order.(Like openParentApplication) • File Transfer：Transfer files
- 10. Interactive messaging • Precondition：iOS and watch App must be in reachable state.(They must be connected via Bluetooth) and watch app must be running in the foreground.
- 11. Demo
- 12. API for background transfers • Application Context： • Sender：updateApplicationContext(_:) • Receiver：session(_:didReceiveApplicationContext:) • User Info Transfer： • Sender：transferUserInfo(_:) • Receiver：session(_:didReceiveUserInfo:) • File Transfer： • Sender：transferFile(_:metadata:) • Receiver：session(_:didReceiveFile:) Sender has an instance of WCSession Receiver is instance which implements WCSessionDelegate
- 13. API for interactive messaging • Sender • sendMessage(_:replyHandler: errorHandler:) • sendMessageData(_:replyHandler: errorHandler:) • Receiver • session(_:didReceiveMessage:replyHandler:) • session(_:didReceiveMessageData:replyHandler:)
- 14. A bunch of new interface elements
- 15. A bunch of new interface elements • WKInterfacePicker (Digital crown) • Alerts and Action Sheets • WKInterfaceMovie • WKInterfaceController • Playing Short Audio and Video Clips(Behavior like WKInterfaceMovie) • Recording Short Audio Clips • Animation • WKAudioFilePlayer • Playing Extended Audio Content (It needed to connect a blue tooth headset now)
- 16. Demo
- 17. WKInterfacePicker • A WKInterfacePicker object displays a sequence of items that the user can navigate through using the Digital Crown. • Three types：list、stack、sequence • Advance：Coordinated images
- 18. Alerts and Action Sheets • Alerts and action sheets offer a standard interface for displaying messages to the user.When tapped, the buttons call blocks of code that you provide. • WKInterfaceController： presentAlertControllerWithTitle:message:preferredStyle:acti ons: • WKAlertControllerStyle：Alert, ActionSheet, SideBySideButtonAlert • WKAlertAction：Default, Cancel, Destructive
- 19. WKInterfaceMovie • A WKInterfaceMovie object lets you embed short audio or video clips directly into your interface. • setMovieURL(URL: NSURL) • setVideoGravity(videoGravity: WKVideoGravity) • setLoops(loops: Bool) • setPosterImage(posterImage: WKImage?)
- 20. Playing Short Audio and Video Clips • presentMediaPlayerControllerWithURL(URL: NSURL, options: [NSObject : AnyObject]?, completion: (Bool, NSTimeInterval, NSError?) -> Void) • dismissMediaPlayerController
- 21. Recording Short Audio Clips • presentAudioRecordingControllerWithOutputUR L(URL: NSURL, preset: WKAudioRecordingPreset, maximumDuration: NSTimeInterval, actionTitle: String?, completion: (Bool, NSError?) -> Void) • dismissAudioRecordingController
- 23. Playing Extended Audio Content (WKAudioFilePlayer) • Precondition: It needed to connect a Bluetooth Headset with watch. • WKAudioFilePlayer play WKAudioFilePlayerItem which contains WKAudioFileAsset(URL, title, albumTitle, artist, duration)
- 25. Four ways to show information from your app • Watch app • Glance • Notification • Complication
- 26. Complication
- 27. Timeline ( The data that changes by time)
- 28. CLKComplicationDataSource • getSupportedTimeTravelDirectionsForComplication • getTimelineStartDateForComplication • getTimelineEndDateForComplication • getPrivacyBehaviorForComplication • getCurrentTimelineEntryForComplication • getTimelineEntriesForComplication • getNextRequestedUpdateDateWithHandler • getPlaceholderTemplateForComplication
- 29. CLKComplicationTimelineEntry Different timing (date) corresponding to layout (template)
- 30. A bunch of templates
- 31. Template (Layout of complication) e.g. CLKComplicationTemplateModularLargeStandardBody headerText body2Text body1Text Text is not type of string.
- 32. CLKTextProvider (It is an abstract class) • e.g. shows “Thursday, October 22” on complication by CLKDateTextProvider (truncate automatically) • Thur, October 22 • Thur, Oct 22 • Oct 22 • 22
- 33. Demo
- 34. Taptic Engine
- 35. Provide physical feedback via the Taptic Engine • WKInterfaceDevice.currentDevice().playHaptic(h apticType) • hapticType：Notification, DirectionUp, DirectionDown, Success, Failure, Retry, Start, Stop, Click
- 36. Accessibility
- 37. Apple Watch Accessibility • setAccessibilityLabel(accessibilityLabel: String?) • setAccessibilityHint(accessibilityHint: String?) • setAccessibilityValue(accessibilityValue: String?) • setIsAccessibilityElement(isAccessibilityElement: Bool) • setAccessibilityTraits(accessibilityTraits: UIAccessibilityTraits) • setAccessibilityImageRegions(accessibilityImageRegions : [WKAccessibilityImageRegion])
- 38. Open System URL
- 39. Open System URL • url: • tel: • sms: • mailto: • facetime: • http://maps.apple.com/?daddr=San+Francisco,+CA&saddr=cupertino • http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewAlbum? i=156093464&id=156093462&s=143441 • http://www.youtube.com/v/VIDEO_IDENTIFIER WKExtension.sharedExtension() .openSystemURL(url)
- 40. Hints of building Watch app
- 41. Hints of building Watch app • UI is stored in Watch app • One controller per screen of content • Layout of WatchKit is flow-based layout • Code updates UI from the extension • Manages UI elements through outlets • Uses target-action design pattern • Profile with Instruments
- 42. Reference • https://developer.apple.com/watch/human- interface-guidelines/ • http://www.kristinathai.com/watchos-2-how-to- communicate-between-devices-using-watch- connectivity/ • watchOS 2 Transition Guide • https://github.com/joehsieh/watchOS-2-Sampler
- 43. Q & A