iOS Extension

Cocoaheads Taipei 11/13

Transcript

1. iOS Extension Prince
2. ⺩王品⼠士 (Prince) @wpsteak
3. • App Extensions • Today Widget & Demo
6. App
7. App Folder Badge
8. Scenario 1
9. Edit a photo Photo Home Find App Wait App Open Find Photo Edit Photo
10. Edit a photo Photo Select App Edit Photo Photo Editing Extension
11. Scenario 2
12. See scores from your favorite team Home Find App Wait App Open wait for loading Auto upload Rate me Cache Sync 8:1
13. See scores from your favorite team Home 8:1 Today Extension Widget
14. How an App Extension Works
15. Open URL Shared Resources App
 extension Host
 app Containing
 app Request Response
16. App
 extension Host
 app Containing
 app
17. Host app • An app that a user employs to choose an app extension is called a host app Host
 app Today.app Today Chrome.app Share/Action Dropbox.app Document Provider Photo.app Photo Editing
18. • an app that contains one or more extensions is called a containing app Containing app Containing
 app extension extension extension
19. • an app that contains one or more extensions is called a containing app Containing app
20. App extension • an app extension lets you extend custom functionality and content beyond App
 extension
21. App extension • an app extension lets you extend custom functionality and content beyond
22. Today Extension
23. Today Extension
24. Today Extension
25. Today Extension
26. Today Extension
27. Dropbox TodayView Today.app How an App Extension Communicates
28. Dropbox TodayView Today.app Database How an App Extension Communicates
29. Dropbox.app Dropbox TodayView Today.app Open URL Database How an App Extension Communicates
30. Open URL Shared Resources App
 extension Host
 app Containing
 app How an App Extension Communicates
31. Share Extension
32. Share Extension
33. Share Extension
34. Share Extension
35. Share Extension
36. App
 extension Host
 app Containing
 app Pocket AddToPocket Chrome Server
37. App
 extension Host
 app AddToPocket Chrome
38. Accessed via Apple frameworks code App
 extension Host
 app System Framework
39. App
 extension Host
 app AddToPocket Chrome UIActivityViewController SLComposeServiceViewController Accessed via Apple frameworks code
40. Extension Type Host App host app use Today Today.app NotificationCenter.framework Share any app UIActivityViewController Action any app UIActivityViewController Photo Editing Photo.app PhotosUI.framework
 Photos.framework Document Provider any app UIDocumentPickerViewController Custom Keyboard any app Host
 app
41. Extension Type Enter point Today UIViewController <NCWidgetProviding> Share SLComposeServiceViewController Action SLComposeServiceViewController UI and non-UI variants Photo Editing UIViewController <PHContentEditingController> Document Provider UIDocumentPickerViewController UI and non-UI variants Custom Keyboard UIInputViewController App
 extension
42. App
 extension Host
 app Containing
 app Pocket AddToPocket Chrome Server
43. App
 extension Containing
 app Pocket AddToPocket Different process • Isolated address space • Executes independently • System optimizes separately Run Separately
44. App
 extension Containing
 app Shared Resources Share Resource App Group • UserDefault • FileManager
45. Share Resource NSUserDefaults *shared = [[NSUserDefaults alloc] initWithSuiteName:@“group.domain"]; NSURL *directory = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:@"group.domain"];
46. App
 extension Containing
 app Pocket AddToPocket Server Server • Same data model • Same logic • Same views Share Code
47. App
 extension Containing
 app Pocket AddToPocket Server Server • Framework • Static library Share Code
48. Share Code NSURL *containerURL = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:@"group.domain"]; NSString *sorPath = [NSString stringWithFormat:@"%@/Dylib.framework",[[NSBundle mainBundle] bundlePath]]; NSString *desPath = [NSString stringWithFormat:@“%@/Library/Caches/ Dylib.framework",containerURL.path]; BOOL copyResult = [[NSFileManager defaultManager] copyItemAtPath: sorPath toPath:desPath error:&err];
49. • Containing app is still most important • Extension cannot without containing app • Don't have full use of system resources • Make it seamless • Make it useful
50. Demo
51. Demo • a light bulb • sample code • Wifi Environment
52. App Extension • Create an app extension by adding a new target to an app • Add necessary libraries to extension target • ViewController
53. Load View • with storyboard • NSExtensionMainStoryboard • without interface file • NSExtensionPrincipalClass
54. viewController’s life cycle • initWithCoder: • viewDidLoad • widgetMarginInsetsForProposedMarginInsets: • widgetPerformUpdateWithCompletionHandler: • viewWillAppear: • viewDidAppear:
55. • widgetMarginInsetsForProposedMarginInsets
56. User Interface • UIView • UIButton • UILabel • UITextField • UIScrollView
57. Some APIs are Unavailable to App Extensions • Access a sharedApplication object • Use any API marked in header files with the NS_EXTENSION_UNAVAILABLE macro, or similar unavailability macro, or any API in an unavailable framework • Access the camera or microphone on an iOS device • Perform long-running background tasks • The specifics of this limitation vary by platform, as described in the extension point chapters in this document. • (An app extension can initiate uploads or downloads using an NSURLSession object, with results of those operations reported to the containing app.) • Receive data using AirDrop • (An app extension can send data using AirDrop in the same way an app does: by employing the UIActivityViewController class.)
58. App Store • NOTE ABOUT 64-BIT ARCHITECTURE • An app extension target must include the arm64 (iOS) or x86_64 architecture (OS X) in its Architectures build settings or it will be rejected by the App Store. Xcode includes the appropriate 64-bit architecture with its “Standard architectures” setting when you create a new app extension target. • If your containing app target links to an embedded framework, the app must also include 64-bit architecture or it will be rejected by the App Store.
59. App Store
60. End