Advanced Segue 2019年のSegue事情

iOSDC Japan 2019 day0 2019/09/05 18:40〜 Track B

Transcript

1. Advanced Segue 2019೥ͷSegueࣄ৘ ॴ ༑ଠ / Yuta Tokoro, iOS & tvOS App Programmer #iOSDC Japan 2019 day0 2019/09/05 18:40ʙ Track B
2. ॴ ༑ଠ / Yuta Tokoro @tokorom tokorom Spinners Inc.
3. ࣭໰ • 1. ͝୲౰ͷΞϓϦͰStoryboardΛ࢖͍ͬͯ·͔͢ʁ • 2. ͝୲౰ͷΞϓϦͰSegueΛ࢖͍ͬͯ·͔͢ʁ
4. Agenda • Basic Segue • iOS 13 New Features! • Advanced Tips •
5. Agenda ✓Basic Segue • iOS 13 New Features! • Advanced Tips •
6. Segue ͱ͸ʁ
7. Segueͱ͸ʁ • Segueͱ͸UIStoryboardSegueͷ͜ͱ • Segue͸StoryboardΛ࢖ͬͨ։ൃ࣌ʹͷΈར༻Մೳ • Segue͸ը໘ભҠͰར༻͢Δ •
8. Segueͱ͸ʁ • Segueͱ͸UIStoryboardSegueͷ͜ͱ • Segue͸StoryboardΛ࢖ͬͨ։ൃ࣌ʹͷΈར༻Մೳ • Segue͸ը໘ભҠͰར༻͢Δ •
9. Segueͷछྨ • Standard SegueʢViewControllerΛ։͘ʣ • Embed SegueʢViewControllerͷೖΕࢠʣ • Unwind SegueʢಛఆͷViewController·ͰḪΔʣ • Custom SegueʢͳΜͰ΋ΞϦʣ •
10. Standard Segue
11. Embed Segue
12. Unwind Segue ViewController ViewController ViewController ViewController ViewController
13. Custom Segue class AwsomeSegue: UIStoryboardSegue { override func perform() { // ͳΜͰ΋ΞϦ } }
14. SegueΛ࢖͏Pros • StoryboardͰ׬݁Ͱ͖Δ෦෼͕૿͑Δ • prepareForSegueͳͲͰҰݩ؅ཧͰ͖Δ • Apple Way͔Β֎Εͳ͍ •
15. Static TableViewͱͷ૬ੑൈ܈
16. Static TableViewͱͷ૬ੑൈ܈
17. prepareForSegue
18. Segueͷछྨ • Standard SegueʢViewControllerΛ։͘ʣ • Embed SegueʢViewControllerͷೖΕࢠʣ • Unwind SegueʢಛఆͷViewController·ͰḪΔʣ • Custom SegueʢͳΜͰ΋ΞϦʣ •
19. prepareForSegue override func prepare(for segue: …) { if let acceptable = segue.destination as? FooAcceptable { if let foo = sender as? Foo { acceptable.accept(foo: foo) } } }
20. viewDidAppear͕ݺ͹Εͳ͍ύλʔϯ
21. viewDidAppear͕ݺ͹Εͳ͍ύλʔϯ override func prepare(for segue: …) { segue.destination.presentationController?.delegate = self } func presentationControllerDidDismiss( _ presentationController: UIPresentationController) { // present͞ΕͨViewController͕ด͡ΒΕͨͷΛݕ஌ }
22. SegueΛ࢖͏Cons • ViewControllerͷinitializerΛࣗ෼Ͱݺ΂ͳ͍ • prepareForSegue͕ෳࡶʹͳΓ͕ͪ •
23. Agenda ✓Basic Segue ✓iOS 13 New Features! • Advanced Tips •
24. SegueΛ࢖͏Cons • ViewControllerͷinitializerΛࣗ෼Ͱݺ΂ͳ͍ • prepareForSegue͕ෳࡶʹͳΓ͕ͪ •
25. ViewControllerʹ஋Λ౉͢ ViewController ViewController Foo
26. override func prepare(for segue: …) { if let acceptable = segue.destination as? FooAcceptable { if let foo = sender as? Foo { acceptable.accept(foo: foo) } } } SegueΛ࢖͏έʔεʢ͜Ε·Ͱʣ
27. override func prepare(for segue: …) { if let acceptable = segue.destination as? FooAcceptable { if let foo = sender as? Foo { acceptable.accept(foo: foo) } } } class FooViewController: UIViewController, FooAcceptable { var foo: Foo! func accept(foo: Foo) { self.foo = foo } } SegueΛ࢖͏έʔεʢ͜Ε·Ͱʣ
28. class FooViewController: UIViewController { let foo: Foo } ͜͏͍ͨ͠
29. Segue Action
30. Segue Action Source Destination
31. Segue Action class SourceViewController: UIViewController { @IBSegueAction func sample1(_ coder: NSCoder) -> UIViewController? { return DestinationViewController(coder: coder, value: 1) } @IBSegueAction func sample2(_ coder: NSCoder) -> UIViewController? { return DestinationViewController(coder: coder, value: 2) } }
32. Segue Action class SourceViewController: UIViewController { @IBSegueAction func sample1(_ coder: NSCoder) -> UIViewController? { return DestinationViewController(coder: coder, value: 1) } @IBSegueAction func sample2(_ coder: NSCoder) -> UIViewController? { return DestinationViewController(coder: coder, value: 2) } }
33. Segue Action
34. Segue Action
35. Segue Action class FooViewController: UIViewController { let value: Int init?(coder: NSCoder, value: Int) { self.value = value super.init(coder: coder) } required init?(coder: NSCoder) { fatalError() } override func viewDidLoad() { // label.textʹvalueΛ୅ೖ } } ☺
36. SegueΛ࢖͏Cons • ViewControllerͷinitializerΛࣗ෼Ͱݺ΂ͳ͍ • prepareForSegue͕ෳࡶʹͳΓ͕ͪ •
37. SegueΛ࢖͏Cons • ViewControllerͷinitializerΛࣗ෼Ͱݺ΂ͳ͍ • prepareForSegue͕ෳࡶʹͳΓ͕ͪ •
38. Segue ࢖ͬͯ΋͍͍ͷͰ͸ʁ
39. Embed Segue + Segue Action
40. Agenda ✓Basic Segue ✓iOS 13 New Features! ✓Advanced Tips •
41. Unwind Segueͷੈք
42. UnwindͰ͖Δઌͷ৚݅ @IBAction func unwindToList(segue: UIStoryboardSegue) { }
43. Ͳ͔͜ΒͰ΋Unwind ViewController ViewController ViewController ViewController ViewController
44. ϊϯίʔυͰUnwind
45. Unwind Segue͸มߋʹڧ͍ ViewController ViewController ViewController ViewController ViewController
46. Unwind Segue͸มߋʹڧ͍ ViewController ViewController ViewController Remove ViewController New
47. ڞ௨ը໘͔ΒͷUnwind ViewController ڞ௨ ViewController ViewController ViewController
48. Unwind Segueͷͦͷଞͷ࢓૊Έ func allowedChildrenForUnwinding(from source: ɹɹUIStoryboardUnwindSegueSource) -> [UIViewController] func childContaining(_ source: ɹɹUIStoryboardUnwindSegueSource) -> UIViewController?
49. Custom Segueͷੈք
50. Storyboardͳ͠Ͱ࢖͑Δʁ
51. Storyboardͳ͠Ͱ࢖͑Δʁ class PresentSegue: UIStoryboardSegue { override func perform() { source.present(destination, animated: true) } } // SegueΛ࢖͏෦෼ let dest = UIViewController() let segue = PresentSegue( identifier: nil, source: self, destination: dest ) segue.perform()
52. Custom Segue͸ ͳΜͰ΋ΞϦ
53. Custom Segue͸ ͳΜͰ΋ΞϦ override func perform() { print(“hello world :)”) }
54. Custom Segue͸ ͳΜͰ΋ΞϦ class XibSegue: UIStoryboardSegue { let nibName: String override func perform() { let nib = UINib(nibName: nibName, bundle: nil) let objects = nib.instantiate(withOwner: nil) for case let dest as UIViewController in objects { source.present(dest, animated: true) break } } init(source: UIViewController, nibName: String) { // লུ } }
55. ΋͏গ࣮͠༻తͳྫ
56. Static TableView͔ΒͷopenURL
57. Static TableView͔ΒͷopenURL
58. Static TableView͔ΒͷopenURL override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { switch indexPath.section { case 2: switch indexPath.row { case 0: openURL(“Helpϖʔδ”) default: break } default: break } }
59. Static TableView͔ΒͷopenURL class OpenURLSegue: UIStoryboardSegue { var url: URL { //লུ } override func perform() { // ؆ུԽ͍ͯ͠·͢ UIApplication.shared.open(url) } }
60. Static TableView͔ΒͷopenURL class OpenURLSegue: UIStoryboardSegue { var url: URL { //লུ } override func perform() { // ؆ུԽ͍ͯ͠·͢ UIApplication.shared.open(url) } } final class OpenHelpPageSegue: OpenURLSegue { override var url: URL { return Constant.helpPageURL } }
61. Static TableView͔ΒͷopenURL OpenHelpPageSegue ☺
62. ڞ௨ͷNavigationControllerͰϥοϓ
63. ڞ௨ͷNavigationControllerͰϥοϓ @IBSegueAction func createFoo(_ coder: NSCoder) -> UIViewController? { return FooViewController(coder: coder, foo: foo) }
64. ڞ௨ͷNavigationControllerͰϥοϓ @IBSegueAction func createFoo(_ coder: NSCoder) -> UIViewController? { let navi = // UINavigationController(coder: coder) ??? let dest = // FooViewController(coder: coder, foo: foo) ??? ????????? }
65. ڞ௨ͷNavigationControllerͰϥοϓ class PresentWithNavigationSegue: UIStoryboardSegue { override func perform() { let navi = // Storyboard͔ΒNavigationControllerΛload navi.viewControllers = [destination] source.present(navi, animated: true) } }
66. ڞ௨ͷNavigationControllerͰϥοϓ ☺
67. ڞ௨ͷNavigationControllerͰϥοϓ ☺ @IBSegueAction func createFoo(_ coder: NSCoder) -> UIViewController? { return FooViewController(coder: coder, foo: foo) }
68. SegueͷՄೳੑ͸ ∞
69. Wrap-Up ✓Segue͸ը໘ભҠ͚ͩͰ͸ͳ͍ ✓iOS 13͔Β͸Segue ActionͰViewControllerͷinitializer Λࣗ෼Ͱݺ΂Δ ✓Custom SegueͰՄೳੑ͸ແݶେ
70. ॴ ༑ଠ / Yuta Tokoro @tokorom tokorom More Information https://www.tokoro.me/
71. Ҿ༻ • https://developer.apple.com/ • WWDC 2019 Videos • https://www.apple.com/