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Advanced Segue
2019ͷSegueࣄ
ॴ ༑ଠ / Yuta Tokoro, iOS & tvOS App Programmer
#iOSDC Japan 2019
day0 2019/09/05 18:40ʙ Track B
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ॴ ༑ଠ / Yuta Tokoro
@tokorom tokorom
Spinners Inc.
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࣭
• 1. ͝୲ͷΞϓϦͰStoryboardΛ͍ͬͯ·͔͢ʁ
• 2. ͝୲ͷΞϓϦͰSegueΛ͍ͬͯ·͔͢ʁ
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Agenda
• Basic Segue
• iOS 13 New Features!
• Advanced Tips
•
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Agenda
✓Basic Segue
• iOS 13 New Features!
• Advanced Tips
•
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Segue
ͱʁ
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Segueͱʁ
• SegueͱUIStoryboardSegueͷ͜ͱ
• SegueStoryboardΛͬͨ։ൃ࣌ʹͷΈར༻Մೳ
• Segueը໘ભҠͰར༻͢Δ
•
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Segueͱʁ
• SegueͱUIStoryboardSegueͷ͜ͱ
• SegueStoryboardΛͬͨ։ൃ࣌ʹͷΈར༻Մೳ
• Segueը໘ભҠͰར༻͢Δ
•
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Segueͷछྨ
• Standard SegueʢViewControllerΛ։͘ʣ
• Embed SegueʢViewControllerͷೖΕࢠʣ
• Unwind SegueʢಛఆͷViewController·ͰḪΔʣ
• Custom SegueʢͳΜͰΞϦʣ
•
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Standard Segue
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Embed Segue
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Unwind Segue
ViewController
ViewController
ViewController ViewController ViewController
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Custom Segue
class AwsomeSegue: UIStoryboardSegue {
override func perform() {
// ͳΜͰΞϦ
}
}
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SegueΛ͏Pros
• StoryboardͰ݁Ͱ͖Δ෦͕૿͑Δ
• prepareForSegueͳͲͰҰݩཧͰ͖Δ
• Apple Way͔Β֎Εͳ͍
•
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Static TableViewͱͷ૬ੑൈ܈
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Static TableViewͱͷ૬ੑൈ܈
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prepareForSegue
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Segueͷछྨ
• Standard SegueʢViewControllerΛ։͘ʣ
• Embed SegueʢViewControllerͷೖΕࢠʣ
• Unwind SegueʢಛఆͷViewController·ͰḪΔʣ
• Custom SegueʢͳΜͰΞϦʣ
•
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prepareForSegue
override func prepare(for segue: …) {
if let acceptable = segue.destination as? FooAcceptable {
if let foo = sender as? Foo {
acceptable.accept(foo: foo)
}
}
}
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viewDidAppear͕ݺΕͳ͍ύλʔϯ
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viewDidAppear͕ݺΕͳ͍ύλʔϯ
override func prepare(for segue: …) {
segue.destination.presentationController?.delegate = self
}
func presentationControllerDidDismiss(
_ presentationController: UIPresentationController) {
// present͞ΕͨViewController͕ด͡ΒΕͨͷΛݕ
}
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SegueΛ͏Cons
• ViewControllerͷinitializerΛࣗͰݺͳ͍
• prepareForSegue͕ෳࡶʹͳΓ͕ͪ
•
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Agenda
✓Basic Segue
✓iOS 13 New Features!
• Advanced Tips
•
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SegueΛ͏Cons
• ViewControllerͷinitializerΛࣗͰݺͳ͍
• prepareForSegue͕ෳࡶʹͳΓ͕ͪ
•
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ViewControllerʹΛ͢
ViewController ViewController
Foo
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override func prepare(for segue: …) {
if let acceptable = segue.destination as? FooAcceptable {
if let foo = sender as? Foo {
acceptable.accept(foo: foo)
}
}
}
SegueΛ͏έʔεʢ͜Ε·Ͱʣ
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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
}
}
SegueΛ͏έʔεʢ͜Ε·Ͱʣ
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class FooViewController: UIViewController {
let foo: Foo
}
͜͏͍ͨ͠
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Segue Action
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Segue Action
Source Destination
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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)
}
}
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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)
}
}
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Segue Action
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Segue Action
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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.textʹvalueΛೖ
}
}
☺
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SegueΛ͏Cons
• ViewControllerͷinitializerΛࣗͰݺͳ͍
• prepareForSegue͕ෳࡶʹͳΓ͕ͪ
•
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SegueΛ͏Cons
• ViewControllerͷinitializerΛࣗͰݺͳ͍
• prepareForSegue͕ෳࡶʹͳΓ͕ͪ
•
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Segue
͍͍ͬͯͷͰʁ
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Embed Segue + Segue Action
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Agenda
✓Basic Segue
✓iOS 13 New Features!
✓Advanced Tips
•
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Unwind Segueͷੈք
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UnwindͰ͖Δઌͷ݅
@IBAction
func unwindToList(segue: UIStoryboardSegue) {
}
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Ͳ͔͜ΒͰUnwind
ViewController
ViewController
ViewController ViewController ViewController
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ϊϯίʔυͰUnwind
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Unwind Segueมߋʹڧ͍
ViewController
ViewController
ViewController ViewController ViewController
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Unwind Segueมߋʹڧ͍
ViewController
ViewController
ViewController Remove ViewController
New
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ڞ௨ը໘͔ΒͷUnwind
ViewController
ڞ௨
ViewController ViewController
ViewController
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Unwind SegueͷͦͷଞͷΈ
func allowedChildrenForUnwinding(from source:
ɹɹUIStoryboardUnwindSegueSource) -> [UIViewController]
func childContaining(_ source:
ɹɹUIStoryboardUnwindSegueSource) -> UIViewController?
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Custom Segueͷੈք
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Storyboardͳ͠Ͱ͑Δʁ
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Storyboardͳ͠Ͱ͑Δʁ
class PresentSegue: UIStoryboardSegue {
override func perform() {
source.present(destination, animated: true)
}
}
// SegueΛ͏෦
let dest = UIViewController()
let segue = PresentSegue(
identifier: nil,
source: self,
destination: dest
)
segue.perform()
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Custom Segue ͳΜͰΞϦ
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Custom Segue ͳΜͰΞϦ
override func perform() {
print(“hello world :)”)
}
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Custom Segue ͳΜͰΞϦ
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
}
}
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͏গ࣮͠༻తͳྫ
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Static TableView͔ΒͷopenURL
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Static TableView͔ΒͷopenURL
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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
}
}
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Static TableView͔ΒͷopenURL
class OpenURLSegue: UIStoryboardSegue {
var url: URL { //লུ }
override func perform() {
// ؆ུԽ͍ͯ͠·͢
UIApplication.shared.open(url)
}
}
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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
}
}
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Static TableView͔ΒͷopenURL
OpenHelpPageSegue
☺
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ڞ௨ͷNavigationControllerͰϥοϓ
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ڞ௨ͷNavigationControllerͰϥοϓ
@IBSegueAction
func createFoo(_ coder: NSCoder) -> UIViewController? {
return FooViewController(coder: coder, foo: foo)
}
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ڞ௨ͷNavigationControllerͰϥοϓ
@IBSegueAction
func createFoo(_ coder: NSCoder) -> UIViewController? {
let navi = // UINavigationController(coder: coder) ???
let dest = // FooViewController(coder: coder, foo: foo) ???
?????????
}
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ڞ௨ͷNavigationControllerͰϥοϓ
class PresentWithNavigationSegue: UIStoryboardSegue {
override func perform() {
let navi = // Storyboard͔ΒNavigationControllerΛload
navi.viewControllers = [destination]
source.present(navi, animated: true)
}
}
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ڞ௨ͷNavigationControllerͰϥοϓ
☺
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ڞ௨ͷNavigationControllerͰϥοϓ
☺
@IBSegueAction
func createFoo(_ coder: NSCoder) -> UIViewController? {
return FooViewController(coder: coder, foo: foo)
}
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SegueͷՄೳੑ
∞
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Wrap-Up
✓Segueը໘ભҠ͚ͩͰͳ͍
✓iOS 13͔ΒSegue ActionͰViewControllerͷinitializer
ΛࣗͰݺΔ
✓Custom SegueͰՄೳੑແݶେ
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ॴ ༑ଠ / Yuta Tokoro
@tokorom tokorom
More Information
https://www.tokoro.me/
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Ҿ༻
• https://developer.apple.com/
• WWDC 2019 Videos
• https://www.apple.com/