古き良きsendAction (in potatotips #26)

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   ݹ͖ྑ͖ sendAction ॴ ༑ଠ @tokorom iOS App Programer potatotips-26

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   ॴ
   ༑ଠ
   @tokorom (ϑϦʔλʔʣ potatotipsӡӦ૭ޱ / potatotipsΛओ࠵͍͚ͨͩΔձࣾ͞Μืूதʂ

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   UIApplication - sendAction

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   UIApplication - sendAction •࣮ࡍʹ࢖͍ͬͯΔਓ͸Ͳͷ͘Β͍ʁ •ͦ΋ͦ΋ଘࡏΛ஌͍ͬͯΔʁ •ʢUIControlͷ΄͏͸ͨ·ʹݟΔ͚Ͳ…ʣ •ʢ࢖͍ͬͯΔͷΛ͋Μ·Γݟͨ͜ͱͳ͍ʣ

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   UIApplication - sendAction NEW! iOS 9 Ͱ ྲྀ੕ ͷ͝ͱ͘ݱΕͨ ࠷ڧ

   ͷ function !?
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   UIApplication - sendAction iPhone OS 2 ͔Β ͘͝ ී௨ ʹଘࡏ͢Δ

   ͋·Γ ࢖ΘΕͳ͍ ΍ͭ
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   // hoge: ΛൃՐ let app = UIApplication.sharedApplication() app.sendAction("hoge:", to: xxx,

   from: sender, forEvent: nil) // hoge: func hoge(sender: AnyObject) { print("hoge!!") } αϯϓϧίʔυ UIApplication - sendAction
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   UIApplication - sendAction •ग़ͨΑɺจࣈྻࢦఆʂ •Objective-C෩selectorࢦఆ͕ݹष͍ •࢖͍ॴ͋Δͷʁ •RxSwiftͱ͔࢖͏΄͏͕Α͘ͳ͍ʁ app.sendAction("hoge:", to: xxx,

   from: sender, forEvent: nil) ͓͓ΉͶ ਖ਼ղ
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   Responder Chain (in UIKit)

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    Responder Chain (in UIKit) •Ԟ·ͬͨ֊૚ͰൃՐ •֊૚ͷͲ͜Ͱ΋ड͚ΒΕΔ •DelegateͷΑ͏ʹreceiverΛड͚ ౉͢ඞཁ͕ͳ͍ •ଞखஈͰಉ͡ߏ଄Λ࣮ݱ͢Δͷ͸ ೉͍͠

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    Responder Chain (in UIKit) app.sendAction("hoge:", to: xxx, from: sender, forEvent:

    nil) app.sendAction("hoge:", to: , from: sender, forEvent: nil) app.sendAction("hoge:", to: nil, from: sender, forEvent: nil)
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    Responder Chain (in UIKit) UITabBarController UIViewController UITabBarController UIViewController UIViewController UIViewController

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    Responder Chain (in UIKit) UITabBarController UIViewController UITabBarController UIViewController UIViewController UIViewController

    UITableView UITableViewCell UIView UIButton
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    sendActionͷྑ͍ͱ͜Ζ •Responder Chainͳૄ݁߹ͳ࢓૊ΈͰը໘ߏ੒ ͕มΘͬͯ΋ར༻Ͱ͖Δ •CocoaͷࠜװͱͳΔ࢓૊ΈͷͨΊྲྀߦʹࠨӈ͞ Εͳ͍

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    sendActionͷμϝͳͱ͜Ζ •ΠϯλʔϑΣʔε͕ݹ͍ •จࣈྻࢦఆ •selector?? •Ҿ਺ʹಛఆͷObjectΛ౉ͮ͠Β͍

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    ৽͍͠ΠϯλʔϑΣʔεͰϥοϐϯά // hoge: ΛൃՐ HogeEvent(hoge: hoge).fireFrom(self.view) // hoge: func hoge(sender:

    AnyObject) { guard let hoge: Hoge =ɹContext.valueFor(sender) else { return } print("hoge: \(hoge)") }
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    ·ͱΊ •UIApplicationͷsendAction͸৔߹ʹΑͬͯ͸༗ ༻ •ݹ͖ྑ͖ػೳ͕ͩը໘ߏ੒͕ෳࡶͳݱ୅Ͱͦ͜ ར༻Ձ஋͕͋Δ •ੲ͔Β͋Δػೳʹ΋ҙ֎ͱ࢖͑Δ΋ͷ͕຾ͬͯ ͍Δ͔΋ʁ

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    More Information Yuta ToKoRo iOS App Programer Twitter @tokorom http://www.tokoro.me/