古き良きsendAction (in potatotips #26)

UIApplicationのsendActionを見直そう

Transcript

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

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

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3. UIApplication - sendAction
   

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

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5. UIApplication - sendAction
   NEW!
   iOS 9
   Ͱ
   
   ྲྀ੕
   ͷ͝ͱ͘ݱΕͨ
   
   ࠷ڧ
   ͷ
   function !?
   

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6. UIApplication - sendAction
   iPhone OS 2
   ͔Β
   
   ͘͝
   ී௨
   ʹଘࡏ͢Δ
   
   ͋·Γ
   ࢖ΘΕͳ͍
   ΍ͭ
   

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7. // 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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8. UIApplication - sendAction
   •ग़ͨΑɺจࣈྻࢦఆʂ
   •Objective-C෩selectorࢦఆ͕ݹष͍
   •࢖͍ॴ͋Δͷʁ
   •RxSwiftͱ͔࢖͏΄͏͕Α͘ͳ͍ʁ
   app.sendAction("hoge:", to: xxx, from: sender, forEvent: nil)
   ͓͓ΉͶ
   ਖ਼ղ
   

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9. Responder Chain (in UIKit)
   

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

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11. 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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12. Responder Chain (in UIKit)
    UITabBarController
    UIViewController
    UITabBarController
    UIViewController
    UIViewController
    UIViewController
    

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13. Responder Chain (in UIKit)
    UITabBarController
    UIViewController
    UITabBarController
    UIViewController
    UIViewController
    UIViewController
    UITableView
    UITableViewCell
    UIView
    UIButton
    

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14. sendActionͷྑ͍ͱ͜Ζ
    •Responder Chainͳૄ݁߹ͳ࢓૊ΈͰը໘ߏ੒
    ͕มΘͬͯ΋ར༻Ͱ͖Δ
    •CocoaͷࠜװͱͳΔ࢓૊ΈͷͨΊྲྀߦʹࠨӈ͞
    Εͳ͍
    

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

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16. ৽͍͠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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17. ·ͱΊ
    •UIApplicationͷsendAction͸৔߹ʹΑͬͯ͸༗
    ༻
    •ݹ͖ྑ͖ػೳ͕ͩը໘ߏ੒͕ෳࡶͳݱ୅Ͱͦ͜
    ར༻Ձ஋͕͋Δ
    •ੲ͔Β͋Δػೳʹ΋ҙ֎ͱ࢖͑Δ΋ͷ͕຾ͬͯ
    ͍Δ͔΋ʁ
    

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

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