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Responder ChainΛ࢖ͬͯ ίʔυΛεοΩϦ͍ͤͨ͞ HAKATA.swift @ukitaka

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twitter: @ukitaka_ github: @ukitaka Yuki Takahashi

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ࣗݾ঺հ ❤ ؔ਺ܕϓϩάϥϛϯάɺDDD ✏ ܕγεςϜɺίϯύΠϥ ௿ϨΠϠʔ

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ࠓ೔ͷ࿩

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͍͖ͳΓͰ͕͢ɺ ͜ΜͳέʔεΛߟ͑ͯΈΔ

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Cellͷதͷ ϘλϯΛλοϓͨ͠Β Alert / ActionSheetग़͍ͨ͠

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͋Γ͕ͪ

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஍ຯʹΊΜͲ͍͘͞ • UIAlertControllerΛग़͢ʹ͸ViewControllerͰ ॲཧΛ͢Δඞཁ͕͋Δ • Cell͸ViewControllerͳΜͯ஌Βͳ͍ • ViewController΋CellͷϘλϯΛ(ී௨͸)௚઀ࢀ র͍ͯ͠ͳ͍

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Α͋͘Δରॲ๏ • DelegateΛҾճ͢ • ֊૚͕ਂ͘ͳΕ͹ͳΔ΄Ͳਏ͍ • Viewߏ଄ͷมԽʹऑ͍

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ͳΜͱ͔͍ͨ͠

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ݪ఺ʹཱͪฦͬͯMVC

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MVCͰ͸Ͳ͏͋Δ΂͖ʁ

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ϢʔβΞΫγϣϯͷॲཧ • MVCʹ͓͚ΔControllerͷΑ͏ͳΦϒδΣΫ τʹ௨஌Λͯ͠ϢʔβΞΫγϣϯड͚ͱΔͷ ͕ී௨ • MVCʹݶΒͣɺͲͷΞʔΩςΫνϟͰ͋ͬͯ ΋ಉ͡

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௨஌Λ͠Α͏

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ཧ૝

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௨஌͢ΔଆΠϝʔδ .notifyΛݺͿ͚ͩ

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௨஌Λड͚औΔଆΠϝʔδ ͍͍ײ͡ʹDelegateͰड͚औΕΔ

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DelegateΛҾճ͢ඞཁ͕ͳ͍ DelegateύλʔϯͷΑ͏ͳ Πϝʔδ

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ͦ͜Ͱ Responder Chain

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= UIResponderͷ࿈ͳΓ

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UIResponder • UIReponder = ϢʔβͷೖྗΛर͑Δ΍ͭ • ͋ΔsubviewͰΠϕϯτΛर͏ͱॲཧͰ͖Δͱ ͜Ζ·Ͱ࣍ʑʹॲཧΛճ͍ͯ͘͠ • self.next Ͱ࣍ͷResponder͕औΕΔ = Responder Chain

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UIResponder • ResponderChain্ʹ͸౰વViewController΋ ͍Δʂ • DelegateΛҾ͖ճ͢·Ͱ΋ͳ͘ɺ͢Ͱʹͭͳ ͕͍ͬͯΔ • ͜Εʹ৐͔ͬΕ͹͍͍ײ͡ʹViewControllerʹ ʮ௨஌ʯͰ͖ͦ͏ʂ

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ͳΜ͔࢖͑ͦ͏

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Ͳ͏΍Δ͔ʁ

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ActionΛఆٛ͢Δ

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DelegateΛఆٛ͢Δ

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ViewEventΛఆٛ͢Δ ୭͕ϋϯυϧ͢Δ͔ͱɺ Ͳ͏σΟεύον͢Δ͔ΛܾΊΔɻ

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ViewEventΛఆٛ͢Δ

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UIResponderΛ֦ு͢Δ Responder ChainΛḷͬͯɺ ΠϕϯτΛϋϯυϧͰ͖Δ΍ͭΛݟ͚ͭΔ

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׬੒ʂ

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௨஌͢ΔଆΠϝʔδ .notifyΛݺͿ͚ͩ

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௨஌Λड͚औΔଆΠϝʔδ ͍͍ײ͡ʹDelegateͰड͚औΕΔ

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ཧ૝ͷੈք͕࣮ݱͨ͠

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ྑ͍఺ • DelegateΛViewͷਂ͍֊૚·ͰҾճ͢ඞཁ͕ ͳ͘ͳͬͨ • Viewͷ֊૚͕มԽͨ͠ͱͯ͠΋ɺίʔυͷม ߋ͕ෆཁɻViewͷมߋʹڧ͍ɻ

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มΘΒͳ͍఺ • ͋ΔΠϕϯτΛड͚औΔͨΊͷprotocol࣮૷ ͠๨ΕΛίϯύΠϧ࣌ʹ͸ݕग़Ͱ͖ͳ͍ • ͜Ε͸Delegateઃఆ͠๨ΕͰ΋ಉ͡ • ࣮ࡍʹಈ͔͢ or ςετͰΧόʔ

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RxCocoa΁ͷԠ༻

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RxCocoa + Responder Chain • RxΛ࢖͍ͬͯͯ΋ಉ͡໰୊͕ى͜Δ • RxDataSourcesΛ࢖͍ͬͯͯ΋ɺCellͷதͷΠ ϕϯτ͸र͑ͳ͍ • Responder Chainʹྲྀͯ͠͠·͓͏

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ukitaka/RxResponderChain

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࢖͍ํ

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ࡶʹResponder Chainʹྲྀ͢ Ϙλϯ͕λοϓ͞ΕͨΒ

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ࡶʹResponder Chainʹྲྀ͢ ద੾ͳܕʹม׵ͯ͠

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ࡶʹResponder Chainʹྲྀ͢ Responder Chainʹྲྀ͢

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ࡶʹVCͰड͚औΔ ViewControllerͰ ܕΛࢦఆͯ͠ड͚औΔ

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গ͚࣮ͩ͠૷ΛΈΔ

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࣮૷ͷཪଆ ࠇຐज़ʹΑ֤ͬͯUIResponderΦϒδΣΫτʹ PublishSubjectΛ࣋ͨͤΔ

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࣮૷ͷཪଆ self.rx.responderChain Λੜ΍͢

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࣮૷ͷཪଆ ͜ͷΦϒδΣΫτ͸ObserverType

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࣮૷ͷཪଆ ઒ʹEvent͕ྲྀΕ͖ͯͨΒ ResponderChainΛḷͬͯ

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࣮૷ͷཪଆ ͖ͬ͞ੜ΍ͨ͠PublishSubjectʹ ΠϕϯτΛྲྀ͢

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࣮૷ͷཪଆ ड͚औΔͱ͖͸ܕͰfilter

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·ͱΊ

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ResponderChain • View → ViewController͸Responder Chainܨ ͕͍ͬͯΔ • ௨஌ʹ࢖͑Δ / ָʹॻ͚Δ / มߋʹڧ͍

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͓ΘΓ