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ReactiveCococaͷMVVMͰ៉ ྷͳίʔυ͕Ͱ͖Δͷ͔ @tomohisa Tomohisa Takaoka 2014/6/27

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डୗ։ൃ ʴ ΤϯλʔϓϥΠζ J-Tech Creations, Inc www.jtechs.com follow me @tomohisa

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ຊ೔ͷεϖγϟϧίϯςϯπ Twitter @tomohisa ͔ΒͲ͏ͧ follow me @tomohisa

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iOSΞϓϦͷ։ൃख๏ MVCύλʔϯ

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•View - xib, Storyboard •Controller - UIViewController •Model (ಠࣗʹ࡞੒͢Δ) https://developer.apple.com/jp/devcenter/ios/library/japanese.html ͜ͷυΩϡϝϯτ͕ྑ͍ײ͡ͰMVCΛઆ໌͍ͯ͠·͢

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ViewController͕େ͖͘ͳΓ͗͢Δʂ ※OSXʹ͸ɺCocoaόΠϯσΟϯάͱ͍͏ ViewͱσʔλΛ݁߹ͤ͞Δػೳ͕͋Δ͕ɺ iOSʹ͸ଘࡏ͠ͳ͍

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ࣾ಺༻ͷλΠϜγʔτ؅ཧΞϓϦ

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Background : parse.com Ϣʔβʔ؅ཧͳͲ΍ͬͯ͘ΕΔ

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ViewControllerʹσʔλऔಘͷίʔυ͕ͪ͝Ό·ͥ vVC (ංେԽͨ͠Ϗϡʔίϯτϩʔϥʔ)ʹͳͬͯ͠·ͬͨ

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ReactiveCocoa Λ࢖ͬͯ MVVM ʹॻ͖׵͑Δ

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ReactiveCocoaͱ͸ʁ Function Reactive Programming (FRP) ΛObjective-CͰ࣮ݱ͢ΔͨΊͷϑϨʔϜϫʔΫ https://github.com/ReactiveCocoa/ReactiveCocoa

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http://maoe.hatenadiary.jp/entry/20100109/1263059731

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MVVMͱ͸ http://www.teehanlax.com/blog/model-view-viewmodel-for-ios/

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MVC MVVM ViewController͸ɺେ͖ͳҙຯͰͷ VʹؚΉ

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M V VM Model ViewController + IB ViewModel

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M V VM Model 1.

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Ϟσϧͷ෼཭ํ๏ View, ViewModel͔Β෼཭͢Δ

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Ϟσϧͷ෼཭ํ๏̍ σʔλ(JSONͳͲͰදݱ͞ΕΔΦϒδΣΫτ) ֤σʔλΛද͢ΫϥεΛ࡞Δ JSON, XML, ParseObject ͳͲͷ DictionaryΞΫηεΛແ͘͢ ͪΌΜͱܕΛ࡞Δ σʔλʹ༝དྷ͢ΔϩδοΫ͸͜͜ʹॻ͘ ʢྫ͑͹̎఺ͷڑ཭ΛٻΊͨΓɺΦϒδΣΫτ಺Ͱܭࢉ͠ ͨΓ͢Δ͹͍͋ʣ

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worktime[“startedTime”] = [NSDate date]; worktime.startedTime = [NSDate date]; × ○

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Ϟσϧͷ෼཭ํ๏̎ σʔλͷಡΈॻ͖ͳͲڞ௨Ͱ࢖͑Δػೳ (Downloader, Uploader, Calculator, Aggregator) ! σʔλͷશମ͔ΒΞϓϦ಺Ͱूܭ͍ͨ͠ͳͲ μ΢ϯϩʔυ͢ΔػೳͳͲ ※parse sdkʹඞཁͳػೳ͕͋ͬͨͷͰࠓճ͸࡞੒ͤͣ

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Ϟσϧͷ෼཭ํ๏̏ ΞϓϦʹ݁߹͢Δ΋ͷ (ઃఆϑΝΠϧɺConstͳͲ) AppDelegateʹmodelϑΝΠϧΛ࣋ͨͤΔ AppDelegateʹͪ͝Όͪ͝Ό͔͔ͳ͍ʂ ΞϓϦͱͯ͠อ͍࣋ͯ͠Δσʔλ

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࢖͏ͱ͖ એݴ ΞϓϦʹ݁߹͢ΔmodelΛ࡞੒͢Δ

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M V VM View Model 2.

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https://github.com/ReactiveCocoa/ReactiveViewModel

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RACCommand: ଞͷΦϒδΣΫτ͔Β࣮ߦग़དྷΔɻ ඇಉظॲཧͷ௨஌Λड͚Δ͜ͱ΋Մೳ RACSignal: ௨஌ͷγάφϧΛड͚Δ͜ͱ͕Ͱ͖Δ KVOͰड͚औͬͨΒΓɺ௨஌ͷޙʹ͞Β ʹ࣍ͷ࡞ۀΛఆٛ͢Δ͜ͱ΋Մೳ

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M V VM View and ViewController 3.

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ViewModelΛ࡞੒ͯ͠ɺViewModelͱViewΛόΠϯυ͢Δ

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ϘλϯԡԼͷΠϕϯτΛViewModel ͷRACCommandͱؔ࿈෇͚Δ

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ςΩετೖྗ࣌ʹViewModelͷσʔλΛߋ৽ ViewModel಺ͰNoteͷߋ৽Λ؂ࢹ͠ɺߋ৽Λֻ͚Δ

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ྑ͔ͬͨ఺ •ViewModel಺ʹ͸UIίʔυ͕ͳ͍ͨΊɺUnitTest͕Մೳ •ViewModelʹStatusͳͲΛ࣋ͨͤɺදࣔΛௐ੔͢Δͷ͕ ༰қͦ͏ •ͦΕͧΕͷίʔυ͕෼཭͍ͯ͠ΔͷͰ෼͔Γ΍͍͢ •σʔλͷνΣοΫͳͲΛ૊ΈࠐΊΔ •εϨουͷ؅ཧͳͲ͕ߦΘΕ͍ͯΔͨΊɺόοΫάϥ ΢ϯυͰUI͕มߋ͞ΕΔͳͲͷ໰୊͕͋·Γग़ͳͦ͞ ͏

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Cons - ѱ͍఺ •ΊΜͲ͍͘͞ •Θ͔Γʹ͍͘ •ObjCͷػೳΛશ໘తʹ࢖͍ͬͯΔͷͰɺSwift͚ͩͰͲ Ε͚ͩग़དྷΔͷ͔ʁ •ReactiveCocoaΛೖΕΔͱϓϩδΣΫτ͕ॏ͘ͳΔϏϧ υʹ΍ͨΒ͕͔͔࣌ؒΔ •ॳΊͯ਺೔͚ͩͲ·ͩ෼͔Βͳ͍ڍಈ͕͋Δ ɹʢ෼͔Δਓ͍ͨΒڭ͍͑ͯͩ͘͞ʣ

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૯ׅɿ େن໛ʹͳΕ͹ɺྑ͍΋ͷ͕ͭ͘Εͦ͏ɻ डୗ͕๩͍࣌͠ʹϓϩδΣΫτΛख఻ͬ ͯͩ͘͞ΔϑϦʔϥϯε͞Μืूதʂ