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ReactiveCococaのMVVMで綺麗なコードができるのか.pdf
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Tomohisa Takaoka
June 27, 2014
Technology
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3.3k
ReactiveCococaのMVVMで綺麗なコードができるのか.pdf
Tomohisa Takaoka
June 27, 2014
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Transcript
ReactiveCococaͷMVVMͰ៉ ྷͳίʔυ͕Ͱ͖Δͷ͔ @tomohisa Tomohisa Takaoka 2014/6/27
None
डୗ։ൃ ʴ ΤϯλʔϓϥΠζ J-Tech Creations, Inc www.jtechs.com follow me @tomohisa
ຊͷεϖγϟϧίϯςϯπ Twitter @tomohisa ͔ΒͲ͏ͧ follow me @tomohisa
iOSΞϓϦͷ։ൃख๏ MVCύλʔϯ
•View - xib, Storyboard •Controller - UIViewController •Model (ಠࣗʹ࡞͢Δ) https://developer.apple.com/jp/devcenter/ios/library/japanese.html
͜ͷυΩϡϝϯτ͕ྑ͍ײ͡ͰMVCΛઆ໌͍ͯ͠·͢
ViewController͕େ͖͘ͳΓ͗͢Δʂ ※OSXʹɺCocoaόΠϯσΟϯάͱ͍͏ ViewͱσʔλΛ݁߹ͤ͞Δػೳ͕͋Δ͕ɺ iOSʹଘࡏ͠ͳ͍
ࣾ༻ͷλΠϜγʔτཧΞϓϦ
Background : parse.com ϢʔβʔཧͳͲͬͯ͘ΕΔ
ViewControllerʹσʔλऔಘͷίʔυ͕ͪ͝Ό·ͥ vVC (ංେԽͨ͠Ϗϡʔίϯτϩʔϥʔ)ʹͳͬͯ͠·ͬͨ
ReactiveCocoa Λͬͯ MVVM ʹॻ͖͑Δ
ReactiveCocoaͱʁ Function Reactive Programming (FRP) ΛObjective-CͰ࣮ݱ͢ΔͨΊͷϑϨʔϜϫʔΫ https://github.com/ReactiveCocoa/ReactiveCocoa
http://maoe.hatenadiary.jp/entry/20100109/1263059731
MVVMͱ http://www.teehanlax.com/blog/model-view-viewmodel-for-ios/
MVC MVVM ViewControllerɺେ͖ͳҙຯͰͷ VʹؚΉ
M V VM Model ViewController + IB ViewModel
M V VM Model 1.
Ϟσϧͷํ๏ View, ViewModel͔Β͢Δ
Ϟσϧͷํ๏̍ σʔλ(JSONͳͲͰදݱ͞ΕΔΦϒδΣΫτ) ֤σʔλΛද͢ΫϥεΛ࡞Δ JSON, XML, ParseObject ͳͲͷ DictionaryΞΫηεΛແ͘͢ ͪΌΜͱܕΛ࡞Δ σʔλʹ༝དྷ͢ΔϩδοΫ͜͜ʹॻ͘
ʢྫ͑̎ͷڑΛٻΊͨΓɺΦϒδΣΫτͰܭࢉ͠ ͨΓ͢Δ͍͋ʣ
worktime[“startedTime”] = [NSDate date]; worktime.startedTime = [NSDate date]; × ◦
Ϟσϧͷํ๏̎ σʔλͷಡΈॻ͖ͳͲڞ௨Ͱ͑Δػೳ (Downloader, Uploader, Calculator, Aggregator) ! σʔλͷશମ͔ΒΞϓϦͰूܭ͍ͨ͠ͳͲ μϯϩʔυ͢ΔػೳͳͲ ※parse
sdkʹඞཁͳػೳ͕͋ͬͨͷͰࠓճ࡞ͤͣ
Ϟσϧͷํ๏̏ ΞϓϦʹ݁߹͢Δͷ (ઃఆϑΝΠϧɺConstͳͲ) AppDelegateʹmodelϑΝΠϧΛ࣋ͨͤΔ AppDelegateʹͪ͝Όͪ͝Ό͔͔ͳ͍ʂ ΞϓϦͱͯ͠อ͍࣋ͯ͠Δσʔλ
͏ͱ͖ એݴ ΞϓϦʹ݁߹͢ΔmodelΛ࡞͢Δ
M V VM View Model 2.
https://github.com/ReactiveCocoa/ReactiveViewModel
None
RACCommand: ଞͷΦϒδΣΫτ͔Β࣮ߦग़དྷΔɻ ඇಉظॲཧͷ௨Λड͚Δ͜ͱՄೳ RACSignal: ௨ͷγάφϧΛड͚Δ͜ͱ͕Ͱ͖Δ KVOͰड͚औͬͨΒΓɺ௨ͷޙʹ͞Β ʹ࣍ͷ࡞ۀΛఆٛ͢Δ͜ͱՄೳ
M V VM View and ViewController 3.
ViewModelΛ࡞ͯ͠ɺViewModelͱViewΛόΠϯυ͢Δ
ϘλϯԡԼͷΠϕϯτΛViewModel ͷRACCommandͱؔ࿈͚Δ
ςΩετೖྗ࣌ʹViewModelͷσʔλΛߋ৽ ViewModelͰNoteͷߋ৽Λࢹ͠ɺߋ৽Λֻ͚Δ
ྑ͔ͬͨ •ViewModelʹUIίʔυ͕ͳ͍ͨΊɺUnitTest͕Մೳ •ViewModelʹStatusͳͲΛ࣋ͨͤɺදࣔΛௐ͢Δͷ͕ ༰қͦ͏ •ͦΕͧΕͷίʔυ͕͍ͯ͠ΔͷͰ͔Γ͍͢ •σʔλͷνΣοΫͳͲΛΈࠐΊΔ •εϨουͷཧͳͲ͕ߦΘΕ͍ͯΔͨΊɺόοΫάϥ ϯυͰUI͕มߋ͞ΕΔͳͲͷ͕͋·Γग़ͳͦ͞ ͏
Cons - ѱ͍ •ΊΜͲ͍͘͞ •Θ͔Γʹ͍͘ •ObjCͷػೳΛશ໘తʹ͍ͬͯΔͷͰɺSwift͚ͩͰͲ Ε͚ͩग़དྷΔͷ͔ʁ •ReactiveCocoaΛೖΕΔͱϓϩδΣΫτ͕ॏ͘ͳΔϏϧ υʹͨΒ͕͔͔࣌ؒΔ •ॳΊ͚ͯͩͲ·͔ͩΒͳ͍ڍಈ͕͋Δ
ɹʢ͔Δਓ͍ͨΒڭ͍͑ͯͩ͘͞ʣ
૯ׅɿ େنʹͳΕɺྑ͍ͷ͕ͭ͘Εͦ͏ɻ डୗ͕͍࣌͠ʹϓϩδΣΫτΛखͬ ͯͩ͘͞ΔϑϦʔϥϯε͞Μืूதʂ