iOSアプリの技術的負債をどう返済したか / How to repay the technical debt of iOS app

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iOSΞϓϦͷٕज़తෛ࠴Λ Ͳ͏ฦࡁ͔ͨ͠ Keisuke Kobayashi ʲώΧˑϥϘʳʲKyashɺCoineyɺPAYʳ৽͍͠ࢧ෷͍ͷܗΛ࡞ΔɺϞόΠϧܾ ࡁαʔϏεͷ։ൃͷཪଆͱ͸

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ࣗݾ঺հ • Keisuke Kobayashi • Twitter: kobakei122 • GitHub: kobakei • Kyash, Inc • Android / iOS / Engineering Manager

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ٕज़తෛ࠴ͷ࿩Λ͠·͢

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͔ͭͯͷKyash iOS൛ • ͳ͔ͥ1ਓͰ࡞ͬͯΔAndroid൛ΑΓɺ  3ਓͰ࡞ͬͯΔiOS൛ͷํ͕։ൃ͕஗͍ • ͔͠΋όά͕ଟ͍ • ͦͯ͠3ਓͷ͏ͪ2ਓ͕ࣙΊͨ

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͜Ε͸ϠόΠ

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ମ੍มߋ • @konifar ͕ೖࣾ͠AndroidνʔϜ΁ • @kobakei122 ͕AndroidνʔϜ͔Β  iOSνʔϜ΁ • ·ͣணखͨ͠ͷ͕ٕज़తෛ࠴ͷฦࡁ

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ٕज़తෛ࠴Λฦࡁ͍ͯ͘͠ • ιʔείʔυͷ඼࣭վળ • ϦιʔεपΓͷվળ • Ϗϧυߴ଎Խ

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ιʔείʔυͷ඼࣭վળ

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ະ࢖༻ίʔυͷ࡟আ • ͱʹ͔͘ফ͢ • Find Selected Symbol in Workspace • Androidͷ࣮૷Λݟͭͭɺ͢Ͱʹଘࡏ͠ͳ͍ ػೳ΍ը໘Λফ͍ͯ͘͠

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ΞʔΩςΫνϟݟ௚͠ • MVVM + ϨΠϠʔυΞʔΩςΫνϟͷ࠾༻

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MVVM • UI͸ςετ͠ʹ͍͘ • UIͷϩδοΫΛViewController͔Βണ͕͢͜ ͱͰɺςετΛॻ͖΍͘͢͢Δ 7JFX 6*7JFX$POUSPMMFS 7JFX.PEFM .PEFM

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ϨΠϠʔυΞʔΩςΫνϟ • ؔ਺ݺͼग़͠Λ1ํ޲ʹ౷Ұ͢Δ • ಉ͡֊૚ͷݺͼग़͠΋ېࢭ$ • Ϋϥεؒͷґଘؔ܎Λγϯϓϧʹอͭ • ֤ϨΠϠʔͷ੹຿Λ໌֬ʹ͢Δ • ΫϥεංେԽͷ๷ࢭ

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·ͱΊΔͱ͜Μͳઃܭ 7JFX 7JFX.PEFM 3FQPTJUPSZ "1*$MJFOU ,FZDIBJO

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·ͱΊΔͱ͜Μͳઃܭ 7JFX 7JFX.PEFM 3FQPTJUPSZ "1*$MJFOU ,FZDIBJO 6*7JFX$POUSPMMFS 5BCMF7JFX$FMMͳͲ

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·ͱΊΔͱ͜Μͳઃܭ 7JFX 7JFX.PEFM 3FQPTJUPSZ "1*$MJFOU ,FZDIBJO 6*ʹؔ͢ΔϩδοΫ

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·ͱΊΔͱ͜Μͳઃܭ 7JFX 7JFX.PEFM 3FQPTJUPSZ "1*$MJFOU ,FZDIBJO ֤&OUJUZͷ$36%

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·ͱΊΔͱ͜Μͳઃܭ 7JFX 7JFX.PEFM 3FQPTJUPSZ "1*$MJFOU ,FZDIBJO ֤छ σʔλιʔεͷ  ஋ΛಡΈॻ͖

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RxSwiftͷಋೖ • DispatchQueueͰඇಉظॲཧ͸ਏ͍ • ͲΜͲΜਂ͘ͳΔωετ • leave࿙ΕʹΑΔόά • RxSwiftͳΒඇಉظॲཧͷ௚ྻɾฒྻ࣮ߦ͕؆୯ • ྫ: APIΛ2ͭݺͼग़ͯ͠ɺ݁Ռ͕ἧ͔ͬͯΒ  ը໘ߋ৽

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ϦιʔεपΓͷվળ

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Storyboardͷ෼ׂ • ෳ਺ը໘Λ࣋ͭStoryboardΛಉ࣌ʹฤूͯ͠ ίϯϑϦΫτ͢Δࣄނ͕ଟൃ • 1ը໘1StoryboardʹͳΔ·Ͱ෼ׂ • ͦΕͰ΋ͨ·ʹࣄނΔͷͰνʔϜͰͷ੠ֻ͚ େࣄ

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Segueېࢭ • Storyboard෼ׂͷ͍ͭͰʹېࢭ • ը໘ભҠͰ஋Λ౉͢ͱ͖ʹɺભҠϩδοΫ͕ Storyboardͱίʔυʹ෼ࢄͯ͠͠·͏ • ୅ΘΓʹίʔυʹू໿͢Δ • ը໘ભҠ༻ͷstaticؔ਺Λ༻ҙͯ͠ɺ஋ͷܕ΋ݻఆ ͢Δ

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SwiftGen • ֤छϦιʔεͷఆ਺Λࣗಈੜ੒͢ΔϥΠϒϥϦ • จࣈྻ • ը૾ • ৭ • Storyboard • ଘࡏ͠ͳ͍จࣈྻ΍ը૾Λ࢖ͬͨΒϏϧυ࣌ʹΤϥʔʹͳΔ

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ΧϥʔύϨοτ • όʔδϣϯ؅ཧ͢ΔΑ͏ʹ • ~/Library/Colors/ʹίϐʔ͢Δ͜ͱͰɺνʔϜ ͷશһ͕ಉ͡ύϨοτΛ࢖༻Ͱ͖Δ • SwiftGenͱͷ૬ੑ΋

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Ϗϧυߴ଎Խ

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Embedded Framework • UI૚ͷमਖ਼͕΄ͱΜͲͳͷͰɺModel૚͸Ͱ͖Δ͚ͩϏϧυͨ͠ ͘ͳ͍ • Model૚ΛϨΠϠʔ͝ͱʹϑϨʔϜϫʔΫԽ • Repository • Infrastructure • Entity • Utility

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CocoaPods -> CarthageҠߦ • ϥΠϒϥϦͷϏϧυ͕஗͍ • Carthage/Build/ҎԼ΋gitʹίϛοτ • ͱ͸ݴ͑શͯͷϥΠϒϥϦΛҠߦͰ͖ΔΘ͚ Ͱ͸ͳ͍ • ྫ: Firebase

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MBPങ͍ସ͑ • ΋͏ҰਓͷiOSΤϯδχΞ͕MBP 13ΠϯνΛ࢖͍ͬͯ ͨ • MBP 15ΠϯνΛࢧڅ • ΫΞουίΞCPU͸iOSΤϯδχΞͷ  جຊతਓݖ • iMac Proཉ͍͠

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3͔݄ޙ…

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ͦ͜ʹ͸ݩؾʹ૸ΓճΔ  iOSνʔϜͷ͕࢟ʂ • ։ൃ଎౓ͷ޲্ • Androidʹ௥͍͍ͭͨʂ • ඼࣭ͷ޲্ • Crash Free Rate

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ࠓޙͷ༧ఆ • ςετΛ͝Γ͝Γॻ͍͍ͯ͘ • ·ͩςετΛॻ͚Δঢ়ଶʹͳ͚ͬͨͩ • ViewModelத৺ʹॻ͘ํ਑ • UI૚Λࡉ͔͘ϑϨʔϜϫʔΫԽ • ·ͣ͸ڞ௨Ͱ࢖͏ΧελϜϏϡʔͳͲ • υϝΠϯ૚͋ͬͨ΄͏͕͍͍͔΋

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Thanks!!!