iOS Clean Architecture のすすめ

by koutalou

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iOS Clean Architecture ͷ͢͢Ί 2016/11/17 גࣜձࣾϚωʔϑΥϫʔυ ࣇۄ޹ଠ࿠

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ࣗಈՈܭ฽ɾࢿ࢈؅ཧαʔϏεʰϚωʔϑΥϫʔυʱ iOS/AndroidΞϓϦ։ൃΛ୲౰͍ͯ͠·͢ ࣇۄ޹ଠ࿠!LPVUBMPV ΤϯδχΞ ࣗݾ঺հ

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औΓ૊Έ 1 $MFBO"SDIJUFDUVSFʹ͍ͭͯ 2 3PVUJOH %FQFOEFODZ*OKFDUJPO 3 $MFBO"SDIJUFDUVSFͷϝϦοτ

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औΓ૊Έ 1 $MFBO"SDIJUFDUVSFʹ͍ͭͯ 2 3PVUJOH %FQFOEFODZ*OKFDUJPO 3 $MFBO"SDIJUFDUVSFͷϝϦοτ 2 3

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Α͋͘ΔΞʔΩςΫνϟͷ໰୊ w ʮϏδωεϩδοΫ͸.PEFMʹஔ͘΂͖ʯͱݴ͏͕ɺ  ։ൃऀʹΑͬͯཧղ΍ҙݟ͕ҧ͏ w ౓ॏͳΔ࢓༷มߋ΍ෳࡶͳ࢓༷ʹରԠ͢ΔͨΊʹ7JFX$POUSPMMFS΍  ಛఆͷ.PEFM͕ංେԽ͠ɺϏδωεϩδοΫͷຊ࣭Λݟࣦ͏ w ಛఆͷϨΠϠ͕ෳ਺ͷ੹຿Λ࣋ͪґଘ౓ͷߴ͍ෳࡶͳίʔυ͕ੜ·ΕΔ ΤϯδχΞ ΤϯδχΞ ΤϯδχΞ ͍͢͝࢓༷มߋͩɺɺ ·ͨViewController͕๲ΒΉ ϏδωεϩδοΫ͜Μͳ ॻ͖ํͪ͠Ό͏Μͩɾɾ Model͕͍ΖΜͳॲཧΛ ؚΊͯෳࡶ͗͢Δɾɾ

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طଘͷ"SDIJUFDUVSF .7$"SDIJUFDUVSF .71 .77. "SDIJUFDUVSF %%%"SDIJUFDUVSF

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$MFBO"SDIJUFDUVSF 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUBUJPO-BZFS %PNBJO-BZFS %BUB-BZFS w ੹຿Λࡉ෼Խ͢Δ͜ͱͰɺ֤ϨΠϠ͕ԿΛ୲౰͢Δ͔໌֬ʹͳΔ w 6*ͱϏδωεϩδοΫΛ෼཭Ͱ͖ɺϨΠϠؒͷґଘΛ࠷খݶʹͰ͖Δ w ϨΠϠؒ͸ૄ݁߹ͳͷͰϞδϡʔϧͷஔ͖׵͑ɺςετ͕༰қ

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1SFTFOUBUJPO-BZFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUBUJPO-BZFS %PNBJO-BZFS %BUB-BZFS w 6*ͷදࣔ΍ΠϕϯτͷϋϯυϦϯάΛߦ͏ w ϏδωεϩδοΫ͸ؔ༩͠ͳ͍ 7JFX 1SFTFOUFS

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%PNBJO-BZFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 1SFTFOUBUJPO-BZFS %PNBJO-BZFS %BUB-BZFS w ϏδωεϩδοΫॲཧΛߦ͏ w ϏδωεϩδοΫ  ɹ3FQPTJUPSZ QBUUFSOΛҙࣝͯ͠ɺऔಘͨ͠σʔλΛ1SFTFOUBUJPO -BZFSʹඞཁͳσʔλʹ੔ܗͯ͠ฦ͢ɺ·ͨ͸ॲཧΛ͢Δ 3FQPTJUPSZ 7JFX 1SFTFOUFS

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%BUB-BZFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 1SFTFOUBUJPO-BZFS %PNBJO-BZFS %BUB-BZFS w ௨৴΍σʔλ؅ཧΛߦ͏ w %#΍αʔόͰ؅ཧ͞ΕΔ%BUB4PVSDFΛѻ͏ w 3FQPTJUPSZ͸%PNBJO-BZFS΁ͷ*'Ͱ&OUJUZͷ$36%Λఏڙ͢Δ 3FQPTJUPSZ 7JFX 1SFTFOUFS

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1SFTFOUBUJPO-BZFS 7JFX 1SFTFOUFS 6TF$BTF 1SFTFOUFS w 7JFXͱ6TF$BTFͷΠϕϯτͷڮ౉͠Λߦ͏ w ඞཁʹԠͯ͡7JFXʹ.PEFMΛ౉ͨ͠Γɺ6TF$BTFʹॲཧͤ͞Δ  7JFX 7JFX$POUSPMMFS w 7JFXͷΠϕϯτΛ1SFTFOUFSʹ௨஌͢Δ w ड͚औͬͨ.PEFM΍εςʔλεʹΑΓදࣔΛ੾Γସ͑Δ .PEFM΍4UBUVT৘ใ 7JFXͷ&WFOU .PEFM΍ॲཧ݁Ռ ॲཧͷཁٻ

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1SFTFOUBUJPO-BZFS 7JFX 1SFTFOUFS 6TF$BTF .PEFM΍4UBUVT৘ใ 7JFXͷ&WFOU .PEFM΍ॲཧ݁Ռ ॲཧͷཁٻ

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%PNBJO-BZFS 5SBOTMBUPS 1SFTFOUFS 6TF$BTF 6TF$BTF w ϢʔεέʔεʹඞཁͳϩδοΫॲཧΛهड़͢Δ 5SBOTMBUPS w 6TF$BTF͕औಘͨ͠&OUJUZΛ7JFXʹඞཁͳ.PEFMʹม׵͢Δ .PEFM w 7JFXͷදࣔʹඞཁͳ7BMVF0CKFDU &OUJUZ .PEFM΍ॲཧ݁Ռ ॲཧͷཁٻ &OUJUZ΍݁Ռ σʔλͷཁٻ 3FQPTJUPSZ .PEFM

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%PNBJO-BZFS 5SBOTMBUPS 1SFTFOUFS 6TF$BTF &OUJUZ .PEFM΍ॲཧ݁Ռ ॲཧͷཁٻ &OUJUZ΍݁Ռ σʔλͷཁٻ 3FQPTJUPSZ .PEFM

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%PNBJO-BZFS 5SBOTMBUPS 1SFTFOUFS 6TF$BTF &OUJUZ .PEFM΍ॲཧ݁Ռ ॲཧͷཁٻ &OUJUZ΍݁Ռ σʔλͷཁٻ 3FQPTJUPSZ .PEFM

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%BUB-BZFS 6TF$BTF 3FQPTJUPSZ w %BUB4PVSDFͷ$36%૬౰ͷ*' %BUB4UPSF w ࣮ࡍʹ௨৴΍σʔλ؅ཧΛߦ͏ &OUJUZ w %#΍αʔόͰ؅ཧ͞ΕΔ7BMVF0CKFDU &OUJUZ΍݁Ռ σʔλͷཁٻ 3FQPTJUPSZ %BUB4UPSF σʔλͷཁٻ &OUJUZ΍݁Ռ /FUXPSL %BUB#BTF σʔλऔಘߋ৽ &OUJUZ΍݁Ռ

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%BUB-BZFS 6TF$BTF &OUJUZ΍݁Ռ σʔλͷཁٻ %BUB4UPSF σʔλͷཁٻ &OUJUZ΍݁Ռ /FUXPSL %BUB#BTF σʔλऔಘߋ৽ &OUJUZ΍݁Ռ 3FQPTJUPSZ

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%BUB-BZFS 6TF$BTF &OUJUZ΍݁Ռ σʔλͷཁٻ %BUB4UPSF σʔλͷཁٻ &OUJUZ΍݁Ռ /FUXPSL %BUB#BTF σʔλऔಘߋ৽ &OUJUZ΍݁Ռ 3FQPTJUPSZ

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$MFBO"SDIJUFDUVSF 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUBUJPO-BZFS %PNBJO-BZFS %BUB-BZFS w ֤-BZFSͷ੹຿Λ෼͚ɺ࠷খݶͷ*'Ͱૄ݁߹ ˠ֤-BZFS͸ૄ݁߹͚ͩͲɺ͔͜͜ΒͲ͏΍ͬͯಈ͔͢ͷ͔ʁ

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औΓ૊Έ $MFBO"SDIJUFDUVSFʹ͍ͭͯ 2 3PVUJOH %FQFOEFODZ*OKFDUJPO $MFBO"SDIJUFDUVSFͷϝϦοτ 1 3

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%FQFOEFODZ*OKFDUJPO 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUBUJPO-BZFS %PNBJO-BZFS %BUB-BZFS w ֤-BZFSʹґଘੑΛ஫ೖ͢Δ w ֤-BZFSͷ࣮૷ϞδϡʔϧΛ݁߹͢Δ "QQMJDBUJPO-BZFS #VJMEFS

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%FQFOEFODZ*OKFDUJPO w ֤-BZFSʹґଘੑΛ஫ೖ͢Δ w ֤-BZFSͷ࣮૷ϞδϡʔϧΛ݁߹͢Δ

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3PVUJOH 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUBUJPO-BZFS %PNBJO-BZFS %BUB-BZFS w ը໘ભҠ΍ը໘֎ͷΠϕϯτΛڮ౉͢͠Δ w 1SFTFOUFS͕ΠϕϯτΛ஥հ "QQMJDBUJPO-BZFS #VJMEFS 8JSFGSBNF 8JSFGSBNF #VJMEFS 0UIFST

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8JSFGSBNF w ը໘ભҠ΍ը໘֎ͷΠϕϯτΛڮ౉͢͠Δ w 1SFTFOUFS͕ΠϕϯτΛ஥հ

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J04$MFBO"SDIJUFDUVSF 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUBUJPO-BZFS %PNBJO-BZFS %BUB-BZFS w ը໘ຖͷ"QQMJDBUJPO-BZFSΛ݁߹͢Δ͜ͱͰɺ  ɹJ04ΞϓϦέʔγϣϯ͕࣮૷Մೳ "QQMJDBUJPO-BZFS #VJMEFS 8JSFGSBNF

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औΓ૊Έ 3 $MFBO"SDIJUFDUVSFͷϝϦοτ $MFBO"SDIJUFDUVSFʹ͍ͭͯ 1 2 3PVUJOH %FQFOEFODZ*OKFDUJPO 2

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Ϟδϡʔϧͷڞ༗ Ұ෦ͷϞδϡʔϧΛஔ͖׵͑Δ͚ͩͰ৭Μͳը໘ʹରԠՄೳ HomeTimelinePresenterImpl UserTimelinePresenterImpl 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUFSͷΈϞδϡʔϧ͕ҟͳΔྫ

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ςετͷ༰қੑ RepositoryMockImpl 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ QSPUPDPMʹ४ڌͨ͠.PDL΍ςετίʔυͰ  ϨΠϠຖͷॊೈͳςετ͕Մೳ 3FQPTJUPSZΛ.PDLʹͯ͠ &OUJUZˠ.PEFMͷม׵Λςετ 6TF$BTFΛ.PDLʹͯ͠ɺ 7JFXͷ&WFOUʹର͢Δ1SFTFOUFSͷڍಈΛςετ UseCaseMockImpl

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1SPUPDPM0SJFOUFE1SPHSBNNJOH جຊ͸$MFBO"SDIJUFDUVSFΛҙࣝ͢Δ͚ͩͰ101ʹͳΔ w QSPUPDPMΛ࢖ͬͨ*'ʹΑΔ࠷খݶͷґଘؔ܎ w DMBTT͸ۃྗ࢖ΘͣTUSVDUͰ࣮૷͢Δ w QSPUPDPMʹ४ڌ࣮ͨ͠૷͸FYUFOTJPOͰهड़

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3Y4XJGUͱ͍͏બ୒ ϑϨʔϜϫʔΫʹґଘ͠ͳ͍$MFBO"SDIJUFDUVSFͷࢥ૝ʹ  ൓ͯ͠3Y4XJGUΛ࠾୒͍ͯ͠Δ ɹ1SPT w 6TF$BTF૚Ͱͷ1SPNJTFॲཧͷهड़͕༰қ w 3FQPTJUPSZ૚ҎԼͷ*'ΛετϦʔϜͰهड़ w ը໘ؒ&WFOU௨஌ͷ.VMUJ$BTUΛετϦʔϜͰ࣮૷Մ  $POT w ࠜװ෦Λ3Y4XJGUͷෆ۩߹΍ϝϯςφϯεঢ়گʹґଘ w 3Y4XJGUࣗମͷֶशίετ

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.71ͷ֦ு ݁ہ$MFBO"SDIJUFDUVSFͬͯ.71Λ֦ு͚ͨͩ͠Ͱ͸ʁ ˠ.71Λ֦ு͍ͯ͠Δͱ͍͏఺Ͱ͸ਖ਼͍͠

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$MFBO"SDIJUFDUVSFͱ͍͏ఆٛ ݴޠԽ͞Εͨఆ͕ٛ͋Δ͜ͱ͕ॏཁ ఆ͕ٛͳ͍ͱɺ։ൃऀʹΑͬͯཧղ΍ҙݟ͕όϥόϥʹͳͬͯ͠·͏ 7JFX 1SFTFOUFS 6TF$BTF 5SBOTMBUPS .PEFM %BUB4UPSF &OUJUZ 3FQPTJUPSZ 1SFTFOUBUJPO-BZFS %PNBJO-BZFS %BUB-BZFS "QQMJDBUJPO-BZFS #VJMEFS 8JSFGSBNF

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$MFBO"SDIJUFDUVSFͷ1SPT$POT ɹ1SPT w -BZFSຖʹ੹຿͕෼͔ΕϏδωεϩδοΫ͕໌෼Խ w ੹຿͕໌֬ͳͨΊՄಡੑɺϝϯςφϯεੑ͕ߴ͍ w શͯͷ૚ͰςετΛಋೖ͠΍͍͢ w ಛఆͷϑϨʔϜϫʔΫʹґଘ͠ͳ͍ $POT w ίʔυྔ͕ଟ͍ w $MFBO"SDIJUFDUVSFͷֶशίετ͕ߴ͍

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·ͱΊ %FTJHOFS FS ྑ͍ઃܭΛҙࣝͯ͠ ΑΓྑ͍ίʔυΛॻ͍͍ͯ͜͏ʂ w ֤-BZFSʹ੹຿Λࡉ෼Խ͢Δ͜ͱͰ࣮૷Ͱ໎Θͳ͍ɺՄಡੑ͕ߴ͍ w %*ʹΑΓϞδϡʔϧͷڞ௨Խɺςετͷ༰қੑ͕ߴ͍ w ϑϨʔϜϫʔΫʹґଘͤͣߴϝϯςφϯεੑΛ୲อͰ͖Δ $MFBO "SDIJUFDUVSF

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