XcodeのDevelopment Assets探訪

by Sho Ikeda

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Xcodeͷ Development Assets ୳๚ @ikesyo / Sho Ikeda potatotips #79 2022-10-31 Mon #potatotips

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@ikesyo / Sho Ikeda • ͍͚͠ΐʔʗ஑ా ᠳ • גࣜձࣾ͸ͯͳ γχΞΤϯδχΞʢژ౎ʣ • ϚϯΨΞϓϦνʔϜ • iOS / Android / React Native • Swiftίϛολʔ • swift-corelibs-foundation • Quick/Nimbleͷϝϯςφʔ • ࠷ۙ͸ٳࢭؾຯ…… • https://twitter.com/ikesyo • https://github.com/ikesyo

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ීஈ͸ϚϯΨΞϓϦΛ࡞͍ͬͯ·͢ • ʮGigaViewer for AppsʯͰϚϯΨͷະདྷΛ޿͍͛ͨ - ࠾༻৘ใ - גࣜձࣾ͸ͯͳ

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ීஈ͸ϚϯΨΞϓϦΛ࡞͍ͬͯ·͢ • νʔϜϝϯόʔͷΞ΢τϓοτ • ϚϯΨϏϡʔϫGigaViewer for AppsͰJetpack ComposeΛશ໘࠾༻ͯ͠Έͨ - Hatena Developer Blog • GigaViewer for AppsͰ࢖͍ͬͯΔศརSwiftUIίϯϙʔωϯτ̑࿈ൃʂ - Hatena Developer Blog

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Xcodeͷ Development Assets ୳๚

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Development Assets • Xcode 11ͰSwiftUIͱڞʹొ৔ͨ͠ػೳ • SwiftUIͷϓϨϏϡʔʹ࢖͏ը૾ϦιʔεͳͲͷΞηοτͷύεΛࢦఆ͢Δ • ΞηοτΧλϩά΍JSONσʔλͳͲͷϦιʔε͚ͩͰͳ͘ɺιʔείʔ υʹ΋࢖͑Δ • ͜͜Ͱࢦఆͨ͠ίϯςϯπ͸։ൃ൛ͷΞϓϦʹؚ͔͠·Εͳ͍ • ϓϨϏϡʔ༻ͷը૾Ϧιʔε΍μϛʔσʔλΛ࡞ΔίʔυͳͲΛ੡඼ ൛ͷΞϓϦʢϏϧυʣʹؚΊͣʹࡁΉ

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Development Assets • λʔήοτͷઃఆͷGeneralͷ࠷Լ෦ͷ Development Assets • SwiftUIͷϓϩδΣΫτΛ৽ن࡞੒͢Δ ͱ $λʔήοτ໊/Preview Content ͱ͍͏ύεͱɺͦͷதʹ Preview Assets ͱ͍͏ΞηοτΧλϩά͕σ ϑΥϧτͰ༻ҙ͞Ε͍ͯΔ • σΟϨΫτϦ୯ҐͰ΋ɺϑΝΠϧ୯Ґ Ͱ΋ࢦఆͰ͖Δ

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։ൃ൛ͷΞϓϦͱ͸ https://developer.apple.com/documentation/xcode/build- settings-reference#Development-Assets Development Assets Setting name: DEVELOPMENT_ASSET_PATHS ɹ Files and directories used only for development. Archive and install builds will exclude this content.

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։ൃ൛ͷΞϓϦͱ͸ • archiveϏϧυʢͱinstallϏϧυʣͷ࣌ ʹ͸Ϗϧυର৅͔Βআ֎͞ΕΔ • xcodebuild ͷ archive ΞΫγϣϯ ͱ install ΞΫγϣϯ • XcodeͷGUI্Ͱ͸ArciveͷΈ • DebugϏϧυͰͷΈ༗ޮͳ༁Ͱ͸ͳ͍ • DebugϏϧυ͚ͩʹߜΓ͍ͨιʔ είʔυʹ͸ #if DEBUG ... #endif ͕ඞཁ

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XcodeGen • Development Assetsͷ࣮ଶ͸ DEVELOPMENT_ASSET_PATHS ͱ͍͏Ϗϧυઃఆ • XcodeGenͰ࢖͏ʹ͸ࢦఆ͍ͨ͠λʔήοτͰͦͷϏϧυઃఆΛࢦఆ͢Ε͹ Α͍ targets: Foo: ... settings: base: DEVELOPMENT_ASSET_PATHS: - Foo/Preview Content

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༻్ • ϓϨϏϡʔ༻ͷը૾ϦιʔεʢΞηοτΧλϩάʣ • ϓϨϏϡʔ༻ͷμϛʔσʔλ • APIϨεϙϯεͷJSON • μϛʔσʔλΛ࡞Δίʔυ • ϞοΫ • ...

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ϞοΫ • uber/MockoloͳͲʹΑΔϞοΫੜ੒͸ɺςετλʔήοτͰߦ ͍ɺςετίʔυͰར༻͢Δͷ͕ҰൠతͩͱࢥΘΕΔ͕ • ViewͷϓϨϏϡʔͷͨΊʹViewModel͕ඞཁͰɺViewModelͷ ੜ੒ʹ͸ґଘੑͷprotocolͷ࣮ମ͕ඞཁͰɺϓϨϏϡʔ༻ʹ͸ ϞοΫΛ࢖͍͍ͨͱ͍͏έʔε • Կ΋͠ͳ͍ • μϛʔσʔλΛฦ͢

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ϞοΫ • ϞοΫΛςετλʔήοτͰ͸ͳ͘ɺϝΠϯλʔήοτʹؚΊΔ͜ͱͰɺϞοΫΛ ϓϨϏϡʔͰ΋ར༻Ͱ͖Δ • ϞοΫੜ੒ʢͷεΫϦϓτϏϧυϑΣʔζͳͲʣΛϝΠϯλʔήοτଆͰ࣮ߦ͢ Δ • ੜ੒͞ΕͨϞοΫͷιʔείʔυʢΛؚΉσΟϨΫτϦʣΛDevelopment Assetsʹࢦఆ͢Δ • ϞοΫ͕੡඼൛ʹؚ·Εͳ͍͜ͱΛอূͰ͖Δ • ϞοΫͷੜ੒ίʔυΛϓϨϏϡʔ΍ςετίʔυҎ֎Ͱར༻͍ͯ͠Ε͹archive ࣌ʹϏϧυΤϥʔʹͳΔ

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·ͱΊ • Development Assetsͱ͸ • Development Assetsͷ࢖͍ํ • ը૾ϦιʔεʢΞηοτΧλϩάʣҎ֎ͷ༻్ • ϞοΫΛςετ͚ͩͰͳ͘ϓϨϏϡʔʹ΋࢖͏

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ࢀߟࢿྉ • Mastering Xcode Previews - WWDC19 - Videos - Apple Developer • طଘϓϩδΣΫτͰ SwiftUI ͷϓϨϏϡʔػೳΛ࢖͏ Using SwiftUI preview in existing project - ObjecTips • Structure your app for SwiftUI previews - WWDC20 - Videos - Apple Developer • ๩͍͠ਓ޲͚ͷ Structure your app for SwiftUI previews - #WWDC20ʛށըඒ֯ʛnote