既存のAndroidプロジェクトを Jetpack Composeに移行してみる / Migrate existing Android project to Jetpack Compose

by Nabe

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.PCJMF"DU0/-*/& طଘͷ"OESPJEϓϩδΣΫτΛ +FUQBDL$PNQPTFʹҠߦͯ͠ΈΔ

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1SPGJMF w ͳ΂ w 5XJUUFS!/BCF$PUU w (JU)VC/6NFSP"OE%FW w גࣜձࣾ͸ͯͳ w "OESPJEJ04BQQMJDBUJPOFOHJOFFS

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+FUQBDL$PNQPTFͱ͸ w "OESPJEʹ͓͚Δએݴత6*ͷϑϨʔϜϫʔΫ w "OESPJEҎ߱Ͱ࢖͑Δ w ݱࡏͰBMQIB͕࠷৽ w ೥ʹ4UBCMFʹͳΔ༧ఆ w IUUQTXXXZPVUVCFDPNXBUDI W6#XGR#QJ86GFBUVSFZPVUVCFU ͜ͷઌɺ+FUQBDL$PNQPTFΛ$PNQPTFͱলུͯ͠දه͠·͢

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ࠓ೔࿩͢͜ͱ w ࣮ࡍʹ͋ΔϓϩδΣΫτΛ+FUQBDL$PNQPTFʹ׬શҠߦͯ͠Έ·͢ w ͲͷΑ͏ͳखॱͰҠߦ͢Δ͜ͱʹͳΔͷ͔ w ҠߦͰେมͩͬͨՕॴ w +FUQBDL$PNQPTFʹඋ͑ͯࠓ͔ΒͰ͖Δ͜ͱ

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+FUQBDL$PNQPTFʹҠߦ͢Δखॱ طଘͷ7JFXͱಉ͡σβΠϯͷ$PNQPTBCMFGVOΛ࣮૷͢Δ w "OESPJE4UVEJPͰ1SFWJFXΛ֬ೝͰ͖Δ "DUJWJUZPS'SBHNFOUͷը໘୯ҐͰ$PNQPTF΁ஔ͖׵͑Δ w $PNQPTF͸"DUJWJUZ'SBHNFOU7JFX୯ҐͰͷಋೖ͕Մೳ ը໘ભҠΛ$PNQPTFͰભҠͤ͞ΔΑ͏ʹ͢Δ

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ࠓճҠߦ͢ΔϓϩδΣΫτ w 6IPPJ1JD#PPL"OESPJEͱ͍͏ɹ ΢ϗʔΠ͞Μ !UIF@VIPPJ ͕ (JU)VCʹ044ͱͯ͠ެ։͍ͯ͠ ΔϓϩδΣΫτΛ$PNQPTFʹҠ ߦͯ͠Έ·͢ w IUUQTHJUIVCDPNVIPPJ 6IPPJ1JD#PPL"OESPJE w ͜ͷΞϓϦ͸Ұཡɺৄࡉͱγϯϓ ϧͳߏ੒ͷΞϓϦͰ͢

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ΞΠςϜΛ࣮૷

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ΞΠςϜΛ࣮૷

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ϦετΛ࣮૷

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ϦετΛ࣮૷

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Ұཡͷը໘Λ࣮૷

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Ұཡͷը໘Λ࣮૷

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σʔλΛҰཡʹ൓ө w $PNQPTF͕௚઀ѻ͑Δ 0CTFSWBCMFͳܕͱͯ͠4UBUF ͕༻ҙ͞Ε͓ͯΓɺ-JWF%BUBΛ PCTFSWF"T4UBUFͰ$PNQPTF Ͱ؍ଌͰ͖ΔΑ͏ʹ w -JWF%BUBɺ4UBUF'MPXɺ 3Y+BWB͸4UBUFʹม׵͢Δ ࢓૊Έ͕༻ҙ͞Ε͍ͯΔ

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'SBHNFOUʹ$PNQPTFΛදࣔ w $PNQPTF7JFXΛ'SBHNFOUͷ7JFX ʹઃఆ͠ɺTFU$POUFOU಺ʹ $PNQPTFΛॻ͚ͩ͘ w .ED5IFNF͸ϓϩδΣΫτͰઃఆ͞ Ε͍ͯΔ5IFNFΛ$PNQPTFͷ 5IFNFʹஔ͖׵͑ͯ͘ΕΔ΋ͷ w IUUQTHJUIVCDPNNBUFSJBM DPNQPOFOUTNBUFSJBM DPNQPOFOUTBOESPJEDPNQPTF UIFNFBEBQUFS

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ଞͷը໘΋Ҡߦ͢Δ w جຊతʹͲͷը໘Ͱ΋खॱ͸ಉ͡Ͱ طଘͷ7JFXͱಉ͡σβΠϯͷ$PNQPTBCMFGVOΛ࣮૷͢Δ "DUJWJUZPS'SBHNFOUͷը໘୯ҐͰ$PNQPTF΁ஔ͖׵͑Δ Ͱஔ͖׵͍͖͑ͯ·͢ w ଞͷը໘ͷஔ͖׵͑͸লུ͠·͢

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ը໘ભҠΛҠߦ͢Δ w ࠓճ͸+FUQBDLʹ͋Δ/BWJHBUJPO$PNQPTFΛ࢖ͬͯભҠॲཧΛ࣮૷ w IUUQTEFWFMPQFSBOESPJEDPNKFUQBDLDPNQPTFOBWJHBUJPO w /BWJHBUJPO$PNQPTFΛ࢖ΘͣʹભҠॲཧΛؤு࣮ͬͯ૷͢Δ͜ͱ΋Ͱ͖Δ

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ը໘ͷάϥϑΛ࣮૷͢Δ w /BW)PTUͷதͰDPNQPTBCMFΛ࢖༻͠ ͯભҠʹ࢖͏SPVUFͱ$PNQPTBCMFͷ ఆٛΛ࣮૷͢Δ w /BWJHBUJPOͷ,PUMJO%4-ͷ࣮૷ͱಉ ͡ w ͜ͷDPNQPTBCMFͰ͸SPVUFʹઃఆ͠ ͨύεͰ%FFQMJOLΛੜ੒ͯ͠ભҠΛ࣮ ݱ͍ͯ͠Δ w /BW$POUSPMMFSʹఆٛͯ͋͠ΔSPVUFΛ ౉ͤ͹ભҠͰ͖Δ

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ભҠઌͷը໘ʹ஋Λ౉͢ w SPVUFʹ౉͍ͨ͠஋Λఆٛ͠ɺ BSHVNFOUTʹܕ৘ใΛఆٛ͠·͢ w ड͚औΔ࣌͸DPNQPTBCMFʹฦͬ ͯ͘Δ/BWCBDL4UBDL&OUSZ͔Β ड͚औΓ·͢ w ભҠ࣌ʹ4FSJBMJ[BCMF΍ 1BSDFMBCMFΛ౉͢खஈ͸ BMQIB࣌఺Ͱ͸ͳ͍

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ը໘ભҠΛҠߦ͢Δ w ϧʔτͷ"DUJWJUZʹ TFU$POUFOUͰ$PNQPTFΛද ࣔ͢ΔΑ͏ʹ͢Ε͹Ҡߦ׬ྃ

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$PNQPTFʹҠߦͯ͠Έͯ w طଘͷ7JFXͱ$PNQPTFʹޓ׵͕͋Δ͔Βಋೖ͠΍͍͢ w ࠓճ͸͍ͯ͠ͳ͍͕$PNQPTFʹ͜Ε·Ͱͷ7JFXΛදࣔͤ͞Δ͜ͱ΋Մೳ w ը໘ભҠͷҠߦ͕೉ॴͰɺ'SBHNFOU/BWJHBUJPOͱ/BWJHBUJPO$PNQPTF ͷซ༻͕೉͘͠ɺશͯͷը໘ભҠΛҰ౓ʹஔ͖׵͑ΔͱͳΔͱίετ͕ߴ͍ w 'SBHNFOU/BWJHBUJPO͸ͦͷ··ʹத͚ͩ$PNQPTFΛ࢖͏ͷ͕ࠓͷͱ ͜Ζແ೉ͦ͏ w $PNQPTFࣗମ͸׳ΕΔͱշదʹϨΠΞ΢τͰ͖Δ

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$PNQPTFΛݟӽͯ͠ࠓͰ͖Δ͜ͱ w "OESPJE"SDIJUFDUVSF$PNQPOFOUʹଇ࣮ͬͨ૷ɾઃܭΛ͍ͯ͠Δ͜ͱ w ެ͔ࣜΒ΋(VJEFUPBQQBSDIJUFDUVSFͱ͍͏υΩϡϝϯτ͕༻ҙ͞Ε͍ͯΔ w IUUQTEFWFMPQFSBOESPJEDPNKFUQBDLHVJEF w ݫີʹ͸7JFXʹ࣋ͭ΂͖Ͱͳ͍ϩδοΫ΍ঢ়ଶΛ͍࣋ͬͯͳ͍͜ͱ w $PNQPTF΁ͷஔ͖׵͑Ͱඞཁͳมߋ͕7JFX͚ͩʹ཈͑Δ͜ͱ͕Ͱ͖Δ w $PNQPTFΛ৮͓ͬͯ͘͜ͱ

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ࢀߟ w IUUQTEFWFMPQFSBOESPJEDPNKFUQBDLDPNQPTF w IUUQTEFWFMPQFSBOESPJEDPNKFUQBDLDPNQPTFJOUFSPQ w IUUQTEFWFMPQFSBOESPJEDPNKFUQBDLHVJEF w IUUQTHJUIVCDPNNBUFSJBMDPNQPOFOUTNBUFSJBMDPNQPOFOUTBOESPJEDPNQPTFUIFNFBEBQUFS w IUUQTHJUIVCDPNDISJTCBOFTBDDPNQBOJTU Ҡߦʹ࢖༻ͨ͠ϓϩδΣΫτ w IUUQTHJUIVCDPNVIPPJ6IPPJ1JD#PPL"OESPJE w 5IBOLT!UIF@VIPPJ 'PSLઌͰࢼ͠ʹ$PNQPTF΁Ҡߦͨ͠13 w IUUQTHJUIVCDPN/6NFSP"OE%FW6IPPJ1JD#PPL"OESPJEQVMM

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