Androidアプリ開発における技術顧問としての役割 #DroidKaigi 2018

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AndroidΞϓϦ։ൃʹ ͓͚Δٕज़ސ໰ͱͯ͠ ͷ໾ׂ DroidKaigi 2018 @cutmail

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͢Δ࿩ • ٕज़ސ໰ͱͯ͠νʔϜΛͲ͏ཱͯ௚͔ͨ͠ • ٕज़ސ໰ͱͯ͠ձࣾʹͲ͏ߩݙ͢Δ͔ • ௚ۙͷϓϩδΣΫτͰԿΛ࠾༻͔ͨ͠

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͠ͳ͍࿩ • MVVMɺMVP….ͳͲͷઃܭͷ࿩

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ࣗݾ঺հ

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ࣗݾ঺հ • @cutmail • ߥҪ ୡ࠸ • ϐοΫΞοϓגࣜձࣾ ٕज़ސ໰ • Android / iOS / GAE / Go

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ΞδΣϯμ • ٕज़ސ໰ͱ͸ • ٕज़ސ໰ͱͯ͠΍͍ͬͯΔ͜ͱ • ٕज़ސ໰ͱͯ͠AndroidΞϓϦ։ൃͰ΍͍ͬͯ Δ͜ͱ • ·ͱΊ

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ٕज़ސ໰ͱ͸

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ٕज़ސ໰ͱ͸ • ٕज़ऀͷ໾৬Ͱٕज़ࢦಋऀ • ٕज़ͷಛఆྖҬͷΞυόΠβʔ • ૊৫ʹର͢ΔΞυόΠβʔ

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ٕज़ސ໰ͱͯ͠ ΍͍ͬͯΔ͜ͱ

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ٕज़ސ໰ͷ࢓ࣄ • ։ൃମ੍ͷཱͯ௚͠ • ٕज़޿ใ • ࠾༻ • ࣾ಺ͷ੍౓࡞Γ • ٕज़ͷબఆ

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։ൃମ੍ͷཱͯ௚͠

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%..άϧʔϓ ϐοΫΞοϓ ωΫετΧϨϯγʔ ͦͷଞ  άϧʔϓձࣾ

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CHIPS

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։ൃνʔϜମ੍ • PM 1ਓ • σβΠφʔ 1ਓ • αʔόʔ 2ਓ • iOS 2ਓ • Android 1ਓ

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ϓϥοτϑΥʔϜ • iOS • AndroidʢະϦϦʔεʣ • Ұ෦Web

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ॳ೔

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ϓϩδΣΫτʹ  ೖͬͯΈͨΒ

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૑ۀظͷΑ͏ͳ։ൃ͕  ߦΘΕ͍ͯͨ

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ޱ಄Ͱͷ΍ΓͱΓ

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୭΋೺Ѳ͍ͯ͠ͳ͍  ։ൃεέδϡʔϧ

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ಉ͡ํ޲Λ  ޲͍͍ͯͳ͍

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࣋ଓੑͷͳ͍։ൃ

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ϚΠϧετʔϯ͕ͳ͍

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ʮઓ৔͔ͳʁʯ

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Ͳ͏͔ͨ͠

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νʔϜϏϧσΟϯά

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߹॓ͷ࣮ࢪ

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߹॓ͷ࣮ࢪ • ΦϑΟεͱ͸͋͑ͯԕ͍৔ॴʹ͋͑ͯंͰ • ਺άϧʔϓʹΘ͔ΕͯंͰҠಈ • υϥοΧʔ෩ΤΫααΠζΛத৺ͱͨ͠ϫʔ Ϋγϣοϓ

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υϥοΧʔ෩ΤΫααΠζ • 3ͭͷ࣭໰Ͱ͓ޓ͍ͷ͜ͱΛ஌Γɺظ଴஋Λ͢Γ ߹ΘͤΔ • ࣗ෼ͷಘҙͳ͜ͱ • νʔϜϝϯόʔ͕ࣗ෼ʹظ଴͍ͯ͠Δͱࢥ͏͜ ͱ • ଞͷϝϯόʔʹظ଴͢Δ͜ͱ

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݁Ռ

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͓ޓ͍ͷظ଴஋Λ͢Γ͋Θͤ Δ͜ͱͰ

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νʔϜϝϯόʔͷ૬ޓཧղ͕  ਐΜͩ

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νʔϜͷ݁ଋྗ͕ߴ·ͬͨ

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։ൃମ੍ͷ੔උ

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։ൃମ੍ͷ੔උ • 2िؒͷεϓϦϯτ • ελϯυΞοϓϛʔςΟϯά • ϓϩμΫτόοΫϩά • ίʔυϨϏϡʔͷಋೖ

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֤ʑ͕͍࣋ͬͯΔλεΫͷ ݟ͑ΔԽ

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λεΫͷՄࢹԽ • TrelloΛಋೖ • EleganttͰΨϯτνϟʔτΛݟΕΔΑ͏ʹ

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ZenHubಋೖ • issue΍ϚΠϧετʔϯΛGitHub಺Ͱ׬݁Ͱ͖ ΔΑ͏ʹ • ͜ΕΛݟͳ͕ΒελϯυΞοϓMTGΛ࣮ࢪ

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ίʔυϨϏϡʔͷಋೖ

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ίʔυϨϏϡʔ࣌ʹϥϕϧΛ͚ͭΔ • [nits] : খ͍͞ࢦఠɻΠϯσϯτ΍typo • [IMO] : In My Opinion ࢲ͸͜͏ࢥ͏͚Ͳผʹ௚͢͜ͱ͸ඞ ਢͰ͸ͳ͍ • [COULD] : Ͱ͖Ε͹௚ͨ͠΄͏͕ྑ͍ • [MUST] : ௚ͦ͏ • [Q] : ࣭໰

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ίʔυϨϏϡʔͷ؍఺ • ͦ΋ͦ΋࢓༷Λຬ͍ͨͯ͠Δ͔ • iOS / AndroidͰۃ୺ʹ࢓༷͕ҧ͍ͬͯͳ͍͔ • ໋໊͕ద੾͔ • ςετ͕ॻ͔Ε͍ͯΔ͔ • ίϝϯτ͕ͳͯ͘΋ཧղͰ͖Δ͔ • ࣮ࡍʹಈ͔ͯ͠Έͯҧ࿨ײ͕ͳ͍͔

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ϦϦʔε಺༰Λ࢒͢ • GitHubͷϦϦʔεػೳΛ࢖ͬͯɺͦͷόʔ δϣϯʹԿΛϦϦʔε͔ͨ͠࢒͢ • Slack͔Βgit-pr-releaseΛ͚ͨͨΔΑ͏ʹͯ͠ ͍Δ • ։ൃҎ֎ͷϝϯόʔʹ͸ϦϦʔεϖʔδΛݟͯ มߋ఺Λ೺Ѳͯ͠΋Β͏

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ٕज़޿ใ

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ٕज़޿ใ • ࣾ಺Ͱ࢖͍ͬͯΔٕज़΍τϐοΫΛ֎ʹൃ৴ ͢Δ • ςοΫϒϩά • Πϕϯτ΁ͷڠࢍɺग़ల

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%..άϧʔϓ ϐοΫΞοϓ ωΫετΧϨϯγʔ ͦͷଞ  άϧʔϓձࣾ

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GAE/Go • TELLER શࠃCM์ө࣌΋GAEͷΦʔτεέʔ ϧͰ༨༟ • ύϑΥʔϚϯε͕མͪΔ͜ͱ΋ͳ͍ • ϩʔϧόοΫ΋όʔδϣϯΛ໭͚ͩ͢

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ࣾ಺Ͱ࢖ΘΕ͍ͯΔ  ٕज़ελοΫΛ၆ᛌͯ͠  هࣄԽ

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֎෦΁ͷΞ΢τϓοτΛ  ૿΍͢࢓૊ΈΛ࡞Δ

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Πϕϯτͷڠࢍ • ձࣾͷٕज़ελοΫʹ͋͏Πϕϯτʹڠࢍ͢Δ • ڠࢍۚͷ֬อ • ڠࢍ͢Δ͚ͩͰͳ͘ɺొஃ΋ґཔ͢Δ

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ΤϯδχΞ࠾༻ͷαϙʔτ

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ΤϯδχΞ࠾༻ͷαϙʔτ • ٕज़ϒϥϯσΟϯά • ଍Γ͍ͯͳ͍ਓࡐͷ੔ཧ/ൃ۷

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ٕज़ϒϥϯσΟϯά • ٕज़ϒϥϯσΟϯά͸࠾༻ϒϥϯσΟϯά • ֎͔Βͷݟ͑ํΛ౿·͑ͯ಺෦Λվળ͍ͯ͘͠ • ॏཁͳͷ͸ද໘͚ͩͰ͸ͳ͘ɺ݁Ռతʹ  αʔϏε͕ྑ͘ͳΔ͜ͱ

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଍Γ͍ͯͳ͍ਓࡐΛ໌֬Խ • ֤νʔϜ͕ࠓͲͷ৬छΛืू͍ͯ͠Δͷ͔ • Ϧιʔεঢ়گ͸ʁ • ืूཁ߲Λ࡞੒͢Δ • Ͳ͏͍͏εϖοΫͷਓ͕ඞཁͳͷ͔

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੍౓࡞Γ

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੍౓࡞Γ • 50%ϑϦʔϧʔϧ • ηϛφʔࢀՃ੍౓ • ϑϨϯυγοϓαϙʔτ • ͓ࢼ͠ब৬੍౓

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50%ϑϦʔϧʔϧ • ۀ຿࣌ؒͷ50%ΛҎԼͷ׆ಈʹ͋ͯͯྑ੍͍౓ • OSS΁ͷߩݙ • ຊͷࣥච • Πϕϯτొஃɺͦͷ४උ • ࠾༻ʹؔΘΔ׆ಈશൠ

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ΧϯϑΝϨϯεࢀՃ੍౓ • ༗ྉͷ֎෦ηϛφʔ΍ΧϯϑΝϨϯεʹࢀՃ Ͱ͖Δ • DroidKaigiɺtry! Swift • ௚ۙͩͱGopherConɺKotlinConfʹϝϯόʔ ͕ࢀՃ༧ఆ

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ϑϨϯυγοϓαϙʔτ • ༏लͳ༑ਓͱͷ͝൧ͷඅ༻Λձ͕ࣾෛ୲ • 1ճʹ͖ͭ1ਓ1ສԁ·Ͱิॿ • ༏लͳϝϯόʔ͸༏लͳ༑ਓΛ஌͍ͬͯΔ͸ ͣ

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͓ࢼ͠ब৬੍౓ • ҆৺ͯ͠ೲಘͯ͠ೖࣾͯ͠΋Β͏ͨΊʹɺస ৬લʹ࣮ࡍʹҰॹʹಇ͚Δ • 1೔~1िؒఔ౓ • ΋ͪΖΜใु΋͓ࢧ෷͍

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ࣾ಺Πϕϯτͷ։࠵ • ϞόΠϧڞ༗ձ • Goձ • ʮΈΜͳͷGoݴޠʯྠಡձ • ϐοΫΞοϓφΠτ

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ϞόΠϧڞ༗ձ • ϞόΠϧΞϓϦΤϯδχΞ͕ू·ͬͯίʔυΛ ಡΜͩΓɺ࠷ۙͷ։ൃτϐοΫʹ͍ͭͯ࿩͢ ৔ • DroidKaigiΞϓϦͷιʔείʔυϦʔσΟϯ άΛͨ͠Γ

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ϞόΠϧڞ༗ձ • ଞνʔϜͷαʔϏεͷίʔυΛಡΜͰɺઃܭ ʹ͍ͭͯ͋Ε͜Ε • ΞʔΩςΫνϟʹ͍ͭͯͷٞ࿦

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Goձ • αʔόʔΤϯδχΞ͕ू·Γɺ֤ϓϩδΣΫ τͷίʔυΛಡΜͩΓɺࠔ͍ͬͯΔ͜ͱ΍ɺ ϗοτͳτϐοΫ΍ઃܭʹ͍ͭͯ࿩͢৔ • ΞϓϦΤϯδχΞ΋ࢀՃOK

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ʮΈΜͳͷGoݴޠʯྠಡձ • 1ষͮͭ࣋ͪճΓͰղઆ • ΞϓϦΤϯδχΞ΋ࢀՃ • αʔόʔͷؾ࣋ͪΛཧղͯ͠  ΋Β͏

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ϐοΫΞοϓφΠτ • ࣾ಺LTձ • ࢿྉ͸جຊతʹͳ͠Ͱ • ௕ͯ͘5෼ • ٕज़Ҏ֎ͷτʔΫ΋Welcome

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Ϟνϕʔγϣϯ • ୯७ʹؾ͍ͮͨ͜ͱΛ൸࿐͍ͨ͠ • খωλΛൃදͰ͖ΔػձΛఏڙ͢Δ • νʔϜؒͰ࿩͢৔Λ࡞Δ • ·ͣ͸ࣾ಺Ͱ࿩͢ͷʹ׳Ε͔ͯΒ֎෦Ͱొஃ ͢Δಓےʹͯ͠΋Β͏

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ٕज़ސ໰ͱͯ͠ AndroidΞϓϦ։ൃͰ΍ͬͯ ͍Δ͜ͱ

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ٕज़ͷબఆ

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CHIPSͰͷϥΠϒϥϦ • Kotlin • RxJava2 • Dagger2 • Android Architecture Component • Lifecycle • Room • Paging

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Handling Lifecycles • Activity΍FragmentͳͲͷίϯϙʔωϯτʹ ؔ͢Δ৘ใΛอ࣋͠ɺΦϒδΣΫτ͕؍ଌͰ ͖ΔΑ͏ʹ͢Δ

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Handling Lifecycles • CHIPSͰ͸Lifecycleͷมߋ࣌ʹExoPlayerͷڍ ಈΛม͑ͨΓ͢Δͷʹ࢖͍ͬͯͨΓ͢Δ

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Room • SQLiteʹΞΫηε͢Δந৅ԽϨΠϠʔΛఏڙ

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@Entity data class Task( @PrimaryKey val id: String, val name: String) { } @Dao interface TaskDao { @Query("DELETE FROM task") fun deleteAll() } Room

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Paging • RoomͳͲͷίϯϙʔωϯτͱγʔϜϨεʹ࿈ ܞͰ͖ΔϖʔδϯάϥΠϒϥϦ

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Paging • PositionalDataSource • RoomΛ࣮૷͍ͯ͠Ε͹ɺ˓͔Β˓݅औಘΈ ͍ͨͳΠϯλϑΣʔεΛࣗಈతʹੜ੒ͯ͘͠ ΕΔ https://developer.android.com/topic/libraries/architecture/paging.html

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جຊతʹGoogle΍ίϛϡχςΟ ओྲྀͷٕज़Λ࠾༻͍ͯ͘͠

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ͦͷଞϥΠϒϥϦ • Firebase Authentication • Firebase Performance • Retroﬁt2 • ExoPlayer • Glide

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CI؀ڥͷ੔උ • Bitrise • Danger • Android Lint • ktlint • Fabric betaͰࣾ಺഑෍ • ৗʹ࠷৽൛͕QAͰ͖Δମ੍ʹ

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Πϕϯτܭଌ؀ڥͷ੔උ • Firebase Analytics →BigQuery → CHATIO • ͲͷϓϩμΫτ΋͜ͷߏ੒ʹ

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௚ۙͷࣄྫ

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ೝূΛஔ͖׵͑ͨ࿩

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ಠࣗೝূ͔Β  Firebase Authentication΁ • ॳճىಈ࣌ʹήετϢʔβʔΛ࡞੒ • ݩʑ͸ಠࣗͷϩδοΫͰϢʔβʔ࡞੒ɺೝূ • ಠࣗOAuth࣮૷

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ಠࣗೝূ͔ΒFirebase Auth΁ firebaseAuthInstance.signInAnonymously() .addOnCompleteListener { task -> if (task.isSuccessful) { observer.onSuccess(task.result.user) } else { val cause = task.exception.toOption() .fold({ RuntimeException("unknown firebase auth error") }, { th -> th }) observer.onError(cause) } } ΞϓϦ͸FirebaseͷtokenΛαʔόʔʹ౤͛Δ͚ͩ

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ೝূ͸Firebase Auth ೝՄ͸ࣗαʔόʔͰ

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ೝূํ๏Λ૿΍͢৔߹͸ Firebase AuthenticationͰ  ಠࣗೝূΛ࣮૷͢Δ https://ﬁrebase.google.com/docs/auth/web/custom-auth?hl=ja  https://developers-jp.googleblog.com/2016/10/authenticate-your- ﬁrebase-users-with.html

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ӡ༻Λָʹ͢Δ ΞʔΩςΫνϟΛબ୒͢Δ

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ӡ༻ΑΓ΋αʔϏε։ൃʹ  ूத͠Α͏

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αʔϏεͷίΞͳՁ஋ఏڙʹ  ஫ྗ͢Δ

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͜Ε͔Β΍Γ͍ͨ͜ͱ

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API Documentͷࣗಈੜ੒ • ιʔείʔυ͔Βࣗಈੜ੒ • ৽͍͠ΫϥΠΞϯτΞϓϦͳͲΛ࡞Δ࣌ʹඞ ਢ

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GAE/GoɺFirebaseΛ࢖ͬͨ αʔϏεج൫ͷ։ൃ • ϘΠϥʔςϯϓϨʔτ • ೝূ΍ϩάͳͲͷجຊతͳίϯϙʔωϯτΛ ໢ཏͨ͠αʔϏεج൫ • αʔϏεͷ্ཱͪ͛Λૣ͘Ͱ͖ΔΑ͏ʹ • ӡ༻΋ָʹ

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• iOS, AndroidͰڞ௨ͷίϯϙʔωϯτͱͯ͠ ੾Γग़ͤΔ΋ͷΛReact NativeԽ

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·ͱΊ

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ٕज़ސ໰ͷ࢓ࣄͱ͸ • ֎෦ɺ಺෦ଟذʹΘͨΔ • αʔϏε੒௕ͷͨΊʹɺ௕ظతͳ໨ઢͰٕज़Λ બఆ͢Δ • ࣾ಺Ͱ࢖ΘΕ͍ͯΔٕज़ελοΫΛັྗʹม͑ Δ • ձࣾͷΧϧνϟʔ࡞ΓʹӨڹ͢Δ

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࠷ޙʹ

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ٕज़ސ໰͔ΒίʔϙϨʔτΤϯ δχΞϦϯά΁ • ΑΓ૊৫ͷ಺෦Λվળ͍ͯͨ͘͠Ίɺ  ίʔϙϨʔτΤϯδχΞϦϯάࣨΛઃཱ • αʔϏεڞ௨ͷج൫ɺ؅ཧγεςϜɺશࣾʹ ඥͮ͘։ൃΛਐΊΔ

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͝੩ௌ͋Γ͕ͱ͏ ͍͟͝·ͨ͠