メルカリカウルの開発気になる？なら話そう！

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ϝϧΧϦ Χ΢ϧͷ։ൃ  ؾʹͳΔʁ  ͳΒ࿩ͦ͏ʂ shibuya.apk #17

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About Me Shinobu Okano @operandoOS Mercari, Inc. Souzoh, Inc.

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No content

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Πϯετʔϧ͍ͯͩ͘͠͞Ͷ

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Souzoh Android Talk https://mercari.connpass.com/ event/63552/

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Android ΞϓϦઃܭύλʔϯೖ໳ https://peaks.cc/archtecture_patterns

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https://peaks.cc/archtecture_patterns ߪೖక੾೔2017೥08݄04೔ 23:59

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ϦϦʔε·ͰͷಓͷΓ • 2݄͘Β͍͔Β࠷ॳͷAndroidΤϯδχΞ͕Χ΢ϧΛ ࡞Γ࢝ΊΔ • 3݄ͷத०͘Β͍͔Βࢲ͕ຊ֨తJOINͯ͠ಈ͖࢝ΊΔ • 5݄຤ʹ͸ग़ͤΔʁͱ͔ͦ͏͍͏ײ͡(͏Δ͓΅͑ • Ͱ͖Δ͔ͳʔ

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๻͕Χ΢ϧʹJOINͯ͠࠷ॳʹ  ΍ͬͨ͜ͱ • Crashlyticsͷಋೖ • Update Android Gradle Plugin 2.3.0 • signingConﬁgͷઃఆ • Travis CIͷઃఆ • Fabric Betaͷઃఆ • CI͔ΒFabric Beta΁ͷΞοϓϩʔυ • dependency updatesͷ௥Ճ

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dependency updatesͷ௥Ճ Gradle PluginͱCIͱԶ https://www.slideshare.net/shinobuokano7/ gradle-pluginci-62464447

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๻͕Χ΢ϧʹJOINͯ͠࠷ॳʹ  ΍ͬͨ͜ͱ • ͛͢ʔࢧԉܥͷλεΫ͹͔ͬΓ • ͍΍·͋͜ʔΏʔͷ͸࠷ॳʹ͕ͬʂͱ΍Δ΄͏ ͕͍͍ͷͩΑ • ։ൃதͷΞϓϦ͕͍ͭͰ΋୭Ͱ΋ݟΕΔΑ͏ʹ ͢Δ • ೝࣝͷζϨΛͳ͘͢

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͓ʁ͜Ε͸σεϚʔν͔ʁ

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ͦΜͳ͜ͱ͸ͳ͍ʂ

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Ͱ΋ݫ͍͠ͷͰ... • ϦϦʔεΰʔϧΛ໌֬ʹ͢Δ • Ͳ͜·Ͱ࣮૷ͨ͠ΒϦϦʔεͰ͖Δ͔ • ϦϦʔεʹ޲͚ͯద੾ͳϚΠϧετʔϯΛઃఆ͢Δ • ϚΠϧετʔϯ͕ऴΘͬͨΒΞϓϦͷ֬ೝձΛ͢Δ (͓͞ΘΓձ) • ϝϯόʔͱձ࿩͢Δ(15෼͘Β͍ͷ೔࣍ఆྫ)

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΋ͬͱԿ͔޻෉͠ͳ͍ͱ։ൃεϐʔυ  ग़ͤΜͧʁ

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͜͏͍͏࣌ͦ͜  ࣮ݧ(νϟϨϯδ)ͯ͠ΈΔ

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࣮ݧͨ͜͠ͱ • ίʔυϨϏϡʔͷഇࢭ • શPull Request Self Merge • ϦϦʔε͔ͯ͠Β΋਺िؒίʔυϨϏϡʔҰ౓΋ͯ͠ͳ͔ͬͨ • ։ൃதͷྫ֎ΛSlackʹྲྀ͢ • ى͖ͨྫ֎Λᐆດͷ··ऴΘΒͤͳ͍ • etc.

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ίʔυϨϏϡʔͷഇࢭ • ೋਓͰAndroid։ൃͯ͠Δ͚Ͳͳͨ͘͠ • ਖ਼௚ίʔυϨϏϡʔΊΜͲͤ͘ʔ • ϨϏϡʔ͢Δ͘Β͍ͳΒίʔυॻ͜͏ͥʂ • ૣ͘ϦϦʔε͠Α͏ͥʂ

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ίʔυϨϏϡʔΛͳͨ͘͜͠ͱͰ • ϓϩμΫτΛૣ͘ϦϦʔε͢Δ͜ͱʹ͸ߩݙͰ͖ͨ • ୹ظతʹΤϯδχΞͷ੒௕Λ٘ਜ਼ʹ͢Δ • ίʔυͷ࣭Λ্͛Δɺ஌Βͳ͔ͬͨ͜ͱΛ஌Δతͳ໘ • ઃܭͲ͏ͳͷΑʁ • େࣄͳͱ͜Ζ͚ͩ࿩͠߹͑͹΄΅໰୊ͳ͍

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ઃܭ • ࠓ͸MVP(Model-View-Presenter) • ݩʑ͸MVVM • ʮMVPʹ͠Α͏ͥʂ͓Ε΍ͬͨ͜ͱͳ͍͚Ͳʂʯͱ్தͰ ࢲ͕ݴͬͯҠߦ • ݁ՌతʹMVPʹͯ͠ਖ਼ղͩͬͨͱࢥͬͯΔ • ͦΜͳʹ࿩͢͜ͱ͸ͳ͍...

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ίʔυϨϏϡʔΛ͠ͳͯ͘΋  େৎ෉ͳ࢓૊Έ • QA͕खް͍ʂ • ϝϧΧϦ΋ι΢κ΢΋QA͕͍͢͝ʂ • ͓͞ΘΓձͰϝϯόʔʹ৮ͬͯ΋Β͏ • ྫ֎Λݟಀ͞ͳ͍ʂ

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ࠓ͸ίʔυϨϏϡʔ  ͯ͠·͢ʂ

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ϦϦʔεલ ίʔυϨϏϡʔ • ϦϦʔε਺೔લʹޱ಄Ͱ·ͱΊͯPull RequestΛϨϏϡʔ͢Δ • 1ͭͷεΫϦʔϯ্Ͱ͋ʔͩ͜ʔͩ࿩͢ͷͰૣ͍ • ͪΐͬͱͨ͠Tips΋ͬ͘͞ͱݴ͍΍͍͢ • ࢀߟ) ίʔυϨϏϡʔΛձ࿩͠ͳ͕Βߦ͏औΓ૊Έ • http://developer.hatenastaff.com/entry/ 2017/06/23/100000

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Danger

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https://github.com/danger/danger http://danger.systems/ruby/

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Dangerͷಋೖ • ࡶʹ͍͏ͱίʔυϨϏϡʔɺPull RequestϨϏϡʔΛࣗಈԽ͢Δ • Ruby or JSͰࣗಈԽͷεΫϦϓτΛॻ͘ • εΫϦϓτ಺ͰPull Requestͷ৘ใ͕औΕΔͷͰࣗಈԽॻ͖΍͍͢ • CIʹ΋ಋೖ͠΍͍͢ • νΣοΫ͍ͨ͠ϓϩδΣΫτࣗମͷݴޠ͸ͳΜͰ΋͍͍

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Pull RequestͰ͜͏͍͏͜ͱ  ͋ΔͰ͠ΐʁ • ࢓༷νέοτͷϦϯΫష͍ͬͯͩ͘͞ • ϚΠϧετʔϯ͚͍ͭͯͩ͘͞ • ϥϕϧ͚͍ͭͯͩ͘͞ • etc.

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ϨϏϡʔ͢Δଆ΋͞ΕΔଆ΋ ਏ͍

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Dangerʹ೚ͤΔ • ϚΠϧετʔϯ͕ઃఆ͞Εͯͳ͚Ε͹ίϝϯτ͢Δ • ϥϕϧ͕ઃఆ͞Εͯͳ͚Ε͹ίϝϯτ͢Δ • ϦϦʔεϒϥϯνͩͬͨΒϦϦʔεखॱίϝϯτ͢Δ • etc.

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Gemﬁle source 'https://rubygems.org' gem 'danger'

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has_milestone = github.pr_json["milestone"] != nil warn "͋ΕΕʁϚΠϧετʔϯ͕ઃఆ͞Εͯͳ͍Αʁ" unless has_milestone warn "WIPͳͷʁ͸΍͘ऴΘΔͱ͍͍Ͷʔʂ" if github.pr_title.include? "[WIP]" or github.pr_labels.include?("WIP") if github.branch_for_head.start_with?(“release/") then message "ҎԼͷWikiͷखॱʹैͬͯ҆શʹϦϦʔε͠Αʔ :rocket: \nRelease Workflow” end if github.branch_for_head.start_with?("release/") then warn "mapping file͕มߋ͞Εͯͳ͍͚Ͳେৎ෉͔ͳʔʁ" unless git.diff_for_file("app/mapping/mapping.txt") end Dangerﬁle

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Dangerʹ೚ͤΔ

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DangerʹAndroid LintΛಋೖ͢Δ • ؆୯! • ͸΍͍ʂ • ΍͍͢ʂ • ͏·͍ʂ • ͏͍͟ʂ

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Gemﬁle source 'https://rubygems.org' gem 'danger' gem 'danger-android_lint'

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Dangerﬁle android_lint.gradle_task = "app:lintDebug" android_lint.report_file =   "app/build/reports/lint-results-debug.xml" android_lint.filtering = true android_lint.lint(inline_mode: true)

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PRʹ݁ՌΛίϝϯτͯ͘͠ΕΔ

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PRʹ݁ՌΛίϝϯτͯ͘͠ΕΔ

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https://github.com/operando/ AndroidDangerSample/ Sample Android + Travis CI + Danger

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DangerͰ͜Μͳ͜ͱ΋Ͱ͖ͦ͏ʂ • File DiffΛݟͯͲͷػೳʹӨڹ͢ΔPull Requestͳͷ͔ڭ͑ͯ͘ΕΔ • QAʹ΋ӨڹൣғΛ఻͑΍͘͢͢Δ • ӨڹൣғͷӕΛ͚ͭͳ͘͢Δʂʂ • ςετίʔυॻ͍ͨΒ๙Ίͯ͘ΕΔʂ • ϥϯμϜͰͱʹ͔͘๙Ίͯ͘ΕΔʂ • etc.

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։ൃதͷྫ֎ΛSlackʹྲྀ͢ • CrashlyticsͷSlack࿈ܞͩͱNew Crash௨஌͸͘Δ • ͚ͩͲɺͦΕҎ߱ಉ͡ྫ֎͕ى͖ͯ΋௨஌͸͜ͳ͍ (͸ͣ) • ྫ֎͕ૹΔͨͼʹSlackʹ௨஌ͯ͠΄͍͠ʂ • ࣗ࡞͢Ε͹ͬ͘͞ͱͰ͖Δ

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։ൃதͷྫ֎ΛSlackʹྲྀ͢

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ྫ֎ΛՄࢹԽͰ͖ͨʂ • νʔϜϝϯόʔͷखݩͰى͖ͨྫ֎͕͙͢ʹΘ͔ΔΑ͏ʹͳͬͨʂ • ى͖ͨྫ֎Λͦͷ··΄͓͍ͬͯͯɺ࣮͸…Έ͍ͨͳ͜ͱ͸  ͳ͘ͳͬͨ • Slackʹྲྀͯ͠ΔͷͰΈΜͳݟ͑Δ • ͋ʔͦͷྫ֎ͳʔΘ͔Δʔͱ͍͏΍ͭΛҰॹʹ։ൃͯ͠Δϝϯόʔ ͕ىͯ͜͠ΔͱͳΜ͔Ұਓ͡Όͳ͍ײ͋ͬͯΑ͍☺ • ΄ͬ͜Γ͢Δ☺

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Crash-Free User • ॳճϦϦʔεͰΧϝϥͷ໰୊Ͱࠔͬͨ...  (ϨϏϡʔͰ΋ݟ͔ͭΒͳ͍໰୊) • ϦϦʔεͨ࣍͠ͷ೔ʹݪҼಛఆͯ͠मਖ਼ • ͦΕҎ߱͸ 99.5%͘Β͍ҡ࣋ͯ͠Δ • Mobile Vision APIͷCamera͕ਏ͍...

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͋ͱ͸ࡶʹ࣮૷ͷ࿩

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Լλϒ

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Լλϒ͑͑Ͱ☺

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Լλϒͷ࣮૷ • ࣗ࡞ Լλϒ(Not CustomView) + ViewPager • λϒ੾Γସ͑ͷදࣔ͸ViewPagerͷϖʔδΛ ੾Γସ͑Δ͚ͩͳͷͰૣ͍ • View TreeΈͨΒϠόͦ͏͔ײ͡ʹͳͬͯΔͷ Ͱͥͻਅࣅͯ͠΄͍͠

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ͳΜͰBottomNavigationView ࢖Θͳ͍ͷʁ ԼλϒͷσβΠϯతͳࣄ৘Ͱ͢

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Լλϒ + ViewPager͕͜͜ਏ͍Α • ͦͦ͜͜ϝϞϦ΋࢖͏ • λϒͷ਺ͷPager͸ৗʹอ࣋(setOffscreenPageLimit) • λϒ੾Γସ͑ͨ࣌͠ͷToolbarͱ͔ͷ੍ޚ͕஍ຯʹେมͩͬͨ • BottomNavigationView࢖ͬͯ΋ಉ͡ʁ • ActivityΛอ࣋͠ͳ͍ʹऑ͍ • ஌Δ͔ • λϒؒͷεςʔλεಉظ • Static Subject͓͡͞Μ

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API • ΞϓϦ಺Ͱ͸Χ΢ϧ APIͱϝϧΧϦ API྆ํΛୟ࣮͘૷͕ ೖͬͯΔ • ϝϧΧϦ APIΛRetroﬁtʹ߹ΘͤΔͷ͕ۤ࿑ͨ͠… • Responseͷܕ͕͖ͬͪΓܾ·Βͳ͍ • MercariResponseConverterര஀ʂ • Χ΢ϧ API͸JSON RPC

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JSON RPC • JSRON RPC Clintࣗ࡞ͯ͠·͢ • JSRON RPC ClintͷίΞ෦෼͚ͩϥΠϒϥϦԽ • ޷͖ͳHttp Clientͱ߹Θͤͯ࢖͑ΔΑ͏ʹͯ͠Δ • ι΢κ΢ͷଞͷΞϓϦͰ΋࢖͑ΔΑ͏ʹ • ۀ຿࣌ؒதʹ͍ͬͨ͡Γͯ͠·͢s

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gummi https://github.com/operando/ gummi

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gummi • ࠷ۙ 2.0ग़͠·ͨ͠ • 1.0͸Χ΢ϧͰಋೖࡁΈͰͪΌΜͱಈ͍ͯΔ • 2.0͸…ࢼ͢PR͸ࣾ಺Ͱग़ͯ͠Δ • ͪΌΜͱಈ͍ͯΔͬΆ͍ • ଟ෼େৎ෉ͩΖ͏...

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Guild • https://github.com/operando/Guild • Simple java tuples • JSON RPCͷResponseΛTupleͰϥοϓͯ͠Δ

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JSON-RPC-OkHttp-Logging- Interceptor • https://github.com/operando/JSON-RPC- OkHttp-Logging-Interceptor • Χ΢ϧͰ࢖͓͏ͱࢥͬͯ࡞͚ͬͨͲ  ࢖ͬͯͳ͍ͬ͢...

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ผʑͷAPIΛ࣮ߦ͢Δͱ͍͏͜ͱ͸... • ผʑͷAPIୟ͘ͷͰ଴ͪ߹Θ͕ͤඞཁ • JSON RPC(Χ΢ϧ) + REST API(ϝϧΧϦ) • JSON RPC͚ͩͳΒ΄΅଴ͪ߹Θͤඞཁͳ͍ • API Clintͷ໭Γ͸RxJavaͷSingleʹ౷Ұ • ଴ͪ߹Θͤ͸Single.zip

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RxJava • ։ൃॳΊ͸RxJava 1ͩͬͨ • ్தͰRxJava 2ʹ͍͑΍ʂͰஔ͖׵͑ • ੾Γସ͑લʹRxJava 2ࣾ಺ษڧձΛ΍ͬͨ • ͦͷλΠϛϯάͰAPI Clintͷ໭Γ΋Single΁Ҡߦ

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RxJava1 → RxJava2΁ͷҠߦ

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RxJava1 → RxJava2΁ͷҠߦ ࢀߟ • http://in.fablic.co.jp/entry/ 2017/04/27/110000 • https://github.com/ReactiveX/RxJava/ wiki/What%27s-different-in-2.0 • http://reactivex.io/RxJava/2.x/javadoc/

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ແݶͬΆ͍ViewPager • ࣮͸༗ݶͳ΍ʔͭʔͶ • RecyclerTabLayout͓ੈ࿩ʹͳΓ·ͨ͠ • https://github.com/nshmura/ RecyclerTabLayout • PagerAdapterͷcount্͛Ε͹͑͑Μ΍ʂ

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๭ϑϦϚΞϓϦͷແݶͬΆ͍ ViewPager • εΫϩʔϧͯ͠ɺҰप͢ΔͱεΫϩʔϧ͕  Ұ൪্ʹ໭ͬͯΔʂʁ • ݩʑݟͯͨ΋ͷ͕Θ͔Βͳ͍… • ͑ɺͳʹ͜Ε

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ϝϧΧϦɹΧ΢ϧͷແݶͬΆ͍ ViewPager • εΫϩʔϧͯ͠ɺҰप͖ͯͯ͠΋ಉ͡ঢ়ଶ͕อ࣋͞ΕͯΔʂʁ • Page͕ഁغ͞ΕΔ࣌ʹStateΛอ࣋͢Ε͹؆୯ • RecyclerViewͷҐஔ͸ LinearLayoutManager#ﬁndFirstVisibleItemPositionͰอ࣋ • LinearLayoutManager#scrollToPositionWithOffsetͰҐஔ Λ໭͢ • حົͳ࣮૷͚ͩͲϢʔβͷརศੑ͕༏Δ

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͗͢ΐ͍

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Data Binding • ࢖ͬͯ·͢ • View΁ͷ൓өॲཧΛUtilతͳѻ͍Ͱ  custom binding logicΛ࡞ͬͯΔ • XML಺ʹ৚݅ࣜ͸ॻ͔Εͯͳ͍ • Two-way bindingతͳػೳ͸࢖ͬͯͳ͍

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ΞϓϦ಺ͷը૾ • ΄΅Vector Drawable • Ϛδָ࠷ߴ • Ұ෦Ͱ͔͍ը૾͚ͩWebP

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͜ͱΓΜ

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͜ͱΓΜ...͜ͱΓΜ...͜ͱΓΜ...

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Java 8 Backport API • Lightweight-Stream-API • https://github.com/aNNiMON/Lightweight- Stream-API • StreamͱOptional͸Զʹ೚ͤΖʂ • Retrolambda • ThreeTen Android Backport

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Analytics • Firebase Analytics

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Push௨஌ • FCM + Firebase Notiﬁcation • Firebase Notiﬁcation͸ͪΌΜͱ  υΩϡϝϯτಡΜͰ࣮૷ͨ͠ํ͕͍͍

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Crash Reporting • Crashlytics • Firebase Crash Reporting • Firebase Analyticsͷϩά͕ग़ΔͷͰͲΜͳ ߦಈΛͯ͠Ϋϥογϡͨ͠ͷ͔աఔ͕  Θ͔ͬͯ࠷ߴ

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ϝϧΧϦͱͷؔΘΓ • ϝϧΧϦͱΧ΢ϧ͕࿈ܞ͢ΔͨΊʹϝϧΧϦଆʹ࣮૷͕ඞཁ • ͓ɺ͓Ε͕࣮૷͢Δʔʂʂ • ࣮૷͠·ͨ͠ʔ • ཉ͘͠ͳͬͨਓ͕࣮૷͢ΔελΠϧʂ • ࣮૷ͯ͠΋Β͏͜ͱ΋͋ΔΑ☺