내가 안드로이드 개발자가 되었을 때 아무도 알려주지 않은 것들(+MVP / MVVM 이야기) - DroidKnight 2018

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ղо উ٘۽੉٘ ѐߊ੗о غ঻ਸ ٸ ইޖب ঌ۰઱૑ ঋ਷ Ѫٜ Speaker. ъࢎܕ

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Who is this guy? • ҃۱ 18֙ର SW ূ૑פয (ݽ߄ੌ, ߔূ٘, ਢ ೐ۿ౟ূ٘ ׮ ೧ࠆ) • ತস ੹ޙо: ޷Ҵীࢲ ೠ ߣ, ೠҴীࢲ ف ߣ झఋ౟স ೮׮ ݈ইݡ਺ • ੌࠄ झఋ౟সীࢲ ݽ߄ੌ ׸׼ ইఃఫ౟۽ Ӕޖ ઺ • ӝ۞ӝ ইࡅ: ೠҴী ইղ৬ ف ইٜҗ ъই૑৬ Ҋন੉ܳ فҊ ੓਺ • ӓೠ ѐߊ: അ੤ 6ѐ Android / iOS জ੄ ܻ׏঴ਸ ׸׼઺

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• ࢸ݀ೠ૑ 4.5֙ ػ झఋ౟স • ੌࠄ ୭؀੄ ਭই ੿ࠁ ࢲ࠺झ ࠁਬ • but ت਷ ਬ஖ਗ Үࢎ ೻٘೴౴ ࢲ࠺झ۽.. • ৻ࠗ ై੗ ੹ഃ হ੉ ࣽ੉੊੄ ੤ై੗݅ਵ۽ Ҋࣘ ࢿ੢઺ • ী࠺झ(ੌࠄ੄ о۽ࣻӡ?)੄ Ӕࢎೠ 9க ࠽٬ਸ ా૩۽ ॹ • Business-aware Engineerٜী ੄೧ ਑૒੉ח ഥࢎ • ঠӔ Ә૑ / ോੌ Ӕޖ Ә૑

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द੘ೞӝ ੹ী... • ݽٚ ղਊਸ ೠ ߣী ੉೧ೞ૑ ޅೞ࣊ب ҡଳणפ׮ • о߶਍ ӝ࠙ਵ۽ ٮۄয়दݶ ؾפ׮ • ೒ۖಬ ઺݀੸: ࢚׼ࣻ ղਊ਷ iOSীب Ӓ؀۽ ੸ਊ оמ೤פ׮ • ࠂण оמ: ठۄ੉٘ ੹୓ ղਊ਷ ইې ݂௼ীࢲ ׮਍ ߉ਵप ࣻ ੓णפ׮ • https://speakerdeck.com/saryong/mvvm-iyagi-droidknight-2018

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Buckle Up!

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Chapter 1. ࢲۿ

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ݽٚ ࠺ӓ੄ द੘ • যוզ ੉ࢎש੉ աܳ ઑਊ൤ ࣑ࠗܰ׮...

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ୡࠁ ݽ߄ੌ ѐߊ੗੄ Ҋҵ࠙ై • Device/version fragmentation: пয়ח ೮঻૑݅, ޖ঺ਸ ࢚࢚ೞٚ উ٘۽੉٘ח ৘ӝ஖ ޅೠ Ҕীࢲ ٍాࣻܳ ஘׮. • ੉ લੌ ֈ੄ ࠺زӝ: оՔঀ਷ ࢤп೮؍ Ѫҗ ੹ഃ ׮ܲ ߑೱਵ۽ ۽૒੉ प೯ػ׮. ӒѪب ೦࢚ ੤അغח Ѫب ইפ׮. • ঌ׮оب ݽܳ Life Cycle ޙઁ: যڃ ҃਋ח ౠ੿ Fragmentо द੘ೞח द੼ਸ ੟ইղӝ ࠛоמ೧ࠁ੉ח ҃਋о ੓׮. ೞ೙ ઁੌ ઺ਃೠ ചݶীࢲ.. • ҳӖ੉ ޥо ࢜۽਍ Ѧ ղ֬ਸ ٸ݃׮ ੉ઁח ૞ૐࠗఠ դ׮. ੓ח Ѫࠗఠ ઁ؀۽ ખ جইоѱ ٜ݅ۄҊ!!  ଵҊ: Fxxx you Android Framework https://medium.com/@drinfo/fuck-you- android-framework-ddbb02c4ae48

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ೞ૑݅.. উ જ਷ ੌ݅ ੓ח Ѥ ইפ঻׮.

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୷ೞ೤פ׮! ઺ә ѐߊ੗о غ࣑णפ׮.

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ૌѢ਍ ۨ߰স ࢤഝ • ৔য ੗ܐ۽ ׀ਸ جܻݶ ੄৻۽ ஘੺ೞҊ ੗ࣁೠ ੿ࠁٜ੉ ݆׮. झఖয়ߡ೒۽, ݆ࣻ਷ ౚషܻ঴ٜ.. • যଧযଧ ೞ׮ࠁפ ֢ೞ਋ب ࢤ҂׮ • উ٘۽੉٘ ߡ੹߹ ؀୊ߨ, ۄ੉೐ࢎ੉௿ ؀਽, ա݅੄ ٣ߡӒ ֢ೞ਋, ߑয੸ ௏٬, ... • Kotlin - ࠺Ү੸ ੸਷ ֢۱ਵ۽ ࢜۽਍ ঱যܳ ߓਕ ௏٬ೞח ੤޷ب ॕॕ

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Ӓ۞ա...

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ҍ ׮оয়ח ठۢ೐ • ੉੹җ э਷ ࣘب۽ח प۱੉ ט૑ ঋח׮ • ੋఠ֔ী ୡә ੉࢚ ࣻળ੄ ੗ܐח Ѣ੄ হ׮ • ҡଳ਷ ੗ܐܳ ଺ও׮ रਵݶ ցޖ য۰ਕ Ѣ੄ ࢶޙ׹ ࣻળ.. ؀ױೠ Ѥ ঌѷח ؘ ؀୓ ޤۄח ૑ ݽܰѷ׮. • ޖ঺ࠁ׮ ઱߸ী ޛযࠅ ࢎۈ੉ হ׮. ղо ੜ ೞҊ ੓ח૑ ঌ ӡ੉ হ׮

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ղо উ٘۽੉٘ ѐߊ੗о غ঻ਸ ٸ   ইޖب ঌ۰઱૑ ঋও؍ Ѫٜ:  ־ҵо ৖ীࢲ ஘੺ೞѱ ঌ۰઱ݶ   ଵ જওਸ Ѫ э਷ ૕ޙٜ੉ ੓׮.

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Clean Architecture -   ѐߊ੗੄ ҳਗ੗ੋо, ࢤࢎۈ ੟ח ࢚ࣿੋо? • ইפ.. ೞۄח ѱ ৵ ੉ۧѱ ݆ই?! • ׮ٜ ઺ਃೞ׮Ҋٜ਷ ೞחؘ.. ઁ؀۽ ॳח ࢎۈ਷ ߹۽ উ ࠁੋ׮. • زӒۆ җ֘ Ӓܿ ݈Ҋ ೧઴ ফӝח হפ?

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MVVM, ԙ ೧ࠁҊ रणפ׮! • Ӕؘ যଧ೧ঠೡ ઴ ݽܰѷ׮. • ॳݶ ଵ જ׮חؘ.. ցޖ ࠂ੟ೞ׮. • ৘ઁٜ਷ ݆਷ؘ, ׮ٜ ઁпп੉׮. ޖट ইఃఫ୊о ੉ۧѱ ੿೧૓ ѱ হয?

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MVP.. ઁ؀۽ ॄࠁҊ र׮. • ੌױ MVVMࠁ׮ח ए਍ Ѫ э׮. • ୊਺ীח જ਷ Ѫ эওחؘ..   ೐۽ં౟ܳ ૓೯ೞ׮ࠁפ ژ ׮ܲ ஶ౟܀۞ܳ ٜ݅Ҋ ੓ח Ѫ э਷ ӝ࠙਷ ৵ੌ ө..

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RxJava: somebody help! • য۵׮! ഁтܽ׮! ־ҵо ખ ب৬઻!! • ੗ݒಿ LiveDataח ખ ए਍ Ѫ э਷ؘ ӒѪ݅ ыҊח গݒೠ ٠ب..

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How the fxxx can I inject dependency? • ੄ઓࢿ ઱ੑ.. ୊਺ূ ए਍ Ѫ эওחؘ.. • ՘হח decision making੄ োࣘ - оݶ т ࣻ۾ ౠ੿ ੋझఢझী ؀ೠ injectionਸ যڌѱ ೧ঠ ബҗ੸ੋ Ѥ૑ ցޖ ഁтܽ׮.

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Test-Driven Developement:   ೞݶ જ׮חؘ.. ଵ જ׮חؘ.. • Ӓ ݆Ҋ ݆਷ ਬ׫ పझ౟ ౚషܻ঴ٜ ઺ীࢲ पઁ ࢚ਊ ೐۽ં౟ ࣻળ੄ ਬ׫ పझ౟ܳ ݅٘ח ߨਸ ঌ۰઱ח Ѥ ೞաب হ׮. • જ׮ח Ѣ ׮ ࡤੋѢ ইջ?

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઱ചੑ݃ী ࡅ૓ दפয ѐߊ੗੄ ੹ഋ੸ ૐ࢚ • ࠺ҙ઱੄: ই, ӒѢ? ࢜۽਎ Ѫب হח Ӓր ਬ೯੉ঠ.. Ӓ۠ Ѣ হযب ੉ઁө૑ ੜ ѐߊ೧৳׮Ҋ. • ౹یӈ ૐറҵ: ޤ ࢜۽਍ ѱ ա৳׮Ҋ? য়ט ׼੢ ੸ਊ೧ࠁ੗. • ో ݅מ઱੄: ॶ ઴ ইח ో, ঌҊ ੓ח ۄ੉࠳۞ܻ੄ ं੗о ҍ प۱੉׮? • Low-hanging fruit: ए਍ ޙઁী݅ ૘଱ೞӝ

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Chapter 42.   উ٘۽੉٘ܳ ৈ೯ೞח  ൤஖ೞ੉ழܳ ਤೠ উղࢲ

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ѐߊ੗੄ ѐࢿী ٮۄ   ݆਷ झఆ ౟ܻо ੓૑݅.. Ӓېب ੉ ف о૑о ઺ਃೞ׮Ҋ ࢤп೤פ׮.

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1. Solution Provider • ঌҊ્ܻী ؀ೠ Ө਷ ੉೧: ׮ܲ ࢎۈ੉ۄݶ ҳഅೞ૑ ޅೡ Ѫ э਷ Ѫਸ, ׮ܲ ࢎۈࠁ׮ ف ߓח ࡅܰѢա ੘਷ ࢎ੉ૉ۽ ز੘ೞѱ ٜ݅ ࣻ ੓ח ࢎۈ • Kotlin ژח Java ঱য੄ semantics੄ Ө਷ ਗܻ৬ ঱য ࢸ҅ ୍೟ী ؀ೠ ੉೧ • Dalvik੄ ز੘ ਗܻী ؀ೠ ੉೧ • Activity / Fragment੄ ઺ਃೠ ز੘ਸ ೒ۖಬ ௏٘ ۨ߰ীࢲ੄ ੉೧ • উ٘۽੉٘о ചݶਸ ۪؊݂ ೞח ݒழפ્੄ ੉೧ • …

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2. Architect • ղ ೐۽ં౟ܳ, рױೠ README.md ౵ੌ ৻ী ইޖ ࢸݺ হ੉ب ׮ܲ ѐߊ੗ ীѱ ੋࣻੋ҅ೡ ࣻ ੓׮ • ղ ௏٘ܳ 1֙ ٍী ׮द ࠌਸ ٸ ҍ߄۽ ੉೧ೡ ࣻ ੓׮ • ௾ ӏݽ੄ ҳઑ ࣻ੿ب 1~2ੌ ղী ೧յ ࣻ ੓ਸ ੿ب۽ ਬোೞѱ ҳઑܳ ݅ٚ׮ • Jr ূ૑פযীѱ റࣘ ௏٬ਸ উबೞҊ ކٶ ځֈѹب ؼ ࣻળਵ۽ ӝࠄ ҳઑо ѼҊೞѱ ੘ࢿೠ׮. ޖ঺ࠁ׮.. ੜޅػ ߑधਵ۽ ҳഅೞӝо ݒ਋ য۵ب۾ ҳઑ ܳ ٜ݅ ઴ উ׮

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উ٘۽ݫ׮ܳ ೻ݒח ઺ә ѐߊ੗ٜਸ ਤೠ উղ

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द੘੉ ߈ • ࠺ҙ઱੄ܳ ߡܻҊ ੌױ ࠗ٭ഃ ࠁࣁਃ! • ೧ࠁ૑ ঋਵݶ ੉೧ೞӝ য۰਍ ѐ֛੉ ݆਺ • द੘਷ ੄৻۽ ए਑: Ѣ੄ ݽٚ ࠙ঠীࢲ ੑޙਊ ౚషܻ঴ਸ औѱ ଺ਵप ࣻ ੓ ਺

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–George Bernard Shaw “ف ࢎۈ੉ п੗ ыҊ ੓ח ࢎҗ ೞաܳ Үജೠ׮ݶ   ৈ੹൤ ೞաঀ੄ ࢎҗ݅ ыҊ ੓ਸ Ѫ੉׮. ೞ૑݅ ই੉٣যܳ Үജೞݶ п੗ ف ѐঀਸ ыѱ ػ׮.”

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ҕਬ੄ ൨ • ֢ೞ਋ٚ Ҋ޹੉ٚ ݈ೡ Ѣܻо ࢤ҂׮ݶ, ׼न੄ ૑धਸ Բળ൤ ҕਬೞࣁਃ. • ࠺तೠ ҙबࢎ੄ ূ૑פযٜਸ Բળ൤ ݅աࠁࣁਃ. • ࠶۽Ӓח যڄөਃ? • ઱੄: झ௼ܽࢫਵ۽ بߓೞח tutorial, ױࣽ ࢸ஖ߨب જ૑݅.. ӝ৴੉ݶ ੗न੄ ࢤп੉ ٜযр Ӗ੉ झझ۽ীѱب ة੗ীѱب ؊ ب਑੉ ؾפ׮.

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ੌࠄ੄ ҃਋ • ࠶۽Ӓܳ ాೠ ҕਬо ੌ࢚ച: Qiita, Hatena Blog • ҕࠗഥ: ઱۽ ૑৉ ױਤ੄ ࣁ޷ա. eg. Sibuya.apk, Akiba.swift, ... • Moku-moku meeting: Ӓր п੗ ௏٬ ݽ੐  1.5 ~ 2दр ѐ߹ ੘স റ যڃ ੘সਸ ೮ח ૑ ੗ی/Ҋ޹/ઑ঱ ա׃ • Network Party  ੗ӝо ҳഅೠ ইఃఫ୊, పझ౟ ١ ҳ୓੸ੋ ࠗ࠙ী ؀೧ࢲ ૑धਸ Үജೞח ݽ੐

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ୡәࠗఠ Ҋәө૑ ׮নೠ ߊ಴: 10~15࠙ঀ ՘աݶ 1.5दр زউ ֎౟ਕ௼ ౵౭

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ழ߁२ • ޷٣ষ ࠶۽Ӓ  https://medium.com/@justfaceit • 5ਘ 5ੌ ҕѐؾפ׮. • ݽ߄ੌীࢲ੄ TDD, MVVM, DDD, DI ١ী ؀೧ࢲ प૕੸ੋ ղਊਸ ҕਬೞҊ ੗ ೤פ׮.

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Chapter 3.   MVP & MVVM

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MVC is not evil • Modelҗ Viewח ੌઙ੄ ۨҊ ࠶۟: Model(+ Domain) ҅கীࢲח ࠺ૉפझ ۽૒ਸ, View ח UI۽૒ਸ ઁҕ. • Controllerח ۨҊ ࠶۟੄ ઑ݀ਸ ׸׼. • Cח যڃ Viewܳ ࠁৈ઴ Ѫੋоܳ Ѿ੿೧ࢲ Modelীࢲ ߉਷ ؘ੉ఠܳ View۽ ֈѹષ. • ӒܻҊ ী۞ܳ যڌѱ ࠁৈ઴૑ܳ Ѿ੿೧ࢲ View۽ ֈѹષ

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৵ Android MVCח աࢂо? • ݽ߄ੌ ജ҃੄ ޙઁ: ࠂ੟ೠ ࠺زӝ ୊ܻ, ۄ੉೐ ࢎ੉௿ ୊ܻ • উ٘۽੉٘੄ ޙઁ: View - Controller ܻ࠙о গݒೞ׮. • Fat Activity: Activity-Fragmentী ցޖ ݆਷ ۽૒੉ ٜযр׮. • Unit Testܳ ٜ݅ӝо ݒ਋ ө׮܂׮. • Ӓ Ѿҗ == ୨୓੸ դҴ • ୭ঈ੄ оةࢿ: ੌ੿੉ ә߅೧ઉب ׮ܲ ূ૑פযীѱ ب਑ਸ ਃ୒ೞӝ য۵׮.   ࢸݺೞח ѱ ؊ झ౟ۨझۄ.. ׼୭ ղо ࠊب ഁтܻחؘ যڌѱ ࢸݺਸ.. • ೞաೞա੄ ௿ېझٜ੉ ցޖ ݆਷ ৉ೡਸ ׸׼ -> ਬ૑ࠁࣻ ਊ੉ࢿ, ࣻ੿ಞ੄ࢿ, оةࢿ ١ ݆਷ ࠗ࠙ীࢲ ஂডೠ ௏٘о غߡܿ

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Model-View-Presenter? • 90֙؀ ઁউ, 2006֙ Martin Fowler੄ ࣗѐ۽ օܻ ঌ۰૗  ଵઑ: GUI Architectures  https://martinfowler.com/eaaDev/uiArchs.html • ࢎप উ٘۽੉٘ ୡӝࠗఠ ҳ੹ਵ۽ ੹೧ઉ ৳؍ ইఃఫ୊ • Viewח ࠺ૉפझ ۽૒ী ҙ۲ػ ࠗ࠙ਸ ҙৈೞ૑ ޅೞب۾ ܻ࠙, Presenter ۽ ֈӣ

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Presenter View Model ࢎਊ੗ ੑ۱ਸ ాࠁ ؘ੉ఠ јन ਃ୒ ؘ੉ఠ ߸҃ ాࠁ ࠭ ߸҃ ਃ୒

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MVP੄ ੢੼ • Fat activity/fragment ߑ૑ • ੸੺ೠ ৉ೡ(responsibility)੄ ܻ࠙۽ ੋ೧ ࣗझ оةࢿ + ಿ૕੉ ز߈ ࢚थ • ೒ۖಬ ੄ઓ੸ੋ UI ୊ܻח View ଃਵ۽ ܻ࠙೮ӝ ٸޙী Presenterח औѱ పझ౟ ੘ࢿ੉ оמ • Clean Architecture৬ 1:1 mapping оמ. CAܳ Ӓ؀۽ ଻ਊೞݶ ࢸ҅ ҙ۲ ֢۱ب ୭ࣗച

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What is not MVVM? • MVVM੄ ౠ૚਷ Life Cycle੉׮? • Android Architecture Component੄ ౠ૚ੌ ࡺ • Data Binding? - ೙ࣻח ইפա ࢎਊೞݶ ࢤ࢑ࢿী ഛपೠ ب਑੉ ؽ • RxMVVM? - ৉द ೙ࣻח ইפ૑݅.. Rx হ੉ח ݒ਋ ࠛಞೣ • ਊযীࢲ য়ח ഒۆ: ViewModel਷ গୡী ੜޅػ ѐ֛੉׮? • Modelҗ э੉ ੘਷ ױਤ۽ ଂѐઉ੓૑ ঋ਷ؘ׮, ాनী׮ ߹ ѱ ׮ ٜযо੓ח ഋకۄ য়೧ೡ ࣻ ੓਺ • Viewܳ ਤೠ Model(Entity)੉ۄח ѐ֛, ױߑೱ presenterۄח ف ѐ੄ ѐ֛ਸ, ViewModel੉ۄח ೞա੄ ੉ܴਵ۽ ыҊ ੓਺

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M-V-ViewModel? • ৉द ݃౯ ౵਎۞੄ Presentation Domain Separation (PDS)о दୡ • 2004֙ ࣗѐػ Presentation Model੉ ਗഋ • ଵઑ: https://martinfowler.com/eaaDev/PresentationModel.htmlɹ • Microsoftীࢲ ୊਺ ҳഅೣ • ViewModel: Uni-directional Mediator • Presenter৬ ݒ਋ ਬࢎೞա, ViewModel਷ Viewܳ ઁযೞ૑ ঋ਺ • Viewח ViewModelਸ ഐ୹ೞغ, Ѿҗח Callback / Observable ഋక۽ ߉਺

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http://kyubid.com/blog/understanding-mvvm-on-android-tutorial-05-introduction-to-reactive-programming-with-rxjava/

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MVVM vs MVP: ষ݃о જই, ইࡅо જই? • ل ׮ ഴܯೠ ҳઑ. ঑ب੸ੋ ਋ਤח হ਺ • ٮۄࢲ ੉റ੄ ࢸݺب ݒ਋ ࢚؀੸੉ݴ, ೐۽ં౟ ࢿѺী ٮۄ ׮ܰѱ ߉ইٜৈ ૕ ࣻ ੓਺

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MVP੄ ࠺Ү਋ਤ • द੘ೞӝо औ׮. ੌױ ӝઓ ஶ౟܀۞੄ ۽૒ٜਸ ో੄ refactor ӝמਵ۽ ୶ ୹(extract method)೧ࢲ Presenter۽ ৤ӝח Ѫࠗఠ द੘ೞݶ ؽ • ӝઓ ೐۽ં౟ܳ Ҋ୛ঠ ೞח ҃਋:  Legacy code੄ ࠙۝੉ ݆Ѣա, ҳઑ ѐࢶী ઱য૓ दр੉ ݒ਋ ૣ਷ ҃਋ MVPо ؊ ਬܻ • Rxҕನૐ੉ ੓ח ҃਋:  RxJavaܳ উ ॄب ഴܯೠ ҳઑܳ ٜ݅ ࣻ ੓׮. (ޛۿ RxJavaܳ ॳݶ ؊ જ ਷ ௏٘ܳ ૢ ࣻ ੓਺)

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MVVMח? • ୡӝ ૓ੑ੢߷਷ ࠙ݺ൤ ੓਺  ӝઓ੄ ѐߊ ѐ֛ী ࠺೧ ಁ۞׮੐ ੹ജ੉ ೙ਃ.   بੑ ୡӝূ যו ੿ب੄ ૓ా਷ хࣻ೧ঠೣ. • View੄ ࢚క ҙܻо ࠂ੟ೠ ҃਋ (== ؀ࠗ࠙੄ ࠂ੟ೠ জ)  ViewModelীࢲ੄ ୊ܻо ؊ ੗োझۣ׮.  ௾ ഥࢎীࢲ MVVMਸ ݆੉ٜ ଻ਊೞח ੉ਬ • Android Architecture Component റҟ ബҗ  LifeCycle - ViewModel - LiveData - Room ઑ೤਷ ৘ઁب ݆׮ • Cross Platform ҳഅী ખ ؊ ਬܻ  Data Binding, LiveData, Roomਸ ನӝೡ ҃਋,   Kotlinਸ Swift۽ ৤ӝח Ѫ݅ਵ۽ب View ੉৻੄ ࣗझ੄ 70% ੉࢚ਸ ੤ࢎਊ оמ

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MVVM - MVP ҕా੄ ੢੼ • ѐߊ ࣘبо ݻ ߓח ࡈۄ૓׮  (઱੄: ѐੋର ੓਺. ୡӝ 2~3઱р ѐߊ ࣘبח ݻ ߓח ו۰૕ ࣻ ੓਺) • ௏٘ ߸҃ী ؀ೠ ف۰਑੉ (Ѣ੄) হয૓׮. • ٸ۰઱Ҋ र਷ ӝദ੗о әѺೠ ࢎন ߸҃ਸ ਃ୒೧ب ਓਵݶࢲ ؀୊ೡ ࣻ ੓׮ • 1֙ ٍী ׮द ௏٘ܳ ࠊب ૊द য٣ܳ Ҋ୛ঠೞח૑ ঌইରܾ ࣻ ੓׮ • ׮ܲ ূ૑פযীѱ ௏٘ܳ ࠁৈ઻ب ଃ౹ܻ૑ ঋח׮

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਋৴ƀ ੿݈ જ਷ؘ? ਋ܻب ੉ઁ ҍ गಌ ѐߊ੗ غחѹ?

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Ӓۧѱ ࢤп೮ਵա.. Ӓ۽ࠗఠ ݻ ѐਘ റ..

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೐۽ં౟ ࢎ੉ૉо ੼੼ ழ૑ݶࢲ.. ௏٘о ӝ؀৬ח ׳ܻ ૑੷࠙೧૑Ҋ ੓׮. ରۄܻ ށۋਵݶ જওਸ Ѧ.. Ҋ޹݅ ט঻׮.

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Ӓېࢲ ળ࠺೧ࠌणפ׮.

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Chapter 4.   MVP / MVVM at Scale

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1. Fat Presenter • ੉ઁח Presenterо ցޖ ݆ਸ ੌਸ ೠ׮! • పझ౟ ா੉झܳ ٜ݅ӝо য۰ਕ઎׮ • ੹ࠁ׮ח Ӓېب ի૑݅.. ৈ੹൤ ௏٘о ૑੷࠙ೞ׮. • ݃஖ Activity Manager э਷ ѱ ೞա טযաӝ݅ ೠ ו՝? • ઱ػ ਗੋ઺ ೞաח Presenterܳ View৬ ݺഛ൤ ܻ࠙ೞ૑ ঋ਷ Ѫ

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೧Ѿ଼ • ௼ѱ Ҋ޹ೞ૑ ঋইب View৬ Presenterܳ ੜޅ ҳഅೞӝ য۵ب۾ ೞח ੢஖ о ೙ਃ • Viewח ੉߮౟ܳ ߊࢤदఃҊ, UIܳ Ӓ۰઱ח ৉ೡ݅ਸ ׸׼, ࠺ૉפझ ۽૒੉ ա ݽ؛੉ ՙযٜ ࣻ ੓ח ৈ૑ܳ ରױ • Presenterо View੄ ࣁࠗ ࢎ೦ਸ ঌ ࣻ হب۾, Pח Viewܳ ୶࢚ച दఅ ഋక ۽݅ ଵઑೞب۾ ݅ٝ

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• View Interfaceܳ ాೠ ܻ࠙ • Mock Objectܳ ాೠ Unit Testо ݒ਋ एਕ૗ • Presenterח ࠺ૉפझ ۽૒ ୊ܻ݅ ׸׼ • Viewח Ӓܻӝ݅ ׸׼ • ؘ੉ఠ੄ ܻ࠙ب ೣԋ ੉ܞ૗: Viewח Modelী ؀೧ ঌ ೙ਃب, ঌ ࣻب হѱ ؽ • ೙ਃೠ ҃਋, Presenterө૑ Interfaceച दఇ MVP: Contractor Pattern

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• ژ ৉द Martin Fowlerо ੹౵ೠ ѐ֛ • ଵઑ: https://martinfowler.com/eaaDev/PassiveScreen.html • Fluxীࢲח Dumb Client, Clean Architectureীࢶ Humble ObjectۄҊ ܴࠗ • Viewח (೒ۖಬ ੄ઓ੸ੋ) Ӓܻӝ ੉৻ীח ইޖѪب ঌ ࣻ হب۾ ೣ • ۽Ӓੋ ചݶ੉ۄݶ, അ੤ ࢲߡ ੽ࣘ ઺ੋ૑ ৈࠗ, ۽Ӓੋ ࢿҕ ৈࠗ ١ઑରب View о ݽܰب۾.. -> isLoadingী true ੉߮౟о য়ݶ ಴द, ী۞ ৔৉ী ࡸ۰઴ ޙ ੗о য়ݶ ಴दೡ ࡺ 2. MVVM Best Practice: Passive View

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• ޥо ੉࢚ೠؘ? • Lighter View, Fatter ViewModel   -> Ӓ۞ݶ ViewModel੉ ؊ Ѣ؀೧૑ח ؘ ҡଳ਷о?? • ੄بػ Ѿҗ - MVVM਷ ؊ ա਷ ҳઑ۽ оӝ ਤೠ ઺ਃೠ оҮ  যۄ?

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– Nataliya Patsovska “MVVM is not an architecture.”

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3. ࠺ૉפझ ۽૒੄ ࠺؀ച • Presenterա ViewModel੄ بݫੋ ۽૒੉, х׼ೡ ࣻ হח ௼ӝо غח ࢚ട ੉ ৡ׮. • о੢ જ਷ ೧Ѿ଼਷ Single Responsibility Principle੄ ੸ਊ • ݽߧ ׹উ਷ ੉޷ ੓਺: ߄۽ Clean Architecture! • Presenterীࢲ بݫੋ ۽૒ਸ ܻ࠙ оמ • Data ҅க੄ ࣁ࠙ചܳ ా೧ ؊਌ ୶࢚ചػ ഋక੄ ҳઑ оמ

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https://qiita.com/koutalou/items/07a4f9cf51a2d13e4cdc

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[৘ઁ ௏٘]

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• Clean Architecutre੄ ੢੼: Single Responsibility Principle੄ ୽पೠ ׳ࢿ • Presenter / Domain / Data ҅க੄ ܻ࠙۽ ੋ೧ ੹୓ ۽૒੄ ൒ܴ੉ ੌݾਃো ೧૗ -> оةࢿ ә࢚थ • ౠ੿ ௿ېझо ࠺؀೧૑ח Ѫਸ ߑ૑ • п layerр ҳ࠙੉ ݺഛೞ޲۽, п ৔ೱ ߧਤب ݺഛ • ױ, ௿ېझ ۝੉ әѺ൤ ૐо -> ೠ ߣী ҳഅೞ۰ ೞݶ ѐߊࣘب੄ ੷ೞ৬ ߡӒ ন࢑ਸ ঠӝೡ ࣻب ੓਺ ଵ औભ?

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• 6ѐ੄ ௿ېझ, 2ѐ੄ ੋఠಕ੉झ.. (3ѐ ࢤۚ) • Incremental Improvement • Clean Architectureী ੊ࣼೞ૑ ঋѢա ࠂ੟ೠ दझమ੄ ࢸ҅ ҃೷੉ হח ҃ ਋, ݽٚ Ѧ ٮۄೡ ೙ਃח হ਺ • ੌױ ೐ܻઃప੉࣌ ۽૒੄ ೤ܻചࠗఠ द੘ • View - ViewModel/Presenter - Repository - Model(Entity) • بݫੋ / ؘ੉ఠ ۽૒਷ ೙ਃ੄ ੄೧ ੼૓੸ਵ۽ ೞח Ѫ੉ ೤ܻ੸

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Google Guide to App Architecture

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Ӓېب.. જӟ ೠؘ.. • ௿ېझо ցޖ ݆׮! • ੹୓੸ੋ ҳઑܳ ы୶ח ؘী ੸૑ ঋ਷ दр੉ ٜযр׮ • Ӓ۞ա જ਷ ߑߨ੉..! • ੉ ݽٚ Ѧ ੗زਵ۽ ٜ݅য ઱ח ೒۞Ӓੋ੉ ੓׮!  https://github.com/kiuchikeisuke/Android-Studio-CleanArchitecture- template-forKotlin • RxJava, Dagger, Retroﬁt, AAC, Presenter/ViewModel ௏٘ө૑ ކٶ ݅ ٜয ષ • Swagger ૑ਗਵ۽ REST API call ੋఠಕ੉झب ੗زਵ۽ ٜ݅য ષ

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3. ݻ о૑ դઁٜ.. • ҳઑ੄ ୍೟੸ ޙઁ: Presenter੄ ࠺ૉפझ ۽૒җ, Use Case੄ ࠺ૉפझ ۽ ૒਷ ؀୓ ޤо ౣܽо? • بݫੋ ۽૒੉ Use Caseী ٜযр׮ • ࢎস ࠗࢲ ࢎۈٜب ঌҊ ੓যঠ ೞח ۽૒੉ۄݶ, بݫੋ ۽૒

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https://qiita.com/koutalou/items/07a4f9cf51a2d13e4cdc ࠂण

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RecyclerView in MVP • Presenter۽ ReclyerView - Adapterܳ যڌѱ ؀೧ঠೞחоח ݒ਋ ө׮۽ ਍ ޙઁ.. ੿׹਷ হणפ׮ 1. Activity/Fragmentо (Presenter੄ ݺ۸ਸ ߉ই) Adapterܳ ઁয - ױࣽ ೠ ಁఢ੄ ܻझ౟ীח ബҗ੸. Groupie э਷ ۄ੉࠳۞ܻܳ ࢎਊೞݶ ؊਌ ബҗ੸ 2. Adapter৬ ݒೝغח Presenterܳ ҳഅ 3. ѐ߹ itemҗ пп 1:1 ݒೝغח ੘਷ Presenterܳ ҳഅ

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RecyclerView in MVVM • Presenterী ࠺೧ࢶ ױࣽೠ ޙઁ. Data bindingਵ۽ Ӓ؀۽ ViewModel োѾ оמ • ࠂ੟ೠ ҃਋о ইפۄݶ Adapterী ViewModel োѾ • ࠂ੟ೞ׮ݶ п Itemҗ ݒೝغח ੘਷ ViewModelਸ ҳഅ • ੉ ҃਋੄ ViewModel਷ Viewܳ ਤ೧ оҕػ Model੉ӝ ٸޙী যڃ ੄޷ী ࢲ ૓੿ೠ ViewModel.. • ઱੄ࢎ೦: AACܳ ੉ਊ೧ small ViewModelਸ ࢤࢿೡ ҃਋, providerী ౵ۄ ޷ఠܳ ߹ب ૑੿೧ঠ ೣ. ରۄܻ ࢚ਤ ViewModel੉ ࢤࢿೞח ѱ ؊ જਸ ࣻ ب ੓਺

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୭Ӕ ҃೷ • ઑѤ: 6ѐ੄ ݽ߄ੌ ࢲ࠺झ(ب೤ 12ѐ੄ জ)о 100% ৻઱ ѐߊ۽ ҳഅػ জਵ ۽ ࢲ࠺झ غҊ ੓ח ࢚ട • җઁ: 3ѐ ࢲ࠺झ(6ѐ জ)ٜਸ 7ѐਘ ղ۽ ܻ׏঴ • য۰਍ ੼: ࠺ૉפझ ҙ੼ীࢶ জ ҳઑ ѐࢶ਷ ௾ о஖о হ਺. ঱ઁա Ӓۧ٠ ޙઁח ࢜۽਍ ӝמٜਸ ঴݃ա ࡅܲ ࣘب۽ ֍וջ.. • নզ੄ Ѩ: ߬౟թ ѐߊ ઑ૒ - ࣚ਷ ࡅؘܲ.. ଵ ࡅؘܲ.. • নզ੄ Ѩ 2: ঠӔ Ә૑ -> Ҋب۽ ബਯ੸ੋ ੘স ೙ਃ

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әೠ ੌ әೞ૑ ঋ਷ ੌ ઺ਃೠ ੌ ׼ো൤.. न ӝמ ҳഅ ߡӒ ࣻ੿ + জ উ੿ച Java -> Kotlin ߸ജ ViewModel or Presenter ੹ജ য়ېػ ۄ੉࠳۞ܻ тইఋӝ ઺ਃೞ ૑ ঋ਷ ੌ пઙ ഥ੄ ଵࢳ ੉࢚ೠ ߸ࣻݺ, ݫࣗ٘ݺ ߸҃ ٜৈॳӝ ߸҃ ӝఋ झఋੌ ࣻ੿

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Ѿҗ • 1ߣ૩ ࢲ࠺झ: ߬੉࠺ दఠ জ • ੹ݶ੸ੋ ҳઑ ѐࢶ਷ ӭՔೞѱ ನӝ. ब૑য iOSח ӝઓ ҳઑܳ ৮੹൤ ਬ૑ೠ ଻۽ नӝ מ݅ ୶о೮਺. Rx ࢎਊب ನӝ. ؀न API Callback ୊ܻܳ ӭՔೞѱ ೡ ࣻ ੓ח ҕా ௿ ېझ ҳഅ೧ࢲ উ੿ࢿ/ࢤ࢑ࢿਸ ੤Ҋ • উ٘۽੉٘ח о੢ ઺ਃೠ ࣁ ѐ੄ Fragment݅ MVP۽ ࣻ੿. աݠ૑ח नӏ ചݶ݅ MVP۽ ҳഅ • ݽٚ ࣗझܳ Kotlinਵ۽ ੗ز߸ജਸ ੉ਊ೧ࢲ ߸ജೞغ, ੌࠗ ޙઁ ࣗ૑੓ח ௏٘(Non- null ୊ܻ)ܳ ઁ৻ೞҌ ۨѢद ௏٘ܳ ޖܻೞѱ Kotlinझ۞਍ ௏٘۽ Ҋ஖۰Ҋ ೞ૑ח ঋ਺ • AAC੄ Life Cycle ӝמਸ ੉ਊೞӝ ਤ೧ ViewModelਸ ࢚ࣘ ߉ই Presenter ҳഅ • 7 to 9 principle ࣁ਑. য়റ 7~9दী݅ restructuring / refactoring ੘স

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Ѿҗ • 1ߣ૩ ࢲ࠺झ: ߬੉࠺ दఠ জ (҅ࣘ) • ӝઓ੄ Challengingೠ ੌ੿ਸ, ޖ۰ 3઱ੌ ױ୷೧ࢲ োղ ܾܻૉ ࢿҕ • ѱ׮о ୹दܳ ੉ౣ খفҊ CPO۽ࠗఠ ц੘झۣѱ ޷оੑ ࢎਊ੗ܳ ਤೠ ѱझ ౟ ݽ٘ܳ ٜ݅য ׳ۄח ਃ୒ਸ ߉਺  -> ਗې ഥਗ ੹ਊਵ۽݅ ٣੗ੋ غ঻؍ জ੉ۄ ࢚׼ೠ ؀ҕࢎ৓ਵա.. 1ੌ݅ী ؀ ਽ ৮ܐ (ҳഅ 3दр, ٣ߡӦ/৘৻ࢎ೦ ୊ܻ 5दр)

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Ѿҗ • 2ߣ૩ ࢲ࠺झ: ׏झ জ • উ٘۽੉٘, iOS ݽف MVVM ੸ਊ • ೒ۖಬ ઺݀ࢿਸ ਤ೧ RxJava/RxSwift - Realm ࢎਊ, Data Binding਷ ࢎਊೞ ૑ ঋ਺ • ଵҊ: 4 Reasons I’m not Using Android Data Binding  https://medium.com/@Miqubel/4-reasons-im-not-using-android-data- binding-e62127c2650c (੷ח ݽف ز੄ೞ૑ח ঋणפ׮݅..) • 3ߣ૩ ࢲ࠺झ: ҳੋ/ҳ૒ জ • ੉ઃ ҕ੢ ݽ٘: 2ߣ૩ীࢲ ݅ٚ ҳઑܳ Ӓ؀۽ ੤ഝਊ೧ࢲ ନযղҊ ੓਺

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хࢎ೤פ׮!

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• ੹ਗ झணۄ ӝ߈ ಽ झఖ ূ૑פয • ઑѤ • ҃۱, ೟۱ ޖҙ • ߔূ٘/ݽ߄ੌ/೐ۿ౟ূ٘ ١ ࠙ঠ ޖҙ • ୡ١೟Ү 3೟֙ ࣻળ੄ ੌࠄয • ࠙ঠ, ѐߊ঱যח оܻ૑ ঋ਺:   о੢ ੗न ੓ח ঱য੄ ௏٬ प۱݅ ࠆ  (য়೑࠘ ௏٬ పझ౟ ੓਺) • ઁѱ ੉ݫੌ۽ CV ઱दݶ ࢚׸೧٘݀פ׮. Nextbeatח ҳੋ઺! • ठۄ੉٘ ݂௼:  https://speakerdeck.com/saryong/ mvvm-iyagi-droidknight-2018 • ࠶۽Ӓ ݂௼ (5/5):  https://medium.com/@justfaceit • Email:  justfaceit@gmail.com