KotlinとReduxをAndroidアプリに導入したら

Transcript

1. ,PUMJOͱ3FEVYΛ
   "OESPJEΞϓϦʹಋೖͨ͠Β 
   3FUUZ
   5FDI
   /JHIU
   
   !
   3FUUZΦϑΟε

2. "CPVU
   NF • ෱Ҫರࢠ / Fukui Atsuko • @muumuumuumuu • Retty,

   Inc. • AndroidΤϯδχΞ • ͦͷલ͸૊ΈࠐΈܥAndroidͷ͓࢓ࣄ

3. ࠃ಺/P
   ໊࣮άϧϝαʔϏε3FUUZͷӡӦ
   ೥ઃཱ
   XFCͱΞϓϦͰαʔϏεల։
   γϯάϧυϝΠϯ
   εϚϗϑΝʔετ
   ݄ؒར༻ऀ਺ສ

4. ͦΜͳ3FUUZͷ
   "OESPJEνʔϜ͕࠷ۙࢼ͍ͯ͠Δ
   
   ,PUMJO
   ͱ
   3FEVY
   ͷ૊Έ߹Θͤ
   ʹ͍͓ͭͯ࿩͠͠·͢ɻ

5. "HFOEB • લఏ஌ࣝ: Kotlin / Redux ʹ͍ͭͯ • ಘΒΕͨ஌ݟ •

   ·ͩ೰ΜͰ͍Δ෦෼

6. ,PUMJO

7. ,PUMJO • 2011೥ʹJetBrain͔ࣾΒൃද͞Εͨϓϩάϥ ϛϯάݴޠ • Better Java ͳݴޠ • JavaͱڞଘՄೳ

   • ؔ਺ܕϓϩάϥϛϯάͷελΠϧΛαϙʔτ • ͔Θ͍͍

8. 3FEVY

9. 3FEVY • React js ͔Βग़͖ͯͨઃܭࢥ૝ • Three Principles • Single

   source of truth • State is read-only • Changes are made with pure functions

10. 3FEVY

11. ಋೖʹ͋ͨͬͯ

12. 3FEVY
    -JCSBSZ • ࣾ಺Ͱ࡞ͬͯެ։͠·ͨ͠ • https://github.com/RettyEng/redux-kt • ReSwiftΛϦεϖΫτ • طଘͷLibrary΋ݕ౼͚ͨ͠ͲσϑΝΫτ͕ͳ ͍ঢ়ଶ

13. %FNP

14. 3FEVY

15. ͠͹Β͘ࢼͯ͠ಘΒΕͨ஌ݟ

16. ͕͜͜خ͍͠ • Activity/Fragment/ViewΛލ͍Ͱ৘ใΛڞ༗ Ͱ͖Δ • StateͷมߋΛ͢Δ෦෼͕Viewͷߋ৽ͷ੹຿ ͔Β׬શʹ෼཭Ͱ͖Δ • View͕Ͳ͏มΘΔ͔͸ؔ৺ͷର৅֎ •

    APIίʔϧΛ଴ͨͣը໘දࣔͰ͖Δ

17. ޲͍͍ͯΔαʔϏε • ෳ਺ͷը໘Ͱ৘ใΛڞ༗͍ͯ͠Δ • ը໘ભҠͷύλʔϯ͕ෳ਺͋Δ

18. ޲͍͍ͯͳ͍αʔϏε • ΞϓϦ֎͔ΒϦΞϧλΠϜʹ৘ใ͕มΘΓ͏ Δ • ෆشൃ৘ใΛͨ͘͞Μѻ͏ඞཁ͕͋Δ • State͕࣋ͭ΂͖৘ใͷαΠζ͕େ͖͍

19. ,PUMJOͱ૬ੑͷྑ͞  • Stateͷ࣋ͭ஋͕nullڐ༰͔Ͳ͏͔ίʔυͰࣔ ͤΔ • Viewଆͷίʔυ͕ॻ͖΍͍͢

20. ,PUMJOͱ૬ੑͷྑ͞  • Test͕ॻ͖΍͍͢ • Reducer͕७ਮؔ਺ͳͷͰmockͳ͠Ͱςε τ͕ॻ͚Δ

21. ,PUMJOͱ૬ੑͷྑ͞  • Stateͷૢ࡞͕ॻ͖΍͍͢ • dataΫϥεͷcopy()ϝιουͰมߋ͢ΔՕॴ Λ໌ࣔతʹࢦఆͰ͖Δ

22. ·ͩ೰ΜͰ͍Δͱ͜Ζ

23. 4UBUFͷ࣋ͪํ • Ͳͷ৘ใΛͲ͏͍͏෩ʹStateͱͯ͠อ࣋͢Δ ͔ͱͯ΋೰Ή • ͓ͦΒ͘ਖ਼ղ͸ͳ͍ • αʔϏε΍ΞϓϦʹΑͬͯมΘͬͯ͘Δ • Ͱ΋։ൃऀؒͰ͋Δఔ౓ҙࣝ߹Θ͕ͤඞཁ

24. 4UBUFͷੜଘظؒ • Applicationͱಉ͡ʢΦϯϝϞϦͳ৘ใʣ • όοΫάϥϯυʹճͬͨ࣌ʹΞϓϦϓϩηε ͕kill͞ΕΔͱҰॹʹ৘ใ͕ࣦΘΕΔ • ͍ࣦͭΘΕͯ΋͍͍৘ใ͔͠ࡌͤͳ͍ • SharedPreference͔αʔόʹୀආ͢Δ

25. ϝϞϦੜଘظؒ໰୊ • Application͕ੜ͖͍ͯΔݶΓղ์͞Εͳ͍ ϝϞϦͨͪ • Retty͸ॏ͍ͨσʔλΛอ࣋͢Δέʔε͕ͳ͍ ͷͰࠓͷॴେৎ෉

26. ·ͱΊ

27. ·ͱΊ • Kotlin / Redux ͷ૊Έ߹ΘͤΛಋೖͯ֓͠Ͷ ѱ͍ͱ͜Ζ΋ݟ౰ͨΒͣ޾ͤͰ͢ • ͨͩ͠αʔϏεͷੑ࣭ͱѻ͏σʔλʹΑΓ· ͢

    • Ұ౓ࢼͯ͠ΈΔͷ͸ΞϦʂ • ͥͻLibrary࢖ͬͯΈ͍ͯͩ͘͞ʂ٩( 'ω' )و

28. ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ

29. ͔͜͜Βઌ͸͕࣌ؒ͋Ε͹

30. 'MVYʹ͠Α͏͔೰Ή໰୊ • Reduxͱಉ͘͡σʔλͷྲྀΕ͕Ұํ௨ߦ • Redux͸Flux͔Β೿ੜͨ͠ߟ͑ํ • ͨͩ͠StoreΛෳ਺࣋ͪ͏Δ

31. 'MVYʹ͠Α͏͔೰Ή໰୊ • ActivityΛލ͕ͳ͍͚Ͳɺෳ਺ͷView Component Ͱ৘ใΛڞ༗͍ͨ͠ • ΞϓϦશମͷStoreʹͷͤΔ৘ใͱͯ͠͸ෆద੾ͳ ؾ͕͢Δ • ୯Ұػೳ͚ͩͰ͔͠࢖Θͳ͍Store͕ཉ͘͠ͳΔ

    • ੜଘظؒ΋Activityʹ߹ΘͤΒΕΔͷͰίϯτ ϩʔϧ͠΍͍͢