Navigationを見据えたリファクタリング -マルチモジュール化を添えて-

Bonfire Android #5
2019/8/19

Transcript

1. OBWJHBUJPOΛݟਾ͑ͨϦϑΝΫλϦϯά
 dϚϧνϞδϡʔϧԽΛఴ͑ͯd #POpSF
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2. ໦಺
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   w झຯͰ࡞ͬͨϞϊɿʮΒ͘ͰΜ "QQ ʯɺ
 ʮ$MFBO"SDIJUFDUVSF5FNQMBUF'PS,PUMJO 044 ʯ
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   w 4/4

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4. એ఻ͦͷ̎
5. ࠓճͷωλ
   ϑΝΠφϯεΞϓϦΛ͕ͬͭΓ
 ϦϑΝΫλϦϯά͠Α͏ͱͨ࣌͠ͷग़དྷࣄ ґଘؔ܎ ࢖༻ؔ܎
6. "QQ ͜Μͳײ͡ͳ΍ͭΛɾɾɾ 1SFTFOUFS %BUB
7. ͜Μͳײ͡ʹ͍ͨ͠ "QQ 1SFTFOUFS %BUB %PNBJO 'SBHNFOU 'SBHNFOU 'SBHNFOU OBWJ
   HBUJPO ɾ
   ɾ
   ɾ
8. 1SFTFOUFS OBWJHBUJPOಋೖ͢Δ্Ͱݟ͖͑ͯͨ໰୊఺ w BQQ഑Լͷ'SBHNFOU͕OBWJHBUJPO͔Βݟ͑ͳ͍
   w Ϋϥεؒͷ૬ޓґଘ͕ଟ͘શΫϥε͕͓Ҿӽ͢͠Δ੎͍ͩͬͨ
   w ը໘ભҠܥͷॲཧ͕৭ΜͳॴʹࢄΒ͹͍͙ͬͯͯ͢ʹ͸ಋೖͰ͖ͳ͔ͬͨ "QQ 'SBHNFOU 'SBHNFOU ɾ
   ɾ
   ɾ 'SBHNFOU OBWJ
   HBUJPO 'SBHNFOU 'SBHNFOU 'SBHNFOU 'SBHNFOU TPNF$MBTT TPNF$MBTT TPNF$MBTT TPNF$MBTT
9. 
   ં஭Ҋʜ
10. কདྷOBWJHBUJPOΛಋೖ͠΍͍͢ Α͏ʹϦϑΝΫλϦϯά͠Α͏
11. ΍ͬͨ͜ͱ
    ґଘͷ޲͖Λٯసͤͭͭ͞
    OBWJHBUJPOʹؔ࿈͢ΔॲཧΛू໿ͨ͠
12. ͜ΕΛɾɾɾ w 3FGBDUPSFE'SBHNFOU͔Β͸'SBHNFOU ͕ݟ͑ͳ͍ 1SFTFOUFS "QQ 3FGBDUPSFE
 'SBHNFOU 'SBHNFOU ɾ
    ɾ
    ɾ 'SBHNFOU
13. ͜͏ͨ͠ w /BWJ*OUFSGBDFΛ௨ͯؒ͠઀తʹ'SBHNFOU ΁ΞΫηεͰ͖ΔΑ͏ʹͨ͠ 1SFTFOUFS "QQ 3FGBDUPSFE
 'SBHNFOU 'SBHNFOU ɾ
    ɾ
    ɾ 'SBHNFOU /BWJ
 *OUFSGBDF /BWJ
 *OUFSGBDF
 *NQM
14. 1SFTFOUFS "QQ ࣮૷ interface NaviInterface { fun getFragment2(): Fragment fun getFragment3(data: SomeData): Fragment } class RefactoredFragment { override fun onOptionsItemSelected(item: MenuItem): Boolean { when (item.itemId) { android.R.id.home -> changeFragment(naviInterface.getFragment2()) R.id.action_sub -> changeFragment(naviInterface.getFragment3(data)) } return super.onOptionsItemSelected(item) } } class NaviInterfaceImpl : NaviInterface { override fun getFragment2(): Fragment = Fragment2.newInstance() override fun getFragment3(data: SomeData): Fragment = Fragment3.newInstance(data.code, data.name) } OBWJHBUJPOΛ࢖͏ͱ͖͸͜ΕΒΛ ஔ͖׵͑Ε͹0, ͩͱࢥ͏ OBWJHBUJPOʹ͢Δ࣌͸
 ͜ΕΒΛஔ͖׵͑Ε͹0,
15. OBWJHBUJPO༻ͷॲཧ͕ू໿ग़དྷͯ
 1SFTFOUFS͕BQQʹґଘ͠ͳ͘ͳͬͨ
16. ऄ଍ͦͷ̍ w ͜ͷख๏ͬͯଞͷϨΨγʔͳ"QJ΍6UJMݺͼग़͠ʹ΋࢖͑ΔΜ͡Όʁ
 ˠ:&4 1SFTFOUFS "QQ 3FGBDUPSFE
 'SBHNFOU -FHBDZ6UJM ɾ
    ɾ
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 *OUFSGBDF -FHBDZ
 *OUFSGBDF
 *NQM -FHBDZ
 *OUFSGBDF -FHBDZ
 *OUFSGBDF -FHBDZ
 *OUFSGBDF
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 *OUFSGBDF
 *NQM
17. ऄ଍ͦͷ w ͦ΋ͦ΋OBWJHBUJPOΛBQQ಺ʹ࣮૷͢Ε͹Α͔ͬͨͷͰ͸ʁ
 ˠ:&4 1SFTFOUFS "QQ 3FGBDUPSFE
 'SBHNFOU 'SBHNFOU ɾ
    ɾ
    ɾ 'SBHNFOU OBWJ
 HBUJPO
18. ·ͱΊ w ґଘͷ޲͖Λٯసͤ͞Ε͹ɺ1SFTFOUFSϞδϡʔϧ͔ΒBQQϞδϡʔϧ΁ ͷؒ઀తͳࢀর͕Մೳ OBWJHBUJPOҎ֎ʹ΋৭ΜͳγʔϯͰར༻Մೳ
    w ͦ΋ͦ΋OBWJHBUJPOͷ࣮૷ΛBQQϞδϡʔϧͰߦ͑͹ґଘੑΛ
 ؾʹ͠ͳͯ͘ྑ͍
19. ͓ΘΓ