AndroidXに潜む便利なヤツら

Transcript

1. AndroidXʹજΉศརͦ͏ͳϠπΒ
   @takuji31
   Mobile Act KYOTO #1
   

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2. ࣗݾ঺հ
   

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3. ࣗݾ঺հ
   • @takuji31 id:takuji31
   • Takuji Nishibayashi
   • Hatena Co., Ltd.
   • App Team
   • ίϛοΫDAYS
   • δϟϯϓϧʔΩʔʂ
   • ΧΫϤϜ
   

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4. ࣗݾ঺հ
   • Android
   • Kotlin
   • Flu-er
   •
   !
   h-ps:/
   /blog.takuji31.jp
   •
   "
   h-ps:/
   /nazuna.takuji31.jp
   •
   # $
   h-ps:/
   /photo.takuji31.jp
   

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5. AndroidX
   

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6. LiveData?
   ViewModel?
   AppCompat?
   Naviga5on
   

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7. ࢖ͬͯ·͢ΑͶ
   

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8. ศརͳ΍ͭ৭ʑ঺հ͠·͢
   

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9. α൛ͷ΋ͷ΋ؚ·ΕΔͷͰ
   ͝ར༻͸ܭըతʹ
   

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10. ଞʹ΋͍͍΋ͷ͋ͬͨΒ
    ڭ͍͑ͯͩ͘͞ʂ
    

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11. androidx.ac*vity
    androidx.fragment
    

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12. ComponentActivity.viewModels{}
    Fragment.viewModels{}
    Fragment.activityViewModels{}
    

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13. ViewModelΛऔಘͰ͖Δ
    Delegated property
    

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14. viewModels ͸Ҿ਺Ͱ
    ViewModelStoreOwnerΛ୳͢
    blockΛ౉ͤΔ
    

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15. valʹͰ͖Δ
    

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16. Goodbye!
    private lateinit var
    

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17. @ContentView
    

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18. ComponentAc*vity ͱ Fragmentʹ
    secondory constructor͕௥Ճ
    

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19. constructorͷҾ਺ʹLayoutͷIDΛ
    ౉ͤΔ
    

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20. Goodbye setContentView()
    

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21. DataBinding͸bind͢Ε͹Αͦ͞͏
    

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22. androidx.lifecycle
    

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23. ViewModelͱ͔LiveDataͱ͔ೖͬͯ
    ΔΞϨ
    

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24. ViewModel.viewModelScope
    

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25. ViewModelͷCorou,neScope
    

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26. Context͸
    Dispatchers.Main + Job
    

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27. onCleared() ͰΩϟϯηϧ
    

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28. Saved State
    

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29. ViewModel͸ը໘ճసΛੜ͖࢒Δ
    

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30. Ac#vity͕ϝϞϦʔ͔Β
    ഁغ͞ΕΔ࣌͸ࢮ͵
    

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31. SavedStateHandler
    Ͱঢ়ଶΛ෮ݩͰ͖Δ
    

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32. γϯϓϧͳ
    set/get/remove/contains
    

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33. getLiveData()
    

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34. see. h&ps:/
    /developer.android.com/
    topic/libraries/architecture/
    viewmodel-savedstate
    

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35. androidx.navigation
    

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36. Naviga&onͷΞϨ
    

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37. androidx.navigation.safeargs
    androidx.navigation.safeargs.kotlin
    

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38. Naviga&onͷxmlʹఆٛͨ͠ભҠઌ
    ͷargsΛࣗಈੜ੒
    

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39. Kotlinίʔυੜ੒Մೳ
    

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40. Goodbye createIntent()
    methods!
    

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41. Naviga&onͰը໘ભҠ͠ͳͯ͘΋࢖
    ͑Δ
    

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42. ·ͣ͸࢖ͬͯΈͯʂ
    

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43. Fragment.navGraphViewModels()
    

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44. ࢦఆͨ͠Naviga&onͷgraphͰੜ͖
    ࢒ΔFragment
    

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45. NavHostFragment಺ͷFragment಺
    Ͱ࢖͏ɺΈ͍ͨͳײ͡ͷ࣌ʹ࢖͑ͦ
    ͏
    

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46. ͜Εॻ͍ͯͯࠓ࣮૷ͯ͠Δը໘Ͱ࢖
    ͑ͦ͏ͱࢥͬͨͷͰ࢖͏༧ఆ
    

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47. h"ps:/
    /developer.android.com/
    jetpack/androidx
    

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