Android Architecture Componentsを使って、改善・効率化するAndroidアプリ開発

@builderscon 2019

Transcript

1. ©2019 Wantedly, Inc. "OESPJE
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2. ©2019 Wantedly, Inc. Ryo Sakaguchi • Wantedly, Inc • Android/Kotlin… • Sake/Beer/Guitar… • Twitter/GitHub: @wakwak3125
3. ϖʔδλΠτϧ ϖʔδαϒλΠτϧ ©2019 Wantedly, Inc. "OESPJEΛϝΠϯͰ΍ͬͯΔਓ " ͍Βͬ͠Ό͍·͢ʜʁ
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    ·ͱΊ ࿩͢͜ͱ AAC=Android Architecture Components
5. ©2019 Wantedly, Inc.  ""$ͷશମ૾
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6. ©2019 Wantedly, Inc.  ""$ͷશମ૾
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7. ©2019 Wantedly, Inc.  ""$ͷશମ૾
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8. ©2019 Wantedly, Inc.  ""$ͷશମ૾
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10. ©2019 Wantedly, Inc.  ""$ͱ͸ʁ
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11. ©2019 Wantedly, Inc. ""$ͱ͸ʁ ""$ͷશମ૾
12. ©2019 Wantedly, Inc. Android architecture components 
 are a collection of libraries that help you design robust, testable, and maintainable apps. Page Title Page Subtitle https://developer.android.com/topic/libraries/architecture
13. ©2019 Wantedly, Inc. Android architecture components 
 are a collection of libraries that help you design robust, testable, and maintainable apps. Page Title Page Subtitle https://developer.android.com/topic/libraries/architecture
14. ©2019 Wantedly, Inc. Android architecture components 
 are a collection of libraries that help you design robust, testable, and maintainable apps. Page Title Page Subtitle https://developer.android.com/topic/libraries/architecture
15. ©2019 Wantedly, Inc. Android architecture components 
 are a collection of libraries that help you design robust, testable, and maintainable apps. Page Title Page Subtitle https://developer.android.com/topic/libraries/architecture
16. ©2019 Wantedly, Inc. Android architecture components 
 are a collection of libraries that help you design robust, testable, and maintainable apps. Page Title Page Subtitle https://developer.android.com/topic/libraries/architecture
17. ©2019 Wantedly, Inc. ϥΠϒϥϦͷ঺հ ൺֱతೃછΈਂ͍͋ͷࢠ΋""$ͷҰһͰ͢
18. ©2019 Wantedly, Inc.  %BUB
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19. ©2019 Wantedly, Inc. https://developer.android.com/ jetpack/docs/guide Page Title Page Subtitle
20. ©2019 Wantedly, Inc.  %BUB
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21. ©2019 Wantedly, Inc. %BUB
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22. ©2019 Wantedly, Inc. YNMͰϨΠΞ΢τΛఆٛ͢Δ جຊతͳ"OESPJEͷը໘ͷ࡞Γํ %BUB
    #JOEJOHະ࢖༻ <androidx.constraintlayout.widget.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent" tools:context=“.MainActivity"> <TextView android:id="@+id/text_view" android:layout_width="wrap_content" android:layout_height="wrap_content" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" /> </androidx.constraintlayout.widget.ConstraintLayout> text_view
23. ©2019 Wantedly, Inc. +BWB,PUMJO͔Β࢖͏ جຊతͳ"OESPJEͷը໘ͷ࡞Γํ %BUB
    #JOEJOHະ࢖༻ val textView = findViewById<TextView>(R.id.text_view) textView.text = "Hello, World!" text_view
24. ©2019 Wantedly, Inc. YNMͰϨΠΞ΢τΛఆٛ͢Δ جຊతͳ"OESPJEͷը໘ͷ࡞Γํ %BUB
    #JOEJOH <androidx.constraintlayout.widget.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <TextView android:id="@+id/text_view" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@{text}" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" /> </androidx.constraintlayout.widget.ConstraintLayout> android:text="@{text}"
25. ©2019 Wantedly, Inc. !\^ͱ͍͏ܗͰηοτ͢Δ جຊతͳ"OESPJEͷը໘ͷ࡞Γํ %BUB
    #JOEJOH <androidx.constraintlayout.widget.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <TextView android:id="@+id/text_view" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@{text}" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" /> </androidx.constraintlayout.widget.ConstraintLayout> android:text="@{text}"
26. ©2019 Wantedly, Inc. YNM͔Β#JOEJOHΫϥε͕ੜ੒͞ΕΔ جຊతͳ"OESPJEͷը໘ͷ࡞Γํ %BUB
    #JOEJOH <androidx.constraintlayout.widget.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <TextView android:id="@+id/text_view" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@{text}" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" /> </androidx.constraintlayout.widget.ConstraintLayout> android:text="@{text}"
27. ©2019 Wantedly, Inc. Lifecycle Lifecycle-Aware Components
28. ©2019 Wantedly, Inc. ԿΒ͔ͷඇಉظͳॲཧΛ࣮૷͢Δͱ͖͸ ݱࡏͷը໘͕ʮੜ͖͍ͯΔʯͷ͔ʮࢮΜͰ͍Δʯͷ͔ʹ஫ҙΛ෷͏ඞཁ͕͋Δ w ը໘͕ੜ͖͍ͯΔ࣌ʹඇಉظॲཧͷ݁Ռ͕ฦͬͯ ͖ͨʂը໘ʹ൓ө͠Α͏ʂ
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29. ©2019 Wantedly, Inc. !0O-JGFDZDMF&WFOU ʜ -JGFDZDMF"XBSF
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30. ©2019 Wantedly, Inc. -JGFDZDMF&WFOU0/@45"35 -JGFDZDMF"XBSF
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31. ©2019 Wantedly, Inc. -JGFDZDMF&WFOU0/@4501 -JGFDZDMF"XBSF
    $PNQPOFOUT @OnLifecycleEvent(Lifecycle.Event.ON_START) fun start() { // startObserveSomething { result -> // callback(result) // } } @OnLifecycleEvent(Lifecycle.Event.ON_STOP) fun stop() { // ઀ଓΛղআ͢Δ } ଞͷϑϨʔϜϫʔΫʹ౰ͯ͸ΊΔͱ͜Μͳײ͡ w 3FBDU
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    w ը໘ͷϥΠϑαΠΫϧʹ४ͨ͡ಠࣗͷΦϒδΣΫ τΛ࡞Δ͜ͱ͕Ͱ͖Δɻ ͪΐͬͱ·ͱΊΔͱ -JGFDZDMF
33. ©2019 Wantedly, Inc. LiveData Observable data holder
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36. ©2019 Wantedly, Inc. -JGFDZDMFΛߟྀͯ͘͠ΕΔɺ0CTFSWBCMF ϑϨʔϜϫʔΫͷ-JGFDZDMFʹ͏·͘৐͔ͬͬͯ͘ΕΔ w -JGFDZDMFతʹɺը໘ͷߋ৽Λͯ͠΋ྑ͍ঢ়ଶͷ ࣌ʹ͸஋͕ྲྀΕͯ͘Δɻͦ͏͡Όͳ͍ͱ͖͸ྲྀΕ ͯ͜ͳ͍
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37. ©2019 Wantedly, Inc. -JGFDZDMFΛߟྀͯ͘͠ΕΔɺ0CTFSWBCMF ϑϨʔϜϫʔΫͷ-JGFDZDMFʹ͏·͘৐͔ͬͬͯ͘ΕΔ w -JGFDZDMFతʹɺը໘ͷߋ৽Λͯ͠΋ྑ͍ঢ়ଶͷ ࣌ʹ͸஋͕ྲྀΕͯ͘Δɻͦ͏͡Όͳ͍ͱ͖͸ྲྀΕ ͯ͜ͳ͍
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38. ©2019 Wantedly, Inc. -JGFDZDMF0XOFS -JGFDZDMFͷঢ়ଶΛ஌͍ͬͯΔଘࡏ public interface LifecycleOwner { /** * Returns the Lifecycle of the provider. * * @return The lifecycle of the provider. */ @NonNull Lifecycle getLifecycle(); }
39. ©2019 Wantedly, Inc. 0CTFSWF͢Δ࣌ʹɺ-JGFDZDMF0XOFSΛऔΔ -JWF%BUB viewModel.comments.observe(lifecycleOwner, Observer { // ͜͜ʹίϝϯτͷϦετ͕ྲྀΕͯ͘Δɻ })
40. ©2019 Wantedly, Inc. -JGFDZDMFΛߟྀͯ͘͠ΕΔɺ0CTFSWBCMF ϑϨʔϜϫʔΫͷ-JGFDZDMFʹ͏·͘৐͔ͬͬͯ͘ΕΔ w -JGFDZDMFతʹɺը໘ͷߋ৽Λͯ͠΋ྑ͍ঢ়ଶͷ ࣌ʹ͸஋͕ྲྀΕͯ͘Δɻͦ͏͡Όͳ͍ͱ͖͸ྲྀΕ ͯ͜ͳ͍
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41. ©2019 Wantedly, Inc. ViewModel Store and manage UI-related data in a lifecycle conscious way
42. ©2019 Wantedly, Inc. 7JFX.PEFM ఆٛࣗମ͸ͱͯ΋ബ͍ public abstract class ViewModel { @SuppressWarnings("WeakerAccess") protected void onCleared() { } } ࣮ࡍʹ͸ߦఔͲ͸͋Δɻ͕ɺͦΕͰ΋ബ͍
43. ©2019 Wantedly, Inc. ը໘ճసΛ৐Γ੾Δ͜ͱ͕Ͱ͖Δ ը໘͕ճసͨ࣌͠ɺը໘͸࠶ੜ੒͞ΕΔ͕ɺ7JFX.PEFM͸มΘΒͳ͍ w ͭ·Γɺ7JFX.PEFM͸ը໘Λੜ੒ͨ࣌͠ʹ࡞Β ΕΔͦͷΠϯελϯεͱมΘΒͳ͍ͷͰɺը໘Λ ࠶ੜ੒ͨ࣌͠ʹ΋ɺಉ͡΋ͷΛ࢖͏͜ͱ͕Ͱ͖ Δɻ
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44. ©2019 Wantedly, Inc. 7JFX.PEFM4UPSF 7JFX.PEFM͕ը໘ճసΛ௒͑ͯอଘ͞Ε͍ͯΔ৔ॴ w ͜ͷ৔ॴʹɺ7JFX.PEFMͷΠϯελϯε͕อ࣋͞Ε͍ͯΔɻ
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46. ©2019 Wantedly, Inc. $PSPVUJOFT
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47. ©2019 Wantedly, Inc. Room Room Persistence Library
48. ©2019 Wantedly, Inc. 42-JUFͷΦϒδΣΫτϚούʔ ػೳϞϦϞϦͷ03.ͱ͍͏ΑΓ͸ɺ42-JUFͷந৅ԽϨΠϠ w $PSPVUJOFTαϙʔτ
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49. ©2019 Wantedly, Inc. WorkManager
50. ©2019 Wantedly, Inc. গ͠௕͍ॲཧ΍஗Ԇ͕Մೳͳ΋ͷΛ࣮ߦ͢Δͱ͖ Ϣʔβʹͱͬͯ͸ଈ࣌ੑ͕ͳͯ͘΋ྑ͍΋ͷ w ΞφϦςΟΫεΠϕϯτͷૹ৴ॲཧ
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52. ©2019 Wantedly, Inc. $POTUSBJOUT#VJMEFS 8PSL.BOBHFSͷδϣϒͷىಈʹඞཁͳ੍໿Λઃ͚Δ w TFU3FRVJSFE/FUXPSL5ZQF
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53. ©2019 Wantedly, Inc. Paging
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