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

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2. ©2019 Wantedly, Inc. Ryo Sakaguchi • Wantedly, Inc • Android/Kotlin…

   • Sake/Beer/Guitar… • Twitter/GitHub: @wakwak3125

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   ·ͱΊ ࿩͢͜ͱ AAC=Android Architecture Components

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   ·ͱΊ ࿩͢͜ͱ AAC=Android Architecture Components

6. ©2019 Wantedly, Inc.  ""$ͷશମ૾
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   ·ͱΊ ࿩͢͜ͱ AAC=Android Architecture Components

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   ·ͱΊ ࿩͢͜ͱ AAC=Android Architecture Components

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   ·ͱΊ ࿩͢͜ͱ AAC=Android Architecture Components

9. ©2019 Wantedly, Inc. ""$ͷશମ૾

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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

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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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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

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    #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}"

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    #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

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33. ©2019 Wantedly, Inc. LiveData Observable data holder

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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 { /**

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39. ©2019 Wantedly, Inc. 0CTFSWF͢Δ࣌ʹɺ-JGFDZDMF0XOFSΛऔΔ -JWF%BUB viewModel.comments.observe(lifecycleOwner, Observer { // ͜͜ʹίϝϯτͷϦετ͕ྲྀΕͯ͘Δɻ

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41. ©2019 Wantedly, Inc. ViewModel Store and manage UI-related data in

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42. ©2019 Wantedly, Inc. 7JFX.PEFM ఆٛࣗମ͸ͱͯ΋ബ͍ public abstract class ViewModel {

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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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47. ©2019 Wantedly, Inc. Room Room Persistence Library

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