Support Library v23.2 overview

shibuya.apk #6で発表した内容です

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1. Support Library
   v23.2 overview
   @androhi 1
   

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2. About me
   4 Zaim Inc.
   4 GitHub / Twitter / Qiita
   4 @androhi
   4 DroidKaigi 2016 staff & speaker
   @androhi 2
   

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3. Agenda
   4 v23.2ͷτϐοΫ
   4 RecyclerViewͷࣗಈαΠζௐ੔ػೳ
   @androhi 3
   

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4. v23.2ͷτϐοΫ
   1. VectorDrawableͷαϙʔτ
   4 Ξχϝʔγϣϯ෇͖͸Ұ෦੍ݶ͋Γ
   2. AppCompatͷDayNightςʔϚ
   3. BottomSheetͷαϙʔτ
   4. ΧελϜλϒʹϘτϜόʔͷ௥Ճ
   5. AndroidTVͷLeanbackڧԽ
   @androhi 4
   

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5. VectorDrawable ͷαϙʔτ
   4 VectorDrawableରԠ·ͱΊ @konifar
   4 AppCompat v23.2 — Age of the vectors
   @androhi 5
   

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6. DayNight ςʔϚͷ௥Ճ
   <br/>...<br/>
   // ΞϓϦશମʹઃఆ
   AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
   // Activity΍Dialog୯ҐͰઃఆ
   AppCompatDelegate delegate = getDelegate();
   delegate.setLocalNightMode(AppCompatDelegate.MODE_NIGHT_NO);
   @androhi 6
   

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7. BottomSheet ͷαϙʔτ
   4 αϙʔτϥΠϒϥϦ @yuichi_araki
   4 BottomSheetBehaviorΛ࢖͏
   @napplecomputer
   @androhi 7
   

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8. ΧελϜλϒͷϘ
   τϜόʔ
   ※ chrome v49 Ҏ্
   @androhi 8
   

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9. ΧελϜλϒͷϘτϜόʔ
   // VectorDrawableͰ΋େৎ෉ʂ
   Bitmap icon1 = BitmapFactory.decodeResource(getResources(), R.drawable.ic_room_24dp);
   Bitmap icon2 = BitmapFactory.decodeResource(getResources(), R.drawable.ic_favorite_24dp);
   CustomTabsIntent customTabsIntent = new CustomTabsIntent.Builder()
   .setToolbarColor(getResources().getColor(R.color.colorPrimary))
   .setSecondaryToolbarColor(getResources().getColor(R.color.colorPrimary))
   // ௥ՃͰ͖Δͷ͸4ݸ·ͰɻͦΕҎ্͸IllegalStateException
   .addToolbarItem(1, icon1, "description1", pendingIntent)
   .addToolbarItem(2, icon2, "description2", pendingIntent)
   .build();
   customTabsIntent.launchUrl(this, Uri.parse("http://zaim.net"));
   @androhi 9
   

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10. Leanback ڧԽ
    4 GuidedStepFragment ͷେ෯ͳվળ
    4 ࠓճ͸ࢼͤ·ͤΜͰͨ͠...
    @androhi 10
    

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11. RecyclerViewͷ
    ࣗಈαΠζௐ੔ػೳ
    @androhi 11
    

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12. WRAP_CONTENT ͷ༗ޮԽ
    RecyclerView ΛίϯςϯπͷαΠζʹԠͯ͡α
    ΠζมߋͰ͖ΔΑ͏ʹͳΓ·͢ɻͭ·ΓɺҎલ͸
    Ͱ͖ͳ͔ͬͨ RecyclerView ͷੇ๏஋ʹ
    WRAP_CONTENT Λ࢖༻͢Δ͜ͱ͕Ͱ͖ΔΑ͏
    ʹͳ͍ͬͯ·͢ɻ
    — Google Developers Japan
    @androhi 12
    

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13. activity.xml
    
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    android:id="@+id/recycler_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#ff0000"/>
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_below="@id/recycler_view"
    android:background="#00ff00"
    android:text="Test"/>
    
    @androhi 13
    

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14. list_item.xml
    
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
    android:id="@+id/list_text"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>
    
    @androhi 14
    

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15. @androhi 15
    

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16. @androhi 16
    

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17. ΋͜͠Μͳ list_item.xml ͩͬͨ
    Β...
    
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    android:id="@+id/list_text"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>
    
    @androhi 17
    

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18. @androhi 18
    

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19. v23.1 -> v23.2 ͷΞοϓσʔτ
    RecyclerView ͷ࢖༻Օॴ͸ཁ஫ҙ
    @androhi 19
    

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20. LayoutManager ͷมߋ
    ϏϧτΠϯͷ LayoutManager ΛܧঝͤͣɺΧε
    λϜͷ LayoutManager Λ࢖༻͍ͯ͠Δ৔߹ɺ͜
    Ε͸ΦϓτΠϯ API ʹͳΓ·͢ɻ
    setAutoMeasureEnabled(true) Λݺͼग़͠ɺ
    ϝιουͷ Javadoc ʹৄ͘͠هࡌ͞Ε͍ͯΔͱ
    ͓Γɺࡉ͔ͳมߋΛՃ͑Δඞཁ͕͋Γ·͢ɻ
    — Google Developers Japan
    @androhi 20
    

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21. LayoutManager#setAutoMeasureEn
    abled(boolean)
    ϨΠΞ΢τͷଌఆ( onMeasure )Λɺ
    RecyclerView ͕ߦ͏( =true )ͷ͔
    LayoutManager ͕ߦ͏( =false )ͷ͔Λఆٛ͢
    Δϝιουɻ
    -> RecyclerView ͕ଌఆ͢Δ৔߹͸ɺࢠͷཁૉ͔
    ΒαΠζΛࣗಈܭࢉ͢Δɻ
    @androhi 21
    

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22. v23.1 ͷ LinearLayoutManager
    // Constructor
    public LinearLayoutManager(Context context, int orientation,
    boolean reverseLayout) {
    setOrientation(orientation);
    setReverseLayout(reverseLayout);
    }
    @androhi 22
    

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23. v23.2 ͷ LinearLayoutManager
    public LinearLayoutManager(Context context, int orientation,
    boolean reverseLayout) {
    setOrientation(orientation);
    setReverseLayout(reverseLayout);
    setAutoMeasureEnabled(true);
    }
    @androhi 23
    

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24. LayoutManager ΛΧελϜͯ͠Δ
    ͳΒ
    onMeasure Λ override ͍ͯ͠Δ৔߹͸ɺΧε
    λϜ LayoutMnagerͷதͰ
    setAutoMeasureEnabled(false) ΛݺͿɻ
    @androhi 24
    

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25. ·ͱΊ
    4 VectorDrawable αϙʔτ࠷ߴ
    4 RecyclerView ͸ཁ஫ҙ
    @androhi 25
    

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