ListView修改快速滑动的滑块

1：如图

2： ListView加入快速滑动属性

 <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fastScrollEnabled="true"
        android:focusable="true"
        android:overScrollMode="never"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

　3：修改activity的主题

   <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        <item name="android:fastScrollThumbDrawable">@drawable/scroll_block</item>
    </style>

　4：如果是fragment则

   4.1：

 <style name="FragmentTheme1" parent="AppTheme">
        <item name="fragment_color_title">@color/styleColor1</item>
        <item name="android:fastScrollThumbDrawable">@drawable/scroll_block</item>
    </style>

　　4.2：

      ctxWithTheme = new ContextThemeWrapper(getActivity().getApplicationContext(), R.style.FragmentTheme1);
        localLayoutInflater = inflater.cloneInContext(ctxWithTheme);
        rootView = (ViewGroup) localLayoutInflater.inflate(R.layout.fragment_song, null, false);