ListView修改快速滑动的滑块

<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" />

<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>

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

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