car-ui-lib/referencedesign/res/layout-ldrtl/car_ui_recyclerview_scrollbar.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright 2019 The Android Open Source Project
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~      http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License.
  -->

<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="@dimen/car_ui_scrollbar_container_width"
    android:layout_height="match_parent"
    android:id="@+id/car_ui_scroll_bar"
    android:gravity="center">

    <ImageView
        android:id="@+id/car_ui_scrollbar_page_up"
        android:layout_width="@dimen/car_ui_scrollbar_button_size"
        android:layout_height="@dimen/car_ui_scrollbar_button_size"
        android:background="@drawable/car_ui_recyclerview_button_ripple_background"
        android:contentDescription="@string/car_ui_scrollbar_page_up_button"
        android:focusable="false"
        android:hapticFeedbackEnabled="false"
        android:src="@drawable/car_ui_recyclerview_ic_up"
        android:scaleType="centerInside"
        android:layout_marginTop="15dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"/>

    <!-- View height is dynamically calculated during layout. -->
    <View
        android:id="@+id/car_ui_scrollbar_thumb"
        android:layout_width="@dimen/car_ui_scrollbar_thumb_width"
        android:layout_height="0dp"
        android:layout_gravity="center_horizontal"
        android:background="@drawable/car_ui_recyclerview_scrollbar_thumb"
        app:layout_constraintTop_toBottomOf="@+id/car_ui_scrollbar_page_up"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"/>

    <View
        android:id="@+id/car_ui_scrollbar_track"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginTop="@dimen/car_ui_scrollbar_separator_margin"
        android:layout_marginBottom="@dimen/car_ui_scrollbar_separator_margin"
        app:layout_constraintTop_toBottomOf="@+id/car_ui_scrollbar_page_up"
        app:layout_constraintBottom_toTopOf="@+id/car_ui_scrollbar_page_down"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"/>

    <ImageView
        android:id="@+id/car_ui_scrollbar_page_down"
        android:layout_width="@dimen/car_ui_scrollbar_button_size"
        android:layout_height="@dimen/car_ui_scrollbar_button_size"
        android:background="@drawable/car_ui_recyclerview_button_ripple_background"
        android:contentDescription="@string/car_ui_scrollbar_page_down_button"
        android:focusable="false"
        android:hapticFeedbackEnabled="false"
        android:src="@drawable/car_ui_recyclerview_ic_down"
        android:scaleType="centerInside"
        android:layout_marginBottom="15dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>