res/layout/car_right_system_bar.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
**
** Copyright 2018, 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.
*/
-->

<com.android.systemui.car.systembar.CarSystemBarView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:systemui="http://schemas.android.com/apk/res-auto"
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:background="@drawable/system_bar_background">

    <!-- phone.SystemBarView has rot0 and rot90 but we expect the car head unit to have a fixed
         rotation so skip this level of the hierarchy.
    -->
    <LinearLayout
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:id="@+id/nav_buttons"
        android:orientation="vertical"
        android:gravity="top"
        android:paddingTop="30dp"
        android:layout_weight="1"
        android:animateLayoutChanges="true">

        <com.android.systemui.car.systembar.CarSystemBarButton
            android:id="@+id/home"
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            systemui:intent="intent:#Intent;action=android.intent.action.MAIN;category=android.intent.category.HOME;launchFlags=0x14000000;end"
            android:src="@drawable/car_ic_overview"
            android:background="?android:attr/selectableItemBackground"
            android:paddingTop="30dp"
            android:paddingBottom="30dp"
        />

        <com.android.systemui.car.systembar.CarSystemBarButton
            android:id="@+id/grid"
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            systemui:intent="intent:#Intent;component=com.android.car.home/.AppGridActivity;launchFlags=0x14000000;end"
            systemui:longIntent="intent:#Intent;action=android.intent.action.MAIN;category=android.intent.category.HOME;launchFlags=0x14000000;end"
            android:src="@drawable/car_ic_apps"
            android:background="?android:attr/selectableItemBackground"
            android:paddingTop="30dp"
            android:paddingBottom="30dp"
        />

        <com.android.systemui.car.systembar.HvacButton
            android:id="@+id/hvac"
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            systemui:broadcast="true"
            android:src="@drawable/car_ic_hvac"
            android:background="?android:attr/selectableItemBackground"
            android:paddingTop="30dp"
            android:paddingBottom="30dp"
        />

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:gravity="bottom"
        android:orientation="vertical">

        <com.android.systemui.statusbar.AlphaOptimizedImageView
            android:id="@+id/note"
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            android:src="@drawable/car_ic_notification"
            android:background="?android:attr/selectableItemBackground"
            android:paddingTop="20dp"
            android:paddingBottom="20dp"
            android:alpha="0.7"
        />


        <com.android.systemui.statusbar.policy.Clock
            android:id="@+id/clock"
            android:textAppearance="@style/TextAppearance.StatusBar.Clock"
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            android:singleLine="true"
            android:paddingStart="@dimen/status_bar_clock_starting_padding"
            android:paddingEnd="@dimen/status_bar_clock_end_padding"
            android:gravity="center_horizontal"
            android:paddingBottom="20dp"
        />

        <Space
            android:layout_height="10dp"
            android:layout_width="match_parent"/>

    </LinearLayout>

</com.android.systemui.car.systembar.CarSystemBarView>