res/layout/search_bar.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.
  -->

<merge
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <com.android.car.media.common.MediaAppSelectorWidget
        android:id="@+id/app_icon_container"
        android:layout_width="@dimen/appbar_view_icon_touch_target_size"
        android:layout_height="@dimen/appbar_view_icon_touch_target_size"
        android:padding="@dimen/app_switch_widget_icon_padding"
        android:orientation="horizontal"
        android:gravity="center"
        android:background="@drawable/appbar_view_icon_background"
        app:switchingEnabled="false"
        app:appIconSize="@dimen/appbar_view_search_app_icon_size"/>

    <EditText
        android:id="@+id/search_bar"
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:paddingStart="@dimen/appbar_view_search_bar_padding"
        android:layout_marginStart="@dimen/appbar_view_search_app_icon_margin"
        android:layout_marginEnd="@dimen/appbar_view_search_bar_end_margin"
        android:hint="@string/search_hint"
        android:textColorHint="@color/search_hint_text_color"
        android:textCursorDrawable="@null"
        android:backgroundTint="@color/search_bar_underline_color"
        android:inputType="text"
        android:singleLine="true"
        android:imeOptions="actionDone"
        android:cursorVisible="false"/>

    <ImageView
        android:id="@+id/search_close"
        android:layout_width="@dimen/appbar_view_icon_touch_target_size"
        android:layout_height="@dimen/appbar_view_icon_touch_target_size"
        android:layout_marginStart="@dimen/appbar_view_search_close_icon_margin"
        android:padding="@dimen/appbar_view_icon_padding"
        android:background="@drawable/appbar_view_icon_background"
        android:visibility="gone"
        android:src="@drawable/ic_close"/>
</merge>