packages/SystemUI/res/layout/media_output_list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2020 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.
  -->

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/device_container"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="64dp"
        android:layout_marginStart="16dp"
        android:layout_marginEnd="16dp"
        android:layout_marginBottom="12dp">
        <FrameLayout
            android:id="@+id/item_layout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@drawable/media_output_item_background"
            android:layout_gravity="center_vertical|start">
            <SeekBar
                android:id="@+id/volume_seekbar"
                android:splitTrack="false"
                android:visibility="gone"
                android:paddingStart="0dp"
                android:paddingEnd="0dp"
                android:progressDrawable="@drawable/media_output_dialog_seekbar_background"
                android:thumb="@null"
                android:layout_width="match_parent"
                android:layout_height="match_parent"/>
        </FrameLayout>

        <FrameLayout
            android:layout_width="56dp"
            android:layout_height="64dp"
            android:layout_gravity="center_vertical|start">
            <ImageView
                android:id="@+id/title_icon"
                android:layout_width="24dp"
                android:layout_height="24dp"
                android:layout_gravity="center"/>
        </FrameLayout>

        <TextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical|start"
            android:layout_marginStart="56dp"
            android:layout_marginEnd="56dp"
            android:ellipsize="end"
            android:maxLines="1"
            android:fontFamily="@*android:string/config_headlineFontFamilyMedium"
            android:textSize="16sp"/>

        <LinearLayout
            android:id="@+id/two_line_layout"
            android:orientation="vertical"
            android:layout_width="wrap_content"
            android:layout_gravity="center_vertical|start"
            android:layout_height="48dp"
            android:layout_marginEnd="56dp"
            android:layout_marginStart="56dp">
            <TextView
                android:id="@+id/two_line_title"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:ellipsize="end"
                android:maxLines="1"
                android:fontFamily="@*android:string/config_headlineFontFamilyMedium"
                android:textColor="@color/media_dialog_item_main_content"
                android:textSize="16sp"/>
            <TextView
                android:id="@+id/subtitle"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:ellipsize="end"
                android:maxLines="1"
                android:textColor="@color/media_dialog_item_main_content"
                android:textSize="14sp"
                android:fontFamily="@*android:string/config_bodyFontFamily"
                android:visibility="gone"/>
        </LinearLayout>

        <ProgressBar
            android:id="@+id/volume_indeterminate_progress"
            style="?android:attr/progressBarStyleSmallTitle"
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:layout_marginEnd="16dp"
            android:indeterminate="true"
            android:layout_gravity="right|center"
            android:indeterminateOnly="true"
            android:visibility="gone"/>

        <ImageView
            android:id="@+id/media_output_item_status"
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:layout_marginEnd="16dp"
            android:indeterminate="true"
            android:layout_gravity="right|center"
            android:indeterminateOnly="true"
            android:importantForAccessibility="no"
            android:visibility="gone"/>

        <LinearLayout
            android:id="@+id/end_action_area"
            android:visibility="gone"
            android:orientation="vertical"
            android:layout_width="48dp"
            android:layout_height="64dp"
            android:layout_gravity="right|center"
            android:gravity="center_vertical">
        <CheckBox
            android:id="@+id/check_box"
            android:focusable="false"
            android:importantForAccessibility="no"
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:layout_marginEnd="16dp"
            android:layout_gravity="right"
            android:button="@drawable/ic_circle_check_box"
            android:visibility="gone"
        />

        </LinearLayout>
    </FrameLayout>
</LinearLayout>