res/layout/alarm_volume_preference.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2015 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:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="?attr/selectableItemBackground"
    android:clipToPadding="false"
    android:focusable="true"
    android:gravity="center_vertical"
    android:minHeight="?attr/listPreferredItemHeightSmall"
    android:orientation="vertical"
    android:paddingBottom="16dp"
    android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
    android:paddingStart="?android:attr/listPreferredItemPaddingStart"
    android:paddingTop="16dp">

    <TextView
        android:id="@android:id/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ellipsize="marquee"
        android:singleLine="true"
        android:textAppearance="@style/Preference_TextAppearanceMaterialSubhead"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="16dp">

        <ImageView
            android:id="@+id/alarm_icon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"/>

        <SeekBar
            android:id="@+id/alarm_volume_slider"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_weight="1"/>

    </LinearLayout>

</LinearLayout>