res/layout/preference_dialog_animation_scale.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2017 The Pure Nexus 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.
-->

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:settings="http://schemas.android.com/apk/res/com.android.settings"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:padding="12dp">

        <!-- Static height enough to accommodate the text views in their biggest possible size,
        without having the dialog resize itself at any point. -->
        <LinearLayout android:id="@+id/container"
                 android:orientation="vertical"
                 android:layout_width="match_parent"
                 android:layout_height="64dp"
                 android:gravity="center_horizontal|center_vertical">

                <TextView android:id="@+id/scale"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:textAppearance="?android:textAppearanceLarge" />

        </LinearLayout>

        <com.android.settings.IntervalSeekBar android:id="@+id/scale_seekbar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:padding="8dp"
                android:layout_below="@+id/container"
                settings:minI="0"
                settings:maxI="1.5"
                settings:defaultValue="1.0"
                settings:digits="2" />

</RelativeLayout>