res/layout/set_wallpaper_dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2023 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.
-->
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:paddingStart="@dimen/spacing_8dp"
    android:paddingEnd="@dimen/spacing_8dp"
    android:paddingBottom="@dimen/set_wallpaper_dialog_bottom_padding">

    <TextView
        android:id="@+id/title"
        style="@style/TextAppearance.SetWallpaperDialog.Title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/set_wallpaper_button_text"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

    <FrameLayout
        android:id="@+id/preview_container"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintTop_toBottomOf="@+id/title"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent">
        <include layout="@layout/set_wallpaper_dialog_foldable_preview"
            android:id="@+id/foldable_previews"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:paddingTop="@dimen/abc_dialog_title_divider_material"
            android:paddingBottom="@dimen/abc_dialog_title_divider_material"
            android:visibility="gone">
        </include>
        <include layout="@layout/set_wallpaper_dialog_handheld_preview"
            android:id="@+id/handheld_previews"
            android:layout_width="@dimen/set_wallpaper_dialog_handheld_width"
            android:layout_height="wrap_content"
            android:paddingTop="@dimen/abc_dialog_title_divider_material"
            android:paddingBottom="@dimen/abc_dialog_title_divider_material"
            android:visibility="gone">
        </include>
    </FrameLayout>

    <Button
        android:id="@+id/button_set"
        style="@style/SetWallpaperDialog.Button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/set_wallpaper_dialog_set_button"
        android:layout_marginVertical="@dimen/set_wallpaper_dialog_button_margin_vertical"
        app:layout_constraintTop_toBottomOf="@id/preview_container"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"/>

    <Button
        android:id="@+id/button_cancel"
        style="@style/SetWallpaperDialog.Button.OutlinedButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/cancel"
        android:layout_marginEnd="@dimen/spacing_8dp"
        android:layout_marginVertical="@dimen/set_wallpaper_dialog_button_margin_vertical"
        app:layout_constraintTop_toBottomOf="@id/preview_container"
        app:layout_constraintEnd_toStartOf="@+id/button_set"/>

</androidx.constraintlayout.widget.ConstraintLayout>