res/layout/activity_top_level_desktop.xml

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

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="false">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <com.google.android.material.tabs.TabLayout
            android:id="@+id/tab_layout"
            style="@style/CategoryTabLayout"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"></com.google.android.material.tabs.TabLayout>

        <FrameLayout
            android:id="@+id/fragment_container"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:visibility="gone" />

        <FrameLayout
            android:id="@+id/loading_indicator_container"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <ProgressBar
                android:id="@+id/loading_indicator"
                android:layout_width="@dimen/tile_desktop_progress_bar_size"
                android:layout_height="@dimen/tile_desktop_progress_bar_size"
                android:layout_gravity="center"
                android:indeterminate="true"
                android:indeterminateTint="?android:colorAccent" />

        </FrameLayout>

    </LinearLayout>

    <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:id="@+id/coordinator_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom">

        <LinearLayout
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:id="@+id/bottom_sheet"
            android:layout_width="match_parent"
            android:layout_height="@dimen/current_wallpaper_bottom_sheet_layout_height"
            android:layout_gravity="bottom"
            android:background="@color/translucent_black_90_alpha"
            android:minHeight="@dimen/current_wallpaper_bottom_sheet_explore_button_margin_top"
            android:orientation="vertical"
            android:visibility="gone"
            app:behavior_peekHeight="0dp"
            app:layout_behavior="com.google.android.material.bottomsheet.BottomSheetBehavior">

            <LinearLayout
                android:id="@+id/bottom_sheet_contents"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="horizontal">

                <com.android.wallpaper.widget.WallpaperThumbnailView
                    android:id="@+id/current_wallpaper_image"
                    android:layout_width="wrap_content"
                    android:layout_height="@dimen/current_wallpaper_bottom_sheet_thumb_height"
                    android:layout_margin="@dimen/current_wallpaper_bottom_sheet_thumb_margin"
                    android:contentDescription="@string/currently_set_wallpaper_thumbnail" />

                <FrameLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent">

                    <LinearLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_gravity="top"
                        android:layout_marginEnd="@dimen/current_wallpaper_bottom_sheet_margin_sides"
                        android:layout_marginRight="@dimen/current_wallpaper_bottom_sheet_margin_sides"
                        android:orientation="vertical">

                        <TextView
                            android:id="@+id/current_wallpaper_presentation_mode"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:layout_marginLeft="@dimen/current_wallpaper_bottom_sheet_margin_sides"
                            android:layout_marginStart="@dimen/current_wallpaper_bottom_sheet_margin_sides"
                            android:layout_marginTop="@dimen/current_wallpaper_bottom_sheet_presentation_mode_margin_top"
                            android:textColor="?android:colorAccent"
                            android:textSize="@dimen/current_wallpaper_bottom_sheet_presentation_mode_text_size"
                            android:textStyle="bold" />

                        <TextView
                            android:id="@+id/current_wallpaper_title"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:layout_marginLeft="@dimen/current_wallpaper_bottom_sheet_margin_sides"
                            android:layout_marginStart="@dimen/current_wallpaper_bottom_sheet_margin_sides"
                            android:layout_marginTop="@dimen/current_wallpaper_bottom_sheet_title_margin_top"
                            android:ellipsize="end"
                            android:maxLines="2"
                            android:textColor="@color/material_white_text"
                            android:textSize="@dimen/current_wallpaper_bottom_sheet_title_text_size" />

                        <TextView
                            android:id="@+id/current_wallpaper_subtitle"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:layout_marginLeft="@dimen/current_wallpaper_bottom_sheet_margin_sides"
                            android:layout_marginStart="@dimen/current_wallpaper_bottom_sheet_margin_sides"
                            android:layout_marginTop="@dimen/current_wallpaper_bottom_sheet_subtitle_margin_top"
                            android:ellipsize="end"
                            android:maxLines="2"
                            android:textColor="@color/white_70_alpha"
                            android:textSize="@dimen/current_wallpaper_bottom_sheet_subtitle_text_size" />

                        <LinearLayout
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:orientation="horizontal">

                            <Button
                                android:id="@+id/current_wallpaper_explore_button"
                                style="?attr/borderlessButtonStyle"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:layout_marginEnd="@dimen/current_wallpaper_bottom_sheet_explore_button_margin_end"
                                android:layout_marginLeft="@dimen/current_wallpaper_bottom_sheet_explore_button_margin_start"
                                android:layout_marginRight="@dimen/current_wallpaper_bottom_sheet_explore_button_margin_end"
                                android:layout_marginStart="@dimen/current_wallpaper_bottom_sheet_explore_button_margin_start"
                                android:layout_marginTop="@dimen/current_wallpaper_bottom_sheet_explore_button_margin_top"
                                android:clickable="true"
                                android:contentDescription="@string/explore"
                                android:drawablePadding="@dimen/explore_button_drawable_padding"
                                android:focusable="true"
                                android:text="@string/explore"
                                android:textColor="?android:colorAccent"
                                android:textSize="@dimen/current_wallpaper_bottom_sheet_explore_button_text_size"
                                android:visibility="gone" />

                            <Button
                                android:id="@+id/current_wallpaper_skip_wallpaper_button"
                                style="?attr/borderlessButtonStyle"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:layout_marginTop="@dimen/current_wallpaper_bottom_sheet_explore_button_margin_top"
                                android:clickable="true"
                                android:contentDescription="@string/next_wallpaper"
                                android:drawablePadding="@dimen/explore_button_drawable_padding"
                                android:focusable="true"
                                android:text="@string/next_wallpaper"
                                android:textColor="?android:colorAccent"
                                android:textSize="@dimen/current_wallpaper_bottom_sheet_explore_button_text_size"
                                android:visibility="gone" />

                        </LinearLayout>

                        <LinearLayout
                            android:id="@+id/desktop_wallpaper_position_options"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:orientation="horizontal"
                            android:visibility="gone">

                            <Button
                                android:id="@+id/wallpaper_position_option_center"
                                style="?attr/borderlessButtonStyle"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:drawablePadding="@dimen/current_wallpaper_bottom_sheet_wallpaper_position_drawable_padding"
                                android:text="@string/center_wallpaper_position"
                                android:textColor="@color/material_grey500" />

                            <Button
                                android:id="@+id/wallpaper_position_option_center_crop"
                                style="?attr/borderlessButtonStyle"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:drawablePadding="@dimen/current_wallpaper_bottom_sheet_wallpaper_position_drawable_padding"
                                android:text="@string/center_crop_wallpaper_position"
                                android:textColor="@color/material_grey500" />

                            <Button
                                android:id="@+id/wallpaper_position_option_stretched"
                                style="?attr/borderlessButtonStyle"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:drawablePadding="@dimen/current_wallpaper_bottom_sheet_wallpaper_position_drawable_padding"
                                android:text="@string/stretch_wallpaper_position"
                                android:textColor="@color/material_grey500" />

                        </LinearLayout>

                    </LinearLayout>

                </FrameLayout>

            </LinearLayout>

        </LinearLayout>

    </androidx.coordinatorlayout.widget.CoordinatorLayout>

</FrameLayout>