Signal-Android/app/src/main/res/layout/chat_wallpaper_fragment.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fillViewport="true">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <View
            android:id="@+id/chat_wallpaper_preview_lightbox"
            android:layout_width="0dp"
            android:layout_height="320dp"
            android:background="@color/signal_background_tertiary"
            app:layout_constraintBottom_toBottomOf="@id/chat_wallpaper_preview_bottom_bar"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <View
            android:id="@+id/chat_wallpaper_preview_top_bar"
            android:layout_width="156dp"
            android:layout_height="30dp"
            android:background="@drawable/chat_wallpaper_preview_top_bar"
            app:layout_constraintBottom_toTopOf="@id/chat_wallpaper_preview_background"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_chainStyle="packed" />

        <ImageView
            android:id="@+id/chat_wallpaper_preview_background"
            android:layout_width="156dp"
            android:layout_height="228dp"
            android:importantForAccessibility="no"
            android:scaleType="fitXY"
            android:src="@drawable/test_gradient"
            app:layout_constraintBottom_toTopOf="@id/chat_wallpaper_preview_bottom_bar"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/chat_wallpaper_preview_top_bar"
            tools:background="@color/signal_background_primary" />

        <View
            android:id="@+id/chat_wallpaper_preview_bottom_bar"
            android:layout_width="156dp"
            android:layout_height="30dp"
            android:background="@drawable/chat_wallpaper_preview_bottom_bar"
            app:layout_constraintBottom_toBottomOf="@id/chat_wallpaper_preview_lightbox"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/chat_wallpaper_preview_background" />

        <androidx.appcompat.widget.AppCompatImageView
            android:id="@+id/chat_wallpaper_preview_bubble_1"
            android:layout_width="100dp"
            android:layout_height="30dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="30dp"
            app:layout_constraintStart_toStartOf="@id/chat_wallpaper_preview_background"
            app:layout_constraintTop_toTopOf="@id/chat_wallpaper_preview_background"
            app:srcCompat="@drawable/chat_wallpaper_preview_bubble"
            app:tint="@color/signal_accent_primary" />

        <androidx.appcompat.widget.AppCompatImageView
            android:id="@+id/chat_wallpaper_preview_bubble_2"
            android:layout_width="100dp"
            android:layout_height="30dp"
            android:layout_marginTop="66dp"
            android:layout_marginEnd="8dp"
            app:layout_constraintEnd_toEndOf="@id/chat_wallpaper_preview_background"
            app:layout_constraintTop_toTopOf="@id/chat_wallpaper_preview_background"
            app:srcCompat="@drawable/chat_wallpaper_preview_bubble"
            app:tint="@color/signal_background_tertiary" />

        <View
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:background="@drawable/chat_wallpaper_preview_outline"
            app:layout_constraintBottom_toBottomOf="@id/chat_wallpaper_preview_bottom_bar"
            app:layout_constraintEnd_toEndOf="@id/chat_wallpaper_preview_background"
            app:layout_constraintStart_toStartOf="@id/chat_wallpaper_preview_background"
            app:layout_constraintTop_toTopOf="@id/chat_wallpaper_preview_top_bar" />

        <TextView
            android:id="@+id/chat_wallpaper_set_wallpaper"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:layout_marginTop="16dp"
            android:background="?selectableItemBackground"
            android:gravity="center_vertical"
            android:paddingStart="16dp"
            android:paddingEnd="16dp"
            android:text="@string/ChatWallpaperFragment__set_wallpaper"
            android:textAppearance="@style/Signal.Text.Body"
            android:textColor="@color/signal_text_primary"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/chat_wallpaper_preview_lightbox" />

        <androidx.appcompat.widget.SwitchCompat
            android:id="@+id/chat_wallpaper_dark_theme_dims_wallpaper"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:gravity="center_vertical"
            android:paddingStart="16dp"
            android:paddingEnd="16dp"
            android:text="@string/ChatWallpaperFragment__dark_theme_dims_wallpaper"
            android:textAppearance="@style/Signal.Text.Body"
            android:textColor="@color/signal_text_primary"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/chat_wallpaper_set_wallpaper" />

        <View
            android:id="@+id/chat_wallpaper_divider"
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:layout_marginTop="16dp"
            android:background="@color/signal_inverse_transparent_15"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/chat_wallpaper_dark_theme_dims_wallpaper" />

        <TextView
            android:id="@+id/chat_wallpaper_clear_wallpaper"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:layout_marginTop="16dp"
            android:background="?selectableItemBackground"
            android:gravity="center_vertical"
            android:paddingStart="16dp"
            android:paddingEnd="16dp"
            android:text="@string/ChatWallpaperFragment__clear_wallpaper"
            android:textAppearance="@style/Signal.Text.Body"
            android:textColor="@color/signal_text_primary"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/chat_wallpaper_divider" />

        <TextView
            android:id="@+id/chat_wallpaper_reset_all_wallpapers"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:background="?selectableItemBackground"
            android:gravity="center_vertical"
            android:paddingStart="16dp"
            android:paddingEnd="16dp"
            android:text="@string/ChatWallpaperFragment__reset_all_wallpapers"
            android:textAppearance="@style/Signal.Text.Body"
            android:textColor="@color/signal_text_primary"
            android:visibility="gone"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/chat_wallpaper_clear_wallpaper"
            tools:visibility="visible" />

    </androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>