FairEmail/app/src/main/res/layout/activity_widget.xml

<?xml version="1.0" encoding="utf-8"?>
<eu.faircode.email.ScrollViewEx 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:padding="12dp"
    android:scrollbarStyle="outsideOverlay"
    tools:context="eu.faircode.email.ActivityWidget">

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

        <TextView
            android:id="@+id/tvAccount"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/title_widget_account"
            android:textAppearance="@style/TextAppearance.AppCompat.Small"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <Spinner
            android:id="@+id/spAccount"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvAccount" />

        <CheckBox
            android:id="@+id/cbDayNight"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="12dp"
            android:checked="true"
            android:text="@string/title_widget_day_night"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/spAccount" />

        <CheckBox
            android:id="@+id/cbSemiTransparent"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="12dp"
            android:layout_marginTop="12dp"
            android:checked="true"
            android:text="@string/title_widget_semi_transparent"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/cbDayNight" />

        <eu.faircode.email.ViewButtonColor
            android:id="@+id/btnColor"
            style="?android:attr/buttonStyleSmall"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="12dp"
            android:layout_marginTop="12dp"
            android:paddingHorizontal="6dp"
            android:tag="disable"
            android:text="@string/title_widget_background"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/cbSemiTransparent" />

        <androidx.constraintlayout.widget.ConstraintLayout
            android:id="@+id/clLayout"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="24dp"
            android:background="@android:color/darker_gray"
            android:padding="24dp"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/btnColor">

            <include
                android:id="@+id/inOld"
                layout="@layout/widget"
                android:layout_width="50dp"
                android:layout_height="50dp"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent" />

            <include
                android:id="@+id/inNew"
                layout="@layout/widget_new"
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:layout_marginStart="24dp"
                app:layout_constraintStart_toEndOf="@+id/inOld"
                app:layout_constraintTop_toTopOf="parent" />

            <RadioButton
                android:id="@+id/rbOld"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="12dp"
                app:layout_constraintEnd_toEndOf="@id/inOld"
                app:layout_constraintStart_toStartOf="@+id/inOld"
                app:layout_constraintTop_toBottomOf="@id/inOld" />

            <RadioButton
                android:id="@+id/rbNew"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="12dp"
                android:checked="true"
                app:layout_constraintEnd_toEndOf="@id/inNew"
                app:layout_constraintStart_toStartOf="@+id/inNew"
                app:layout_constraintTop_toBottomOf="@id/inNew" />
        </androidx.constraintlayout.widget.ConstraintLayout>

        <Button
            android:id="@+id/btnSave"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="24dp"
            android:drawableEnd="@drawable/twotone_save_alt_24"
            android:drawablePadding="6dp"
            android:text="@string/title_save"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/clLayout" />

        <eu.faircode.email.ContentLoadingProgressBar
            android:id="@+id/pbWait"
            style="@style/Base.Widget.AppCompat.ProgressBar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:indeterminate="true"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <androidx.constraintlayout.widget.Group
            android:id="@+id/grpReady"
            android:layout_width="0dp"
            android:layout_height="0dp"
            app:constraint_referenced_ids="tvAccount,spAccount,cbSemiTransparent,btnColor,clLayout,btnSave" />
    </androidx.constraintlayout.widget.ConstraintLayout>
</eu.faircode.email.ScrollViewEx>