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

<?xml version="1.0" encoding="utf-8"?>
<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="match_parent"
    android:layout_height="wrap_content">

    <include
        android:id="@+id/inAddresses"
        layout="@layout/include_message_addresses"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <include
        android:id="@+id/inHeaders"
        layout="@layout/include_message_headers"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/inAddresses" />

    <include
        android:id="@+id/inAttachments"
        layout="@layout/include_message_attachments"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/inHeaders" />

    <include
        android:id="@+id/inNavigation"
        layout="@layout/include_message_navigation"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/inAttachments" />

    <eu.faircode.email.ContentLoadingProgressBar
        android:id="@+id/pbBody"
        style="@style/Base.Widget.AppCompat.ProgressBar"
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:indeterminate="true"
        android:padding="12dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/inNavigation" />

    <TextView
        android:id="@+id/tvNoInternetBody"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="12dp"
        android:text="@string/title_no_internet"
        android:textAppearance="@style/TextAppearance.AppCompat.Small"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/inNavigation" />

    <TextView
        android:id="@+id/tvBody"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="6dp"
        android:layout_marginTop="3dp"
        android:layout_marginEnd="6dp"
        android:fontFamily="monospace"
        android:minHeight="60dp"
        android:paddingBottom="6dp"
        android:text="Body"
        android:textAppearance="@style/TextAppearance.AppCompat.Small"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/tvNoInternetBody" />
</androidx.constraintlayout.widget.ConstraintLayout>