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

<?xml version="1.0" encoding="utf-8"?>

<merge
    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">

  <androidx.constraintlayout.widget.ConstraintLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:paddingTop="16dp"
      android:paddingStart="8dp"
      android:paddingEnd="8dp"
      android:paddingBottom="8dp"
      android:background="?megaphone_background"
      android:clickable="true">

    <ImageView
        android:id="@+id/basic_megaphone_image"
        android:layout_width="64dp"
        android:layout_height="64dp"
        android:layout_marginStart="8dp"
        android:scaleType="centerInside"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:src="@tools:sample/avatars"/>

    <org.thoughtcrime.securesms.components.emoji.EmojiTextView
        android:id="@+id/basic_megaphone_title"
        style="@style/Signal.Text.Body"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="12dp"
        android:layout_marginEnd="8dp"
        android:fontFamily="sans-serif-medium"
        app:layout_constraintStart_toEndOf="@id/basic_megaphone_image"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="@id/basic_megaphone_image"
        tools:text="Avengers HQ Destroyed!" />

    <org.thoughtcrime.securesms.components.emoji.EmojiTextView
        android:id="@+id/basic_megaphone_body"
        style="@style/Signal.Text.Preview"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:textColor="?megaphone_body_text_color"
        app:layout_constraintStart_toStartOf="@id/basic_megaphone_title"
        app:layout_constraintTop_toBottomOf="@id/basic_megaphone_title"
        app:layout_constraintEnd_toEndOf="parent"
        tools:text="Where was the 'hero' Spider-Man during the battle?" />

    <androidx.constraintlayout.widget.Barrier
        android:id="@+id/basic_megaphone_content_barrier"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:barrierDirection="bottom"
        app:constraint_referenced_ids="basic_megaphone_image,basic_megaphone_body,basic_megaphone_title"/>

    <Button
        android:id="@+id/basic_megaphone_action"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="4dp"
        style="@style/Button.Borderless"
        app:layout_constraintStart_toEndOf="@id/basic_megaphone_secondary"
        app:layout_constraintTop_toBottomOf="@id/basic_megaphone_content_barrier"
        app:layout_constraintEnd_toEndOf="parent"
        tools:text="*sigh*"
        tools:visibility="visible"/>

    <Button
        android:id="@+id/basic_megaphone_secondary"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="4dp"
        android:text="@string/Megaphones_remind_me_later"
        style="@style/Button.Borderless"
        app:layout_constraintTop_toBottomOf="@id/basic_megaphone_content_barrier"
        app:layout_constraintEnd_toStartOf="@id/basic_megaphone_action"
        app:layout_constraintStart_toStartOf="parent"
        tools:visibility="visible"/>

  </androidx.constraintlayout.widget.ConstraintLayout>

</merge>