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

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:paddingStart="24dp"
    android:paddingEnd="24dp"
    tools:background="?dialog_background_color">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/safety_number_change_dialog__the_following_people_may_have_reinstalled_or_changed_devices" />

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/safety_number_change_dialog_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:scrollIndicators="top|bottom"
        android:scrollbars="vertical"
        tools:listitem="@layout/safety_number_change_recipient" />

</LinearLayout>