Signal-Android/app/src/main/res/layout/activity_contact_share_edit.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="match_parent">

    <androidx.appcompat.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="@dimen/signal_m3_toolbar_height"
        android:minHeight="@dimen/signal_m3_toolbar_height"
        app:layout_constraintTop_toTopOf="parent"
        app:navigationIcon="@drawable/ic_arrow_left_24"
        app:title="@string/ContactShareEditActivity__send_contact"
        app:titleTextAppearance="@style/Signal.Text.TitleLarge" />

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/contact_share_edit_list"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:clipToPadding="false"
        android:paddingBottom="80dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintTop_toBottomOf="@id/toolbar" />

    <ImageView
        android:id="@+id/contact_share_edit_send"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:layout_margin="@dimen/floating_action_button_margin"
        android:background="@drawable/circle_tintable"
        android:contentDescription="@string/conversation_activity__send"
        android:scaleType="centerInside"
        app:backgroundTint="@color/signal_colorPrimary"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:srcCompat="@drawable/ic_send_lock_24"
        app:tint="@color/white" />

</androidx.constraintlayout.widget.ConstraintLayout>