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

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <androidx.appcompat.widget.Toolbar
        style="?actionBarStyle"
        android:theme="?actionBarStyle"
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        app:titleTextAppearance="@style/TextSecure.TitleTextStyle"
        app:subtitleTextAppearance="@style/TextSecure.SubtitleTextStyle"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ScrollView android:layout_width="match_parent"
                android:layout_height="0dp"
                android:fillViewport="true"
                android:clickable="false"
                app:layout_constraintTop_toBottomOf="@id/toolbar"
                app:layout_constraintBottom_toBottomOf="parent">

        <LinearLayout android:layout_gravity="center"
                      android:layout_height="wrap_content"
                      android:layout_width="match_parent"
                      android:orientation="vertical"
                      android:paddingTop="14dp"
                      android:paddingStart="28dp"
                      android:paddingEnd="28dp">

            <TextView android:layout_width="match_parent"
                      android:layout_height="wrap_content"
                      android:textAppearance="@style/TextAppearance.Signal.Title2"
                      android:text="@string/InviteActivity_friends_dont_let_friends_text_unencrypted"
                      android:textColor="?title_text_color_primary"
                      android:gravity="center_horizontal"
                      android:layout_marginBottom="30dp"
                      android:layout_marginTop="18dp"
                      android:paddingStart="10dp"/>

            <EditText android:id="@+id/invite_text"
                      android:layout_width="match_parent"
                      android:layout_height="wrap_content"
                      android:minLines="2"
                      tools:text="Let's switch to Signal: https://sgnl.link/asdfdfsa"
                      android:textAppearance="@style/TextAppearance.AppCompat.Subhead"
                      android:background="?attr/invite_edit_text_background"
                      android:paddingTop="10dp"
                      android:paddingBottom="10dp"
                      android:textColor="?title_text_color_primary"
                      android:paddingStart="10dp"
                      android:paddingEnd="20dp"
                      android:minHeight="@dimen/invite_edit_text_min_height"
                      android:gravity="top"
                      android:inputType="textShortMessage|textMultiLine"/>

            <Button android:id="@+id/sms_button"
                android:layout_gravity="center_horizontal"
                android:text="@string/InviteActivity_share_with_contacts"
                android:layout_marginTop="16dp"
                android:textColor="?conversation_title_color"
                android:background="@drawable/cta_button_background"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />

            <androidx.appcompat.widget.AppCompatButton
                android:id="@+id/share_button"
                style="@style/Button.Borderless"
                app:drawableStartCompat="?invite_share_icon"
                android:drawablePadding="4dp"
                android:layout_marginTop="16dp"
                android:text="@string/InviteActivity_choose_how_to_share"
                android:layout_width="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_height="wrap_content" />

        </LinearLayout>
    </ScrollView>

    <LinearLayout android:id="@+id/sms_send_frame"
                  android:layout_width="match_parent"
                  android:layout_height="0dp"
                  android:background="?android:windowBackground"
                  android:orientation="vertical"
                  android:visibility="gone"
                  app:layout_constraintBottom_toBottomOf="parent"
                  app:layout_constraintTop_toBottomOf="@id/toolbar">

        <org.thoughtcrime.securesms.components.ContactFilterToolbar
            android:id="@+id/contact_filter"
            android:layout_height="?attr/actionBarSize"
            android:layout_width="match_parent"
            android:minHeight="?attr/actionBarSize"
            android:background="@color/core_ultramarine"
            android:elevation="4dp"
            app:searchTextStyle="@style/TextSecure.TitleTextStyle.Light" />

        <fragment android:id="@+id/contact_selection_list_fragment"
                  android:layout_width="match_parent"
                  android:layout_height="0dp"
                  android:layout_weight="1"
                  android:name="org.thoughtcrime.securesms.ContactSelectionListFragment"
                  tools:layout="@layout/contact_selection_list_fragment"/>

        <LinearLayout android:layout_width="match_parent"
                      android:layout_height="wrap_content"
                      android:gravity="end"
                      android:padding="10dp"
                      android:orientation="horizontal">

            <Button android:id="@+id/cancel_sms_button"
                    style="@style/Widget.AppCompat.Button.Borderless"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/InviteActivity_cancel" />

            <Button android:id="@+id/send_sms_button"
                    style="@style/Button.Borderless"
                    android:enabled="false"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    tools:text="Send to 0 friends"/>

        </LinearLayout>
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>