Signal-Android/res/layout/contact_selection_group_activity.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical">
			  
    <ListView android:id="@android:id/list"
            android:layout_width="fill_parent" 
            android:layout_height="fill_parent"
            android:fastScrollEnabled="true"/>

    <ScrollView android:id="@android:id/empty"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:fillViewport="true">
        
        <TextView android:id="@+id/emptyText"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="@string/contact_selection_group_activity__no_contacts"
            android:textSize="20sp"
            android:textColor="?android:attr/textColorSecondary"
            android:paddingLeft="10dip"
            android:paddingRight="10dip"
            android:paddingTop="10dip"
            android:lineSpacingMultiplier="0.92"
        />
    </ScrollView>    
</LinearLayout>