How to make a Relative Layout Duplicate Itself Inside a Linear Layout On Button Click

I have an alert dialogue set up inside a RelativeLayout. A small section is a ListView with a RelativeLayout inside. My xml file is as follows:

<ScrollView xmlns:android="http://ift.tt/nIICcg">
<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent" 
    android:padding="10dp">

 ...

<ListView
    android:layout_width="match_parent"
    android:layout_height="match_parent" 
    android:layout_below="@id/bar_main"
    android:id="@+id/dialoguelistview"
    android:padding="10dp">
<RelativeLayout>    
    <EditText
        android:id="@+id/Item"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"          
        android:hint="@string/Item" 
        />

    <EditText
        android:id="@+id/Quantity"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="15dp"
        android:layout_alignParentLeft="true"
        android:hint="@string/Quantity" 
        android:layout_below="@id/Item"/>

    <EditText
        android:id="@+id/Cost"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="15dp"
        android:layout_toRightOf="@id/Quantity"
        android:hint="@string/Cost" 
        android:layout_below="@id/Item"/>

    <Button
        android:id="@+id/Button01"
        android:layout_width="30dip" 
        android:layout_height="30dip" 
        android:layout_alignParentRight="true"
        android:layout_marginTop="20dp"
        android:layout_marginRight="10dp"
        android:layout_below="@id/Item"
        android:background="@drawable/round_button"
        android:text="@string/another_item"
        android:textColor="#fff" 
        android:onClick = "addAnotherItem"></Button>

 </RelativeLayout>
 </ListView>

...

</RelativeLayout>
</ScrollView>

When the button is clicked, I need the inner relative layout to duplicate itself inside the list view. How can I do this? Thanks in advance!