Colocando Scroll em ListView

Mobile
#1

Bom dia, ja pesquisei em vários tópicos, tentei diversas formas mas não consigo habilitar o Scroll de uma listview, código da mainActivity segue abaixo.

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginTop="4dp"
    android:layout_marginLeft="4dp"
    tools:context="br.com.melhoroferta.MainActivity">



    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scrollbars="vertical"
        >
<RelativeLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"

    >

            <ListView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:id="@+id/lv"
                android:scrollbars="vertical"

                ></ListView>
</RelativeLayout>
    </ScrollView>

    <android.support.design.widget.FloatingActionButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_marginRight="@dimen/fab_margin_right"
        android:layout_marginBottom="16dp"
        android:src="@drawable/ic_plus_add"
        android:elevation="6dp"
        android:id="@+id/fab_plus"
        app:pressedTranslationZ="12dp"
        android:scaleType="center"
        android:adjustViewBounds="true"




        />


    <android.support.design.widget.FloatingActionButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_marginRight="@dimen/fab_margin_right"
        android:layout_marginBottom="100dp"
        android:src="@drawable/ic_add_shopping_cart"
        android:elevation="6dp"
        android:id="@+id/fab_basket"
        app:pressedTranslationZ="12dp"
        app:backgroundTint="@color/fab2_color"
        android:visibility="invisible"/>

    <android.support.v7.widget.AppCompatTextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Nova Lista"
        android:layout_marginBottom="115dp"
        android:layout_gravity="bottom|end"
        android:layout_marginRight="90dp"
        android:id="@+id/txtNovaLista"
        android:fontFamily="sans-serif"
        android:background="@drawable/fab_shape_background"
        android:visibility="invisible"
        />

    <android.support.v7.widget.AppCompatTextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Listas"
        android:layout_marginBottom="192dp"
        android:layout_gravity="bottom|end"
        android:layout_marginRight="95dp"
        android:id="@+id/txtListas"
        android:fontFamily="sans-serif"
        android:background="@drawable/fab_shape_background"
        android:visibility="invisible"
        />

    <android.support.design.widget.FloatingActionButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_marginRight="@dimen/fab_margin_right"
        android:layout_marginBottom="180dp"
        android:src="@drawable/ic_shopping_basket"
        android:elevation="6dp"
        android:id="@+id/fab_shoppingcard"
        app:pressedTranslationZ="12dp"
        app:backgroundTint="@color/fab1_color"
        android:visibility="invisible"/>

    <android.support.v7.widget.ListViewCompat
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/lstPrincipal"
        android:divider="#ECECEC"
        android:dividerHeight="1sp"
        android:scrollbarStyle="outsideOverlay"
        android:scrollingCache="true"
        android:smoothScrollbar="true"
        >

    </android.support.v7.widget.ListViewCompat>


</android.support.design.widget.CoordinatorLayout>