re NestedScrollView

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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/content_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.example.dell.finalstartup.MainActivity"
    tools:showIn="@layout/app_bar_main">

    <ProgressBar
        android:id="@+id/progressBar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <!-- For pic of the day -->
            <ScrollView
                android:id="@+id/scrollView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

                <LinearLayout
                    android:orientation="vertical"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content">

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="Pic of the day example layout"
                        android:textSize="22sp" />

                    <ImageView
                        android:id="@+id/picOfTheDay"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content" />

                    <!-- Grey Line -->
                    <View
                        android:layout_width="match_parent"
                        android:layout_height="@dimen/gray_line_width"
                        android:background="#c0c0c0" />

                    <android.support.v4.widget.NestedScrollView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content">

                        <!-- For products -->

                        <ListView
                            android:id="@+id/list"
                            android:layout_width="fill_parent"
                            android:layout_height="wrap_content"
                            android:layout_below="@+id/scrollView" />

                    </android.support.v4.widget.NestedScrollView>

                </LinearLayout>

            </ScrollView>

        </LinearLayout>
    
</RelativeLayout>