activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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">

    <com.simmorsal.library.ConcealerNestedScrollView
        android:id="@+id/concealerNSV"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

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

            <View
                android:background="#BDBDBD"
                android:layout_width="match_parent"
                android:layout_height="200dp"/>
            <View
                android:background="#9E9E9E"
                android:layout_width="match_parent"
                android:layout_height="200dp"/>
            <View
                android:background="#757575"
                android:layout_width="match_parent"
                android:layout_height="200dp"/>
            <View
                android:background="#BDBDBD"
                android:layout_width="match_parent"
                android:layout_height="200dp"/>
            <View
                android:background="#9E9E9E"
                android:layout_width="match_parent"
                android:layout_height="200dp"/>
            <View
                android:background="#757575"
                android:layout_width="match_parent"
                android:layout_height="200dp"/>
        </LinearLayout>
    </com.simmorsal.library.ConcealerNestedScrollView>

    <android.support.v7.widget.CardView
        android:id="@+id/crdHeaderView"
        android:layout_width="match_parent"
        android:layout_marginLeft="15dp"
        android:layout_marginRight="15dp"
        app:cardBackgroundColor="#C2185B"
        android:layout_height="100dp">

        <TextView
            android:text="This is a floating CardView on top"
            android:textColor="#fff"
            android:gravity="center"
            android:textSize="16sp"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
    </android.support.v7.widget.CardView>

    <LinearLayout
        android:id="@+id/linFooterView"
        android:background="#0097A7"
        android:layout_alignParentBottom="true"
        android:layout_width="match_parent"
        android:layout_height="70dp">

        <TextView
            android:text="This is a LinearLayout at the bottom"
            android:textSize="16dp"
            android:textColor="#fff"
            android:gravity="center"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
    </LinearLayout>
</RelativeLayout>