<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
    <LinearLayout
        <!--Giving the Header a reference ID-->
        android:id="@+id/header"
        android:layout_width="fill_parent"
        android:layout_height="20dp"
        android:layout_alignParentTop="true"
        android:background="#000000" >
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:textSize="15sp"
            android:textColor="#ffffff"
            android:text="My header" />
    </LinearLayout>

    <ScrollView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        <!--Here, we tell it to place the top edge of the ScrollView
        below the bottom edge of the header-->
        android:layout_below="@id/header"
        <!--Here, we tell it to place the bottom edge of the ScrollView
        above the top edge of the footer-->
        android:layout_above="@id/footer"
        android:layout_weight="1"
        android:gravity="bottom"
        android:background="#894545">
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" />
    </ScrollView>

    <LinearLayout
        <!--Here, we give the footer a reference ID-->
        android:id="@+id/footer"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:padding="2dp"
        android:layout_alignParentBottom="true"
        android:isScrollContainer="true"
        android:background="@drawable/steel" >
        <EditText
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="0.2"
            android:scrollbars="vertical"
            android:fadingEdge="vertical"
            android:maxHeight="40dp"
            android:textSize="15sp" />
        <Button
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="0.8"
            android:layout_gravity="right"
            android:text="Send"
            android:textStyle="bold"
            android:textSize="15sp" />
    </LinearLayout>
</RelativeLayout>