android layout for row used in speech bubble ListView

sms_row.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
 
    <TextView
        android:id="@+id/message_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="5sp"
        android:background="@drawable/speech_bubble_green"
        android:shadowColor="@color/textShadow"
        android:shadowDx="1"
        android:shadowDy="1"
        android:text="Medium Text"
        android:textColor="@color/textColor"
        android:textSize="20sp" />
 
</LinearLayout>