samples/BusinessCard/res/layout/business_card.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <Button
        android:id="@+id/pick_contact_button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_margin="10dip"
        android:text="@string/button_pick_contact"/>
    <TextView
        android:id="@+id/display_name_text_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:textAppearance="?android:attr/textAppearanceLarge"/>
    <TextView
        android:id="@+id/phone_number_text_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/display_name_text_view"
        android:layout_centerHorizontal="true"
        android:textAppearance="?android:attr/textAppearanceMedium"/>
</RelativeLayout>