samples/Support4Demos/res/layout/wakeful_alarm_controller.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2013 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at

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     distributed under the License is distributed on an "AS IS" BASIS,
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical" android:padding="4dip"
        android:gravity="center_horizontal"
        android:layout_width="match_parent" android:layout_height="match_parent">

    <TextView
        android:layout_width="match_parent" android:layout_height="wrap_content"
        android:layout_weight="0" android:paddingBottom="4dip"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:text="@string/simple_wakeful_controller_msg"/>

    <Button android:id="@+id/schedule"
        android:layout_width="wrap_content" android:layout_height="wrap_content"
        android:text="@string/schedule_wakeful_alarm">
        <requestFocus />
    </Button>

</LinearLayout>