packages/Keyguard/test/res/layout/keyguard_test_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
**
** Copyright 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
**
**     http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
-->

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center">

    <Button android:id="@+id/do_keyguard"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/do_keyguard" />

    <Button android:id="@+id/on_screen_turned_off"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/on_screen_turned_off" />

    <Button android:id="@+id/on_screen_turned_on"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/on_screen_turned_on" />

    <Button android:id="@+id/verify_unlock"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/verify_unlock" />

</LinearLayout>