tests/ActivityViewTest/res/layout/activity_view_main_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2018 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

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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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <Button
        android:id="@+id/activity_view_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Test ActivityView"
        android:textAllCaps="false"/>

    <Button
        android:id="@+id/scroll_activity_view_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Test Scroll ActivityView"
        android:textAllCaps="false"/>

    <Button
        android:id="@+id/resize_activity_view_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Test Resize ActivityView"
        android:textAllCaps="false"/>

</LinearLayout>