<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Button android:text="@string/firststring"
            android:id="@+id/button1"
            android:layout_width="@dimen/testdimen"
            android:layout_height="wrap_content">
    </Button>

    <include layout="@layout/testlayout" android:layout_width="wrap_content" android:layout_height="wrap_content"/>

</LinearLayout>