lint/cli/src/test/java/com/android/tools/lint/checks/data/res/layout/wrong_namespace4.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- This file does *not* have a wrong namespace: it's testdata to make sure we don't complain when "a" is defined for something unrelated -->
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:a="http://something/very/different"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <include
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        layout="@layout/layout2" />

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

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button" />

</LinearLayout>