tests/res/layout-land/mediaplayer.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
 * Copyright (C) 2009 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:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <SurfaceView android:id="@+id/surface"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1">
    </SurfaceView>

    <SurfaceView android:id="@+id/surface2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1">
    </SurfaceView>

    <SurfaceView android:id="@+id/surface3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1">
    </SurfaceView>

</LinearLayout>