core/tests/coretests/res/layout/linear_layout_grid.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
/* //device/samples/SampleCode/res/layout/baseline_1.xml
**
** Copyright 2007, 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:id="@+id/layout"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout android:id="@+id/column1"
        android:layout_width="match_parent"
        android:layout_height="0sp"
        android:layout_weight="1"
        android:orientation="horizontal">

        <Button
            android:layout_width="0sp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="@string/keypad_one"/>

        <Button
            android:layout_width="0sp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="@string/keypad_two"/>

        <Button
            android:layout_width="0sp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="@string/keypad_three"/>
    </LinearLayout>

    <LinearLayout android:id="@+id/column2"
        android:layout_width="match_parent"
        android:layout_height="0sp"
        android:layout_weight="1"
        android:orientation="horizontal">

        <Button
            android:layout_width="0sp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="@string/keypad_four"/>

        <Button
            android:layout_width="0sp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="@string/keypad_five"/>

        <Button
            android:layout_width="0sp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="@string/keypad_six"/>
    </LinearLayout>

    <LinearLayout android:id="@+id/column3"
        android:layout_width="match_parent"
        android:layout_height="0sp"
        android:layout_weight="1"
        android:orientation="horizontal">

        <Button
            android:layout_width="0sp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="@string/keypad_seven"/>

        <Button
            android:layout_width="0sp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="@string/keypad_eight"/>

        <Button
            android:layout_width="0sp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="@string/keypad_nine"/>
    </LinearLayout>

</LinearLayout>