core/res/res/layout/recent_apps_dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
/*
** Copyright 2008, 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.
*/
-->

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">
    
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="3dip"
        android:orientation="vertical">
        
        <!-- This is only intended to be visible when all buttons (below) are invisible -->
        <TextView
            android:id="@+id/no_applications_message"
            android:layout_width="285dip"
            android:layout_height="wrap_content"
            android:layout_marginTop="15dip"
            android:layout_marginBottom="15dip"
            android:gravity="center"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="@android:string/no_recent_tasks" />
    
        <!-- The first row has a fixed-width because the UI spec requires the box
             to display with full-width no matter how many icons are visible, but to
             adjust height based on number of rows. -->
        <!-- TODO Adjust all sizes, padding, etc. to meet pixel-perfect specs -->
        <LinearLayout
            android:layout_width="285dip"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >

            <include
                layout="@android:layout/recent_apps_icon"
                android:id="@+id/button1" />
    
            <include
                layout="@android:layout/recent_apps_icon"
                android:id="@+id/button2" />
    
            <include
                layout="@android:layout/recent_apps_icon"
                android:id="@+id/button3" />
    
        </LinearLayout>
        
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
            
            <include
                layout="@android:layout/recent_apps_icon"
                android:id="@+id/button4" />
            
            <include
                layout="@android:layout/recent_apps_icon"
                android:id="@+id/button5" />
            
            <include
                layout="@android:layout/recent_apps_icon"
                android:id="@+id/button6" />
                
        </LinearLayout>    
    </LinearLayout>
</FrameLayout>