packages/SystemUI/res/layout/system_bar_pocket_panel.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
/* apps/common/assets/default/default/skins/StatusBar.xml
**
** Copyright 2010, 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.
*/
-->

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    android:background="@*android:drawable/dialog_full_holo_dark"
    >
    <TextView
        android:id="@+id/description"
        android:textAppearance="@android:style/TextAppearance.Small"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:textStyle="bold"
        android:maxLines="1"
        android:layout_alignParentBottom="true"
        />

    <FrameLayout
        android:id="@+id/preview"
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:layout_above="@+id/description"
        android:descendantFocusability="blocksDescendants"
        >
        <ImageView
            android:id="@+id/icon"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerInside"
            android:visibility="gone"
            />
        <TextView
            android:id="@+id/alt"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:textAppearance="@android:style/TextAppearance.Large"
            android:gravity="center"
            android:visibility="gone"
            />
    </FrameLayout>
</RelativeLayout>