<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"
  xmlns:android="http://schemas.android.com/apk/res/android">
    <GridView android:gravity="center" android:id="@id/gridv" android:layout_width="fill_parent" android:layout_height="fill_parent" android:listSelector="#33000000" android:numColumns="3" />
</LinearLayout>