res/layout/pictureoverview.xml

<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/gridview"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"
    android:columnWidth="90dp"
    android:numColumns="auto_fit"
    android:verticalSpacing="10dp"
    android:horizontalSpacing="10dp"
    android:stretchMode="columnWidth"
    android:gravity="center"
/>
1	<?xml version="1.0" encoding="utf-8"?>
2	<GridView xmlns:android="http://schemas.android.com/apk/res/android"
3	android:id="@+id/gridview"
4	android:layout_width="fill_parent"
5	android:layout_height="fill_parent"
6	android:columnWidth="90dp"
7	android:numColumns="auto_fit"
8	android:verticalSpacing="10dp"
9	android:horizontalSpacing="10dp"
10	android:stretchMode="columnWidth"
11	android:gravity="center"
12	/>