How to set Gravity of Gridview?

How to set gravity of gridview, i used the following code for that but this code is not working.

<LinearLayout 
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" 
    android:layout_weight="1"
    android:orientation="horizontal" 
    android:gravity="center"
    android:layout_gravity="center_horizontal">
    <GridView 
         android:id="@+id/grdviewmainmenu" 
         android:layout_gravity="center"
         android:layout_width="wrap_content" 
         android:layout_height="wrap_content"
         android:verticalSpacing="10dip"
         android:horizontalSpacing="17dip" 
         android:numColumns="auto_fit"
         android:columnWidth="80dip" 
         android:stretchMode="spacingWidth"
         android:gravity="center" />开发者_StackOverflow中文版;
</LinearLayout>

Maybe changing android:gravity="center" to android:layout_gravity="center" will do the job? Actually, what do you mean by "this code is not working"?

u use android:layout_gravity="center"

Use RelativeLayout instead of LinearLayout as a parent. will perfectly work...