Android Grid View space issue

in my project i'm using gridview and get images from database perfectly but it have some space line.

in my layout code :

            `  <GridView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scrollbars="none"
            android:id="@+id/listView"
            android:numColumns="3"
            android:horizontalSpacing="1dp" />

`

and it looks like this :

How can i fix this?