Merhaba ozan,
Gridview da horiontal scrollbar istiyosan şu şekilde eklemelisin..
<HorizontalScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@+id/zoomControls1"
android:layout_below="@+id/listeleBtn" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="306dp"
android:layout_height="wrap_content"
android:text="" />
<GridView
android:id="@+id/gridView"
android:layout_width="1000dp"
android:layout_height="fill_parent"
android:fastScrollEnabled="true"
android:gravity="center"
android:horizontalSpacing="10dp"
android:listSelector="@android:color/white"
android:numColumns="5"
android:stretchMode="columnWidth"
/>
</LinearLayout>
</HorizontalScrollView>
iyi çalışmalar..