gridview layout

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <RelativeLayout android:layout_width="fill_parent"
        android:layout_height="450dp"
        android:background="#424242">

        <GridView
            android:id="@+id/taukytab_grid"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:numColumns="3" >
        </GridView>

    </RelativeLayout>

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="50dp"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:background="@drawable/app_bottom_bar" >

        <Button
            android:id="@+id/multiselect_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_alignParentTop="true"
            android:background="@drawable/black_button"
            android:text="Multi-select" />

        <Button
            android:id="@+id/delete_select_taukky_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:background="@drawable/black_button"
            android:text="Delete" />

        <Button
            android:id="@+id/share_select_tuaky_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:layout_marginLeft="8dp"
            android:layout_toRightOf="@+id/delete_select_taukky_button"
            android:background="@drawable/black_button"
            android:text="Share" />

    </RelativeLayout>

</RelativeLayout>