<RelativeLayout
        android:id="@+id/progress"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clickable="true"
        android:visibility="gone">

        <ProgressBar
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true" />

    </RelativeLayout>