Centralizar um item em um Relative Layout

layout.xml

<RelativeLayout
android:id="@+id/rlBlock"
android:layout_width="match_parent"
android:layout_height="wrap_content"

android:background="@drawable/bg_item"
android:layout_gravity="center_vertical"
android:paddingTop="10dp"
android:gravity="center_horizontal">

    <TextView
       android:layout_width="200dp"
       android:layout_height="wrap_content"
       android:text="View all reviews"
       android:gravity="center_horizontal" />

</RelativeLayout>