I have a widget that acts as a launcher on the home screen. How can I make it behave like a launcher icon?

I use this layout for portrait:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">

  <RelativeLayout
    android:background="@drawable/widget_background_selector"
    android:focusable="true"
    android:layout_width="74dip"
    android:layout_height="79dip"
    android:layout_marginLeft="3dip"
    android:layout_marginTop="14dip">

    <ImageView android:id="@android:id/background"
      android:layout_width="72dip"
      android:layout_height="72dip"
      android:layout_marginLeft="1dip"
      android:layout_marginTop="4dip" />

  </RelativeLayout>

</RelativeLayout>

And this is the background selector:

<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
  <item android:state_pressed="true" android:drawable="@drawable/widget_background_pressed" /> 
  <item android:state_window_focused="true" android:state_focused="true" android:drawable="@drawable/widget_background_focused" /> 
  <item android:state_window_focused="false" android:state_focused="true" android:drawable="@android:color/transparent" /> 
</selector>

This way if I use the DPAD the widget is focusable but the click doesn't work. The touch still works but the widget is not displayed as focused.

Any idea what I do wrong?