I created a custom view by subclassing SearchView. How can I reference in it XML now?

I programmatically creating a custom view by extending the AppCompat SearchView. How do I reference this class in my XML? I cannot use the fully qualified name because I am using different product flavors with gradle that have different package names. Specifically, app:actionViewClass=".views.EventSearchView" causes a ClassNotFoundException

<menu xmlns:android="http://ift.tt/nIICcg"
    xmlns:app="http://ift.tt/GEGVYd"
    xmlns:tools="http://ift.tt/LrGmb4"
    tools:context=".activities.MainActivity">
    <item
        android:id="@+id/action_search"
        android:title="@string/action_search"
        android:icon="@drawable/ic_action_search"
        android:orderInCategory="99"
        app:showAsAction="ifRoom|collapseActionView"
        app:actionViewClass=".views.EventSearchView"
        />
    <item
        android:id="@+id/action_settings"
        android:title="@string/action_settings"
        android:orderInCategory="100"
        app:showAsAction="never" />
</menu>