Android : Android Swap Views

I have 4 android custom views XML and I want to shuffle them at runtime.

<RelativeLayout>
    <LinearLayout>
        <LinearLayout>
            <CustomView /> <!-- shuffle these -->
            <CustomView /> <!-- shuffle these -->
        </LinearLayout>
        <LinearLayout>
            <CustomView /> <!-- shuffle these -->
            <CustomView /> <!-- shuffle these -->
        </LinearLayout>
    </LinearLayout>
</RelativeLayout>

I can't/don't want to recreate the views as I have a reference to each of these somewhere which I use for something else.