UnityPlayer in an Android MapActivity

Hello UnityAnswers!

I'm building an Android app with Unity and a custom Activity. This Activity is already working well with a UnityPlayer and a CameraPreview. (The CameraPreview extends SurfaceView and implements SurfaceHolder.Callback and Camera.PreviewCallback to draw the camera view behind Unity.)

Now I want to do something similar with a MapView behind Unity. According to the Android docs, "A MapView can only be constructed (or inflated) by a MapActivity," so my plugin Activity is now a MapActivity. The trick here appears to be that the Activity's MapView must be an android.maps.MapView, so it can't also be a SurfaceView.

My question is, how can I get the effect of having Unity "punch through" the MapView as it does with the CameraPreview, while I can't make the MapView a SurfaceView as I have done with the CameraPreview? If the same technique can't be applied for a MapView, then is there some way to "scrape" the MapView and draw it onto a Plane in Unity?

Thank you in advance for any assistance!

Terrance Cohen, Ogmento, Inc.

Here's a bit of code for reference:

public class MyActivity extends MapActivity implements VideoUser { private CameraPreview cameraPreview; private UnityPlayer unityPlayer; MapView mapView; ...

class CameraPreview extends SurfaceView implements SurfaceHolder.Callback, Camera.PreviewCallback { SurfaceHolder surfaceHolder; Camera camera; VideoUser videoUser; ...