limit scrolling and zooming Google Maps Android API v2

Question

I've added GroundOverlay to map and want to limit scrolling and zooming within this area.

How to limit scrolling within some bounds on android google maps?

Is it possible to get instantly motion points from MapFragment?

Please, help me.

Answer 1

Constraining the camera has (finally!) been added as a feature as part of the release of Google Play Services 9.4 -- you can call setLatLngBoundsForCameraTarget(LatLngBounds bounds) to set the allowed panning area.

// Create a LatLngBounds that includes the city of Adelaide in Australia.
final LatLngBounds ADELAIDE = new LatLngBounds(
    new LatLng(-35.0, 138.58), new LatLng(-34.9, 138.61));

// Constrain the camera target to the Adelaide bounds.
mMap.setLatLngBoundsForCameraTarget(ADELAIDE);

You can find a thorough explanation in the documentation: Restricting the user's panning to a given area and a sample activity in GitHub.