mapkit layer modification on iphone 4

is there any way to load own map on mapkit using some layer modification and instead of Google I show my own map with compass ef开发者_如何学Pythonfect on rotation?

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You can add custom layers to a MKMapView easily with MKOverlay and related classes. You could use a polygon, an image, or dynamically draw on demand.

You define a region using the MKOverlay protocol, and use a MKOverlayView to perform the actual rendering.

• MKOverlay Reference
• MKOverlayView Reference

This is described in some detail in the developer documentation on Location Awareness, in the section Drawing Overlays on a Map.