How can we draw the routes between two locations in MapView using the iOS 4.0? Can some one shed light on it?
I found that using the MKOverlayPathView and MKPolyLine and MKPolyLineView we can draw routes in Mapview.
Find a path finding algorithm that works for you. The A-star algorithm is probably a good one to recommend for this purpose.
来源：https://stackoverflow.com/questions/3421051/how-to-draw-route-between-two-locations-in-iphone