GPS and draw MapRout in iphone

I have a latitude and longitude that is fixed, so I used that and got the point in mapview with pin. Now I want the current location and draw route, so I think using gps I get the latitude and longitude. Using this location(latitude & longitude) I have to draw a route with my fixed value (latitude & longitude). How is it possible..? Is this is the right way to do it? ?How to draw the route with two point..?

I have used the delegate method but it doesn't call,

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation

           fromLocation:(CLLocation *)oldLocation

{

    [manager stopUpdatingHeading];



    NSLog(@"latitude=%f",newLocation.coordinate.latitude);



     NSLog(@"longitude=%f",newLocation.coordinate.longitude);

}