here is my code :
CLLocationCoordinate2D sourceCoords = CLLocationCoordinate2DMake(37.7833, -122.4167);//san fransisco
MKPlacemark *sourcePlacemark = [[MKPlacemark alloc] initWithCoordinate:sourceCoords addressDictionary:nil];
MKMapItem *source = [[MKMapItem alloc] initWithPlacemark:sourcePlacemark];
// Make the destination location
CLLocationCoordinate2D destinationCoords = CLLocationCoordinate2DMake(34.0500, -118.2500);//los angeles
MKPlacemark *destinationPlacemark = [[MKPlacemark alloc] initWithCoordinate:destinationCoords addressDictionary:nil];
MKMapItem *destination = [[MKMapItem alloc] initWithPlacemark:destinationPlacemark];
CLLocationCoordinate2D sourceCoords = CLLocationCoordinate2DMake(13.0441, +80.1831);
MKPlacemark *sourcePlacemark = [[MKPlacemark alloc] initWithCoordinate:sourceCoords addressDictionary:nil];
MKMapItem *source = [[MKMapItem alloc] initWithPlacemark:sourcePlacemark];
Make the destination location CLLocationCoordinate2D destinationCoords = CLLocationCoordinate2DMake(13.0545, +80.2114);
MKPlacemark *destinationPlacemark = [[MKPlacemark alloc] initWithCoordinate:destinationCoords addressDictionary:nil];
MKMapItem *destination = [[MKMapItem alloc] initWithPlacemark:destinationPlacemark];
polyline not showing in mapview .
Apple maps is not supporting Directions in india. you have to use Google Maps for Directions in india. you can check map feature availability here