title: MapKit: trace route
body: <p>I have a MapKit with current location and one MkPointAnnotation. I need to trace route between these points.</p>
  
  <pre><code>- (void)viewDidLoad
  {
      [super viewDidLoad];
  
      //esconder navBar
      [[self navigationController] setNavigationBarHidden:YES animated:NO];
  
      mapView.showsUserLocation = YES;
      UIBarButtonItem *zoomButton = [[UIBarButtonItem alloc] 
                                     initWithTitle: @"Onde Estou?"
                                     style:UIBarButtonItemStylePlain
                                     target: self
                                     action:@selector(zoomIn:)];
  
      self.navigationItem.rightBarButtonItem = zoomButton;
  
      UIBarButtonItem *typeButton = [[UIBarButtonItem alloc] 
                                     initWithTitle: @"Tipo"
                                     style:UIBarButtonItemStylePlain
                                     target: self
                                     action:@selector(changeMapType:)];
  
      self.navigationItem.leftBarButtonItem = typeButton;
  
      double lat = -21.21258;
      double lng = -47.816802;
  
      CLLocationCoordinate2D Coordinate;
  
      Coordinate.latitude = lat;
      Coordinate.longitude = lng;
  
      MKPointAnnotation *annotationPoint = [[MKPointAnnotation alloc] init];
      annotationPoint.coordinate = Coordinate;
      annotationPoint.title = @"Ribeirão Shopping";
      annotationPoint.subtitle = @"Ribeirão Preto - SP";
      [self.mapView addAnnotation:annotationPoint]; 
  
      MKCoordinateRegion newRegion;
      newRegion.center.latitude = lat;
      newRegion.center.longitude = lng;
      [self.mapView setRegion:newRegion animated:YES];
  
      mapView.mapType = MKMapTypeStandard;
  
  
  }
  </code></pre>