Detect what route the user tap on map - ios

Question

I have a project where I show directions between current location and another location on a map (MapKit)
All works well. And I can get alternative routes.
request.requestsAlternateRoutes = YES;
But when the user tap on a route I show an annotation with distance and some other info. I want to pass this spesific route to another view. How can I achieve that? Like the original Map app on iOS. I can get different routes, and tap on a route to get direction details.
I have googled a lot, and the closest example is this:
[directions calculateDirectionsWithCompletionHandler:^(MKDirectionsResponse *response, NSError *error) {
// Now handle the result
if (error) {
NSLog(#"There was an error getting your directions");
return;
}
_currentRoute = [response.routes firstObject];
But _currentRoute is the first one. I want to let the user select currentRoute on tap on the map.

Answer 1

I figured it out. Not so elegant, but it does the job.
Make an ivar - NSMutableArray *routeArray in the header file.
I also have a MKMapView outlet in my header.
In my getDirections method, I tagged the MKMapView instance with a counter and added the route object to the routeArray.
When the delegate for making the Annotation is run, I can tag the anntotationView with the mapView.tag.
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
When I tap on the annotation:
(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
I pass the view.tag to my segue.
NSLog(#"Counter tag: %ld", (long)view.tag);
[self performSegueWithIdentifier:#"detaljer" sender:view];
I can then pass my selected route to my new view.
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
WeatherTableViewController *routeController =
[segue destinationViewController];
long row = [sender tag];
MKRoute *route = routeArray[row];
routeController.selectedRoute = route;
}