How to display user location in mapkit?

Question

I'd like to display the blue pulsing dot for a user's location. I'm doing this:

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation    *)newLocation fromLocation:(CLLocation *)oldLocation{
//some other stuff here
[self.mapView setShowsUserLocation:YES];
}

But I eventually get

-[MKUserLocation establishment]: unrecognized selector sent to instance 0x125e90

Should I be doing this some other way?

-- EDIT --

I'm also doing this, which is where I eventually get the above exception:

- (MKAnnotationView *) mapView:(MKMapView *)_mapView viewForAnnotation:(AddressNote *) annotation{

if(annotation.establishment != nil){
//do something}

establishment is a custom class I have on AddressNote. When establishment has a value, the exception occurs. If I don't set ShowsUserLocation, everything works fine but of course, I don't see the user location.

Answer 1

Not sure what the actual problem is, but you don't need to do this on every update. Set it once after creating the mapView, and you should be in business.

mapView.showsUserLocation = YES;

You might need to zoom the map to the region where the user actually is, for the dot to be visible.