Question

I am a beginner in Objective C. I am setting a Mapview after selecting a TableRow inside a Navigation controller. I am getting this error which terminates the application.

-[UIView setRegion:animated:]: unrecognized selector sent to instance 0x806b2c0

This is my viewWillAppeer for Mapview

- (void)viewWillAppear:(BOOL)animated {

    CLLocationCoordinate2D zoomLocation;
    zoomLocation.latitude = 39.281516;
    zoomLocation.longitude= -76.580806;

    if (CLLocationCoordinate2DIsValid(location)) {
        MKCoordinateRegion mapRegion = MKCoordinateRegionMakeWithDistance(zoomLocation, 0.5*METERS_PER_MILE, 0.5*METERS_PER_MILE);

        [_mapView setRegion:mapRegion animated:YES];
    } else {
        NSLog(@"Invalid coordinates");
    }
}

Header file for this imports mapkit and corelocation and has this property.

@property (weak, nonatomic) IBOutlet MKMapView *mapView;

Header file includes mapkit and coreelocation and making this property strong also didn’t changed anything.

Answer 1

This happened because I previously hooked an outlet on my LocateItemViewController (the controller having map view) named “mapView” and never deleted it from “Connections Inspector”.

see the greyed outlet named “view” under Outlets section, I had a similar one named mapView