I'm having trouble in Xcode retrieving the user's location. I will post my code from my header and implementation file. My code is completely flawless and there are no compiler errors. in my main stroryboard i have a map view control, segmented control with the three buttons:Hybrid, Satellite, and Map. (they all work fine). On the same navigation bar. I have a button named getLocation but when I press it in the simulator my app crashes and i get The UIApplicationMain error.

import <UIKit/UIKit.h>

import <MapKit/MapKit.h>

@interface ViewController : UIViewController <MKMapViewDelegate> { MKMapView *mapView;

} @property (strong, nonatomic) IBOutlet MKMapView *mapView; -(IBAction)setMap:(id)sender;

-(IBAction)getLocation:(id)sender;

@end

and here is my implementation file.

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController @synthesize mapView;

-(IBAction)getLocation:(id)sender { mapView.showsUserLocation = YES; }

-(IBAction)setMap:(id)sender { switch (((UISegmentedControl *) sender) .selectedSegmentIndex) { case 0: mapView.mapType = MKMapTypeStandard; break; case 1: mapView.mapType = MKMapTypeSatellite; break; case 2: mapView.mapType = MKMapTypeHybrid; break; default: break; } }

• (void)viewDidLoad { [super viewDidLoad]; [self.mapView.delegate self]; [self.mapView setShowsUserLocation: YES]; // Do any additional setup after loading the view, typically from a nib. }

-(void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation{ CLLocationCoordinate2D loc = [userLocation coordinate];

MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(loc, 500, 500);
[self.mapView setRegion:region animated:YES];