MapView not Showing annotation - mapkit

Question

My MapView doesn't show annotations, following is my code. I am new to objective-c. Can someone figure out whats wrong with this code. I want to show user location with blue circle and another location with a red pin.
#import <UIKit/UIKit.h>
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <CoreLocation/CoreLocation.h>
#interface MapViewController : UIViewController <UIApplicationDelegate,CLLocationManagerDelegate,MKMapViewDelegate,UITextFieldDelegate>{
CLLocationManager *locationManager;
IBOutlet MKMapView *mapView;
}
#property (strong, nonatomic) UIWindow *window;
#property (nonatomic,retain) IBOutlet MKMapView *mapView;
#end
#import "MapViewController.h"
#implementation MapViewController
#synthesize mapView;
- (void)viewDidLoad
{
[super viewDidLoad];
self.mapView.delegate = self;
locationManager = [[CLLocationManager alloc] init];
[locationManager setDelegate:self];
[locationManager setDistanceFilter:kCLDistanceFilterNone];
[locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
[self.mapView setShowsUserLocation:YES]
[self.window makeKeyAndVisible];
CLLocationCoordinate2D annotationCoord;
annotationCoord.latitude = -37.5498;
annotationCoord.longitude = -143.869;
MKPointAnnotation *annotationPoint = [[MKPointAnnotation alloc] init];
annotationPoint.coordinate = annotationCoord;
annotationPoint.title = #"BlackHill PS";
[mapView addAnnotation:annotationPoint];
}
#end

Answer 1

You are adding the annotation to the map, but you are not doing anything to make sure that the region displayed by the map is a region that includes the place marked by the annotation. Do that.
Example:
MKCoordinateRegion reg =
MKCoordinateRegionMakeWithDistance(annotationPoint.coordinate, 600, 600);
mapView.region = reg;
By the way, all that stuff with the location manager is a complete waste as far as your code is concerned. If the map is asked to show the user's location, it will do it. Your location manager is not doing anything in the story (as far as the code you've actually shown is concerned). It isn't even running (doing updates). It's pointless.