IOS development-Map Display

(1) first, pull a mapview to your project.

(2) Add the following to your controller. h:

@interface EXViewController : UIViewController<MKMapViewDelegate,CLLocationManagerDelegate>{@private     MKMapView *_mapView;    CLLocationManager *_loactionManager;}@property(nonatomic, readwrite,retain) IBOutlet MKMapView *mapView;@property(nonatomic, readwrite, retain)CLLocationManager *locationManager;@end

Remember

IBOutlet

Must be added, and you need to connect mapview in your XIB to this attribute definition, otherwise it will be troublesome.
The implementation code in controller. m is as follows:

In the viewdidload function

- (void)viewDidLoad{    [super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.    self.mapView.delegate = self;    self.mapView.showsUserLocation = YES;    self.locationManager = [[[CLLocationManager alloc] init] autorelease];        [self.locationManager startUpdatingHeading];    [self.locationManager startUpdatingLocation];        //    }

And implement functions:

-(Mkannotationview *) mapview :( mkmapview *) mapview viewforannotation :( id <mkannotation>) Annotation

This function is used to display your map, and you can use the positioning symbol in it to locate your location.

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation{    MKPinAnnotationView *annView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:@"snda.pin"];    if (annView == NULL) {        annView = [[[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:@"snda.pin"] autorelease];            }        annView.annotation = annotation;    annView.canShowCallout = YES;    annView.calloutOffset = CGPointMake(0, 0);    annView.image = [UIImage imageNamed:@"capture-exposure-plus.png"];    annView.rightCalloutAccessoryView   = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];        return annView;}

And functions

-(Void) locationmanager :( cllocationmanager *) managerdidupdatetolocation :( cllocation *) newlocation fromlocation :( cllocation *) oldlocation {// get your precision and new address Continuously}