The simplest way to add a pin on a map in iOS

Question

Suppose I have the code below to add a map on a view, what is the simplest way to add a pin on the location. Could someone advise the code snippet to add to my code?

Thanks

- (void)viewDidLoad
{
    MKMapView *map = [[MKMapView alloc] initWithFrame:CGRectMake(2, 2, 300, 300)];
    MKCoordinateRegion region = { {0.0, 0.0 }, { 0.0, 0.0 } };

    region.center.latitude = 22.278355;
    region.center.longitude = 114.181713;

    region.span.longitudeDelta = 0.01f;
    region.span.latitudeDelta = 0.01f;  

    [map setRegion:region animated:YES];
    [map regionThatFits:region];

    [self.view addSubview:map];
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
}

UPDATE:

xxx.h

#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>


@interface ShopDetail : UIViewController <MKMapViewDelegate> {

}

@end

xxx.m

- (void)viewDidLoad
{
    MKMapView *map = [[MKMapView alloc] initWithFrame:CGRectMake(2, 2, 300, 300)];
    MKCoordinateRegion region = { {0.0, 0.0 }, { 0.0, 0.0 } };

    region.center.latitude = 22.278355; //40.105085;
    region.center.longitude = 114.181713; //-83.005237;

    region.span.longitudeDelta = 0.01f;
    region.span.latitudeDelta = 0.01f;  

    [map setRegion:region animated:YES];
    [map regionThatFits:region];

    map.delegate = self;

    [self.view addSubview:map];

    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
}

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
    MKPinAnnotationView *pav = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:nil];

    NSLog(@"called viewForAnnotation");

    pav.pinColor = MKPinAnnotationColorGreen;
    return pav;
}

*NSLog(@"called viewForAnnotation"); has not been executing.

Update didn't seem to work for me, even though I just copied your code. Are you sure the delegate is firing the Annotation? — Elijah Murray, Jul 22 '13 at 17:51
You can find the method here : http://stackoverflow.com/questions/5182082/mkmapview-drop-a-pin-on-touch Cheers! — Bancha Rojkittisakul, Oct 04 '14 at 11:31

score 0 · Answer 1 · answered Oct 15 '11 at 05:14

0

Set the map's delegate.
Add an annotation to the map for the spot where you want a pin to appear.
Return an instance of MKPinAnnotationView when the map calls it's delegate's -mapView:viewForAnnotation: method for the annotation that you added in step 2.

answered Oct 15 '11 at 05:14

Caleb

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Please check UPDATE on my question, my pin is displayed on the map. – Charles Yeung Oct 15 '11 at 05:53

The simplest way to add a pin on a map in iOS

1 Answers1