Quickly adding single pin to MKMapView?

Question

I have a GPS coordinate (latitude, longitude) and I quickly want to place a single pin on a MKMapView showing that position. Everything works just fine, but as I only need a single pin with no callout is there a quicker way to do this or is what I have below what needs to be done?

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id < MKAnnotation >)annotation {
    MKPinAnnotationView *pinView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"DETAILPIN_ID"];
    [pinView setAnimatesDrop:YES];
    [pinView setCanShowCallout:NO];
    return pinView;
}

NB: I don't need to check for reusable annotation views as I am only using the pin to show a position in a detail view (which is destroyed and recreated the next time a detail view is requested).

Solution 1

Instead of using the -mapView:viewForAnnotation: method, just put the code for an MKPointAnnotation into your -viewDidLoad method. It won't animate the drop, but it is very easy.

// Place a single pin
MKPointAnnotation *annotation = [[MKPointAnnotation alloc] init];
[annotation setCoordinate:centerCoordinate];
[annotation setTitle:@"Title"]; //You can set the subtitle too
[self.mapView addAnnotation:annotation];

Swift version:

let annotation = MKPointAnnotation()
let centerCoordinate = CLLocationCoordinate2D(latitude: 41, longitude:29)
annotation.coordinate = centerCoordinate
annotation.title = "Title"
mapView.addAnnotation(annotation)

Solution 2

You can set the point and also the region like this:

CLLocationCoordinate2D coord = CLLocationCoordinate2DMake(lat, lon);

MKCoordinateSpan span = MKCoordinateSpanMake(0.1, 0.1);
MKCoordinateRegion region = {coord, span};

MKPointAnnotation *annotation = [[MKPointAnnotation alloc] init];
[annotation setCoordinate:coord];

[self.staticMapView setRegion:region];
[self.staticMapView addAnnotation:annotation];

Solution 3

Simply you can add it like:

    mapView.mapType = MKMapType.standard

    let location = CLLocationCoordinate2D(latitude: 23.0225,longitude: 72.5714)

    let span = MKCoordinateSpanMake(0.05, 0.05)
    let region = MKCoordinateRegion(center: location, span: span)
    mapView.setRegion(region, animated: true)

    let annotation = MKPointAnnotation()
    annotation.coordinate = location
    annotation.title = "Javed Multani"
    annotation.subtitle = "Surat, India"
    mapView.addAnnotation(annotation)

It looks like:

Solution 4

Swift version of add pin in MKMapView:

func addPin() {
    let annotation = MKPointAnnotation()
    let centerCoordinate = CLLocationCoordinate2D(latitude: 20.836864, longitude:-156.874269)
    annotation.coordinate = centerCoordinate
    annotation.title = "Lanai, Hawaii"
    mapView.addAnnotation(annotation)
}

Swift version of focusing a region or pin

func focusMapView() {
    let mapCenter = CLLocationCoordinate2DMake(20.836864, -156.874269)
    let span = MKCoordinateSpanMake(0.1, 0.1)
    let region = MKCoordinateRegionMake(mapCenter, span)
    mapView.region = region
}

To learn more details visit "Load MKMapView using Swift".

Solution 5

The easiest and simplest method to drop a pin and displaying Current Location in Map View is to simply add this code in your viewDidLoad method. (Assuming that user's current location is already fetched by you).

NSString *display_coordinates=[NSString stringWithFormat:@"Latitude is %f and Longitude is %f",coordinate.longitude,coordinate.latitude];

MKPointAnnotation *annotation = [[MKPointAnnotation alloc] init];
[annotation setCoordinate:coordinate];
[annotation setTitle:@"Click Labs"];            
[annotation setSubtitle:display_coordinates];
[mapView addAnnotation:annotation];

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