How to give a location coordinate to plot a point in a map in ios using storyboard?

Question

I am creating a map view in a view controller, using storyboard.

When I use the following code.

-(void) mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
    CLLocationDistance distance = 1000;   
    MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(userLocation.coordinate,
                               distance, 
                               distance);
    MKCoordinateRegion adjusted_region = [self.mapView regionThatFits:region];
    [self.mapView setRegion:adjusted_region animated:YES];
}

A point is plotted in San Francisco, CA, United States. The userLocation coordinates are the predefined value in MapKit.h framework. Now I create a

-(void) mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
    CLLocationDistance distance = 1000;
    CLLocationCoordinate2D myCoordinate;
    myCoordinate.latitude = 13.04016;
    myCoordinate.longitude = 80.243044;
    MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(myCoordinate, 
                                                                   distance, 
                                                                   distance);
    MKCoordinateRegion adjusted_region = [self.mapView regionThatFits:region];
    [self.mapView setRegion:adjusted_region animated:YES];
}

Here, the region is displayed having the coordinate in the center. But, no point is plotted at the coordinate position.

How to plot a point or annotation in that coordinate location?

Solution

Try this code inside of didUpdateUserLocation method

    MKPointAnnotation*    annotation = [[MKPointAnnotation alloc] init];
    CLLocationCoordinate2D myCoordinate;
    myCoordinate.latitude=13.04016;
    myCoordinate.longitude=80.243044;
    annotation.coordinate = myCoordinate;
    [self.mapView addAnnotation:annotation];

Comments

[chandru]

Three errors are displayed, use of undeclared identifier "Annotation".

[iGagan Kumar]

Its MKAnnotation not Annotation

[Sukesh]

THE_SPAN 0.01f In the place of latitude and longitude give your value...

[chandru]

Ya,thank u, this works perfect, can we use any icons(own Pictures) other than annotation.

[Bhumeshwer katre]

You can use -(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {} this method to customize annotation.

[chandru]

No, it is not working, any way thank u, but the first answer worked.

[chandru]

Wat is that above comment

[Sukesh]

In the above coding in the place of THE_SPAN give value 0.01f,and in the place of latitude and longitude give your latitude and longitude values..

[Bhumeshwer katre]

You can get idea through this link blog.asolutions.com/2010/09/…

[chandru]

k, wat is that MapViewC

[Sukesh]

you would have declared the map view in .h file. Use the same name here and try.

[chandru]

Ya, thank u, can we plot our own pictures instead of annotation

[Sukesh]

check it here stackoverflow.com/questions/9814988/…