MkMapView : Get lattitude and longitude when user moves the map - objective-c

Question

i'am new to iphone MapView,when user moves the Map i need to get latitude and longitude of the visible region in iphone

Answer 1

You can get the coordinates of the point at the center of the map with the properties of the MKMapView :
centerCoordinate.latitude and centerCoordinate.longitude.
For example :
CLLocationCoordinate2D coord = CLLocationCoordinate2DMake(
map.centerCoordinate.latitude, map.centerCoordinate.longitude);
That's theses latitude and longitude you mean by "i need latitude and longitude when user moves map" ?
Hope this helps…

Answer 2

Use the .region property of your MKMapView.
MKMapView *myMapView = [[MKMapView alloc] initWithFrame:...];
MKCoordinateRegion region = myMapView.region;
// Center of the screen as lat/long
// region.center.latitude
// region.center.longitude
// width and height of viewing area as lat/long
// region.span.latitudeDelta
// region.span.longitudeDelta
Max

Answer 3

Add this in your Appdelegate.h
CLLocationManager *locationManager;
and then add these lines in your Appdelegate.m (didFinishLaunchingWithOptions)
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startMonitoringSignificantLocationChanges];
[locationManager startUpdatingLocation];
this will call a method when you move with device,
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
CLLocation *currentLocation = [locations lastObject];
NSString *latitude = [NSString stringWithFormat:#"%g", currentLocation.coordinate.latitude];
NSString *longitude = [NSString stringWithFormat:#"%g", currentLocation.coordinate.longitude];
NSMutableArray *temp = [[NSMutableArray alloc] initWithCapacity:0];
[temp addObject:latitude];
[temp addObject:longitude];
NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
[def setObject:temp forKey:#"CLocation"];
[temp release];
}
Use from this.