Question

Hello I am using CoreLocation to get latitude and longitude in my map application to get latitude and longitude by using following method

- (void)viewDidLoad {
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.distanceFilter = kCLDistanceFilterNone; // whenever we move
locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters; // 100 m
[locationManager startUpdatingLocation];
    [super viewDidLoad];
   }

The _ (void)locationManager…. method is not getting call

 - (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
       fromLocation:(CLLocation *)oldLocation
  {
int degrees = newLocation.coordinate.latitude;
double decimal = fabs(newLocation.coordinate.latitude - degrees);
int minutes = decimal * 60;
double seconds = decimal * 3600 - minutes * 60;
NSString *lat = [NSString stringWithFormat:@"%d° %d' %1.4f\"", 
                 degrees, minutes, seconds];

degrees = newLocation.coordinate.longitude;
decimal = fabs(newLocation.coordinate.longitude - degrees);
minutes = decimal * 60;
seconds = decimal * 3600 - minutes * 60;
NSString *longt = [NSString stringWithFormat:@"%d° %d' %1.4f\"", 
                   degrees, minutes, seconds];

   }

I want to call lati & longi on Button click event to URL. But it is not working. it passes 0000.0 lati & longi to my url. Can some one tell me how to rectify this code

Answer 1

I have did this to pass latitude and longitude in to web service URL on button click…

- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
       fromLocation:(CLLocation *)oldLocation
  {

    if((fabs(newLocation.coordinate.latitude) > 0.001) ||    (fabs(newLocation.coordinate.longitude) > 0.001)) {
    NSLog(@"Got location %f,%f", newLocation.coordinate.latitude,   newLocation.coordinate.longitude);
    if (currentLocation != nil) {
        [currentLocation release];
    }
    currentLocation = newLocation;
    [currentLocation retain];
}}

and On click event code I have just pass locationmanager.location.coordinate.latitude…..

NSString *url = [NSString stringWithFormat:@"http://.....Url..../hespdirectory/phpsqlsearch_genxml.php?lat=%f&lng=%f&radius=%f",locationManager.location.coordinate.latitude,locationManager.location.coordinate.longitude,radius];