longitude/latitude values are not correct - ios

Question

i try to catch the longitude and latitude values and to display them in the console (NSLog) for the moment, i have puted the correspondant code in the viewWillAppear method, any way, it's not a big deal, my problem is when i show the view the first time, my console show me that:
latitude: 0.000000
longitude:0.000000
and the second time it shows me that :
latitude : 134217731.444448
longitude : 0.700000
the third time :
latitude : 134217731.444448
longitude : 0.700000
the n time :
latitude : 134217731.444448
longitude : 0.700000
this my code in the viewWillAppear (i'm sure it's logic is pretty right and i'm waiting for your clarification):
-(void)viewWillAppear:(BOOL)animated
{
// locationManager update as location
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
locationManager.distanceFilter = kCLDistanceFilterNone;
[locationManager startUpdatingLocation];
CLLocation *location = [locationManager location];
// Configure the new event with information from the location
CLLocationCoordinate2D coordinate = [location coordinate];
NSString *latitude = [NSString stringWithFormat:#"%f", coordinate.latitude];
NSString *longitude = [NSString stringWithFormat:#"%f", coordinate.longitude];
NSLog(#"Latitude : %#", latitude);
NSLog(#"Longitude : %#",longitude);
}
note that i work on the iPhone simulator, thx for help :)))

Answer 1

You shouldn't check coordinate here.
Implement locationManager:didUpdateToLocation:fromLocation: method in the same class and check the location inside this method:
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
CLLocationCoordinate2D coordinate = [newLocation coordinate];
NSString *latitude = [NSString stringWithFormat:#"%f", coordinate.latitude];
NSString *longitude = [NSString stringWithFormat:#"%f", coordinate.longitude];
NSLog(#"Latitude : %#", latitude);
NSLog(#"Longitude : %#",longitude);
}
Your current class should implement CLLocationManagerDelegate protocol, i.e. it should be a delegate of location manager.