Question

I use this code to get the longitude and latitude.

    (void)locationManager:(CLLocationManager *)manager
    didUpdateToLocation:(CLLocation *)newLocation
         fromLocation:(CLLocation *)oldLocation {
    NSLog(@"%f",newLocation.coordinate.latitude);
    self.location = newLocation;
}

But the longitude and latitude which i got has the excursion with the actual geographical position. How to solve this problem?

Answer 1

You should be testing the accuracy of the CLLocation object that is returned, and making sure it meets your location accuracy criteria.

if (newLocation.horizontalAccuracy > 1000) {
  // Throw away this location and wait for another one as this is over 1km away
}

Also, the locationManager:didUpdateToLocation:fromLocation: method has been deprecated in iOS6 so you should use locationManager:didUpdateLocations: if you’re targetting iOS6+.