Converting Meaningful Addresses to Longitude and Latitude

This part of code is from Book , Vandad Nahavandipoor.


1. Declare a property of type CLGeocoder


     #import
     #import
     @interface
     Converting_Meaningful_Addresses_to_Longitude_and_LatitudeViewController : UIViewController
    @property (nonatomic, strong) CLGeocoder *myGeocoder;
    @end 


2. In view did load

• NSString *oreillyAddress =
  @"1005 Gravenstein Highway North, Sebastopol, CA 95472, USA";
  self.myGeocoder = [[CLGeocoder alloc] init];
  [self.myGeocoder
  geocodeAddressString:oreillyAddress completionHandler:^(NSArray *placemarks, NSError *error) {
  if ([placemarks count] > 0 && error == nil){
  
  NSLog(@"Found %lu placemark(s).", (unsigned long)[placemarks count]); CLPlacemark *firstPlacemark = [placemarks objectAtIndex:0];
  NSLog(@"Longitude = %f", firstPlacemark.location.coordinate.longitude);
  NSLog(@"Latitude = %f", firstPlacemark.location.coordinate.latitude); 
  }
  else if ([placemarks count] == 0 &&
  error == nil){ NSLog(@"Found no placemarks.");
  }
  else if (error != nil){
  NSLog(@"An error occurred = %@", error); }
  }];