Reverse GeoCoding in iOS

#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>

@interface NearByViewController : UIViewController <CLLocationManagerDelegate>


@property (weak, nonatomic) IBOutlet UILabel *latLbl;
@property (weak, nonatomic) IBOutlet UILabel *lngLbl;
@property (weak, nonatomic) IBOutlet UILabel *addressLbl;


@end




//-------------------------------------------------------



#import "NearByViewController.h"


@interface NearByViewController () {
  CLLocationManager *locationManager;
}

@end

@implementation NearByViewController


-(void)initializeLocationManager {
  locationManager = [[CLLocationManager alloc] init];
  [locationManager setDelegate:self];
  [locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
  [locationManager setDistanceFilter:100];
  [locationManager startUpdatingLocation];
 
  if([locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]){
    [locationManager requestWhenInUseAuthorization]; // Add This Line
  }
 
  NSLog(@"Location Manager is initialised");
}


- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
 
  [self initializeLocationManager];
}





#pragma mark - LocationManager Delegate

- (void)locationManager:(CLLocationManager *)manager
     didUpdateLocations:(NSArray *)locations {
 
  /*
   if(currentLocation.latitude == 0.0 && currentLocation.longitude == 0.0) {
   currentLocation = manager.location.coordinate;
   NSLog(@"Latitude : %.2f, Longitude : %.2f", currentLocation.latitude, currentLocation.longitude);
  
   }
   */
 
 
  NSLog(@"Location manager didupdate in NearByViewController");
 
  CLLocation *currentLocation =    manager.location;
 
//  NSLog(@"Current Location 11 : %f , %f", currentLocation.coordinate.latitude, currentLocation.coordinate.longitude);
 
 
  self.latLbl.text = [NSString stringWithFormat:@"%0.3f", currentLocation.coordinate.latitude];
  self.lngLbl.text = [NSString stringWithFormat:@"%0.3f", currentLocation.coordinate.longitude];
 
 
//  currentLocation = [locations lastObject];
//  NSLog(@"Current Location 22 : %f , %f", currentLocation.coordinate.latitude, currentLocation.coordinate.longitude);

 
 
 
  [locationManager stopUpdatingLocation];
 
  CLGeocoder * geoCoder = [[CLGeocoder alloc] init];
  [geoCoder reverseGeocodeLocation:[locations objectAtIndex:0] completionHandler:^(NSArray *placemarks, NSError *error) {
   
   
   
    CLPlacemark *placemark = [placemarks objectAtIndex:0];
   
    /*
    isoCountryCode.text      = placemark.ISOcountryCode;
    country.text          = placemark.country;
    postalCode.text          = placemark.postalCode;
    adminArea.text          = placemark.administrativeArea;
    subAdminArea.text      = placemark.subAdministrativeArea;
    locality.text          = placemark.locality;
    subLocality.text      = placemark.subLocality;
    thoroughfare.text      = placemark.thoroughfare;
    subThoroughfare.text  = placemark.subThoroughfare;
    */
   
    NSString *address = [NSString stringWithFormat:@"%@\n%@ %@\n%@\n%@",
                         placemark.thoroughfare,
                         placemark.postalCode, placemark.locality,
                         placemark.administrativeArea,
                         placemark.country];
   
    NSLog(@"Address : %@", address);
   
    self.addressLbl.text = address;
   
  }];
 
   
}


- (void)locationManager:(CLLocationManager *)manager
       didFailWithError:(NSError *)error {
  NSLog(@"Location Manager did fail : %@", [error localizedDescription]);
}


#pragma mark -


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


@end