IOS 定位 单例

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+ (SCLocationController *)sharedController

{

     static
SCLocationController *sharedController = nil;

     static
dispatch_once_t onceToken;

     dispatch_once(&onceToken, ^{

        sharedController = [[self
alloc]init];

  });

  return
sharedController;

}

- (id)init

{

     self
= [super
init];

     if
(self) {

        _locationManager = [[CLLocationManager alloc]init];

        _locationManager.delegate = self;

        _locationManager.desiredAccuracy = kCLLocationAccuracyBest;

        _locationManager.distanceFilter = 30; // Meters.

  }

  return
self;

}

#pragma mark - Location Manager

#pragma mark - CLLocationManagerDelegate

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

{

    [_locManager stopUpdatingLocation];

    CLGeocoder *reverseGeocoder=[[CLGeocoder alloc]  init];

    [reverseGeocoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray
*array, NSError
*error)

     {

         CLPlacemark *placeMark = [array lastObject];

         if
(placeMark != nil)

         {

             state = [placeMark.addressDictionary objectForKey:@"State"]; 

             city = [placeMark.addressDictionary objectForKey:@"City"];                  

             subLocality = [placeMark.addressDictionary objectForKey:@"SubLocality"];

             if
(city.length >  0) {

                 NSLog(@"%@－%@-%@",state,city,subLocality);

             }

             else{

                 NSLog(@"%@－%@",state,subLocality);

             }

         }

     }];

}