从iOS获取反向地理编码当前位置的最简单方法

Question

我在这里看到另一个问题:确定iPhone用户的国家/地区可以获得iPhone用户所在的当前国家/地区.

这对于许多用途来说非常方便.但是,是否可以更深入地推断iOS(如果有信息)用户所处的州或城市？

如果事情不可能的话,我认为反向地理编码服务将是下一步.有没有可以为您的应用程序雇用的反向地理编码服务？

Answer 1

MKReverseGeocoder 在iOS 5中已弃用,现在已经过时了 CLGeocoder

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation {
   [self.locationManager stopUpdatingLocation];

   CLGeocoder * geoCoder = [[CLGeocoder alloc] init];
   [geoCoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray *placemarks, NSError *error) {
       for (CLPlacemark * placemark in placemarks) {
           .... = [placemark locality];
        }    
    }];
}

Answer 2

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

CLLocation *newLocation = [[CLLocation alloc]initWithLatitude:21.1700
                                                    longitude:72.8300];

[geocoder reverseGeocodeLocation:newLocation
               completionHandler:^(NSArray *placemarks, NSError *error) {

                   if (error) {
                       NSLog(@"Geocode failed with error: %@", error);
                       return;
                   }

                   if (placemarks && placemarks.count > 0)
                   {
                       CLPlacemark *placemark = placemarks[0];

                       NSDictionary *addressDictionary =
                       placemark.addressDictionary;

                       NSLog(@"%@ ", addressDictionary);
                       NSString *address = [addressDictionary
                                            objectForKey:(NSString *)kABPersonAddressStreetKey];
                       NSString *city = [addressDictionary
                                         objectForKey:(NSString *)kABPersonAddressCityKey];
                       NSString *state = [addressDictionary
                                          objectForKey:(NSString *)kABPersonAddressStateKey];
                       NSString *zip = [addressDictionary 
                                        objectForKey:(NSString *)kABPersonAddressZIPKey];


                       NSLog(@"%@ %@ %@ %@", address,city, state, zip);
                   }

               }];

结果

{

  City = Surat;
  Country = India;
  CountryCode = IN;
  FormattedAddressLines =     (
    Surat,
    Gujarat,
    India
);
Name = Surat;
State = Gujarat;
} 
2012-12-20 21:33:26.284 CurAddress[4110:11603] (null) Surat Gujarat (null)

Answer 3

我会从CLReverseGeocoder课堂开始.

此stackoverflow问题获取当前城市,并可能适合您的使用.