Problem with MKReverseGeocoder - iphone

Question

For some reason, I cannot get the name of the city (locality) from my code. Please help!
- (void)viewDidLoad {
[super viewDidLoad];
self.lm = [[CLLocationManager alloc] init];
lm.delegate = self;
lm.desiredAccuracy = kCLLocationAccuracyBest;
lm.distanceFilter = kCLDistanceFilterNone;
[lm startUpdatingLocation];
}
- (void) locationManager:(CLLocationManager *)manager didUpdateToLocation: (CLLocation *) newLocation fromLocation: (CLLocation *)oldLocation {
if (!geocoder) {
geocoder = [[MKReverseGeocoder alloc] initWithCoordinate:newLocation.coordinate];
geocoder.delegate = self;
[geocoder start];
}
NSString *lat = [[NSString alloc] initWithFormat:#"%f", newLocation.coordinate.latitude];
NSString *lng = [[NSString alloc] initWithFormat:#"%f", newLocation.coordinate.longitude];
NSString *acc = [[NSString alloc] initWithFormat:#"%f", newLocation.horizontalAccuracy];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:lat message:lng delegate:self cancelButtonTitle:acc otherButtonTitles: #"button", nil];
[alert show];
[alert release];
[lat, lng, acc release];
}
- (void) reverseGeocoder:(MKReverseGeocoder *)geo didFailWithError:(NSError *)error {
[geocoder release];
geocoder = nil;
}
- (void)reverseGeocoder:(MKReverseGeocoder *)geo didFindPlacemark:(MKPlacemark *)placemark {
**THIS IS WHERE THE ERROR IS OCCURRING** (REQUEST FOR MEMBER 'LOCALITY' IN SOMETHING NOT A STRUCTURE OR UNION)
location = [NSString stringWithFormat:#"%#", placemark.locality];
[geocoder release];
geocoder = nil;
}

Answer 1

I realize that this is a relatively old question, but ...
I ran into the exact same issue and resorted to using the addressDictionary placemark attribute, e.g.,
[placemark.addressDictionary objectForKey#"City"]
instead of
placemark.subAdministrativeArea
I don't understand why the latter doesn't work either.

Answer 2

This error usually occurs when you are trying to access a member of a structure, but in something that is not a structure. For example:
struct {
int a;
int b;
} foo;
int fum;
fum.d = 5;
It also happens if you're trying to access an instance when you have a pointer, and vice versa. For example:
struct foo {
int x, y, z;
};
struct foo a, *b = &a;
b.x = 12; /* This will generate the error, it should be b->x or (*b).x */
It also appears if you do this:
struct foo { int x, int y, int z }foo;
foo.x=12
instead of:
struct foo { int x; int y; int z; }foo;
foo.x=12
Because then, you get a code that looks like it's dealing with instances, when in fact it's dealing with pointers.
It seems to me that you need to check on your code.
Perhaps, try this:
NSString *strLocation = (NSString *)placemark.locality; // Get locality