Как получить название места от широты и долготы?

Question

Я получаю широты и долготы от апи, и нужно, чтобы получить название места из этих cooridinates, так что я использую этот блок кода

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

CLLocation *LocationAtual=[[CLLocation alloc] initWithLatitude:[[latlong objectForKey:@"latitude"] doubleValue] 
                longitude:[[latlong objectForKey:@"longitude"] doubleValue]]; 

NSLog(@"loc %@", LocationAtual); 

[ceo reverseGeocodeLocation:LocationAtual completionHandler:^(NSArray *placemarks, NSError *error) 
{ 
    CLPlacemark *placemark = [placemarks objectAtIndex:0]; 
    NSLog(@"placemark %@",placemark); 
    //String to hold address 
    NSString *locatedAt = [[placemark.addressDictionary valueForKey:@"FormattedAddressLines"] componentsJoinedByString:@", "]; 
    NSLog(@"addressDictionary %@", placemark.addressDictionary); 

    NSLog(@"placemark %@",placemark.region); 
    NSLog(@"placemark %@",placemark.country); // Give Country Name 
    NSLog(@"placemark %@",placemark.locality); // Extract the city name 
    NSLog(@"location %@",placemark.name); 
    NSLog(@"location %@",placemark.ocean); 
    NSLog(@"location %@",placemark.postalCode); 
    NSLog(@"location %@",placemark.subLocality); 

    NSLog(@"location %@",placemark.location); 

    NSLog(@"I am currently at %@",locatedAt); 
    NSLog(@" "); 
} 
]; 

Но когда мой контроль идет по этой линии

[ceo reverseGeocodeLocation:LocationAtual completionHandler:^(NSArray *placemarks, NSError *error) 

этот блок кода не выполнен. Контроль идет.

Answer 1

В viewDidLoad OfYour класса или любого другого класса просто добавить:

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
// Add observer 
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(gotPlaceInfo:) name:@"gotPlaceInfoNotification" object:nil]; 
} 

//define `gotPlaceInfo`: 
-(void)gotPlaceInfo:(NSNotification *)notif{ 

NSLog(@"place mark dict is %@", notif.userInfo); 
} 

я просто добавить одну строку в ваш код:

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

    CLLocation *LocationAtual=[[CLLocation alloc] initWithLatitude:[[latlong objectForKey:@"latitude"] doubleValue] 
                 longitude:[[latlong objectForKey:@"longitude"] doubleValue]]; 

    NSLog(@"loc %@", LocationAtual); 

    [ceo reverseGeocodeLocation:LocationAtual completionHandler:^(NSArray *placemarks, NSError *error) 
    { 
     CLPlacemark *placemark = [placemarks objectAtIndex:0]; 

NSDictionary *currentLocationDictionary = @{@"CLPlacemark":CLPlacemark}; 
     NSLog(@"placemark %@",placemark); 
     //String to hold address 
     NSString *locatedAt = [[placemark.addressDictionary valueForKey:@"FormattedAddressLines"] componentsJoinedByString:@", "]; 
     NSLog(@"addressDictionary %@", placemark.addressDictionary); 

     NSLog(@"placemark %@",placemark.region); 
     NSLog(@"placemark %@",placemark.country); // Give Country Name 
     NSLog(@"placemark %@",placemark.locality); // Extract the city name 
     NSLog(@"location %@",placemark.name); 
     NSLog(@"location %@",placemark.ocean); 
     NSLog(@"location %@",placemark.postalCode); 
     NSLog(@"location %@",placemark.subLocality); 

     NSLog(@"location %@",placemark.location); 

     NSLog(@"I am currently at %@",locatedAt); 
     NSLog(@" "); 
NSNotification *notification2 = [NSNotification notificationWithName:@"gotPlaceInfoNotification" object:self userInfo:currentLocationDictionary]; 
    [[NSNotificationCenter defaultCenter] postNotification:notification2]; 
    } 
    ]; 

Надеюсь, что это даст вам общий уровень ning

Answer 2

Попробуйте этот код из Ram G ответа This Question это работает для вас

- (void) getAddressFromLatLon:(CLLocation *)bestLocation 
{ 
    NSLog(@"%f %f", bestLocation.coordinate.latitude, bestLocation.coordinate.longitude); 
    CLGeocoder *geocoder = [[CLGeocoder alloc] init] ; 
    [geocoder reverseGeocodeLocation:bestLocation 
        completionHandler:^(NSArray *placemarks, NSError *error) 
    { 
     if (error){ 
      NSLog(@"Geocode failed with error: %@", error); 
      return; 
     } 
     CLPlacemark *placemark = [placemarks objectAtIndex:0]; 
     NSLog(@"placemark.ISOcountryCode %@",placemark.ISOcountryCode); 
     NSLog(@"locality %@",placemark.locality); 
     NSLog(@"postalCode %@",placemark.postalCode); 

    }]; 

}