iphone:- MKReverseGeocoder 获取 postalCode、subAdministrativeArea、locality 和 subThoroughfare 的空值

Question

我正在使用 MKReverseGeocoder 和 locationManager 的 didUpdateToLocation 委托(delegate) 但是我想知道当我在 设备。

我的代码如下:-

- (void)viewDidLoad 
{
    locationManager = [[CLLocationManager alloc] init];
    locationManager.delegate = self;
    locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters;
    [locationManager startUpdatingLocation];


     [super viewDidLoad];
}

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
    // this creates a MKReverseGeocoder to find a placemark using the found coordinates
    reverseGeocoder = [[MKReverseGeocoder alloc] initWithCoordinate:newLocation.coordinate];
    reverseGeocoder.delegate = self;
    [reverseGeocoder start];
}

- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFailWithError:(NSError *)error
{
    NSLog(@"MKReverseGeocoder has failed.");
}

- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark
{
    MKPlacemark * myPlacemark = placemark;
    NSString *city = myPlacemark.thoroughfare;
    NSString *subThrough=myPlacemark.subThoroughfare;
    NSString *locality=myPlacemark.locality;
    NSString *subLocality=myPlacemark.subLocality;
    NSString *adminisArea=myPlacemark.administrativeArea;
    NSString *subAdminArea=myPlacemark.subAdministrativeArea;
    NSString *postalCode=myPlacemark.postalCode;
    NSString *country=myPlacemark.country;
    NSString *countryCode=myPlacemark.countryCode;


    NSLog(@"city%@",city);
    NSLog(@"subThrough%@",subThrough);
    NSLog(@"locality%@",locality);
    NSLog(@"subLocality%@",subLocality);
    NSLog(@"adminisArea%@",adminisArea);
    NSLog(@"subAdminArea%@",subAdminArea);
    NSLog(@"postalCode%@",postalCode);
    NSLog(@"country%@",country);
    NSLog(@"countryCode%@",countryCode);

}

输出

cityDrive-in Road

subThrough(null)

地区(空)

subLocality(null)

adminisAreaGujarat

subAdminArea(null)

postalCode(null)

国家/地区印度

国家代码IN

使用 CLGeocoder

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
    // this creates a MKReverseGeocoder to find a placemark using the found coordinates
//    reverseGeocoder = [[MKReverseGeocoder alloc] initWithCoordinate:newLocation.coordinate];
//    reverseGeocoder.delegate = self;
//    [reverseGeocoder start];

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

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

         NSLog(@"%@",[placemarks objectAtIndex:0]);
         for (CLPlacemark *placemark in placemarks) {



             NSLog(@"~~~~~~~~%@",placemark.locality);

         }


     }];
}

输出是:- ~~~~~~~~(null)

我上面的代码在模拟器中正常工作但在设备中不正常.. :( 请帮助并指导我以正确的方式获取城市名称

Answer 1

你真的不应该使用 MKReverseGeocoder 因为它已经被苹果在 iOS5 中贬值了，你真的应该使用 CLGeocoder。 CLGeocode 将返回基于 NSArray *placemarks 的信息，然后您可以遍历它们并调用 assoc 数组中的键。请通过链接。

CLGeoCode Class Reference

Related sample code