从GPS坐标中获取区域的文本描述 - Get text description of region from GPS coordinates

Get text description of region from GPS coordinates

我在iOS中使用Core Location来获取GPS坐标。我想得到一些人类可读的文本描述，这些坐标所在的一般区域。我可以在设备本身的本地或在我提交坐标的基于PHP的网站上完成这项工作。

有什么想法吗？

您可以创建URL来检索一组坐标的文本描述，如下所示：

http://maps.google.com/maps/geo?q="纬度"、"经度"&输出=csv&传感器=错误

E.Ghttp://maps.google.com/maps/geo?q=37.42228990140251，-122.082035425683&输出=csv&传感器=错误

您可以使用MKReverseGeocoder在设备本身的iOs中执行反向地理编码：http://developer.apple.com/library/ios/#documentation/MapKit/Reference/MKReverseGeocoder_Class/Reference/Reference.html#//apple_ref/occ/cl/MKReverseGeocoder

您可以在这里看到一些示例用法。

我在应用程序中使用CLLocationManagerDelegate和MKReverseGeocodeDelegate。创建CLLocationManager*位置管理器设置其属性和准确性，然后启动。

- (void)locationManager:(CLLocationManager *)manager
       didUpdateHeading:(CLHeading *)newHeading 
{
    [manager stopUpdatingHeading];
    CLLocationCoordinate2D coordinate = manager.location.coordinate;
    MKReverseGeocoder * geocoder = [[MKReverseGeocoder alloc] initWithCoordinate:coordinate];
    geocoder.delegate = self;
    [geocoder start];
}
#pragma mark - MKReverseGeocoderDelegate

您将获得带有位置信息的NSDictionary。我没有用过所有的钥匙。如果您需要超过列出的NSLOG字典键及其响应值。希望它能帮助你。

- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark
{
    getLocationState = glsAvailable;
    NSDictionary * dic = placemark.addressDictionary;
    NSString * CountryCode = [dic objectForKey:@"CountryCode"];
    NSString * State = [dic objectForKey:@"State"];
    NSString * City = [dic objectForKey:@"City"];
    NSString * SubLocality = [dic objectForKey:@"SubLocality"];
    NSString * Street = [dic objectForKey:@"Street"];
    NSString * ZIP = [dic objectForKey:@"ZIP"];
    self.locationString = [NSString stringWithFormat:@"%@ %@ %@ %@ %@ %@",
                           CountryCode?CountryCode:@"",
                           State?State:@"",
                           City?City:@"",
                           SubLocality?SubLocality:@"",
                           Street?Street:@"",
                           ZIP?ZIP:@""
                           ];
    [[NSNotificationCenter defaultCenter] postNotificationName:@"LOCATION_STRING_IS_READY" object:nil];
    [geocoder cancel];
    [geocoder release];
}