反向地理编码用法

与地图打交道时，有时需要查找经纬度获取地理信息，MapKit提供了一种工具--反向地理编码 MKReverseGeocoder

MKReverseGeocoder *reverseGeocoder =[[[MKReverseGeocoder alloc] initWithCoordinate:self.mapView.userLocation.location.coordinate] autorelease];

    NSLog(@"%g",self.mapView.userLocation.location.coordinate.latitude);

    NSLog(@"%g",self.mapView.userLocation.location.coordinate.longitude);

   reverseGeocoder.delegate = self;

    [reverseGeocoder start];

然后实现下面两个代理方法即可获得你想要的地理信息

- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFailWithError:(NSError *)error{

    NSLog(@"MKReverseGeocoder has failed.");

}

- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark{

    NSLog(@"当前地理信息为：%@",placemark.locality);

}