iOS 根据经纬度反查 地名

在iOS中 
定位自己的当前位置，知道经纬度很简单，然后有些时候要知道地名，apple 也有了现成的api直接调用就可以（以下方法是iOS5.0以上的，现在基本都忽略了 iOS5.0以下的设备）

#pragma mark -
#pragma mark CLLocationManagerDelegate

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation {

   CLGeocoder *geocoder=[[CLGeocoder alloc] init];
    [geocoder reverseGeocodeLocation:newLocation
                   completionHandler:^(NSArray *placemarks,
                                       NSError *error)
    {
        CLPlacemark *placemark=[placemarks objectAtIndex:0];
        NSLog(@"name:%@\n country:%@\n postalCode:%@\n ISOcountryCode:%@\n ocean:%@\n inlandWater:%@\n locality:%@\n subLocality:%@ \n administrativeArea:%@\n subAdministrativeArea:%@\n thoroughfare:%@\n subThoroughfare:%@\n",
              placemark.name,
              placemark.country,
               placemark.postalCode,
               placemark.ISOcountryCode,
               placemark.ocean,
               placemark.inlandWater,
               placemark.administrativeArea,
               placemark.subAdministrativeArea,
              placemark.locality,
               placemark.subLocality,
               placemark.thoroughfare,
               placemark.subThoroughfare);
     }];
	if (wasFound) return;
    wasFound = YES;

	CLLocationCoordinate2D loc = [newLocation coordinate];

	strLatitude = [NSString stringWithFormat: @"%f", loc.latitude];
	strLongitude = [NSString stringWithFormat: @"%f", loc.longitude];

	NSLog(@"strLatitude==%@,strLongitude==%@",strLatitude,strLongitude);

}

log 是：

 name:市民广场
 country:中国
 postalCode:(null)
 ISOcountryCode:CN
 ocean:(null)
 inlandWater:(null)
 locality:广东省
 subLocality:(null)
 administrativeArea:深圳市
 subAdministrativeArea:福田区
 thoroughfare:市民广场
 subThoroughfare:(null)

第二种方法就是 我们已经知道了一个经纬度 然后反查地名：

自己写个方法：

-(void)change{
    //22.540681,=114.061324
    CLLocationCoordinate2D coordinate;
    coordinate.latitude =  22.540681;
    coordinate.longitude = 114.061324;
    CLLocation *newLocation=[[CLLocation alloc]initWithLatitude:coordinate.latitude longitude: coordinate.longitude];
    CLGeocoder *geocoder=[[CLGeocoder alloc] init];
    [geocoder reverseGeocodeLocation:newLocation
                   completionHandler:^(NSArray *placemarks,
                                       NSError *error)
     {
         CLPlacemark *placemark=[placemarks objectAtIndex:0];
         NSLog(@"我我的:%@\n country:%@\n postalCode:%@\n ISOcountryCode:%@\n ocean:%@\n inlandWater:%@\n locality:%@\n subLocality:%@ \n administrativeArea:%@\n subAdministrativeArea:%@\n thoroughfare:%@\n subThoroughfare:%@\n",
               placemark.name,
               placemark.country,
               placemark.postalCode,
               placemark.ISOcountryCode,
               placemark.ocean,
               placemark.inlandWater,
               placemark.administrativeArea,
               placemark.subAdministrativeArea,
               placemark.locality,
               placemark.subLocality,
               placemark.thoroughfare,
               placemark.subThoroughfare);
     }];

}

nslog 的结果和上面的一样。