7.7 Converting Meaningful Addresses to Longitude and Latitude

通过地址获取经纬度

- (void)viewDidLoad

{

    [super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

//    NSString *oreillyAddress = @"1005 Gravenstein Highway North, Sebastopol, CA 95472, USA";

    NSString *oreillyAddress = @"北京";

    self.myGeocoder = [[CLGeocoder alloc] init];

    [self.myGeocoder geocodeAddressString:oreillyAddress completionHandler:^(NSArray *placemarks, NSError *error)

    {

         if ([placemarks count] > 0 && error == nil){

             NSLog(@"Found %lu placemark(s).", (unsigned long)[placemarks count]);

             CLPlacemark *firstPlacemark = [placemarks objectAtIndex:0];

             NSLog(@"Longitude = %f", firstPlacemark.location.coordinate.longitude);

             NSLog(@"Latitude = %f", firstPlacemark.location.coordinate.latitude);

         }

         else if ([placemarks count] == 0 && error == nil){

             NSLog(@"Found no placemarks.");

         }

         else if (error != nil){

             NSLog(@"An error occurred = %@", error);

         }

     }];

}

输出：

2014-04-08 13:53:28.415 cookbook[504:c07] Found 1 placemark(s).

2014-04-08 13:53:28.416 cookbook[504:c07] Longitude = 116.405285

2014-04-08 13:53:28.416 cookbook[504:c07] Latitude = 39.904989