你能从一个地址在Mapview中创build一个注解吗？

今天我几次“search”这个问题，没有运气。 我想知道是否有可能从一个地址，而不是使用lat / Long方法在Mapview中创build注释。 我目前的代码如下。

//1. Create a coordinate for use with the annotation CLLocationCoordinate2D Sharon; Sharon.latitude = 38.952223; Sharon.longitude = -77.193646; Annotation *myAnnotation = [Annotation alloc]; myAnnotation.coordinate = Sharon; myAnnotation.title = @"Sharon Lodge #327"; myAnnotation.subtitle = @"McLean, VA"; 

Answer 1

像这样尝试，

 NSString *location = "some address, state, and zip"; CLGeocoder *geocoder = [[CLGeocoder alloc] init]; [geocoder geocodeAddressString:location completionHandler:^(NSArray* placemarks, NSError* error){ if (placemarks && placemarks.count > 0) { CLPlacemark *topResult = [placemarks objectAtIndex:0]; MKPlacemark *placemark = [[MKPlacemark alloc] initWithPlacemark:topResult]; MKCoordinateRegion region = self.mapView.region; region.center = placemark.region.center; region.span.longitudeDelta /= 8.0; region.span.latitudeDelta /= 8.0; [self.mapView setRegion:region animated:YES]; [self.mapView addAnnotation:placemark]; } ]; 

对于注释标题和副标题，

 CLPlacemark *topResult = [placemarks objectAtIndex:0]; // Create an MLPlacemark MKPlacemark *placemark = [[MKPlacemark alloc] initWithPlacemark:topResult]; // Create an editable PointAnnotation, using placemark's coordinates, and set your own title/subtitle MKPointAnnotation *point = [[MKPointAnnotation alloc] init]; point.coordinate = placemark.coordinate; point.title = @"Sample Location"; point.subtitle = @"Sample Subtitle"; // Set your region using placemark (not point) MKCoordinateRegion region = self.mapView.region; region.center = placemark.region.center; region.span.longitudeDelta /= 8.0; region.span.latitudeDelta /= 8.0; // Add point (not placemark) to the mapView [self.mapView setRegion:region animated:YES]; [self.mapView addAnnotation:point]; // Select the PointAnnotation programatically [self.mapView selectAnnotation:point animated:NO]; 

Answer 2

你可以使用google api或CLGeocoder从地址获取纬度

谷歌API

链接1 链接2

CLGeocoder

 -(id)getAnnotationAryFromAddress { CLGeocoder *geocoder2 = [[CLGeocoder alloc] init]; NSString *addressString = "string contain address, city, state and zip"; [geocoder2 geocodeAddressString:addressString completionHandler:^(NSArray *placemarks, NSError *error) { if (error) { //NSLog(@"Geocode failed with error: %@", error); return; } if (placemarks && placemarks.count > 0) { CLPlacemark *placemark = [placemarks objectAtIndex:0]; CLLocation *location = placemark.location; RegionAnnotation *annotation = [[RegionAnnotation alloc] init]; CLLocationCoordinate2D theCoordinate1; theCoordinate1 = location.coordinate; annotation.title = @"Title"; annotation.subtitle = @"SubTitle"; annotation.tag = i; annotation.coordinate = theCoordinate1; [self.mapView addAnnotation:annotation]; } }]; } return self; }