Contoh ini menunjukkan batas peta untuk
GMSFeatureTypeLocality
, dan menerapkan
fungsi delegasikan yang menata gaya klik
poligon. Hasilnya menampilkan jendela peringatan info dengan data peristiwa.
Swift
class SampleViewController: UIViewController { private lazy var mapView: GMSMapView = GMSMapView(frame: .zero, mapID: GMSMapID(identifier: "YOUR_MAP_ID"), camera: GMSCameraPosition(latitude: 40, longitude: -80, zoom: 12)) override func loadView() { view = mapView let style = FeatureStyle(fill: .orange.withAlphaComponent(0.5), stroke: .orange, strokeWidth: 2) mapView.featureLayer(of: .locality).style = { _ in style } mapView.delegate = self } } extension SampleViewController: GMSMapViewDelegate { func mapView(_ mapView: GMSMapView, didTap features: [Feature], in featureLayer: FeatureLayer<Feature>, atLocation: CLLocationCoordinate2D) { let toast = UIAlertController(title: "Clicked places", message: (features.compactMap { ($0 as? PlaceFeature)?.placeID }).joined(separator: ", "), preferredStyle: .alert) present(toast, animated: true, completion: nil) } }
Objective-C
@interface SampleViewController: UIViewController <GMSMapViewDelegate> @end @implementation SampleViewController - (void)loadView { GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero mapID:[GMSMapID mapIDWithIdentifier:@"YOUR_MAP_ID"] camera:[GMSCameraPosition cameraWithLatitude:40 longitude:-80 zoom:12]]; mapView.delegete = self; GMSFeatureStyle *style = [GMSFeatureStyle styleWithFillColor:[[UIColor orangeColor] colorWithAlphaComponent:0.5] strokeColor:[UIColor orangeColor] strokeWidth:2.0]; [mapView featureLayerOfFeatureType:GMSFeatureTypeLocality].style = ^(GMSPlaceFeature *feature) { return style; }; self.view = mapView; } - (void)mapView:(GMSMapView *)mapView didTapFeatures:(NSArray<id<GMSFeature>> *)features inFeatureLayer:(GMSFeatureLayer *)featureLayer atLocation:(CLLocationCoordinate2D)location { NSMutableArray<NSString *> *places = [NSMutableArray array]; for (id<GMSFeature> feature in features) { if (![feature isKindOfClass:[GMSPlaceFeature class]]) { continue; } NSString *placeID = ((GMSPlaceFeature *)feature).placeID; [places addObject:placeID]; } UIAlertController *toast = [UIAlertController alertControllerWithTitle:@"Clicked places" message:[places componentsJoinedByString:@", "] preferredStyle:UIAlertControllerStyleAlert]; [self presentViewController:toast animated:YES completion:nil]; }