商家和其他地图注点

请选择平台： Android iOS JavaScript

默认情况下，地图注点 (POI) 将与对应的图标一起显示在基本地图上。地图注点包括公园、学校、政府大楼和 。另外，商家地图注点默认会显示在地图上 类型为 kGMSTypeNormal。商家地图注点表示商店、 餐馆、酒店等等。

根据 Places SDK for iOS 的定义，一个地图注点对应一个地点 ID。例如，休闲公园为地图注点，但喷泉等地点通常不属于地图注点（除非它们具有国家/地区或历史意义）。

监听地图注点上的点击事件

如果您想对用户点按某个地图注点的操作作出响应，请实现 GMSMapViewDelegate，然后实现 mapView(_:didTapPOIWithPlaceID:name:location:) 方法，如以下示例所示：

Swift

import GoogleMaps

class POI: UIViewController, GMSMapViewDelegate {

  override func loadView() {
    let camera = GMSCameraPosition.camera(
      withLatitude: 47.603,
      longitude:-122.331,
      zoom:14
    )
    let mapView = GMSMapView.map(withFrame: .zero, camera: camera)
    mapView.delegate = self
    self.view = mapView
  }

  func mapView(
    _ mapView: GMSMapView,
    didTapPOIWithPlaceID placeID: String,
    name: String,
    location: CLLocationCoordinate2D
  ) {
    print("You tapped \(name): \(placeID), \(location.latitude)/\(location.longitude)")
  }
}
      

Objective-C

#import "POI.h"
@import GoogleMaps;

@interface POI () <GMSMapViewDelegate>

@end

@implementation POI

- (void)loadView {
  GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:47.603
                                                            longitude:-122.331
                                                                 zoom:14];
  GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
  mapView.delegate = self;
  self.view = mapView;
}

#pragma mark - GMSMapViewDelegate

- (void)mapView:(GMSMapView *)mapView
    didTapPOIWithPlaceID:(NSString *)placeID
                    name:(NSString *)name
                location:(CLLocationCoordinate2D)location {
  NSLog(@"You tapped %@: %@, %f/%f", name, placeID, location.latitude, location.longitude);
}

@end
      

在信息窗口中显示详细信息

地图注点会默认显示在地图上，但是没有默认的点击界面（用户点击地图注点时，API 不会自动显示信息窗口或任何其他界面）。以下示例展示了如何使用标记来 显示地图注点的信息窗口：

Swift

// Declare GMSMarker instance at the class level.
let infoMarker = GMSMarker()

// Attach an info window to the POI using the GMSMarker.
func mapView(
  _ mapView: GMSMapView,
  didTapPOIWithPlaceID placeID: String,
  name: String,
  location: CLLocationCoordinate2D
) {
  infoMarker.snippet = placeID
  infoMarker.position = location
  infoMarker.title = name
  infoMarker.opacity = 0;
  infoMarker.infoWindowAnchor.y = 1
  infoMarker.map = mapView
  mapView.selectedMarker = infoMarker
}
      

Objective-C

// Declare a GMSMarker instance at the class level.
GMSMarker *infoMarker;

// Attach an info window to the POI using the GMSMarker.
- (void)mapView:(GMSMapView *)mapView
    didTapPOIWithPlaceID:(NSString *)placeID
                    name:(NSString *)name
                location:(CLLocationCoordinate2D)location {
  infoMarker = [GMSMarker markerWithPosition:location];
  infoMarker.snippet = placeID;
  infoMarker.title = name;
  infoMarker.opacity = 0;
  CGPoint pos = infoMarker.infoWindowAnchor;
  pos.y = 1;
  infoMarker.infoWindowAnchor = pos;
  infoMarker.map = mapView;
  mapView.selectedMarker = infoMarker;
}
      

停止在地图上显示地图注点

您可以通过向所有地图注点或 特定类别的地图注点。

以下 JSON 样式声明会在地图上隐藏所有商家地图注点：

[
  {
    "featureType": "poi.business",
    "stylers": [
      { "visibility": "off" }
    ]
  }
]

下面的另一个 JSON 示例可以简化所有类别地图注点的显示：

[
  {
    "featureType": "poi",
    "stylers": [
      { "visibility": "simplified" }
    ]
  }
]

如需了解详情，请参阅有关通过样式设置隐藏地图项的指南。