是的,谷歌地图 API 已更改,标记 API 是基于小部件的,不再基于控制器。
By 变更日志.md https://pub.dartlang.org/packages/google_maps_flutter#030
“重大更改。将 Marker API 更改为基于小部件,它是基于控制器。还更改了示例应用程序以说明相同的情况。”
我复制了一些代码github应用程序示例 https://github.com/flutter/plugins/blob/master/packages/google_maps_flutter/google_maps_flutter/example/lib/place_marker.dart我认为对你很重要
Map<MarkerId, Marker> markers = <MarkerId, Marker>{}; // CLASS MEMBER, MAP OF MARKS
void _add() {
var markerIdVal = MyWayToGenerateId();
final MarkerId markerId = MarkerId(markerIdVal);
// creating a new MARKER
final Marker marker = Marker(
markerId: markerId,
position: LatLng(
center.latitude + sin(_markerIdCounter * pi / 6.0) / 20.0,
center.longitude + cos(_markerIdCounter * pi / 6.0) / 20.0,
),
infoWindow: InfoWindow(title: markerIdVal, snippet: '*'),
onTap: () {
_onMarkerTapped(markerId);
},
);
setState(() {
// adding a new marker to map
markers[markerId] = marker;
});
}
GoogleMap(
onMapCreated: _onMapCreated,
initialCameraPosition: const CameraPosition(
target: LatLng(-33.852, 151.211),
zoom: 11.0,
),
// TODO(iskakaushik): Remove this when collection literals makes it to stable.
// https://github.com/flutter/flutter/issues/28312
// ignore: prefer_collection_literals
markers: Set<Marker>.of(markers.values), // YOUR MARKS IN MAP
)
我建议你看看示例应用程序here https://github.com/flutter/plugins/blob/master/packages/google_maps_flutter/google_maps_flutter/example/lib/place_marker.dart。已更新为新的 API。