A flutter plugin for Google Maps

   import 'package:map_view/map_view.dart';
   
   void main() {
     MapView.setApiKey("<your_api_key>");
     runApp(new MyApp());
   }

var uri = staticMapProvider.getImageUriFromMap(mapView,
                  width: 900, height: 400);

mapView.show(
        new MapOptions(
            mapViewType: MapViewType.normal,
            showUserLocation: true,
            initialCameraPosition: new CameraPosition(
                new Location(45.5235258, -122.6732493), 14.0),
            title: "Recently Visited"),
        toolbarActions: [new ToolbarAction("Close", 1)]);

mapView.onMapReady.listen((_) {
  print("Map ready");
});

mapView.setMarkers(<Marker>[
    new Marker("1", "Work", 45.523970, -122.663081, color: Colors.blue),
    new Marker("2", "Nossa Familia Coffee", 45.528788, -122.684633),
]);

mapView.addMarker(new Marker("3", "10 Barrel", 45.5259467, -122.687747,
        color: Colors.purple));

- project_name
    |-android
    |-images
        |-flower_vase.png
    |-ios
    |-lib
    # Rest of project folders and files

flutter:
    # Code already existent

    # Added asset.
    assets:
        - images/flower_vase.png

new Marker(
      "1",
      "Something fragile!",
      45.52480841512737,
      -122.66201455146073,
      color: Colors.blue,
      draggable: true, //Allows the user to move the marker.
      markerIcon: new MarkerIcon(
        "images/flower_vase.png", //Asset to be used as icon
        width: 112.0, //New width for the asset
        height: 75.0, // New height for the asset
      ),
    );

Marker marker=new Marker(
      "1",
      "Something fragile!",
      45.52480841512737,
      -122.66201455146073,
      draggable: true, //Allows the user to move the marker.
    );

// This listener fires when the marker is long pressed and could be moved.
mapView.onAnnotationDragStart.listen((markerMap) {
      var marker = markerMap.keys.first;
      var location = markerMap[marker]; // The original location of the marker before moving it. Use it if needed.
      print("Annotation ${marker.id} dragging started");
    });
// This listener fires when the user releases the marker.
mapView.onAnnotationDragEnd.listen((markerMap) {
      var marker = markerMap.keys.first;
      var location = markerMap[marker]; // The actual position of the marker after finishing the dragging.
      print("Annotation ${marker.id} dragging ended");
    });
// This listener fires every time the marker changes position.
mapView.onAnnotationDrag.listen((markerMap) {
      var marker = markerMap.keys.first;
      var location = markerMap[marker]; // The updated position of the marker.
      print("Annotation ${marker.id} moved to ${location.latitude} , ${location
          .longitude}");
    });

mapView.addPolyline(new Polyline(
          "12",
          <Location>[
            new Location(45.519698, -122.674932),
            new Location(45.516687, -122.667014),
          ],
          width: 15.0));

mapView.setPolylines(<Polyline>[
        new Polyline(
          "11",
          <Location>[
            new Location(45.523970, -122.663081),
            new Location(45.528788, -122.684633),
            new Location(45.528864, -122.667195),
          ],
          jointType: FigureJointType.round,
          width: 15.0,
          color: Colors.orangeAccent,
        ),
        new Polyline(
          "12",
          <Location>[
            new Location(45.519698, -122.674932),
            new Location(45.516687, -122.667014),
          ],
          width: 15.0,
        ),
      ]);

mapView.addPolygon(new Polygon(
                                 "111",
                                 <Location>[
                                   new Location(45.5231233, -122.6733130),
                                   new Location(45.5233225, -122.6732969),
                                   new Location(45.5232398, -122.6733506),
                                   new Location(45.5231233, -122.6733130),
                                 ],
                                 jointType: FigureJointType.round,
                                 strokeWidth: 5.0,
                                 strokeColor: Colors.red,
                                 fillColor: Color.fromARGB(75, 255, 0, 0),
                                 ));

 mapView.setPolygons(<Polygon>[
        new Polygon(
            "111",
            <Location>[
              new Location(42.9274334, -72.2811234),
              new Location(42.9258230, -72.2808444),
              new Location(42.9261294, -72.2779906),
              new Location(42.9275120, -72.2779155),
            ],
            //you can add a hole inside the polygon
            holes: <Hole>[
              new Hole(
                <Location>[
                  new Location(42.9270721, -72.2797287),
                  new Location(42.9266400, -72.2796750),
                  new Location(42.9267186, -72.2790956),
                  new Location(42.9270014, -72.2790956),
                ],
              ),
            ],
            jointType: FigureJointType.round,
            strokeWidth: 5.0,
            strokeColor: Colors.red,
            fillColor: Color.fromARGB(75, 255, 0, 0)),
        new Polygon(
            "111",
            <Location>[
              new Location(45.5231233, -122.6733130),
              new Location(45.5233225, -122.6732969),
              new Location(45.5232398, -122.6733506),
              new Location(45.5231233, -122.6733130),
            ],
            jointType: FigureJointType.round,
            strokeWidth: 5.0,
            strokeColor: Colors.red,
            fillColor: Color.fromARGB(75, 255, 0, 0)),
      ]);

//Remove all markers
mapView.clearA

mapView.zoomToFit(padding: 100);

mapView.onLocationUpdated
     .listen((location) => print("Location updated $location"));

//Marker
mapView.onTouchAnnotation.listen((annotation) => print("annotation ${annotation.id} tapped"));
//Polyline
mapView.onTouchPolyline.listen((polyline) => print("polyline ${polyline.id} tapped"));
//Polygon
mapView.onTouchPolygon.listen((polygon) => print("polygon ${polygon.id} tapped"));

mapView.onMapTapped
     .listen((location) => print("Touched location $location"));
mapView.onMapLongTapped
     .listen((location) => print("Long tapped location $location"));

mapView.onIndoorBuildingActivated.listen(
        (indoorBuilding) => print("Activated indoor building $indoorBuilding"));
mapView.onIndoorLevelActivated.listen(
    (indoorLevel) => print("Activated indoor level $indoorLevel"));

mapView.onCameraChanged.listen((cameraPosition) =>
     this.setState(() => this.cameraPosition = cameraPosition));

mapView.onToolbarAction.listen((id) {
  if (id == 1) {
    _handleDismiss();
    }
});

double zoomLevel = await mapView.zoomLevel;

Location centerLocation = await mapView.centerLocation;

List<Marker> visibleAnnotations = await mapView.visibleAnnotations;