Then just provide it to the GoogleMap widget. GoogleMap( polygons: myPolygon(), mapType: MapType.normal, initialCameraPosition: _kGooglePlex, ...
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Howtoaddapolygonongooglemaps?
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Asked
2years,11monthsago
Modified
2years,7monthsago
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I'musinggoogle_maps_flutterplugintousegooglemaps.Iwanttodrawapolygonongooglemapswithcoordinatestakenfromtheuser.Thecoordinatestakenaretypeof'Position'object.
Ihavealreadytriedusingmap_viewplugintodrawpolygons.Butitdidn'tworkforme.
Thisisthecodesnippetwherethecoordinatesarebeingtaken.
Geolocatorgeolocator=Geolocator();
StreamSubscription_positionStreamSubscription;
finalList_positions=[];
void_toggleListening(){
if(_positionStreamSubscription==null){
constLocationOptionslocationOptions=
LocationOptions(accuracy:LocationAccuracy.best,distanceFilter:10);
finalStreampositionStream=
Geolocator().getPositionStream(locationOptions);
_positionStreamSubscription=positionStream.listen(
(Positionposition)=>setState(()=>_positions.add(position)));
_positionStreamSubscription.pause();
}
setState((){
if(_positionStreamSubscription.isPaused){
_positionStreamSubscription.resume();
}else{
_positionStreamSubscription.pause();
}
});
androidgoogle-mapsflutterdart
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editedJul2,2019at9:34
sejal.8
askedJul2,2019at9:27
sejal.8sejal.8
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2
Well,ifyoucanconvertthecoordinatesofyourPositionobjectstoLatLngobjects,thenyoucanusegoogle_maps_flutteritselftodrawpolygons.YoucanseethatoneofitsparametersallowsforPolygons.Sojustbuildingupontheexamplefromgoogle_maps_flutter,we'llfirstsetupourpolygon:
SetmyPolygon(){
ListpolygonCoords=newList();
polygonCoords.add(LatLng(37.43296265331129,-122.08832357078792));
polygonCoords.add(LatLng(37.43006265331129,-122.08832357078792));
polygonCoords.add(LatLng(37.43006265331129,-122.08332357078792));
polygonCoords.add(LatLng(37.43296265331129,-122.08832357078792));
SetpolygonSet=newSet();
polygonSet.add(Polygon(
polygonId:PolygonId('test'),
points:polygonCoords,
strokeColor:Colors.red));
returnpolygonSet;
}
ThenjustprovideittotheGoogleMapwidget.
GoogleMap(
polygons:myPolygon(),
mapType:MapType.normal,
initialCameraPosition:_kGooglePlex,
onMapCreated:(GoogleMapControllercontroller){
_controller.complete(controller);
},
),
ThiswilldrawasmalltriangleneartheGooglePlex.
Formoreinformationonthisfeature,youcanrefertotheAndroiddocumentationofMapsSDKShapes.TheAPIusageshouldbesame,ifnotsimilar,soyoucanuseitasaguideline.
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editedNov12,2019at19:30
answeredNov12,2019at19:21
TWLTWL
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