Objective:
To be able to show custom markers from dev only and disable google maps' default markers.
Description:
I am trying to put markers in GoogleMap from google_maps_flutter plugin but Google already has its own markers so it is getting in the way of the markers that I am trying to add. Is there any way to just show the map and add user-defined markers only? If not is it possible to minimize the number of markers shown by default map?
Just looked around and found some possible fix.
Seems like we can generate map style from this website:
Styling Wizard.
From there I toned down landmarks and then I was able to remove markers using this:
final String mapStyle =
await rootBundle.loadString('assets/map/map_style.txt');
//Set it on mapcontroller after map is created.
onMapCreated: (GoogleMapController controller) {
if (_controller.isCompleted) {
return;
}
controller.setMapStyle(mapStyle);
_controller.complete(controller);
},
// create a function to create custom marker
Future<BitmapDescriptor> createCustomMarkerBitmap() async {
Uint8List? data = await getBytesFromAsset("assets/icons/map_marker.png", 100);
return BitmapDescriptor.fromBytes(data!);
}
// then call the function to create a custom marker.
BitmapDescriptor? _marker = await createCustomMarkerBitmap();
final Marker marker = Marker(
markerId: _markerId,
position: _position,
icon: _marker, // use the marker
infoWindow: _infoWindow,
onTap: () {},
);
Related
I'm using the flutter GoogleMap widget in my app to which I am adding markers :
Generated by mapping my bloc state.locationPoints
I've successfully implemented different appearances for those BitmapDescriptor markers through my customMarker() method
Now I'd also like to define a separate appearance for the same marker depending on wether it is active (tapped or not)
I've tried doing so using setState but it changes all of my markers appearances while I only want the current one to be changed
BlocBuilder<LocationBloc, LocationState>(
builder: (context, state) {
var markers = <Marker>{};
if (state is LocationLoaded) {
markers = state.locationPoints!.map((locationPoint) {
return Marker(
onTap: () {
},
icon: customMarker(locationPoint),
position: LatLng(
locationPoint.coordinates.latitude,
locationPoint.coordinates.longitude,
),
);
}).toSet();
}
return GoogleMap(
markers: markers,
);
},
);
You have to find the specific marker in your set of markers. If you provide your marker with an ID that contains some information from locationPoint, you could do something like this (in my case I use my place id as markerId):
final markers = state.markers
.map(
(marker) => marker.markerId.value == state.selectedPlace.id
? marker.copyWith(
iconParam: state.saveSelectedMarkerIcon,
)
: marker,
)
.toSet();
I want to code a custom marker which can load a profile pic of a user which is from API and the background should bind with the clip shape which is customized....
click here for view design
It looks like you are trying to use the google maps package, the marker in the package takes BitmapDescriptor, so basically you can load an image from asset. I did not try to add a margin to the marker icon, in my case I just edited the image.
final Uint8List markerIcon = await getBytesFromAsset('assets/images/map_pin.png', 600);
BitmapDescriptor customIcon = BitmapDescriptor.fromBytes(markerIcon);
marker.add(Marker(
markerId: MarkerId(currentLocation!.latitude.toString()),
position: currentLocation!,
draggable: true,
icon: customIcon,
onDragEnd: (LatLng latlng) {
currentLocation = latlng;
}));
I think you want ClipPath https://www.youtube.com/watch?v=oAUebVIb-7s and using some custom paths.
And then, position the map and your marker with a Stack widget.
I think my issue is the same as here:
Flutter show marker's infoWindowText by default in Google map widget
However, there is no answer, except for a link to another post which isn't quite what I want to do.
When my map opens in my app, it shows the markers correctly, but I also want to have all the labels displaying by default on open...
As the shown by one of the markers here:
I'm creating markers like this:
for (Location location in _locations) {
final locationMarker = Marker(
markerId: MarkerId(location.id),
position: LatLng(location.geoY, location.geoX),
infoWindow: InfoWindow(
title: location.name,
),
onTap: () => _onTap(location),
icon: _mapMarkers.icon(location.slug),
draggable: false);
markers.add(locationMarker);
}
Then the map like this:
Widget _map(Set<Marker> markers) => GoogleMap(
mapType: MapType.normal,
initialCameraPosition: CameraPosition(target: widget.mapCentre),
markers: markers,
...
onMapCreated: (controller) => _onMapCreated(controller, markers),
);
And the in _onMapCreated, I've tried to show all the labels, but only the last in the list of markers is actually displayed:
_onMapCreated(GoogleMapController controller, Set<Marker> markers) {
if (mounted) {
setState(() {
_controller.complete(controller);
controller.setMapStyle(_mapStyle);
for (var marker in markers) {
controller.showMarkerInfoWindow(marker.markerId);
}
});
...
I'm using:
[{
"featureType": "poi",
"stylers": [
{
"visibility": "off"
}
]
}]
to remove points of interest from the maps and I am hoping I can do something similar to get marker labels to display by default, but so far I've not found anything when searching google, or that there's another solution.
You can use showMarkerInfoWindow property the GoogleMapController
final GoogleMapController controller = await _controller.future;
controller.showMarkerInfoWindow(MarkerId('ID_MARKET'));
I am Vaibhav Pathak. I am working on a Flutter app in which I add markers in-app based on data change in firestore database and I want to remove the previous marker from the map using its marker id but I don't understand how to do it. I had watched many Youtube videos and blogs but I don't get to know this because of API changes in google maps flutter plugin. For your kind information, I want to tell that I am using the latest version of the google_maps flutter plugin.
My Code for Making Markers :
showLiveLocation(LatLng latLng) {
_markers.add(
Marker(
markerId: MarkerId(latLng.toString()),
position: latLng,
draggable: false,
infoWindow: InfoWindow(
title: "Live Order Location",
snippet: "Dear customer your order is live at this place."),
icon: liveLocation,
visible: true,
),
);
}
Thanks for everyone's help.
github : github#vkpdeveloper
You need to find that specific marker in your _markers list (e.g. by firstWhere()) and then remove it from the list of markers.
Edit:
Marker marker = _markers.firstWhere((marker) => marker.markerId.value == "myId",orElse: () => null);
setState(() {
_markers.remove(marker);
});
This will trigger a rebuild of your map where the marker is no longer included.
Inspired by Thomas, my solution was:
setState(() {
_markers.removeWhere((key, marker) => marker.markerId.value == "myMarkerId");
});
I'm using mapbox on flutter with flutter_map package and need to add marker on map when tapped on map and then get marker lat and long to send to server.
As far as I know, this functionality isn't available yet. There is however a pull request you can use to get this functionality while you wait for the Flutter team to merge it into the flutter_google_maps repo. You can find the pull request and code here
When using this pull request version you can do something like the below:
void _onMapLongTapped(LatLng location) {
// add place marker code here
_addMyMarker(location);
}
Future<void> _addMyMarker(LatLng location) async {
if (_myMarker != null) {
mapController.updateMarker(
_myMarker,
MarkerOptions(
position: LatLng(
location.latitude,
location.longitude,
)),
);
} else {
_myMarker = await mapController.addMarker(
MarkerOptions(
position: LatLng(
location.latitude,
location.longitude,
),
),
);
}}