这可以使用flutter_svg包来实现。
import 'dart:ui' as ui; // imported as ui to prevent conflict between ui.Image and the Image widgetimport 'package:flutter/services.dart';import 'package:flutter_svg/flutter_svg.dart';import 'package:google_maps_flutter/google_maps_flutter.dart';Future<BitmapDescriptor> _bitmapDescriptorFromSvgAsset(BuildContext context, String assetName) async { // Read SVG file as String String svgString = await DefaultAssetBundle.of(context).loadString(assetName); // Create DrawableRoot from SVG String DrawableRoot svgDrawableRoot = await svg.fromSvgString(svgString, null); // toPicture() and toImage() don't seem to be pixel ratio aware, so we calculate the actual sizes here MediaQueryData queryData = MediaQuery.of(context); double devicePixelRatio = queryData.devicePixelRatio; double width = 32 * devicePixelRatio; // where 32 is your SVG's original width double height = 32 * devicePixelRatio; // same thing // Convert to ui.Picture ui.Picture picture = svgDrawableRoot.toPicture(size: Size(width, height)); // Convert to ui.Image. toImage() takes width and height as parameters // you need to find the best size to suit your needs and take into account the // screen DPI ui.Image image = await picture.toImage(width, height); ByteData bytes = await image.toByteData(format: ui.ImageByteFormat.png); return BitmapDescriptor.fromBytes(bytes.buffer.asUint8List());}然后，您可以照常使用BitmapDescriptor创建标记：
BitmapDescriptor bitmapDescriptor = await _bitmapDescriptorFromSvgAsset(context, 'assets/images/someimage.svg');Marker marker = Marker(markerId: MarkerId('someId'), icon: bitmapDescriptor, position: LatLng(someLatitude, someLongitude));
