Leaflet-Routing-Machine：TypeError：无法读取未定义的属性“ getSize”

问题描述

不确定如何发生这种情况，因为我正在使用useRef将地图的引用传递给“路由机器”组件...

但是首先这是我的依赖...

        "react-leaflet": "^2.7.0","leaflet": "^1.7.1","leaflet-control-geocoder": "^1.13.0","leaflet-geosearch": "^3.0.6","leaflet-routing-machine": "^3.2.12",

这是我的地图组件！

import React,{ useState,useEffect,useRef } from 'react'
import { Map,Marker } from 'react-leaflet';
import LocateControl from '../LocateControl/LocateControl.jsx';
import MapBoxLayer from '../MapBoxLayer/MapBoxLayer.jsx';
import L from "leaflet";
import LCG from 'leaflet-control-geocoder';
import Routing from '../RoutingMachine/RoutingMachine.jsx'

export default function MyMap({getAddressFromLatLong,hillfinderFormButtonRef,setCurrentLocation,setCurrentDestination}) {
  var [zoom,setZoom] = useState(4);
  var [map,setMap] = useState(null);
  var [animate,setAnimate] = useState(false);
  var [draggable,setDraggable] = useState(true);
  var [markerData,setMarkerData] = useState([]);
  var [amountOfMarkers,setAmountOfMarkers] = useState(0);
  var [markerPointsForRouting,setMarkerPointsForRouting] = useState(null)
  var [mapCenter,setMapCenter] = useState(null)
  var [isMapInit,setIsMapInit] = useState(false)

  useEffect(() => {
    hillfinderFormButtonRef.current = clearMarkers;

    return() => {
     hillfinderFormButtonRef.current = null;
    }
  });

  useEffect(() => {
     if (map ){

      map.on('load',function (result) {
        setMapCenter(mapCenter=> result.sourceTarget._lastCenter)
      })

     }
  });

  useEffect(() => {
    if (markerData.length === 2){
      setMarkerPointsForRouting(markerData);
    }
  });

var greenIcon = new L.Icon({
  iconUrl: 'https://raw.githubusercontent.com/pointhi/leaflet-color-markers/master/img/marker-icon-2x-green.png',shadowUrl: 'https://cdnjs.cloudflare.com/ajax/libs/leaflet/0.7.7/images/marker-shadow.png',iconSize: [25,41],iconAnchor: [12,popupAnchor: [1,-34],shadowSize: [41,41]
});

var redIcon = new L.Icon({
  iconUrl: 'https://raw.githubusercontent.com/pointhi/leaflet-color-markers/master/img/marker-icon-2x-red.png',41]
});

function addMarker(e){
  // setShowMarkers(showMarkers => !showMarkers)
  var coords = e.latlng;
  if (amountOfMarkers < 2) {
    setAmountOfMarkers(amountOfMarkers => amountOfMarkers + 1)
    updateAddressFromMarker(amountOfMarkers,coords);
    setMarkerData(markerData => [...markerData,coords]);
  }
  else null;
}

function updateMarker(e){
  var markerLatLng = e.target.getLatLng(); //get marker LatLng
  var markerIndex = e.target.options.marker_index;
  updateAddressFromMarker(markerIndex,markerLatLng)

  setMarkerData(markerData => {
   markerData[markerIndex] = markerLatLng;
   return markerData;
  })
}

function updateAddressFromMarker(marker,latLng){
    var geocoder = new L.Control.geocoder();
     geocoder.options.geocoder.reverse(latLng,5,(address)=>{
      getAddressFromLatLong(marker,address[0].name)
    },null)
}

function clearMarkers(){
  setMarkerData(markerData => [],...markerData);
  setAmountOfMarkers(0);
  setCurrentLocation(''),setCurrentDestination('')
}

function toggleAnimate() {
  setAnimate(animate => !animate);
}

  var MAPBox_ACCESS_TOKEN = process.env.MAPBox_ACCESS_TOKEN;

  var locateOptions = {
    position: 'topright',strings: {
      title: 'Show me where I am,yo!'
    },onActivate: () => {} // callback before engine starts retrieving locations
  };

    var mapRef = useRef();

    useEffect(()=>{
      var {current = {}} = mapRef;
      var { leafletElement: map } = current;
      setIsMapInit(isMapInit=> !isMapInit)
      setMap(map);
    },[])

  return (
        <Map center={markerPointsForRouting} animate={animate} zoom={zoom} onClick={addMarker} ref={mapRef}>
        { markerData.map((element,index) => (
            <Marker
              key={index}
              marker_index={index}
              position={element}
              draggable={draggable}
              onDragend={updateMarker}
              icon={index === 0 ? greenIcon : redIcon}
            />
          ))}

          <MapBoxLayer
            accesstoken={MAPBox_ACCESS_TOKEN}
            style="mapBox://styles/mapBox/streets-v9"
          />
          <LocateControl options={locateOptions} startDirectly />

           {markerPointsForRouting && <Routing myMapRef={map} latLng={markerPointsForRouting} />}
        </Map>

  )
}

这是我的路由机器组件...

import { MapLayer } from "react-leaflet";
import L from "leaflet";
import "leaflet-routing-machine";
import { withLeaflet } from "react-leaflet";

class Routing extends MapLayer {
  createLeafletElement() {
    var { myMapRef,latLng } = this.props;

    var startingCoords = {
      lat: latLng[0].lat,lng: latLng[0].lng
    }

    console.log("startingCoords.lat ",startingCoords.lat);
    console.log("startingCoords.lng",startingCoords.lng);

    var endingCoords = {
      lat: latLng[0].lat,lng: latLng[1].lng
    }

    var leafletElement = new L.Routing.control({
    waypoints: [L.latLng(startingCoords.lat,startingCoords.lng),L.latLng(endingCoords.lat,endingCoords.lng)]
        }).addTo(myMapRef.leafletElement);
        return leafletElement.getPlan();
      }
    }

export default withLeaflet(Routing);

任何帮助将不胜感激！

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@）