React leaflet not rendering properly

Question

The react-leaflet map does not get rendered properly.

• The map is rendered outside of its parent's boundaries
• Some tiles of the map are missing

The problem occurs when using the map with standard react components.

My site also uses react-bootstrap. As I have read this may cause some potential problems to how react-leaflet gets rendered.

import React from 'react';
import ReactDOM from 'react-dom';
import { Map, Marker, Popup, TileLayer } from 'react-leaflet';

const position = [37.335556, -122.009167];

class MapView extends React.Component {
    render() {
        return (
                  <div
                    style={{
                        height:"100%"
                    }}>
                    <Map center={position} zoom={13}>
                        <TileLayer
                          url='http://{s}.tile.osm.org/{z}/{x}/{y}.png'
                          attribution='&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
                        />
                        <Marker position={position}>
                          <Popup>
                            <span>A pretty CSS3 popup.<br/>Easily customizable.</span>
                          </Popup>
                        </Marker>
                      </Map>
                  </div>
        );
    }
}

module.exports = MapView;

Answer 1

first at all, install via console:

> npm install leaflet 
> npm install react-leaflet

in the index.js import a css wich is living in node_modules

//src/index.js
    import 'leaflet/dist/leaflet.css'

so, now just put a margin and height:

    ////src/App.js 
return (
            <MapContainer center={position} zoom={3} scrollWheelZoom={false} 
        style={{ height:"`enter code here`400px",backgroundColor:"red",marginTop:"80px", marginBottom:'90px'
            }} >
        </MapContainer>
        )

or

   return (
        <>
          <Map style={{ width: "100%", height: "100vh" }} center={center} zoom={13}>
            </Map>
</> )

Answer 2

Also add these Leaflet's CSS and JS files into your project

<link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css" />
<script src="https://unpkg.com/[email protected]/dist/leaflet.js"></script>

Also add height to the map. it is mandatory.

Simple JsFiddle P.S. look into external resources.

Answer 3

The main problem was that the CSS was not being imported and height for the Map component was not set.

I then fixed a problem with the missing Marker image by using react-leaflet-marker-layer

import React from 'react';
import ReactDOM from 'react-dom';
import { Map, Marker, Popup, TileLayer } from 'react-leaflet';
import MarkerLayer from 'react-leaflet-marker-layer';

const position = { lng: -122.673447, lat: 45.522558 };
const markers = [
  {
    position: { lng: -122.67344700000, lat: 45.522558100000 },
    text: 'Voodoo Doughnut',
  },
  {
    position: { lng: -122.67814460000, lat: 45.5225512000000 },
    text: 'Bailey\'s Taproom',
  },
  {
    position: { lng: -122.67535700000002, lat: 45.5192743000000 },
    text: 'Barista'
  },
  {
    position: { lng: -122.65596570000001, lat: 45.5199148000001 },
    text: 'Base Camp Brewing'
  }
];

class ExampleMarkerComponent extends React.Component {

  render() {
    const style = {
      border: 'solid 1px lightblue',
      backgroundColor: '#333333',
      borderRadius: '50%',
      marginTop: '-5px',
      marginLeft: '-5px',
      width: '10px',
      height: '10px'
    };

    return (
      <div style={Object.assign({}, this.props.style, style)}></div>
    );
  }

}

class MapView extends React.Component {
    render() {
        return (
                  <div
                    style={{
                        height:"700px"
                    }}>
                    <Map center={position} zoom={13}
                        style={{
                            height:"700px"
                        }}>
                        <TileLayer
                          url='http://{s}.tile.osm.org/{z}/{x}/{y}.png'
                          attribution='&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
                        />
                        <MarkerLayer
                            markers={markers}
                            longitudeExtractor={m => m.position.lng}
                            latitudeExtractor={m => m.position.lat}
                            markerComponent={ExampleMarkerComponent} />
                      </Map>
                  </div>
        );
    }
}

module.exports = MapView;

Answer 4

You definitely not imported leaflet CSS file. Use this:

import 'leaflet/dist/leaflet.css'

Answer 5

Maybe you can try this, it for React.js or Next.js, right now it's working on react.js 18.

First i recommend to uninstall any leaflet library then install this one

npm i leaflet leaflet-defaulticon-compatibility leaflet-geosearch 

You can use this code:

import React, { useState, useEffect, useRef, useMemo, useCallback } from 'react'


const markerRef = useRef(null)
const eventHandlers = useMemo(
        () => ({
            dragend() {
                const marker = markerRef.current
                if (marker != null) {
                    // setPosition(marker.getLatLng())
                    console.log(marker.getLatLng())
                }
            },
        }),
        [],
    )
    useEffect(() => {
     // you will get the current position of the marker here
        console.log(markerRef.current)
    }, [markerRef.current])

//////////////////////
/// in the html

<MapContainer center={[40.8054, -74.0241]} zoom={14} scrollWheelZoom={false} style={{ height: "400px", width: "100%" }}>
    <TileLayer
    attribution='&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
    url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png" />
        <Marker
            eventHandlers={eventHandlers}
            position={[40.8054, -74.0241]}
            draggable={true}
            animate={true}
            ref={markerRef}
        >
       <Popup>
           Hey ! you found me
       </Popup>
   </Marker>
</MapContainer>

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