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@sashathor/expo-leaflet

v1.0.4

Published

A React Native component that uses a WebView to provide a Leaflet map.

Downloads

1

Readme

expo-leaflet

A Leaflet map component with no native code

Installation

expo install expo-asset expo-file-system react-native-webview

If you want web support you also need to

npm install --save react-measure

Then:

npm install --save expo-leaflet

Usage

and import like so

import { ExpoLeaflet } from "expo-leaflet";

Example Marker

let marker = {
  id: '1',
  coords: { lat: 36.00, lng: -76.00 },
  icon: "<div>❤️</div>",
  size: [24, 24]
}

After loading, the map expects to receive an array of map layer information objects. A sample object showing a MapBox tile layer is shown below.

let mapLayer = {
  baseLayerName: 'OpenStreetMap',  // This will be seen in the layer selection control
  baseLayerIsChecked: 'true',  // If the layer is selected in the layer selection control
  layerType: 'TileLayer', 
  baseLayer: true,
  url: `https://api.tiles.mapbox.com/v4/mapbox.streets/{z}/{x}/{y}.png?access_token=${mapboxToken}`,
  attribution:
    '&amp;copy <a href=&quot;http://osm.org/copyright&quot;>OpenStreetMap</a> contributors'
}

Creating Map Markers

let marker = {
  id: '1', // The ID attached to the marker. It will be returned when onMarkerClicked is called
  position: {
    lat: 52.1,
    lng: 2.3,
  },
  // HTML element that will be displayed as the marker.  It can also be text or an SVG string.
  icon: '<span>🍇</span>',
  size: [32, 32],
}

Adding Leaflet Geometry Layers to the Map

A geometry layer can be added to the may by following the example below:

let mapShapes = [
  {
    shapeType: 'Circle',
    color: "#123123",
    id: "1",
    center: { lat: 34.225727, lng: -77.94471 },
    radius: 2000
  }
]

LICENSE

MIT