【发布时间】:2018-12-28 01:33:12
【问题描述】:
有没有办法使用来自react-leaflet 的矢量图块?
我知道Leaflet.VectorGrid,但它不是为 react-leaflet 编写的?
【问题讨论】:
标签: react-leaflet
有没有办法使用来自react-leaflet 的矢量图块?
我知道Leaflet.VectorGrid,但它不是为 react-leaflet 编写的?
【问题讨论】:
标签: react-leaflet
对于react-leaflet v2,导出用HOC withLeaflet() 包裹的MapBoxGLLayer 组件以使其工作。
步骤:
1.安装mapbox-gl-leaflet。
npm i mapbox-gl-leaflet
2.添加mapbox-gl js和css到index.html
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.51.0/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.51.0/mapbox-gl.css' rel='stylesheet' />
3.添加这个组件。
import L from "leaflet";
import {} from "mapbox-gl-leaflet";
import PropTypes from "prop-types";
import { GridLayer, withLeaflet } from "react-leaflet";
class MapBoxGLLayer extends GridLayer {
createLeafletElement(props) {
return L.mapboxGL(props);
}
}
/*
* Props are the options supported by Mapbox Map object
* Find options here:https://www.mapbox.com/mapbox-gl-js/api/#new-mapboxgl-map-options-
*/
MapBoxGLLayer.propTypes = {
accessToken: PropTypes.string.isRequired,
style: PropTypes.string
};
MapBoxGLLayer.defaultProps = {
style: "mapbox://styles/mapbox/streets-v9"
};
export default withLeaflet(MapBoxGLLayer);
4.使用MapBoxGLLayer 组件。
class App extends Component {
state = {
center: [51.505, -0.091],
zoom: 13
};
render() {
return (
<div>
<Map center={this.state.center} zoom={this.state.zoom}>
<MapBoxGLLayer
accessToken={MAPBOX_ACCESS_TOKEN}
style="mapbox://styles/mapbox/streets-v9"
/>
</Map>
</div>
);
}
}
在此处找到工作代码(添加您自己的 mapbox 令牌):https://codesandbox.io/s/ooypokn26y
【讨论】:
L.mapboxGL() 函数由mapbox-gl-leaflet 提供。这个库将该函数添加到全局变量L。你可以看这里:github.com/mapbox/mapbox-gl-leaflet/blob/…
react-leaflet issue 中有一些非常好的矢量图块示例(下面转载了 mapbox-gl 示例)。
// @flow
import L from 'leaflet'
import {} from 'mapbox-gl-leaflet'
import {PropTypes} from 'react'
import { GridLayer } from 'react-leaflet'
export default class MapBoxGLLayer extends GridLayer {
static propTypes = {
opacity: PropTypes.number,
accessToken: PropTypes.string.isRequired,
style: PropTypes.string,
zIndex: PropTypes.number,
}
createLeafletElement(props: Object): Object {
return L.mapboxGL(props)
}
}
以及上述组件的用法:
<Map>
<MapBoxGLLayer
url={url}
accessToken={MAPBOX_ACCESS_TOKEN}
style='https://style.example.com/style.json'
/>
</Map>
注意:您可能还需要 npm install mapbox-gl 并导入该库并分配给全局 window.mapboxgl = mapboxgl 以避免 mapboxgl 未定义的问题。
【讨论】:
Cannot read property 'layerContainer' of undefined。所以消息说:无法读取 MapBoxGLLayer.get (MapLayer.js:77) 处未定义的属性 'layerContainer'。有什么建议吗?
您可以通过扩展 MapLayer 组件来创建custom component。您可以在我贡献给 here 的项目中看到如何在 react-leaflet 1.0 中完成此操作的示例。
【讨论】: