在 React 中使用 ArcGIS JavaScript SDK 构建地图应用
创建React工程
$ npx install -g create-react-app
$ create-react-app my-react-arcgis-app
$ cd my-react-arcgis-app
$ npm start
安装ArcGIS库
$ npm install @arcgis/core
创建ArcGIS地图组件
import React, { useEffect, useRef } from 'react';
import Map from '@arcgis/core/Map';
import MapView from '@arcgis/core/views/MapView';
import FeatureLayer from '@arcgis/core/layers/FeatureLayer';export default function MyMapViewer({}) {const mapRef = useRef();useEffect(() => {const map = new Map({basemap: 'streets-navigation-vector'});const view = new MapView({container: mapRef.current,map: map,center: [-79.940, 32.788],zoom: 16});const featureLayer = new FeatureLayer({url: 'https://services.arcgis.com/P3ePLMYs2RVChkJx/ArcGIS/rest/services/Charleston_Buildings_SLR_2080/FeatureServer/85',popupTemplate: {title: "{BuildingFID}",outFields: ["*"],content: "{BuildingFID}"},});map.add(featureLayer);return () => {if (view) {view.destroy()}};}, []);const mapStyle = {width: '100%',height: '100%',position: 'absolute',margin: 0,padding: 0,};return (<div className="map-container" ref={mapRef} style={mapStyle} />);
};
使用ArcGIS地图组件
修改App.js，内容如下：
import MyMapViewer from './MyMapViewer';
import './App.css';function App() {return (<div className="app"><h1>My ArcGIS App</h1><MyMapViewer /></div>);
}export default App;
修改App.css，在文件夹最后添加ArcGIS的css
@import 'https://js.arcgis.com/4.29/@arcgis/core/assets/esri/themes/light/main.css';