React使用高德地图的实现示例(react-amap)
pc版React重构,使用到了高德地图。搜了资料,发现有一个针对React进行封装的地图插件react-amap。官方网址:https://elemefe.github.io/react-amap/components/map,有兴趣的可以看下里面的API。
react-amap 安装
1、使用npm进行安装,目前是1.2.8版本:
cnpm i react-amap
2、直接使用sdn方式引入
<script src="https://unpkg.com/react-amap@0.2.5/dist/react-amap.min.js"></script>
react-amap 使用
import React,{Component} from 'react' import {Map,Marker} from 'react-amap' const mapKey = '1234567809843asadasd' //需要自己去高德官网上去申请 class Address extends Component { constructor (props) { super (props) this.state = { } } render(){ return ( <div style={{width: '100%', height: '400px'}}> <Map amapkey={mapKey} zoom={15}></Map> </div> ) } } export default Address
这样的话,就会初始化一个简单的地图。
实际开发过程中,你会有比较复杂的使用场景。比如需要标记点、对地图进行缩放、能够定位到当前位置、位置搜索等等功能。需求大致如下图所示:
这样的话,那就需要引入插件以及组件的概念了。
ToolBar、Scale插件
<Map plugins={["ToolBar", 'Scale']}></Map>
Marker 地图标记
<Map> <Marker position={['lng','lat']}></Marker> </Map>
InfoWindow 窗体组件
<Map> <InfoWindow position={this.state.position} visible={this.state.visible} isCustom={false} content={html} size={this.state.size} offset={this.state.offset} events={this.windowEvents} /> </Map>
通过 created 事件实现更高级的使用需求,在高德原生实例创建成功后调用,参数就是创建的实例;获取到实例之后,就可以根据高德原生的方法对实例进行操作:
const events = { created: (instance) => { console.log(instance.getZoom())}, click: () => { console.log('You clicked map') } } <Map events={events} />
实现一个较为复杂地址搜索,地址标记、逆地理解析代码:
import React , { Component } from 'react' import { Modal , Input } from 'antd' import styles from './index.scss' import classname from 'classnames' import { Map ,Marker,InfoWindow} from 'react-amap' import marker from 'SRC/statics/images/signin/marker2.png' const mapKey = '42c177c66c03437400aa9560dad5451e' class Address extends Component { constructor (props) { super(props) this.state = { signAddrList:{ name:'', addr:'', longitude: 0, latitude: 0 }, geocoder:'', searchContent:'', isChose:false } } //改变数据通用方法(单层) changeData = (value, key) => { let { signAddrList } = this.state signAddrList[key] = value this.setState({ signAddrList:signAddrList }) } placeSearch = (e) => { this.setState({searchContent:e}) } searchPlace = (e) => { console.log(1234,e) } componentDidMount() { } render() { let { changeModal , saveAddressDetail } = this.props let { signAddrList } = this.state const selectAddress = { created:(e) => { let auto let geocoder window.AMap.plugin('AMap.Autocomplete',() => { auto = new window.AMap.Autocomplete({input:'tipinput'}); }) window.AMap.plugin(["AMap.Geocoder"],function(){ geocoder= new AMap.Geocoder({ radius:1000, //以已知坐标为中心点,radius为半径,返回范围内兴趣点和道路信息 extensions: "all"//返回地址描述以及附近兴趣点和道路信息,默认"base" }); }); window.AMap.plugin('AMap.PlaceSearch',() => { let place = new window.AMap.PlaceSearch({}) let _this = this window.AMap.event.addListener(auto,"select",(e) => { place.search(e.poi.name) geocoder.getAddress(e.poi.location,function (status,result) { if (status === 'complete'&&result.regeocode) { let address = result.regeocode.formattedAddress; let data = result.regeocode.addressComponent let name = data.township +data.street + data.streetNumber _this.changeData(address,'addr') _this.changeData(name,'name') _this.changeData(e.poi.location.lng,'longitude') _this.changeData(e.poi.location.lat,'latitude') _this.setState({isChose:true}) } }) }) }) }, click:(e) => { const _this = this var geocoder var infoWindow var lnglatXY=new AMap.LngLat(e.lnglat.lng,e.lnglat.lat); let content = '<div>定位中....</div>' window.AMap.plugin(["AMap.Geocoder"],function(){ geocoder= new AMap.Geocoder({ radius:1000, //以已知坐标为中心点,radius为半径,返回范围内兴趣点和道路信息 extensions: "all"//返回地址描述以及附近兴趣点和道路信息,默认"base" }); geocoder.getAddress(e.lnglat,function (status,result) { if (status === 'complete'&&result.regeocode) { let address = result.regeocode.formattedAddress; let data = result.regeocode.addressComponent let name = data.township +data.street + data.streetNumber _this.changeData(address,'addr') _this.changeData(name,'name') _this.changeData(e.lnglat.lng,'longitude') _this.changeData(e.lnglat.lat,'latitude') _this.setState({isChose:true}) } }) }); } } return ( <div> <Modal visible={true} title="办公地点" centered={true} onCancel={() => changeModal('addressStatus',0)} onOk={() => saveAddressDetail(signAddrList)} width={700}> <div className={styles.serach}> <input id="tipinput" className={styles.searchContent} onChange={(e) => this.placeSearch(e.target.value)} onKeyDown={(e) => this.searchPlace(e)} /> <i className={classname(styles.serachIcon,"iconfont icon-weibiaoti106")}></i> </div> <div className={styles.mapContainer} id="content" > { this.state.isChose ? <Map amapkey={mapKey} plugins={["ToolBar", 'Scale']} events={selectAddress} center={ [ signAddrList.longitude,signAddrList.latitude] } zoom={15}> <Marker position={[ signAddrList.longitude,signAddrList.latitude]}/> </Map> : <Map amapkey={mapKey} plugins={["ToolBar", 'Scale']} events={selectAddress} zoom={15}> <Marker position={[ signAddrList.longitude,signAddrList.latitude]}/> </Map> } </div> <div className="mar-t-20">详细地址: <span className="cor-dark mar-l-10">{signAddrList.addr}</span> </div> </Modal> </div> ) } } export default Address
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