Map 组件

Map 组件是其他组件的基础，Map 组件会通过 Context 给所有的子组件提供 map，container 和 AMap，对象。

⚠️ 注意

> 1. 组件 <map> 必须包裹在 `` 组件内，该组件作用是加载高德地图 SDK。
> 2. 其他地图组件必须作为 <map> 的子组件使用； > 3. 在 v2.5.0+ -> v5 通过 props 传递 map，container 和 AMap 对象，在 v6 版本中移除了，通过 Context 传递对象

import { Map, APILoader } from '@uiw/react-amap';
// 或者单独安装使用
import { Map } from '@uiw/react-amap-map';

基本用法

Map 的父组件必须具有宽度和高度；

import React from 'react';
import ReactDOM from 'react-dom';
import { Map, APILoader } from '@uiw/react-amap';

const Demo = () => (
  <div style="{{">
    
      <map>
    </map>
  </div>
);

export default Demo

useMapContext

通过 React 的 Context 提供了一个无需为每层组件手动注入 map，container 和 AMap 三个属性 props，就能在组件树间进行传递。

import React, { useRef, useEffect } from 'react';
import ReactDOM from 'react-dom';
import { useMap, useMapContext, APILoader, Provider } from '@uiw/react-amap';

const Marker = () => {
  const warpper = useRef(null);
  const { map, state } = useMapContext();
  const { setContainer } = useMap({
    container: warpper.current,
    center: [116.397428, 39.90923],
    zoom: 10
  });

  useEffect(() => {
    if (map) {
      const marker = new AMap.Marker({
        icon: new AMap.Icon({
          imageSize: new AMap.Size(25, 34),
          image: '//a.amap.com/jsapi_demos/static/demo-center/icons/poi-marker-default.png'
        }),
        position: [116.405285,39.904989],
        offset: new AMap.Pixel(-13, -30)
      });
      // 创建点标记
      const marker1 = new AMap.Marker({
        position: new AMap.LngLat(116.32945,39.939772)
      });
      map.add(marker1);
      marker.setMap(state.map);
    }
  }, [map]);
  
  useEffect(() => {
    if (warpper.current) {
      setContainer(warpper.current);
    }
  }, [warpper.current]);

  return <div style="{{">;
}

const Demo = () =&gt; (
  
    
      
  
);

export default Demo

import { useMapContext, Provider } from '@uiw/react-amap';

const { AMaps, map, container, state, dispatch } = useMapContext();
// => state.AMaps
// => state.map
// => state.container

参数设置

import ReactDOM from 'react-dom';
import React, { Fragment, useState } from 'react';
import { Map, APILoader } from '@uiw/react-amap';

function Demo() {
  const [dragEnable, setDragEnable] = useState(true);
  const [display, setDisplay] = useState(true);
  const [zoom, setZoom] = useState(15);
  const [center, setCenter] = useState([116.397428, 39.90923]);
  const [viewMode, setViewMode] = useState('3D');
  return (
    
      <button> setDragEnable(!dragEnable)}&gt;{dragEnable ? '禁用' : '启用'}拖拽</button>
      <button> setDisplay(!display)}&gt;{display ? '卸载' : '加载'}地图</button>
      <button> setViewMode(viewMode === '3D' ? '2D' : '3D')}&gt;{viewMode}地图</button>
      <button> setZoom(zoom + 1)}&gt;放大 +1 -&gt; ({zoom})</button>
      <button> setZoom(zoom - 1)}&gt;缩小 -1 -&gt; ({zoom})</button>
      <button> setZoom(zoom - 1)}&gt;缩小 -1 -&gt; ({zoom})</button>
      <button> setCenter([121.394147,31.262488])}&gt;上海</button>
      <button> setCenter([116.397428, 39.90923])}&gt;北京</button>
      <div style="{{">
        {display &amp;&amp; (
          <map>
        )}
      </map></div>
    
  );
}

const Mount = () =&gt; (
  
    
  
);

export default Mount;

Ref

获取地图实例对象。

import ReactDOM from 'react-dom';
import React, { useEffect, useRef, Fragment } from 'react';
import { Map, APILoader } from '@uiw/react-amap';

function Demo() {
  const mapRef = useRef();
  useEffect(() => {
    console.log('mapRef:', mapRef)
  }, []);
  return (
    <div style="{{">
      <map> {
          if (instance &amp;&amp; instance.map) {
            const bounds = instance.map.getBounds();
            console.log('instance', instance);
          }
        }}
      /&gt;
      <map>
    </map></map></div>
  );
}

const Mount = () =&gt; (
  <div style="{{">
  
    
  
  </div>
);

export default Mount;

事件触发

import ReactDOM from 'react-dom';
import React from 'react';
import { Map, APILoader } from '@uiw/react-amap';

const Demo = () => (
  <div style="{{">
    
      <map> {
          console.log('地图加载完成！', data, de);
        }}
        onClick={() =&gt; {
          console.log('点击事件！');
        }}
      /&gt;
    </map>
  </div>
);

export default Demo

特殊使用方法

通过 Map 的子组件函数，返回三个对象 map，container 和 AMap，

import ReactDOM from 'react-dom';
import React, { useEffect, useRef, Fragment } from 'react';
import { Map, APILoader, ScaleControl, ToolBarControl, ControlBarControl, Geolocation } from '@uiw/react-amap';

const Demo = () => (
  <div style="{{">
    <map>
      {({ AMap, map, container }) =&gt; {
        console.log('map', map)
        if (map) {
          const marker = new AMap.Marker({
            icon: new AMap.Icon({
              imageSize: new AMap.Size(25, 34),
              image: '//a.amap.com/jsapi_demos/static/demo-center/icons/poi-marker-default.png'
            }),
            position: [116.405285,39.904989],
            offset: new AMap.Pixel(-13, -30)
          });
          marker.setMap(map);
        }
        return;
      }}
    </map>
  </div>
);

const Mount = () =&gt; (
  
    
  
);

export default Mount;

将子组件封装到一个组件中

import ReactDOM from 'react-dom';
import React, { useState, useRef } from 'react';
import { Map, APILoader, Polyline, ToolBarControl } from '@uiw/react-amap';

const path1 = [ [121.099109,31.222311], [118.528308,31.989555], [117.319812,31.803006], [114.353503,30.67583], [115.891589,28.979429], [112.947253,28.188361], ];
const path2 = [ [116.405289, 39.904987], [113.964458, 40.54664], [111.47836, 41.135964], [108.949297, 41.670904], [106.380111, 42.149509], [103.774185, 42.56996], [101.135432, 42.930601], [98.46826, 43.229964], [95.777529, 43.466798], [93.068486, 43.64009], [90.34669, 43.749086], [87.61792, 43.793308], ];

const ChildComp = (props = {}) => {
  return (
    <div>
      </div>
  )
}

const Demo = () =&gt; {
  const [show, setShow] = useState(true);
  return (
    <div style="{{">
      <map>
        {(props) =&gt; {
          return ;
        }}
      </map>
    </div>
  );
}

const Mount = () =&gt; (
  
    
  
);

export default Mount;

Props

更多参数设置

事件

事件类型文档