Marker 点标注组件

表示地图上一个图像标注。

import { Marker, useMarker } from '@uiw/react-baidu-map';
// 或者单独安装使用
import Marker, { useMarker } from '@uiw/react-baidu-map-marker';

🚧 注意：需要使用到 ``，新的封装 Marker 组建使用了 Context 来避免 map 对象传来传去。

基本用法

import React from 'react';
import { Map, Provider, Marker, APILoader } from '@uiw/react-baidu-map';

const Demo = () => {
  function markerRef(props) {
    if (props && props.marker) {
      console.log('marker::', props.marker, props.map, props.BMap);
    }
  }
  return (
    <div style="{{">
      
        
          <map style="{{">
            </map>
        
      
    </div>
  );
};

export default Demo;

自定义标点

import React from 'react';
import { useState } from 'react';
import { Map, Provider, Marker, APILoader } from '@uiw/react-baidu-map';
const CustomIcon = () => {
  const [position, setPosition] = useState({ lng: 121.466008, lat: 31.220001 });
  const icon = new BMap.Icon('https://developer.baidu.com/map/jsdemo/img/fox.gif', new BMap.Size(300, 157));
  return (
    <>
      <button> setPosition({lng: 121.545202, lat: 31.246679})}&gt;设置 position</button>
      <map style="{{">
        </map>
    
  );
}

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

export default Demo;

添加事件

import React from 'react';
import { useState } from 'react';
import { Map, Provider, Marker, APILoader } from '@uiw/react-baidu-map';

const CustomIcon = () => {
  const [count, setCount] = useState(0)
  const [message, setMessage] = useState('请点击标注点，小箭头!')
  const [addEvent, setAddEvent] = useState(false);
  const icon = new BMap.Icon('https://developer.baidu.com/map/jsdemo/img/fox.gif', new BMap.Size(300, 157));
  function clickHandle({ type, target}) {
    console.log('~~~~~clickHandle~~~~~', type, target);
    setMessage('啊哈哈！你真的点击了！');
    setCount(count + 1);
  }
  return (
    <>
      <div>{message} {count}</div>
      <map>
        </map>
    
  );
}

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

export default Demo;

可拖拽

import React from 'react';
import { useState } from 'react';
import { Map, Provider, Marker, APILoader } from '@uiw/react-baidu-map';

const CustomIcon = () => {
  const [enableDragging, setEnableDragging] = useState(true);
  const [postion, setPostion] = useState();
  const [isAddEvent, setIsAddEvent] = useState(false);
  const iconfox = new BMap.Icon('https://developer.baidu.com/map/jsdemo/img/fox.gif', new BMap.Size(300, 157));
  const iconfox1 = new BMap.Icon('https://api0.map.bdimg.com/images/copyright_logo.png', new BMap.Size(300, 157));
  const [icon, setIcon] = useState(iconfox);
  function markerRef(props) {
    if (props && props.marker && !isAddEvent) {
      setIsAddEvent(true)
      props.marker.removeEventListener('dragend', dragendHandle);
      props.marker.addEventListener('dragend', dragendHandle);
    }
  }
  function dragendHandle({ type, target, pixel, point }) {
    console.log('dragendHandle', type, target, pixel, point);
    setPostion(JSON.stringify(point));
  }
  return (
    <>
      <button> setEnableDragging(!enableDragging)}&gt;{enableDragging ? '禁用拖拽' : '启用拖拽'}</button>
      <button> setIcon(iconfox1)}&gt;设置icon</button>
      <button> setIcon(iconfox)}&gt;设置icon</button>
      {postion &amp;&amp; <span>{postion}</span>}
      <map>
        </map>
    
  );
}

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

export default Demo;

矢量图标

百度地图官方实例。

import React from 'react';
import { useState } from 'react';
import { Map, Provider, Marker, APILoader } from '@uiw/react-baidu-map';

const CustomIcon = () => {
  const [visiable, setVisiable] = useState(true);
  const icon = new BMap.Symbol('m0.5,48.67105l106.55963,0m-53.03642,45.73853l52.06349,51.09042m-52.06349,-51.57716l-48.65731,51.57716m48.41391,-112.39955l0,60.82238m16.17517,-77.24814c0,8.93415 -7.24208,16.17461 -16.17517,16.17461c-8.93307,0 -16.17464,-7.24046 -16.17464,-16.17461c0,-8.93309 7.24156,-16.1747 16.17464,-16.1747c8.93309,0 16.17517,7.24161 16.17517,16.1747z', {
    rotation: 0, // 顺时针旋转40度
    fillColor: 'green',
    fillOpacity: 0.8,
    strokeColor: '#555',
    strokeWeight: 3 // 线宽
  });
  const iconForwardClosedArrow = new BMap.Symbol(BMap_Symbol_SHAPE_FORWARD_CLOSED_ARROW, {
    scale: 5,
    strokeWeight: 1,
    rotation: 0, // 顺时针旋转30度
    fillColor: 'red',
    fillOpacity: 0.8
  });
  const iconBackwardClosedArrow = new BMap.Symbol(BMap_Symbol_SHAPE_BACKWARD_CLOSED_ARROW, {
    scale: 5,
    strokeWeight: 1,
    rotation: 180,
    fillColor: 'gold',
    fillOpacity: 0.8
  });
  const iconShapePoint = new BMap.Symbol(BMap_Symbol_SHAPE_POINT, {
    scale: 2, // 图标缩放大小
    fillColor: "orange", // 填充颜色
    fillOpacity: 0.8, // 填充透明度
  });
  return (
    <>
      <button> setVisiable(!visiable)}&gt;{visiable ? '隐藏' : '显示'}</button>
      <map>
        </map>
    
  );
}

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

export default Demo;

使用 hooks

marker, setMarker, type, setType

import React from 'react';
import { useRef, useEffect, useState } from 'react';
import { Provider, APILoader, useMap, useMarker } from '@uiw/react-baidu-map';

const Example = () => {
  const divElm = useRef(null);
  const { setContainer, map } = useMap({ widget: ['GeolocationControl', 'NavigationControl'], zoom: 8 });
  const { setType, marker } = useMarker({ map, position: { lng: 121.444017, lat: 31.237787 } });
  useEffect(() => {
    if (divElm.current && !map) {
      setContainer(divElm.current);
    }
  });
  return (
    <>
      <button> setType('red2')}&gt;设置 red2</button>
      <button> setType('loc_blue')}&gt;设置 loc_blue</button>
      <button> marker.setPosition(new BMap.Point(121.497197, 31.232847))}&gt;设置坐标点</button>
      <button> marker.setAnimation(2)}&gt;设置动画</button>
      <button> marker.setAnimation(null)}&gt;取消动画</button>
      <div style="{{">
    
  )
}

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

export default Demo;

Props

事件

ShapeType