这在计算机上运行得很好,但我只是尝试在移动设备上测试它,没有一个onChildMouse事件处理程序被识别。我尝试过寻找其他的事件处理程序,但是我在这个包中只看到了onChildMouseXXX。怎样才能使可拖动的标记起作用?有没有其他我可以使用的事件,或者解决这个问题的已知方法?
import React from "react"
import PropTypes from "prop-types"
import GoogleMapReact from 'google-map-react';
const Marker = () => <div className="markerCircle"></div>;
class DraggableMap extends React.Component {
constructor(props) {
super(props);
this.state = {
center: {
lat: 0,
lng: 0
},
zoom: 11,
lat: 0,
lng: 0,
draggable: true,
loaded: false
}
this.onChildMouseMove = this.onChildMouseMove.bind(this)
this.onChildMouseUp = this.onChildMouseUp.bind(this)
this.onChildMouseDown = this.onChildMouseDown.bind(this)
}
componentDidMount() {
this.setState({
center: {
lat: this.props.lat,
lng: this.props.lng,
},
lat: this.props.lat,
lng: this.props.lng,
loaded: true
})
}
componentDidUpdate() {
if(this.props.lat != this.state.lat) {
this.setState({
center: {
lat: this.props.lat,
lng: this.props.lng,
},
lat: this.props.lat,
lng: this.props.lng,
loaded: true
})
}
}
onChildMouseDown(){
console.log('mouse down')
// set map no draggable
this.setState({
draggable: false,
});
}
onChildMouseUp(){
console.log('mouse up')
//set map draggable again
this.setState({
draggable: true,
});
}
onChildMouseMove(hoverKey, childProps, mouse){
console.log('move mouse')
// Change item data with new coordinates
// you need set here own store and update function
this.setState({
lat: mouse.lat,
lng: mouse.lng
}, () => this.props.updateLatLng(this.state.lat, this.state.lng))
}
render() {
if(!this.state.loaded) {
return null
}
return (
// Important! Always set the container height explicitly
<div style={{ height: '100%', width: '100%' }}>
<GoogleMapReact
bootstrapURLKeys={{ key: 'yesItIsMyRealKeyHere' }}
defaultCenter={this.state.center}
center={{lat: this.state.lat, lng: this.state.lng}}
defaultZoom={this.state.zoom}
draggable={this.state.draggable}
onChildMouseDown={() => this.onChildMouseDown()}
onChildMouseUp={() => this.onChildMouseUp()}
onChildMouseMove={(key, childProps, mouse) => this.onChildMouseMove(key, childProps, mouse)}
>
<Marker
key={'id'}
item={'n'}
lat={this.state.lat}
lng={this.state.lng}
/>
</GoogleMapReact>
</div>
);
}
}
export default DraggableMap;发布于 2020-11-25 07:14:51
我也可以在我这一端复制你的问题。我使用了你的代码,'onChildMouse‘功能在电脑上运行,但使用我手机上的浏览器,我不能拖动标记,我创建的警报也没有触发。
我有一种不同的方式来使用google-map-react制作可拖动的标记/圆。我使用<GoogleMapReact >( Google -map-onGoogleApiLoaded and yesIWantToUseGoogleMapApiInternals )的反应参数来访问Google Maps对象。然后,我将其传递给使用Google Maps对象创建marker或circle的函数,然后将每个对象的draggable参数设置为true。我测试了一下,它可以在手机的浏览器中使用。
下面是一个sample code和代码片段:
import React, { Component } from "react";
import GoogleMapReact from "google-map-react";
class GoogleMaps extends Component {
loadMap = (map, maps) => {
const cityCircle = new google.maps.Circle({
strokeColor: "#FF0000",
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: "#FF0000",
fillOpacity: 0.35,
map,
center: { lat: 40.756795, lng: -73.954298 },
radius: 10000,
draggable: true
});
let marker = new maps.Marker({
position: { lat: 40.856795, lng: -73.954298 },
map,
draggable:true,
});
};
render() {
return (
<div style={{ height: "400px", width: "100%" }}>
<GoogleMapReact
bootstrapURLKeys={{ key: "YOUR_API_KEY_HERE" }}
defaultCenter={{ lat: 40.756795, lng: -73.954298 }}
defaultZoom={10}
yesIWantToUseGoogleMapApiInternals
onGoogleApiLoaded={({ map, maps }) => this.loadMap(map, maps)}
/>
</div>
);
}
}
export default GoogleMaps;https://stackoverflow.com/questions/64877989
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