我是 react 初学者,我正在尝试使用 circle() 和 fitbounds() 让我的所有标记都显示在屏幕上。现在只有第一个标记显示在屏幕上,但是当我缩小时,我可以看到其余的。但是,我希望在运行应用程序时显示所有标记。帮助会很大!我尝试使用 / global google / 然后声明一个 const bounds 存储 google.maps.latLngBounds() 但它给了我一个参考错误,说 google 没有定义。我创建了一个 const 将 google 窗口化,但错误仍然存在。由于我对反应知之甚少,因此我不确定我哪里出错了。
此外,当我删除我的 API 密钥时,该代码片段需要在 url 中运行一个 API_KEY。
/*global google*/
//Declaring the imports
import React, { Component } from 'react';
import { withScriptjs, withGoogleMap, GoogleMap, Marker } from "react-
google-maps";`enter code here`
import { Circle } from "react-google-maps";
//The bounds give me a google not defined error
//const google = window.google;
//const bounds = new google.maps.LatLngBounds();
const MyMapComponent = withScriptjs(withGoogleMap((props) =>
//Creating the GoogleMap instance tag that takes a default zoom and uses only one center
<GoogleMap
defaultZoom={13}
center={{ lat: 35.8592, lng: -78.5921 }}
>
{}
{props.isMarkerShown &&
props.markers.map((marker, index) => {
//MarkerOptions
return (
<Marker
position={marker}
title="Click to zoom"
label={"" + ((index + 1))}
onClick={props.onMarkerClick}
/>
)
})
}
</GoogleMap>
))
const numbers = [1, 2, 3, 4, 5];
const listItems = numbers.map((number) =>
<li>{number}</li>
)
//The three markers being placed
const storeLocations = [
{ "lat": 35.8592, "lng": -78.5921 },
{ "lat": 35.8964, "lng": -78.5734 },
{ "lat": 35.8794, "lng": -78.5693 }
]
export default class MapComponent extends Component {
state = {
isMarkerShown: false,
selectedMarkerNumber: 0
}
componentDidMount() {
this.setState({ isMarkerShown: true })
}
delayedShowMarker = () => {
setTimeout(() => {
this.setState({ isMarkerShown: true })
}, 3000)
}
animatePin() {
const min = 1;
const max = 4;
const rand = min + Math.floor(Math.random() * (max - min));
console.log("rand" + rand)
this.setState({
selectedMarkerNumber: rand
})
}
//Render function
render() {
return (
<div>
<MyMapComponent
isMarkerShown={this.state.isMarkerShown}
googleMapURL="https://maps.googleapis.com/maps/api/js?key=<API_KEY>&v=3.exp&libraries=geometry,drawing,places"
loadingElement={<div style={{ height: `100%` }} />}
containerElement={<div style={{ height: `250px` }} />}
mapElement={<div style={{ height: `100%` }} />}
onMarkerClick={this.handleMarkerClick}
markers={storeLocations}
/>
<div className="item" color="green" onClick={() => this.animatePin()}>
<ul>{listItems}</ul>
</div>
</div>
)
}
}