我最近在我的React Google Maps应用程序中添加了一个搜索栏,但是在从搜索栏中选择一个值时,Map不会重新渲染。我尝试在GoogleMap组件上设置一个键,但它不起作用。下面是我的应用程序代码:
import React, { useState} from 'react';
import { GoogleMap, LoadScript, Marker } from '@react-google-maps/api';
import usePlacesAutocomplete, { getGeocode, getLatLng } from 'use-places-autocomplete';
const MapContainer = () => {
const [map, setMap] = useState(null);
const [selectedPlace, setSelectedPlace] = useState(null);
const [mapKey, setMapKey] = useState(new Date().getTime()); // Add mapKey state
const containerStyle = {
width: '100%',
height: '400px',
};
const center = {
lat: 37.7749,
lng: -122.4194,
};
const onLoad = (map) => {
setMap(map);
};
const handleSelect = async (address) => {
try {
const results = await getGeocode({ address });
const { lat, lng } = await getLatLng(results[0]);
setSelectedPlace({ address, lat, lng });
setMapKey(new Date().getTime()); // Update mapKey state
} catch (error) {
console.error('Error:', error);
}
};
const handleLoadScriptError = (error) => {
console.error('Load Error:', error);
};
return (
<LoadScript googleMapsApiKey="YOUR_API_KEY" libraries={['places']} onError={handleLoadScriptError}>
<div style={containerStyle}>
<GoogleMap key={mapKey} mapContainerStyle={containerStyle} center={center} zoom={10} onLoad={onLoad}>
{selectedPlace && <Marker position={{ lat: selectedPlace.lat, lng: selectedPlace.lng }} />}
</GoogleMap>
<PlacesSearchBox onSelect={handleSelect} />
</div>
</LoadScript>
);
};
const PlacesSearchBox = ({ onSelect }) => {
const { ready, value, suggestions: { status, data }, setValue, clearSuggestions } = usePlacesAutocomplete();
const handleInputChange = (e) => {
setValue(e.target.value);
};
const handleSelect = (address) => {
setValue(address, false);
clearSuggestions();
onSelect(address);
};
return (
<div>
<input type="text" value={value} onChange={handleInputChange} placeholder="Search..." />
{status === 'OK' && (
<ul>
{data.map((suggestion, index) => (
<li key={index} onClick={() => handleSelect(suggestion.description)}>
{suggestion.description}
</li>
))}
</ul>
)}
</div>
);
};
export default MapContainer;
2条答案
按热度按时间omqzjyyz1#
我没有更新中心位置。在设置了选定的lat/lng值后,它开始工作。
1qczuiv02#
首先,key不是必需的,它也不会工作,因为组件似乎没有接收到prop。
https://github.com/JustFly1984/react-google-maps-api/blob/develop/packages/react-google-maps-api/src/GoogleMap.tsx
但它似乎接收到一个可能有用的
option
prop,并且该组件内部有一个钩子,它对该prop做出React,触发useEffect,并可能开始重新渲染Map(请参阅上面的文件)。