我有一个 Reactjs 应用程序,我在其中使用 google-map-react 库生成地图。我在从通过浏览器获得的地理位置集中地图时遇到问题。加载页面时,地图的中心位置与我的位置不同。
我有以下代码:
state = {
lat: 40,
long: 80,
zoom: 10,
}
componentDidMount() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(this.showPosition, this.posError);
} else {
alert("Sorry, Geolocation is not supported by this browser.");
}
}
posError = () => {
if (navigator.permissions) {
navigator.permissions.query({ name: 'geolocation' }).then(res => {
if (res.state === 'denied') {
alert('Enable location permissions for this website in your browser settings.')
}
})
} else {
alert('Unable to access your location. You can continue by submitting location manually.')
}
}
showPosition = async (position) => {
let lat = position.coords.latitude
let long = position.coords.longitude
//console.log(lat);
//console.log(long);
this.setState({ lat: lat });
this.setState({ long: long });
}
render() {
const {
lat,
long,
zoom,
} = this.state;
return (
<>
<div className="row">
<div className="col-xl-12 col-md-6 mb-4">
<div style={{ height: '600px' }}>
<GoogleMapReact
bootstrapURLKeys={{ key: 'API_KEY' }}
defaultCenter={{ lat: lat, lng: long }}
defaultZoom={zoom}
>
</GoogleMapReact>
</div>
</div>
</div>
</>
)
}
纬度和经度数据被正确接收,但是我上面提到的问题正在发生。我尝试在navigator.geolocation.getCurrentPosition的await方法中使用async(componentDidMount),但没有成功。