npm i react-google-maps react-google-autocomplete react-geocode
App.js
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import React, { Component } from "react"; import ReactDOM from "react-dom"; import Map from "./Map"; import "./styles.css"; class App extends Component { render() { return ( <Map google={this.props.google} center={{ lat: 40.7484, lng: -73.9857 }} height="300px" zoom={15} /> ); } } const rootElement = document.getElementById("root"); ReactDOM.render(<App />, rootElement); export default App |
Map.js
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import React, { Component } from "react"; import { withGoogleMap, GoogleMap, withScriptjs, InfoWindow, Marker } from "react-google-maps"; import Autocomplete from "react-google-autocomplete"; import Geocode from "react-geocode"; Geocode.setApiKey("AIzaSyBIl2qIEbPhKGA-ODVUmjtGlqF_k8VjWP0"); Geocode.enableDebug(); class Map extends Component { constructor(props) { super(props); this.state = { address: "", city: "", area: "", state: "", mapPosition: { lat: this.props.center.lat, lng: this.props.center.lng }, markerPosition: { lat: this.props.center.lat, lng: this.props.center.lng } }; } /** * Get the current address from the default map position and set those values in the state */ componentDidMount() { Geocode.fromLatLng( this.state.mapPosition.lat, this.state.mapPosition.lng ).then( response => { const address = response.results[0].formatted_address, addressArray = response.results[0].address_components, city = this.getCity(addressArray), area = this.getArea(addressArray), state = this.getState(addressArray); console.log("city", city, area, state); this.setState({ address: address ? address : "", area: area ? area : "", city: city ? city : "", state: state ? state : "" }); }, error => { console.error(error); } ); } /** * Component should only update ( meaning re-render ), when the user selects the address, or drags the pin * * @param nextProps * @param nextState * @return {boolean} */ shouldComponentUpdate(nextProps, nextState) { if ( this.state.markerPosition.lat !== this.props.center.lat || this.state.address !== nextState.address || this.state.city !== nextState.city || this.state.area !== nextState.area || this.state.state !== nextState.state ) { return true; } else if (this.props.center.lat === nextProps.center.lat) { return false; } } /** * Get the city and set the city input value to the one selected * * @param addressArray * @return {string} */ getCity = addressArray => { let city = ""; for (let i = 0; i < addressArray.length; i++) { if ( addressArray[i].types[0] && "administrative_area_level_2" === addressArray[i].types[0] ) { city = addressArray[i].long_name; return city; } } }; /** * Get the area and set the area input value to the one selected * * @param addressArray * @return {string} */ getArea = addressArray => { let area = ""; for (let i = 0; i < addressArray.length; i++) { if (addressArray[i].types[0]) { for (let j = 0; j < addressArray[i].types.length; j++) { if ( "sublocality_level_1" === addressArray[i].types[j] || "locality" === addressArray[i].types[j] ) { area = addressArray[i].long_name; return area; } } } } }; /** * Get the address and set the address input value to the one selected * * @param addressArray * @return {string} */ getState = addressArray => { let state = ""; for (let i = 0; i < addressArray.length; i++) { for (let i = 0; i < addressArray.length; i++) { if ( addressArray[i].types[0] && "administrative_area_level_1" === addressArray[i].types[0] ) { state = addressArray[i].long_name; return state; } } } }; /** * And function for city,state and address input * @param event */ onChange = event => { this.setState({ [event.target.name]: event.target.value }); }; /** * This Event triggers when the marker window is closed * * @param event */ onInfoWindowClose = event => {}; /** * When the user types an address in the search box * @param place */ onPlaceSelected = place => { const address = place.formatted_address, addressArray = place.address_components, city = this.getCity(addressArray), area = this.getArea(addressArray), state = this.getState(addressArray), latValue = place.geometry.location.lat(), lngValue = place.geometry.location.lng(); // Set these values in the state. this.setState({ address: address ? address : "", area: area ? area : "", city: city ? city : "", state: state ? state : "", markerPosition: { lat: latValue, lng: lngValue }, mapPosition: { lat: latValue, lng: lngValue } }); }; /** * When the marker is dragged you get the lat and long using the functions available from event object. * Use geocode to get the address, city, area and state from the lat and lng positions. * And then set those values in the state. * * @param event */ onMarkerDragEnd = event => { console.log("event", event); let newLat = event.latLng.lat(), newLng = event.latLng.lng(), addressArray = []; Geocode.fromLatLng(newLat, newLng).then( response => { const address = response.results[0].formatted_address, addressArray = response.results[0].address_components, city = this.getCity(addressArray), area = this.getArea(addressArray), state = this.getState(addressArray); this.setState({ address: address ? address : "", area: area ? area : "", city: city ? city : "", state: state ? state : "" }); }, error => { console.error(error); } ); }; render() { const AsyncMap = withScriptjs( withGoogleMap(props => ( <GoogleMap google={this.props.google} defaultZoom={this.props.zoom} defaultCenter={{ lat: this.state.mapPosition.lat, lng: this.state.mapPosition.lng }} > {/* For Auto complete Search Box */} <Autocomplete style={{ width: "100%", height: "40px", paddingLeft: "16px", marginTop: "2px", marginBottom: "100px" }} onPlaceSelected={this.onPlaceSelected} types={["(regions)"]} /> {/*Marker*/} <Marker google={this.props.google} name={"Dolores park"} draggable={true} onDragEnd={this.onMarkerDragEnd} position={{ lat: this.state.markerPosition.lat, lng: this.state.markerPosition.lng }} /> <Marker /> {/* InfoWindow on top of marker */} <InfoWindow onClose={this.onInfoWindowClose} position={{ lat: this.state.markerPosition.lat + 0.0018, lng: this.state.markerPosition.lng }} > <div> <span style={{ padding: 0, margin: 0 }}> {this.state.address} </span> </div> </InfoWindow> </GoogleMap> )) ); let map; if (this.props.center.lat !== undefined) { map = ( <div> <div> <div className="form-group"> <label htmlFor="">City</label> <input type="text" name="city" className="form-control" onChange={this.onChange} readOnly="readOnly" value={this.state.city} /> </div> <div className="form-group"> <label htmlFor="">Area</label> <input type="text" name="area" className="form-control" onChange={this.onChange} readOnly="readOnly" value={this.state.area} /> </div> <div className="form-group"> <label htmlFor="">State</label> <input type="text" name="state" className="form-control" onChange={this.onChange} readOnly="readOnly" value={this.state.state} /> </div> <div className="form-group"> <label htmlFor="">Address</label> <input type="text" name="address" className="form-control" onChange={this.onChange} readOnly="readOnly" value={this.state.address} /> </div> </div> <AsyncMap googleMapURL="https://maps.googleapis.com/maps/api/js?key=AIzaSyBIl2qIEbPhKGA-ODVUmjtGlqF_k8VjWP0&libraries=places" loadingElement={<div style={{ height: `100%` }} />} containerElement={<div style={{ height: this.props.height }} />} mapElement={<div style={{ height: `100%` }} />} /> </div> ); } else { map = <div style={{ height: this.props.height }} />; } return map; } } export default Map; |
