如何从google Map中的经度和纬度获取place_id？

Question

I can get place Id by using This Link . But problem is this is based on location search. I want to get place_id using draggeble marker so I can't use above link. I am moving the marker on Google Map, So how I can get place_id on Map.

Through marker.getPosition() we can get the latitude and longitude. So I want to know the place_id through latitude and longitude. How can I get, please tell me

latitude=marker.getPosition().lat();               
longitude=marker.getPosition().lng();

Answer 1

Use google.maps.Geocoder for Reverse Geocoding as explained here: https://developers.google.com/maps/documentation/javascript/examples/geocoding-reverse

You will recieve data containing results[1].place_id .

var geocoder = new google.maps.Geocoder;

latitude=marker.getPosition().lat();               
longitude=marker.getPosition().lng();
var latlng = {lat: parseFloat(latitude), lng: parseFloat(longitude)};

geocoder.geocode({'location': latlng}, function(results, status) {
    if (status === google.maps.GeocoderStatus.OK) {
      if (results[1]) {
        console.log(results[1].place_id);
      } else {
        window.alert('No results found');
      }
    } else {
      window.alert('Geocoder failed due to: ' + status);
    }
  });

Answer 2

You can either use the Geocoder API to send request, or simply send the HTTP request to the web service behind.

Your sample request:

https://maps.googleapis.com/maps/api/geocode/json?latlng= lat , lng &key= YOUR_API_KEY

You can then easily parse the JSON object by Javascript JSON.parse().

Answer 3

I got new way to solve this issue. Here I have used google http service to get total information of location based on longitude and latitude. You just need to pass latitude and longitude in url and your api key (ex : latlng=21.1497409, 79.08747970000002 & key=YOUR API KEY). Here is my get service in ExampleService Class

 getService(url) {

    return this.http.get(url).map((data: any) => data.json())

}

this you can put anywhere you want and just call below service from component where you need location data

this._exampleService.getService("https://maps.googleapis.com/maps/api/geocode/json?latlng=21.1497409, 79.08747970000002&key=YOUR API KEY").subscribe(getplaceData => {
            var placeDataDest: any;
            placeDataDest = getplaceData;
            console.log("i got place id yeee " + placeDataDest['results'][0]['place_id']);
            console.log("i got place details yeee " + placeDataDest['results']);
        });

hope you will find this useful