如何使用Google Maps API v3获取客户位置？

Question

How do you get Client location using Google Maps API v3? I tried the following code but kept getting the "google.loader.ClientLocation is null or not an object" error. Any ideas why ??

if (google.loader.ClientLocation) {
            alert(google.loader.ClientLocation.latitude+" "+google.loader.ClientLocation.longitude);
        }

Thank You

Answer 1

试试这个 :)

    <script type="text/javascript" src="http://www.google.com/jsapi"></script>
    <script type="text/javascript">
    function initialize() {
        var loc = {};
        var geocoder = new google.maps.Geocoder();
        if(google.loader.ClientLocation) {
            loc.lat = google.loader.ClientLocation.latitude;
            loc.lng = google.loader.ClientLocation.longitude;

            var latlng = new google.maps.LatLng(loc.lat, loc.lng);
            geocoder.geocode({'latLng': latlng}, function(results, status) {
                if(status == google.maps.GeocoderStatus.OK) {
                    alert(results[0]['formatted_address']);
                };
            });
        }
    }

    google.load("maps", "3.x", {other_params: "sensor=false", callback:initialize});

    </script>

Answer 2

有点晚了,但我有类似的东西,我正忙着建立,这里是获取当前位置的代码 - 一定要使用本地服务器进行测试.

包括CDN的相关脚本:

    <script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&signed_in=true&callback=initMap">

HTML

<div id="map"></div>

CSS

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}
#map {
    height: 100%;
}

JS

var map = new google.maps.Map(document.getElementById('map'), {
    center: {lat: -34.397, lng: 150.644},
    zoom: 6
});
var infoWindow = new google.maps.InfoWindow({map: map});

// Try HTML5 geolocation.
if (navigator.geolocation) {
    navigator.geolocation.getCurrentPosition(function(position) {
        var pos = {
            lat: position.coords.latitude,
            lng: position.coords.longitude
        };

        infoWindow.setPosition(pos);
        infoWindow.setContent('Location found.');
        map.setCenter(pos);
    }, function() {
        handleLocationError(true, infoWindow, map.getCenter());
    });
} else {
    // Browser doesn't support Geolocation
    handleLocationError(false, infoWindow, map.getCenter());
}

function handleLocationError(browserHasGeolocation, infoWindow, pos) {
    infoWindow.setPosition(pos);
    infoWindow.setContent(browserHasGeolocation ?
                          'Error: The Geolocation service failed.' :
                          'Error: Your browser doesn\'t support geolocation.');
}

DEMO

https://jsfiddle.net/ToreanJoel/4ythpy02/

Answer 3

我无法获得上述代码.

谷歌在这里做了很好的解释:http: //code.google.com/apis/maps/documentation/javascript/basics.html#DetectingUserLocation

他们首先使用W3C Geolocation方法,然后为旧浏览器提供Google.gears后备方法.

这个例子在这里:

http://code.google.com/apis/maps/documentation/javascript/examples/map-geolocation.html