用java脚本将用户位置与谷歌地图同步



是否可以使用地理位置同步用户位置?,这样,如果用户正在旅行,他的位置将在页面上更新,有些人喜欢导航他的位置。。。

我试过这个,但是,整个地图不断刷新,需要时间加载。。。它工作得很好,但是,有没有更好的方法可以跟踪用户的位置?

    <script src="https://maps.googleapis.com/maps/api/js"></script>
    <script src="../dist/geolocationmarker-compiled.js"></script>
    <script>
        var map, GeoMarker;
        setInterval (function initialize() {
            var mapOptions = {
                zoom: 17,
                center: new google.maps.LatLng(-34.397, 150.644),
                mapTypeId: google.maps.MapTypeId.ROADMAP
            };
            map = new google.maps.Map(document.getElementById('map_canvas'),
            mapOptions);
            GeoMarker = new GeolocationMarker();
            GeoMarker.setCircleOptions({fillColor: '#808080'});
            google.maps.event.addListenerOnce(GeoMarker, 'position_changed',     function() {
                map.setCenter(this.getPosition());
                map.fitBounds(this.getBounds());
            });
            google.maps.event.addListener(GeoMarker, 'geolocation_error', function(e) {
                alert('There was an error obtaining your position. Message: ' + e.message);
            });
            console.log('updating');
            GeoMarker.setMap(map);
        },10000);
    google.maps.event.addDomListener(window, 'load', initialize);
    if(!navigator.geolocation) {
        alert('Your browser does not support geolocation');
    }
</script>
<body>
    <div id="map_canvas"></div>
</body>

当位置发生变化时,不要重新创建地图,只需更新标记在地图上的位置。

var map, GeoMarker;
function initialize() {
            var mapOptions = {
                zoom: 17,
                center: new google.maps.LatLng(-34.397, 150.644),
                mapTypeId: google.maps.MapTypeId.ROADMAP
            };
            map = new google.maps.Map(document.getElementById('map_canvas'),
            mapOptions);
}
setInterval (function() {
    if (!GeoMarker) {
      GeoMarker = new GeolocationMarker();
    }
    GeoMarker.setCircleOptions({fillColor: '#808080'});
    google.maps.event.addListenerOnce(GeoMarker, 'position_changed',     function() {
            map.setCenter(this.getPosition());
            map.fitBounds(this.getBounds());
    });
    google.maps.event.addListener(GeoMarker, 'geolocation_error', function(e) {
        alert('There was an error obtaining your position. Message: ' + e.message);
    });
    console.log('updating');
    GeoMarker.setMap(map);
},10000);
google.maps.event.addDomListener(window,'load',initialize);
if(!navigator.geolocation) {
    alert('Your browser does not support geolocation');
}

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