实际上,我在一个用户可以添加其业务的网站上工作。我想给他一个在地图上添加任何位置的功能。当他保存自己的业务详细信息和地图详细信息时,应该会将其保存到数据库中,以便在网站上发布业务后,在地图上显示该位置。简而言之,我想允许用户在地图上添加他的位置,并且在特定用户的网站上,地图应该在地图上显示他的位置。由于我对这一切都是新手,我对如何做到这一点感到困惑。所以请帮帮我。我在谷歌上搜索过,但我的问题没有得到任何帮助。提前感谢。。。。
这是我尝试过的代码:
<script type="text/javascript">
function initialize() {
var mapOptions = {
center: new google.maps.LatLng(-33.8688, 151.2195),
zoom: 13,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById('map-canvas'),
mapOptions);
var input = /** @type {HTMLInputElement} */(document.getElementById('searchTextField'));
var autocomplete = new google.maps.places.Autocomplete(input);
autocomplete.bindTo('bounds', map);
var infowindow = new google.maps.InfoWindow();
var marker = new google.maps.Marker({
map: map
});
google.maps.event.addListener(autocomplete, 'place_changed', function() {
infowindow.close();
marker.setVisible(false);
input.className = '';
var place = autocomplete.getPlace();
if (!place.geometry) {
// Inform the user that the place was not found and return.
input.className = 'notfound';
return;
}
// If the place has a geometry, then present it on a map.
if (place.geometry.viewport) {
map.fitBounds(place.geometry.viewport);
} else {
map.setCenter(place.geometry.location);
map.setZoom(17); // Why 17? Because it looks good.
}
marker.setIcon(/** @type {google.maps.Icon} */({
url: place.icon,
size: new google.maps.Size(71, 71),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(17, 34),
scaledSize: new google.maps.Size(35, 35)
}));
marker.setPosition(place.geometry.location);
marker.setVisible(true);
var address = '';
if (place.address_components) {
address = [
(place.address_components[0] && place.address_components[0].short_name || ''),
(place.address_components[1] && place.address_components[1].short_name || ''),
(place.address_components[2] && place.address_components[2].short_name || '')
].join(' ');
}
var place = autocomplete.getPlace();
document.getElementById('city2').value = place.name;
document.getElementById('cityLat').value = place.geometry.location.lat();
document.getElementById('cityLng').value = place.geometry.location.lng();
var latitude = place.geometry.location.lat();
var longitude = place.geometry.location.lng();
infowindow.setContent('<div><strong>' + place.name + '</strong><br>' + address);
infowindow.open(map, marker);
});
// Sets a listener on a radio button to change the filter type on Places
// Autocomplete.
function setupClickListener(id, types) {
var radioButton = document.getElementById(id);
google.maps.event.addDomListener(radioButton, 'click', function() {
autocomplete.setTypes(types);
});
}
setupClickListener('changetype-all', []);
setupClickListener('changetype-establishment', ['establishment']);
setupClickListener('changetype-geocode', ['geocode']);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
<style>
#map-canvas, #map_canvas {
height: 400px;
width: 900px;
}
@media print {
#map-canvas, #map_canvas {
height: 400px;
width: 900px;
}
}
</style>
</head>
<body>
<?php
/*
* Smarty plugin
* -------------------------------------------------------------
* File: function.map.php
* Type: map
* Name: Map
* Purpose: Accept the keyword & find it on a map.
* -------------------------------------------------------------
*/
function smarty_function_map($params, &$smarty)
{
?>
<div id="panel">
<label>Location/Area*</label><input id="searchTextField" type="text" size="50" placeholder="Enter Location/Area">
<input type="text" id="city2" name="city2" />
<input type="text" id="cityLat" name="cityLat" />
<input type="text" id="cityLng" name="cityLng" />
</div>
<div id="map-canvas"></div>
<?php
}
?>
</body>
</html>
要允许用户通过点击地图向地图添加标记,您需要设置一个事件侦听器,该侦听器将侦听地图上的任何点击。示例:
var marker;
google.maps.event.addListener(map, 'click', function(event) {
if ( marker ) {
marker.setPosition(event.latLng);
} else {
marker = new google.maps.Marker({
position: event.latLng,
map: map,
draggable:true
});
}
});
你还想让用户在绘制标记后拖动它。你可以通过将标记设置为可拖动来实现这一点(我在上面的例子中做到了)。您还需要通过将事件侦听器附加到有问题的标记来侦听任何更改:
google.maps.event.addListener(marker, 'dragend', function(){
//Do something because marker has been dragged somewhere...
});
最后,每次单击地图或拖动标记时,都需要将生成的纬度和经度值保存在隐藏字段中,以便将位置保存在数据库中。