Google maps api 3 从标记将谷歌地图居中
我正在尝试从数据库中获取的位置创建带有标记的地图。我成功地使用创建了地图。问题是,在创建地图时,我必须手动输入中心位置 有没有办法用记号笔将地图居中?。我使用的代码如下所示:Google maps api 3 从标记将谷歌地图居中,google-maps-api-3,Google Maps Api 3,我正在尝试从数据库中获取的位置创建带有标记的地图。我成功地使用创建了地图。问题是,在创建地图时,我必须手动输入中心位置 有没有办法用记号笔将地图居中?。我使用的代码如下所示: <!DOCTYPE html > <head> <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> <meta http-equiv="content-type" cont
<!DOCTYPE html >
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>PHP/MySQL & Google Maps Example</title>
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js"></script>
<script type="text/javascript">
//<![CDATA[
var customIcons = {
restaurant: {
icon: 'http://labs.google.com/ridefinder/images/mm_20_blue.png'
},
bar: {
icon: 'http://labs.google.com/ridefinder/images/mm_20_red.png'
}
};
function load() {
var map = new google.maps.Map(document.getElementById("map"), {
center: new google.maps.LatLng(47.6145, -122.3418),
zoom: 13,
mapTypeId: 'roadmap'
});
var infoWindow = new google.maps.InfoWindow;
// Change this depending on the name of your PHP file
downloadUrl("loadposition.php", function(data) {
var xml = data.responseXML;
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
var name = markers[i].getAttribute("name");
var address = markers[i].getAttribute("address");
var type = markers[i].getAttribute("type");
var point = new google.maps.LatLng(
parseFloat(markers[i].getAttribute("Latitud")),
parseFloat(markers[i].getAttribute("Longitud")));
var html = "<b>" + name + "</b> <br/>" + address;
var icon = customIcons[type] || {};
var marker = new google.maps.Marker({
map: map,
position: point,
icon: icon.icon
});
bindInfoWindow(marker, map, infoWindow, html);
}
});
}
function bindInfoWindow(marker, map, infoWindow, html) {
google.maps.event.addListener(marker, 'click', function() {
infoWindow.setContent(html);
infoWindow.open(map, marker);
});
}
function downloadUrl(url, callback) {
var request = window.ActiveXObject ?
new ActiveXObject('Microsoft.XMLHTTP') :
new XMLHttpRequest;
request.onreadystatechange = function() {
if (request.readyState == 4) {
request.onreadystatechange = doNothing;
callback(request, request.status);
}
};
request.open('GET', url, true);
request.send(null);
}
function doNothing() {}
//]]>
</script>
</head>
<body onload="load()">
<div id="map" style="width: 500px; height: 300px"></div>
</body>
</html>
PHP/MySQL和googlemaps示例
//
此外,我的XML生成文件如下所示:
<markers>
<marker Latitud="-33.449148" Longitud="-70.552886"/>
</markers>
非常感谢 添加标记后,我在一个应用程序中使用了这个。也许对你有帮助
bounds = new google.maps.LatLngBounds();
bounds.extend(marker.position);
if (!bounds.isEmpty())
map.panTo(bounds.getCenter());
最初的想法是找到一堆标记的中心,所以这可能太过分了。我试过了,但没有成功:/我应该在哪里记录边界?那我用什么作为地图的中心呢?Thanks@TomasCampos在downloadUrl回调中创建边界。扩展for循环中的边界。在函数末尾,执行map.panTo(也可以使用map.setCenter)