谷歌地图集群器没有标记
[英]google maps clusterer no markers
问题描述
我正在尝试将markerclusterplus.js与谷歌地图api v3一起使用。 我正在遍历地址编码的每个地址数组，并添加一个标记和信息窗口。 我将标记推送到称为标记的数组，并使用以下代码将其添加到群集中
var markerCluster = new MarkerClusterer(map, markers);
没有聚集的标记出现。 其余的代码有效，如果我添加
map: map
对我的标记来说，它们会显示为标准标记，所以一切都很好。 当使用以下方式标记标记数组时
alert(markers.toString())
什么都没有返回，所以可能什么也没有推送到数组？
完整代码如下
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false&ver=3.5.1"></script>
<script type="text/javascript" src="http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclustererplus/src/markerclusterer.js"></script>
</head>
<body>
<script type="text/javascript">
var map; //Map variable
var geocoder; //Geocoder variable
var infowindow;
//var marker; //Marker variable
//Options variable
var myOptions = {
zoom: 2,
mapTypeId: google.maps.MapTypeId.ROADMAP,
disableDefaultUI: true,
};
var LatLngList = [];
//Geocoder function
function myGeocode() {
infowindow = new google.maps.InfoWindow({
maxWidth: 200
});
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
geocoder = new google.maps.Geocoder();
var titles = ['Anne of Cleves House',
'Lewes Castle',
'Michelham Priory',
'Fishbourne Roman Palace & Gardens',
'Marlipins Museum','The Priest House',
'The Long Man'
];
var addresses =[
'Anne of Cleves House, 52, Southover High St, Lewes, BN7 1JA',
'Barbican House Museum, 169, High Street, Lewes, BN7 1YE',
'Michelham Priory, Upper Dicker, Hailsham, East Sussex, BN27 3QS',
'Fishbourne Roman Palace, Roman Way, Fishbourne, West Sussex, PO19 3QR',
'Marlipins Museum, High Street, Shoreham-by-Sea, West Sussex, BN43 5DA',
'The Priest House, North Lane, West Hoathly, West Sussex, RH19 4PP',
'The long man of wilmington'
];
var descriptions = [
'Anne of Cleves House you can explore how the Tudors and Elizabethans lived, worked and relaxed at home.',
'Climb to the top of this 1000 year old Norman Castle for stunning panoramic views across Sussex.',
'England\'s longest water filled moat surrounds the site which dates back to 1229.',
'Welcome to the largest Roman home in Britain',
'The striking chequerboard flint and Caen limestone facade is part of one of the oldest Norman buildings in Sussex.',
'The only one of its kind open to the public, this beautiful 15th century Wealden hall house stands in a traditional cottage garden.',
'the long man of wilmington'
];
for (var i = 0; i < addresses.length; i++) {
var address = addresses[i];
var title = titles[i];
var description = descriptions[i];
//var alink = links[i];
var markers = [];
var marker;
(function(address, title, description) {
geocoder.geocode( {"address": address }, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
latlng = results[0].geometry.location;
LatLngList.push(latlng);
map.setCenter(latlng);
marker = new google.maps.Marker({
position: latlng
//map: map,
//title: title,
});
markers.push(marker);
google.maps.event.addListener(marker, "click", function () {
infowindow.setContent("<div class='map-infowindow'><h4 class='gm-title'>"+title+"</h4>"+description+"'<a class='gm-directions' href='http://maps.google.com/maps?saddr="+address+"'>Get directions</a></div>");
infowindow.open(map, marker);
});
}
else {
document.getElementById("text_status").value = status;
}
});//end of geocoder
})(address, title, description); // <- Call function, pass the vars to be captured
}//end of for loop
alert(markers.toString())
var markerCluster = new MarkerClusterer(map, markers);
// Create a new viewpoint bound
var bounds = new google.maps.LatLngBounds ();
// Go through each...
for (var i = 0, LtLgLen = LatLngList.length; i < LtLgLen; i++) {
// And increase the bounds to take this point
bounds.extend (LatLngList[i]);
}
// Fit these bounds to the map
map.fitBounds (bounds);
//alert(LatLngList.join('\n'))
}
window.onload=myGeocode;
</script>
<div id="map_canvas" style="width:600px; height:600px;"></div>
</body>
</html>
1 个解决方案
解决方案1
0 2013-04-15 12:53:11
首先，每次在循环内重新定义标记数组时，必须在循环外部定义标记数组。
其次，geocoder.geocode是异步工作的，因此直到循环结束后甚至在您的alert（）调用之后，地理编码才真正完成。
第三，没有必要在循环中使用闭包，因为您每次都要在循环中重新定义一个函数。 在这种情况下，我总是更喜欢在当前函数内添加一个私有方法。 因此，进行地理编码调用的函数仅定义一次并根据需要调用。 现在，我们需要做的就是观察（从地址解析器的回调函数中）标记数组的长度增长，直到它与地址数组的长度相同，然后我们知道所有地理编码已经完成（当然，假设一切顺利），完成事情的时间：
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false&ver=3.5.1"></script>
<script type="text/javascript" src="http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclustererplus/src/markerclusterer.js"></script>
</head>
<body>
<script type="text/javascript">
var map; //Map variable
var geocoder; //Geocoder variable
var infowindow;
//var marker; //Marker variable
//Options variable
var myOptions = {
zoom: 2,
mapTypeId: google.maps.MapTypeId.ROADMAP,
disableDefaultUI: true,
};
var LatLngList = [];
//Geocoder function
function myGeocode() {
infowindow = new google.maps.InfoWindow({
maxWidth: 200
});
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
geocoder = new google.maps.Geocoder();
var titles = [
'Anne of Cleves House',
'Lewes Castle',
'Michelham Priory',
'Fishbourne Roman Palace & Gardens',
'Marlipins Museum','The Priest House',
'The Long Man'
];
var addresses =[
'Anne of Cleves House, 52, Southover High St, Lewes, BN7 1JA',
'Barbican House Museum, 169, High Street, Lewes, BN7 1YE',
'Michelham Priory, Upper Dicker, Hailsham, East Sussex, BN27 3QS',
'Fishbourne Roman Palace, Roman Way, Fishbourne, West Sussex, PO19 3QR',
'Marlipins Museum, High Street, Shoreham-by-Sea, West Sussex, BN43 5DA',
'The Priest House, North Lane, West Hoathly, West Sussex, RH19 4PP',
'The long man of wilmington'
];
var descriptions = [
'Anne of Cleves House you can explore how the Tudors and Elizabethans lived, worked and relaxed at home.',
'Climb to the top of this 1000 year old Norman Castle for stunning panoramic views across Sussex.',
'England\'s longest water filled moat surrounds the site which dates back to 1229.',
'Welcome to the largest Roman home in Britain',
'The striking chequerboard flint and Caen limestone facade is part of one of the oldest Norman buildings in Sussex.',
'The only one of its kind open to the public, this beautiful 15th century Wealden hall house stands in a traditional cottage garden.',
'the long man of wilmington'
];
var markers = [];
//private function, only need be defined once!
function getGeocode(address, title, description) {
geocoder.geocode( {"address": address }, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
latlng = results[0].geometry.location;
LatLngList.push(latlng);
map.setCenter(latlng);
var marker = new google.maps.Marker({
position: latlng,
map: map
//title: title,
});
markers.push(marker);
google.maps.event.addListener(marker, "click", function () {
infowindow.setContent("<div class='map-infowindow'><h4 class='gm-title'>"+title+"</h4>"+description+"'<a class='gm-directions' href='http://maps.google.com/maps?saddr="+address+"'>Get directions</a></div>");
infowindow.open(map, marker);
});
if (markers.length == addresses.length) { //we have received all of our geocoder responses
alert(markers);
var markerCluster = new MarkerClusterer(map, markers);
// Create a new viewpoint bound
var bounds = new google.maps.LatLngBounds ();
// Go through each...
for (var i = 0, LtLgLen = LatLngList.length; i < LtLgLen; i++) {
// And increase the bounds to take this point
bounds.extend (LatLngList[i]);
}
// Fit these bounds to the map
map.fitBounds (bounds);
}
} else {
document.getElementById("text_status").value = status;
}
});//end of geocoder
}
for (var i = 0; i < addresses.length; i++) {
var address = addresses[i];
var title = titles[i];
var description = descriptions[i];
//var alink = links[i];
//put our private function to work:
getGeocode(address, title, description);
}//end of for loop
}
window.onload=myGeocode;
</script>
<div id="map_canvas" style="width:600px; height:600px;"></div>
</body>
</html>
在将标记添加到Google Maps Clusterer时遇到问题
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