使用 MarkerClusterer 标记上的 InfoWindow
这是我的 html 代码。我已经尝试过在标记上添加信息窗口的任何方法,但它不起作用。我的数据是从“Alle_Ortswahlen.page1.xml”文件加载的。 有谁知道如何将 infoWindow 添加到每个标记?
<script type="text/javascript">
google.load('maps', '3', {
other_params: 'sensor=false'
});
google.setOnLoadCallback(initialize);
function initialize() {
var stack = [];
var center = new google.maps.LatLng(48.136, 11.586);
var options = {
'zoom': 5,
'center': center,
'mapTypeId': google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"), options);
GDownloadUrl("Alle_Ortswahlen.page1.xml", function(doc) {
var xmlDoc = GXml.parse(doc);
var markers = xmlDoc.documentElement.getElementsByTagName("ROW");
for (var i = 0; i < markers.length; i++) {
// obtain the attribues of each marker
var lat = parseFloat(markers[i].getAttribute("Field4"));
var lng = parseFloat(markers[i].getAttribute("Field6"));
var marker = new google.maps.Marker({
position : new google.maps.LatLng(lat, lng),
map: map,
title:"This is a marker"
});
stack.push(marker);
}
var mc = new MarkerClusterer(map,stack);
});
}
</script>
This is my html code. I've try anything to add an infowindow on the markers but it don't wanna work. My data is loading from the "Alle_Ortswahlen.page1.xml" file.
Do anyone have an idea how can I add infoWindow to each marker?
<script type="text/javascript">
google.load('maps', '3', {
other_params: 'sensor=false'
});
google.setOnLoadCallback(initialize);
function initialize() {
var stack = [];
var center = new google.maps.LatLng(48.136, 11.586);
var options = {
'zoom': 5,
'center': center,
'mapTypeId': google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"), options);
GDownloadUrl("Alle_Ortswahlen.page1.xml", function(doc) {
var xmlDoc = GXml.parse(doc);
var markers = xmlDoc.documentElement.getElementsByTagName("ROW");
for (var i = 0; i < markers.length; i++) {
// obtain the attribues of each marker
var lat = parseFloat(markers[i].getAttribute("Field4"));
var lng = parseFloat(markers[i].getAttribute("Field6"));
var marker = new google.maps.Marker({
position : new google.maps.LatLng(lat, lng),
map: map,
title:"This is a marker"
});
stack.push(marker);
}
var mc = new MarkerClusterer(map,stack);
});
}
</script>
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在 for 循环之前,创建一个空的 infowindow 对象。
比在 for 循环中,在标记之后添加一个事件侦听器,如下所示:
将回调参数传递给 addListener 方法时,会发生一些闭包魔术。如果您不熟悉,请查看此处:
Mozilla 开发中心:使用闭包
,您的代码应如下所示:
Before the for cycle, make an empty infowindow object.
Than in the for cycle, after the marker, add an event listener, like this:
There is some closure magic happening when passing the callback argument to the addListener method. If you are not familiar with it, take a look at here:
Mozilla Dev Center: Working with Closures
So, your code should look something like this:
因此,您需要做的是在 for 循环内添加一些代码,将 infowindow onclick 事件处理程序与每个标记关联起来。我假设您只想一次显示 1 个信息窗口,即您单击一个标记,信息窗口将显示相关内容。如果您随后单击另一个标记,第一个信息窗口就会消失,并且新的信息窗口会重新出现并附加到另一个标记。而不是同时显示多个信息窗口。
So what you need to do is add some code, inside your for-loop, associating an infowindow onclick event handler with each marker. I'm assuming you only want to have 1 infowindow showing at a time, i.e. you click on a marker, the infowindow appears with relevant content. If you then click on another marker, the first infowindow disappears, and a new one reappears attached to the other marker. Rather than having multiple infowindows all visible at the same time.