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问markerclusterer信息窗口
EN

Stack Overflow用户

提问于 2011-10-04 10:31:19

回答 4查看 12.2K关注 0票数 4

我要说的是，我对google地图和javascript还是相当陌生的。我把谷歌商店定位器教程和其他一些东西混在一起。到目前为止，我使用的是标记集群器(link)，基本上与谷歌地图api v3的标记集群器相同，但增加了一些功能，比如鼠标悬停和类似的东西。我正在尝试当你将鼠标移到集群上时弹出一个信息窗口。

工作演示here。下面是我的完整索引代码：

    <html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
    <title>Google Maps AJAX + mySQL/PHP Example</title>
    <script src="http://maps.google.com/maps/api/js?sensor=false"
            type="text/javascript"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script>
    <script src="markerclusterer.js" type="text/javascript"></script>
    <script type="text/javascript">
    //<![CDATA[
    var map;
    var markers = [];
    var infoWindow;
    var locationSelect; 
    var markerCluster = null;
    var m;
    var p = [];
    var contentString;


    function load() {
      map = new google.maps.Map(document.getElementById("map"), {
        center: new google.maps.LatLng(40, -100),
        zoom: 4,
        mapTypeId: 'roadmap',
        mapTypeControlOptions: {style: google.maps.MapTypeControlStyle.DROPDOWN_MENU}
      });
      infoWindow = new google.maps.InfoWindow();
      locationSelect = document.getElementById("locationSelect");
      locationSelect.onchange = function() {
        var markerNum = locationSelect.options[locationSelect.selectedIndex].value;
        if (markerNum != "none"){
          google.maps.event.trigger(markers[markerNum], 'click');
        }
      };
   }

   function searchLocations() {
     var address = document.getElementById("addressInput").value;
     var geocoder = new google.maps.Geocoder();
     geocoder.geocode({address: address}, function(results, status) {
       if (status == google.maps.GeocoderStatus.OK) {
        searchLocationsNear(results[0].geometry.location);
       } else {
         alert(address + ' not found');
       }
     });
   }

   function clearLocations() {
     infoWindow.close();
     for (var i = 0; i < markers.length; i++) {
       markers[i].setMap(null);
     }
     markers.length = 0;
     locationSelect.innerHTML = "";
     var option = document.createElement("option");
     option.value = "none";
     option.innerHTML = "See all results:";
     locationSelect.appendChild(option);
   }

   function searchLocationsNear(center) {
     clearLocations(); 

     var radius = document.getElementById('radiusSelect').value;
     var searchUrl = 'genxml.php?lat=' + center.lat() + '&lng=' + center.lng() + '&radius=' + radius;
     downloadUrl(searchUrl, function(data) {
       var xml = parseXml(data);
       var markerNodes = xml.documentElement.getElementsByTagName("marker");
       var bounds = new google.maps.LatLngBounds();
       for (var i = 0; i < markerNodes.length; i++) {
         var name = markerNodes[i].getAttribute("name");
         var address = markerNodes[i].getAttribute("address");
         var distance = parseFloat(markerNodes[i].getAttribute("distance"));
         var foodID = markerNodes[i].getAttribute("foodID");
         var restaurantName = markerNodes[i].getAttribute("restaurantName");
         var latlng = new google.maps.LatLng(
              parseFloat(markerNodes[i].getAttribute("lat")),
              parseFloat(markerNodes[i].getAttribute("lng")));

         createOption(name, distance, i);
         createMarker(latlng, name, address, distance, foodID, restaurantName);
         bounds.extend(latlng);
       }
       map.fitBounds(bounds);
       locationSelect.style.visibility = "visible";
       locationSelect.onchange = function() {
         var markerNum = locationSelect.options[locationSelect.selectedIndex].value;
         google.maps.event.trigger(markers[markerNum], 'click');
       };
       var clusterOptions = { zoomOnClick: false }
        var markerCluster = new MarkerClusterer(map, markers, clusterOptions);
        var contentString = 'This is an example';
        var infowindow = new google.maps.InfoWindow({
        content: contentString
        });
        google.maps.event.addListener(markerCluster, "mouseover", function (c) {
            infowindow.open(map,marker);
            //alert(contentString);
          //log("mouseover: ");
          //log("&mdash;Center of cluster: " + c.getCenter());
          //log("&mdash;Number of managed markers in cluster: " + c.getSize());
        });
       // google.maps.event.addListener(markerCluster, "mouseout", function (c) {
          //log("mouseout: ");
         // log("&mdash;Center of cluster: " + c.getCenter());
         // log("&mdash;Number of managed markers in cluster: " + c.getSize());
       // });
      });
    }

    function createMarker(latlng, name, address, distance, foodID, restaurantName) {
      var html = "<b>" + name + "</b> <br/>" + address + "<br/>" + distance + "<br/>" + foodID + ": the food id" + "<br/>" + restaurantName;
      var marker = new google.maps.Marker({
        map: map,
        position: latlng
      });
      google.maps.event.addListener(marker, 'click', function() {
        infoWindow.setContent(html);
        infoWindow.open(map, marker);
      });
      markers.push(marker);
    }

    function createOption(name, distance, num) {
      var option = document.createElement("option");
      option.value = num;
      option.innerHTML = name + "(" + distance.toFixed(1) + ")";
      locationSelect.appendChild(option);
    }

    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.responseText, request.status);
        }
      };

      request.open('GET', url, true);
      request.send(null);
    }

    function parseXml(str) {
      if (window.ActiveXObject) {
        var doc = new ActiveXObject('Microsoft.XMLDOM');
        doc.loadXML(str);
        return doc;
      } else if (window.DOMParser) {
        return (new DOMParser).parseFromString(str, 'text/xml');
      }
    }

    function doNothing() {}

    //]]>

function log(h) {
       document.getElementById("log").innerHTML += h + "<br />";
     }

  </script>
  </head>

  <body style="margin:0px; padding:0px;" onLoad="load()"> 
    <div>
     <input type="text" id="addressInput" size="10"/>
    <select id="radiusSelect">
      <option value="25" selected>25mi</option>
      <option value="100">100mi</option>
      <option value="200">200mi</option>
    </select>

    <input type="button" onClick="searchLocations()" value="Search"/>
    </div>
    <div><select id="locationSelect" style="width:100%;visibility:hidden"></select></div>
    <div id="map" style="width: 100%; height: 80%"></div>
    <div id="log"></div>
  </body>
</html>

基本上归结到这一部分，我可能放错了地方：

var contentString = 'This is an example';
    var infowindow = new google.maps.InfoWindow({
    content: contentString
    });
    google.maps.event.addListener(markerCluster, "mouseover", function (c) {
        infowindow.open(map,marker);

我认为我做的信息窗口是正确的，但它没有出现。我知道鼠标悬停起作用了，因为当我测试它的时候，注释掉的警告就起作用了。你知道我做错了什么吗？

infowindow

markerclusterer

javascript

google-maps-api-3

google-maps-markers

回答 4

Stack Overflow用户

回答已采纳

发布于 2011-11-16 23:43:21

infoWindow.Open有两个重载

 infoWindow.Open(map, marker)
 infoWindow.Open(map)

由于您希望将其添加到集群(而不是标记)，因此您应该使用第二个标记

您必须设置获取集群中心的位置

google.maps.event.addListener(markerCluster, "mouseover", function (mCluster) {    
    infowindow.content += "<div>Something<\/div>";
    infowindow.setPosition(mCluster.getCenter());
    infowindow.open(map);
});

我知道它是有效的，因为我刚刚做到了。

google maps api v3 + infoBubble in markerClusterer

票数 11

Stack Overflow用户

发布于 2011-10-04 16:54:37

您已经有了infowindow.open(map,marker);，但是我看不到在哪里创建标记(除了您的createMarkers函数中的局部变量，此时您还不能真正访问它)。那不应该是infowindow.open(map,markerCluster);吗？

另一个建议。第二个参数是infowindow被锚定的位置。但是，您并不需要它。当您创建您的infowindow时，您可以设置位置属性(即使用与标记相同的经度/lng)。然后你可以直接调用infowindow.open(map);

票数 0

Stack Overflow用户

发布于 2013-12-20 00:24:49

Raphael Isidro's solution对我不起作用。奇怪的是，标记文本是空的，并且定位在屏幕的网格(0,0)上。

这对我来说非常有效：

var markerCluster = new MarkerClusterer(map, my_markers ,{zoomOnClick: false});
google.maps.event.addListener(markerCluster, 'clusterclick', function(cluster) {
  var content = '';
  // Convert lat/long from cluster object to a usable MVCObject
  var info = new google.maps.MVCObject;
  info.set('position', cluster.center_);
  iw.close();
  iw.setContent('<h1>Hi this is my Info Window</h1>');
  iw.open(map, info);
});

此处的工作示例:请参阅http://krisarnold.com/2010/10/15/adding-info-windows-to-map-clusters-with-google-maps-api-v3/

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/7642728

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