Question

我正在构建我的第一个Fusion Tables，并将两个Fusion Tables引入Google Map - 一个多边形和一个点。当你点击多边形或一个点时，我不想显示常规信息窗口，而是想从Fusion Table中提取一些数据，但它无法正常工作：

<script>
  function initialize() {
    var england = new google.maps.LatLng(53.2, -2);
    map = new google.maps.Map(document.getElementById('map_canvas'), {
      center: england,
      zoom: 8,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });

    layer1 = new google.maps.FusionTablesLayer({
      query: {select: 'geometry', from: '1HgGUc72F2Wlp6dvy4GWvLyWrl1kC6aJhnM7jPyc'},
      styles: [
        { where: "Score = 0", polygonOptions: { fillColor: "#cdcdcd", fillOpacity: 0.3 } },
        { where: "Score = 1", polygonOptions: { fillColor: "#FF0000", fillOpacity: 0.5 } },
        { where: "Score = 2", polygonOptions: { fillColor: "#FF7E00", fillOpacity: 0.5 } },
        { where: "Score = 3", polygonOptions: { fillColor: "#008000", fillOpacity: 0.5 } }],
    options: {suppressInfoWindows: true},
    map: map,
    });
    google.maps.event.addListener(layer1, 'click', function(e) {e.infoWindowHtml = "Score" + e.row['Score'].value;}
    });

    layer2 = new google.maps.FusionTablesLayer({
    query: {select: 'postcode', from: '1bawAKwQAUGE4mzYSyw4lTbOcgp7MgIGOLROel8Y'},
    options: {suppressInfoWindows: true},
    map: map,
     });
    google.maps.event.addListener(layer2, 'click', function(e) {e.infoWindowHtml = "Postcode" + e.row['Postcode'].value;}
    });

    google.maps.event.addDomListener(window, 'load', initialize);

  }
</script>
</head>
<body onLoad="initialize()">
  <div id="map_canvas"></div>
</body>
</html>

It was all working well，infowindows被抑制，直到我添加了AddListener和addDomListeners。有人可以帮我恢复正常吗？

Answer 1

您的“新”代码中存在语法错误（两个额外的“}”）

你在初始化函数中调用了addDomListener（因为你在<body标签中仍然没有这个问题，但是你真的不应该把它放在两个地方。

<script>
 function initialize() {
 var england = new google.maps.LatLng(53.2, -2);
map = new google.maps.Map(document.getElementById('map_canvas'), {
  center: england,
  zoom: 8,
  mapTypeId: google.maps.MapTypeId.ROADMAP
});

layer1 = new google.maps.FusionTablesLayer({
  query: {select: 'geometry', from: '1HgGUc72F2Wlp6dvy4GWvLyWrl1kC6aJhnM7jPyc'},
  styles: [
    { where: "Score = 0", polygonOptions: { fillColor: "#cdcdcd", fillOpacity: 0.3 } },
    { where: "Score = 1", polygonOptions: { fillColor: "#FF0000", fillOpacity: 0.5 } },
    { where: "Score = 2", polygonOptions: { fillColor: "#FF7E00", fillOpacity: 0.5 } },
    { where: "Score = 3", polygonOptions: { fillColor: "#008000", fillOpacity: 0.5 } }],
options: {suppressInfoWindows: true},
map: map,
});
google.maps.event.addListener(layer1, 'click', function(e) {e.infoWindowHtml = "Score" + e.row['Score'].value;});
layer2 = new google.maps.FusionTablesLayer({
query: {select: 'postcode', from: '1bawAKwQAUGE4mzYSyw4lTbOcgp7MgIGOLROel8Y'},
options: {suppressInfoWindows: true},
map: map,
 });
 google.maps.event.addListener(layer2, 'click', function(e) {e.infoWindowHtml = "Postcode" + e.row['Postcode'].value;});
 }
 google.maps.event.addDomListener(window, 'load', initialize);
 </script>
 </head>
  <body>
   <div id="map_canvas"></div>
</body>
</html>

working example 修改为使用此函数使每个图层的infowindows工作：

function openIW(FTevent) {
  // infoWindow.setContent(FTevent.infoWindowHtml);
  // infoWindow.setPosition(FTevent.latLng);
  infoWindow.setOptions(
    { 
     content: FTevent.infoWindowHtml,
     position: FTevent.latLng,
     pixelOffset: FTevent.pixelOffset
    });
  infoWindow.open(map);
}

Answer 2

google.maps.event.addListener(layer, 'click', function(e) {
    console.log("E.Row! : "+ e.row['name'].value);
});

在Google地图上的Fusion Tables图层上显示来自信息窗口的数据

2 个答案: