单个页面上的多个 Google 地图

Question

我想将 Google Maps API 的多个地图添加到我的 C# ASP.NET 应用程序的页面中。但是，使用我当前的代码，只显示最后一张地图。应该包含地图的所有其他 div 都是空的。正如您在我的代码中看到的那样，地图已经有了唯一的名称（不是很好，但它是唯一的）。有人可以解释我做错了什么吗？ 将不胜感激。

初始化谷歌：

protected void loadGoogle()
{
    var googleScript = "function loadScript() {" +
        "var script = document.createElement(\"script\");" +
        "script.type = \"text/javascript\";" +
        "script.src = \"http://maps.google.com/maps/api/js?sensor=false& callback=initialize\"; " +
        "document.body.appendChild(script);" +
        "}" +
        "window.onload = loadScript;";
    ClientScript.RegisterStartupScript(typeof(Page), "CreateGoogleMapScript", googleScript, true);
}

创建地图（多次调用）：

protected void createMap(String mapId, String address)
{
    var script = "function initialize() {" +
        "var geocoder = new google.maps.Geocoder();" +
        "var latlng = new google.maps.LatLng(-34.397, 150.644);" +
        "var mapOptions" + mapId + " = {" +
        "zoom: 16," +
        "center: latlng," +
        "mapTypeId: google.maps.MapTypeId.ROADMAP" +
        "};" +
        " var map" + mapId + " = new google.maps.Map(document.getElementById(" + mapId + "), mapOptions" + mapId + ");" +

        "var address = \"" + address + "\";" +
        "geocoder.geocode( { 'address': address}, function(results, status) {" +
        "if (status == google.maps.GeocoderStatus.OK) {" +
        "map" + mapId + ".setCenter(results[0].geometry.location);" +
        "var marker = new google.maps.Marker({" +
        "map: map" + mapId + "," +
        "position: results[0].geometry.location" +
        "});" +
        "} else {" +
        "alert(\"Geocode was not successful for the following reason: \" + status); " +
        "}" +
        "});" +
        "}";
    ClientScript.RegisterClientScriptBlock(typeof(Page), "CreateMapScript"+mapId, script, true);
}

调用者：

While 循环，literal.Text 添加一个新的 div，然后是 createMap(mapId, address);

更新：

我的新代码：

 var script = "function initialize() { var geocoder = new google.maps.Geocoder();";                  

            for (int i = 0; i < maps.Count; i++)
            {
                String currentId = maps[i] as String;
                String currentLocation = locations[i] as String;

                script += " " + 
                    "var latlng = new google.maps.LatLng(" + 500 + "," + 400 + ");" +
                    "var myOptions = {" +
                        "zoom: 16," +
                        "center: latlng," +
                        "mapTypeId: google.maps.MapTypeId.ROADMAP" +
                    "};" +                    
                    "var map = new google.maps.Map(document.getElementById(\"" + currentId + "\"), myOptions);" +

                    "var address = \"" + currentLocation + "\";" +
                        "geocoder.geocode( { 'address': address}, function(results, status) {" +
                          "if (status == google.maps.GeocoderStatus.OK) {" +
                            "map.setCenter(results[0].geometry.location);" +
                            "var marker = new google.maps.Marker({" +
                                "map: map," +
                                "position: results[0].geometry.location" +
                            "});" +
                          "} else {" +
                                "alert(\"Geocode was not successful for the following reason: \" + status); " +
                            "}" +
                         "});";
            }
            script += "};";

现在所有地图都绘制好了，但只有最后一张地图的位置正确。其他的基于 latlng 变量。为什么地理编码器不能多次使用？

Answer 1

也许只是最后一个initialize 函数在浏览器中触发？尝试只使用 1 个初始化函数来初始化所有地图。