如何使infowindow和setzoom都适用于谷歌地图API v3



首先我应该说我对javascript或Google API V3不太了解。不管怎样,我一直试图在谷歌地图上添加标记,用信息窗口来指示我去过的地方。我在网上找到一个例子,并把它复制到我的网页上。然后,我尝试添加一个函数,以便在单击标记时放大到该位置。在更改代码后,我设法使缩放工作得非常好。但是,信息窗口不会打开。在它打开之前,当我使用这个;

infowindow.setContent(contentString); 
infowindow.open(map,marker);. 

但是缩放无法正常工作。改成这个之后;

infowindow.setContent(this.html);
infowindow.open(map, this);

变焦效果很好。但我丢失了信息窗口。有人能看到我如何更改代码以使缩放和信息窗口都能工作吗。如果有人能帮助我,我将非常高兴。我可以使用下面的代码进行调整吗?还是需要完全重写?提前感谢

<script>
//<![CDATA[
// this variable will collect the html which will eventually be placed in the    side_bar 
var side_bar_html = "";
// arrays to hold copies of the markers and html used by the side_bar 
// because the function closure trick doesnt work there 
var gmarkers = [];
var map = null;
function initialize() {
    // create the map
    var myOptions = {
        zoom: 7,
        center: new google.maps.LatLng(47.516231, 13.550072),
        mapTypeControl: true,
        mapTypeControlOptions: {
            style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR
        },
        navigationControl: true,
        mapTypeId: google.maps.MapTypeId.TERRAIN
    }
    map = new google.maps.Map(document.getElementById("map_canvas"),
    myOptions);
    google.maps.event.addListener(map, 'click', function () {
        infowindow.close();
    });
    // Add markers to the map
    // add the points 
    var point = new google.maps.LatLng(48.208174, 16.373819);
    var marker = createMarker(point, "Vienna", '<div style="font-size:12px;font-weight:   bold;font-family:segoe ui, Trebuchet MS;">Vienna</div>')
    // put the assembled side_bar_html contents into the side_bar div
    document.getElementById("side_bar").innerHTML = side_bar_html;
}
var infowindow = new google.maps.InfoWindow({
    size: new google.maps.Size(150, 100)
});
// This function picks up the click and opens the corresponding info window
function myclick(i) {
    google.maps.event.trigger(gmarkers[i], "click");
}
// A function to create the marker and set up the event window function 
function createMarker(latlng, name, html) {
    var contentString = html;
    var marker = new google.maps.Marker({
        position: latlng,
        map: map,
        zIndex: Math.round(latlng.lat() * -100000) << 5
    });
    google.maps.event.addListener(marker, 'click', function () {
        infowindow.setContent(this.html);
        infowindow.open(map, this);
        map.setZoom(10);
        map.setCenter(marker.getPosition());
    });
    // save the info we need to use later for the side_bar
    gmarkers.push(marker);
    // add a line to the side_bar html
    side_bar_html += '<a href="javascript:myclick(' + (gmarkers.length - 1) + ')">' + name + '</a><br>';
}
</script>

主要问题是您将代码更改为使用标记的.html属性(google.maps.marker对象没有.html属性,但您可以添加它们)。

2个修复选项:

  • 使用您的原始代码:

    // A function to create the marker and set up the event window function 
    function createMarker(latlng, name, html) {
        var contentString = html;
        var marker = new google.maps.Marker({
            position: latlng,
            map: map,
            zIndex: Math.round(latlng.lat() * -100000) << 5
        });
        google.maps.event.addListener(marker, 'click', function () {
            infowindow.setContent(contentString); 
            infowindow.open(map,marker);
            map.setZoom(10);
            map.setCenter(marker.getPosition());
       });
       // save the info we need to use later for the side_bar
       gmarkers.push(marker);
       // add a line to the side_bar html
       side_bar_html += '<a href="javascript:myclick(' + (gmarkers.length - 1) + ')">' + name + '</a><br>';
    }
    

工作示例

  • 将.html添加到google.maps.Marker并使用this:

    // A function to create the marker and set up the event window function 
    function createMarker(latlng, name, html) {
        var marker = new google.maps.Marker({
            position: latlng,
            map: map,
            html: html,  // <---------------------------------------------- add this to the Marker
            zIndex: Math.round(latlng.lat() * -100000) << 5
        });
        google.maps.event.addListener(marker, 'click', function () {
            infowindow.setContent(this.html); 
            infowindow.open(map,this);
            map.setZoom(10);
            map.setCenter(this.getPosition());
       });
       // save the info we need to use later for the side_bar
       gmarkers.push(marker);
       // add a line to the side_bar html
       side_bar_html += '<a href="javascript:myclick(' + (gmarkers.length - 1) + ')">' + name + '</a><br>';
    }
    

默认情况下,API将平移映射,以便信息窗口完全可见(如果可能)。

这将通过使用动画来完成,当您设置缩放+中心时,此动画仍在运行,并将覆盖您的设置。

infowindowdisableAutoPan-选项设置为true以禁用自动平移,并且它应该按预期工作

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