Google地图中的标记可见性

Question

我正在构建一个寻宝者应用程序,我需要能够隐藏一个标记,并且只能在某个缩放级别显示它.

我该如何实现这一目标？

我正在使用自定义标记和谷歌地图v3.

谢谢.

哦,奇怪的是,我可以在某个缩放级别关闭可见性,如下面的代码所示:

var marker = new google.maps.Marker({
    draggable: false,
    raiseOnDrag: false,
    clickable: true,
    icon: image,
    shadow: shadow,
    shape: shape,
    map: map,
    url: 'http://www.google.com/',
    visible: true,
    position: markerLatlng
});

var zoomLevel;
//marker.visible = false;

google.maps.event.addListener(marker, 'click', function() {
    window.location.href = marker.url;
});

var infowindow = new google.maps.InfoWindow(
{
    content: 'Oh You Found Me!!!',
    size: new google.maps.Size(25,25),
    position: myLatlng
});


google.maps.event.addListener(map, 'zoom_changed', function() {
    zoomLevel = map.getZoom();

    if (zoomLevel == 16) {

        marker.visible = false;

        infowindow.open(map,marker);

    }
});

但如果我反转marker.visibility,那么:

var marker = new google.maps.Marker({

    draggable: false,

    raiseOnDrag: false,

    clickable: true,

    icon: image,

    shadow: shadow,

    shape: shape,

    map: map,

    url: 'http://www.google.com/',



    visible: false,

    position: markerLatlng

});

google.maps.event.addListener(map, 'zoom_changed', function() {
    zoomLevel = map.getZoom();

    if (zoomLevel == 16) {

        marker.visible = true;

        infowindow.open(map,marker);

    }      
});

标记根本不会显示在地图上.

Answer 1

setVisible的正确方法是 marker.setVisible(false);

Answer 2

如果要在标记初始化时设置可见性,而不是在事后设置方法,请使用以下语法(请参阅文档):

marker = new google.maps.Marker({
    map: map,
    visible: false, // <------
});