Google地图显示:无问题

Question

Google地图显示:无问题

Qui*_*son 36 javascript jquery google-maps

我正在尝试设置一个Google地图,该地图会在点击链接时显示,然后在点击其他链接时隐藏.一切正常,除非我从display:none显示地图,它无法正常显示.

我读到了使用google.maps.event.trigger(map,'resize'); 但我对Javascript和JQuery的熟练程度不足以知道如何添加它.

这是我一直在使用的代码:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 TRANSITIONAL//EN">
<html>
    <head>
        <title></title>
        <style type="text/css">
            #viewmap {
                position:relative;
                width:944px;
                float:left;
                display:none;
            }
            #hidemap {
                position:relative;
                width:944px;
                float:left;
                display:block;
            }
            #map_canvas {
                position:relative;
                float:left;
                width:944px;
                height:300px;
            }
        </style>
        <script type="text/javascript"
            src="http://maps.google.com/maps/api/js?v=3.2&sensor=false">
        </script>
        <script type="text/javascript">
            function initialize() {
                var latlng = new google.maps.LatLng(-27.999673,153.42855);
                var myOptions = {
                    zoom: 15,
                    center: latlng,
                    mapTypeId: google.maps.MapTypeId.ROADMAP,
                    mapTypeControl: true,
                    mapTypeControlOptions: {
                        style: google.maps.MapTypeControlStyle.DROPDOWN_MENU
                    }
                };

                var map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);

                var contentString = 'blah';

                var infowindow = new google.maps.InfoWindow({
                    content: contentString
                });

                var marker = new google.maps.Marker({
                    position: latlng, 
                    map: map
                });

                google.maps.event.addListener(marker, 'click', function() {
                    infowindow.open(map,marker);
                });
            }

            google.maps.event.addDomListener(window, 'load', initialize);
        </script>
        <script type="text/javascript">
            function toggleDiv1(viewmap){
                if(document.getElementById(viewmap).style.display == 'block'){
                    document.getElementById(viewmap).style.display = 'none';
                }else{
                    document.getElementById(viewmap).style.display = 'block';
                }
            }
            function toggleDiv2(hidemap){
                if(document.getElementById(hidemap).style.display == 'none'){
                    document.getElementById(hidemap).style.display = 'block';
                }else{
                    document.getElementById(hidemap).style.display = 'none';
                }
            }
        </script>
    </head>
    <body>
        <div id="viewmap">
            <a href="#" onmousedown="toggleDiv1('viewmap'); toggleDiv2('hidemap');">Hide map</a>
            <div id="map_canvas"></div>
        </div>
        <div id="hidemap">
            <a href="#" onmousedown="toggleDiv1('viewmap'); toggleDiv2('hidemap');">View map</a>
        </div>
    </body>
</html>

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任何帮助将非常感激,

昆廷

Answer 1

小智 71

我今天遇到了同样的问题,并最终在官方的Google Maps Javascript API V3参考资料中找到了这个问题:

当div改变大小时,开发人员应该在地图上触发此事件:google.maps.event.trigger(map, 'resize').

作为display:none等同于离开<div>用大小为0,改变它display:block实际上成为大小的变化,使得因此,有必要触发地图调整事件.

对我来说就像一个魅力.

更新2018-05-22

使用Maps JavaScript API版本3.32中的新渲染器版本,resize事件不再是Map类的一部分.

文件说明

调整地图大小后,地图中心将固定

全屏控制现在保留了中心.

不再需要手动触发resize事件.

来源:https://developers.google.com/maps/documentation/javascript/new-renderer

google.maps.event.trigger(map, "resize"); 从版本3.32开始没有任何影响

Answer 2

小智 42

使用jquery选项卡也会出现此问题,而不是应用"display:none",您可以尝试以这种方式隐藏地图:

在尝试隐藏地图时添加以下样式,而不是使用display:none

position: absolute;
left: -100%;

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您还可以添加以下转换:transition:left 1s ease;

您可以尝试使用谷歌事件监听器在显示地图后触发它:

<script type="text/javascript">
    var map; //I placed here the map variable so other functions can see it.
    var latlng = new google.maps.LatLng(-27.999673,153.42855); 
    // in order to center again the map...
    function initialize() {

        var myOptions = {
            zoom: 15,
            center: latlng,
            mapTypeId: google.maps.MapTypeId.ROADMAP,
            mapTypeControl: true,
            mapTypeControlOptions: {
                style: google.maps.MapTypeControlStyle.DROPDOWN_MENU
            }
        };

        map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);

        var contentString = 'blah';

        var infowindow = new google.maps.InfoWindow({
            content: contentString
        });

        var marker = new google.maps.Marker({
            position: latlng, 
            map: map
        });

        google.maps.event.addListener(marker, 'click', function() {
            infowindow.open(map,marker);
        });
    }

    google.maps.event.addDomListener(window, 'load', initialize);
</script>
<script type="text/javascript">
    function toggleDiv1(viewmap){
        if(document.getElementById(viewmap).style.display == 'block'){
            document.getElementById(viewmap).style.display = 'none';
        }else{
            document.getElementById(viewmap).style.display = 'block';
            //here is where your map is being displayed again, try here
            // to trigger the resize event.
            google.maps.event.trigger(map, 'resize');
            map.setCenter(latlng);
        }
    }
    function toggleDiv2(hidemap){
        if(document.getElementById(hidemap).style.display == 'none'){
            document.getElementById(hidemap).style.display = 'block';
        }else{
            document.getElementById(hidemap).style.display = 'none';
        }
    }
</script>

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Answer 3

Mic*_*hal 12

地图大小的问题是它需要知道它渲染的div的大小.当您的div被隐藏时,您正在初始化文档加载上的地图,因此地图无法正确计算其大小 - 要解决此问题,您只需在首次显示div(而不是onload)时对其进行初始化.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 TRANSITIONAL//EN">
<html>
    <head>
        <title></title>
        <style type="text/css">
            #viewmap {
                position:relative;
                width:944px;
                float:left;
                display:none;
            }
            #hidemap {
                position:relative;
                width:944px;
                float:left;
                display:block;
            }
            #map_canvas {
                position:relative;
                float:left;
                width:944px;
                height:300px;
            }
        </style>
        <script type="text/javascript"
            src="http://maps.google.com/maps/api/js?v=3.2&sensor=false">
        </script>
        <script type="text/javascript">
        //your global map object
        var map = null;
            function initialize() {
                var latlng = new google.maps.LatLng(-27.999673,153.42855);
                var myOptions = {
                    zoom: 15,
                    center: latlng,
                    mapTypeId: google.maps.MapTypeId.ROADMAP,
                    mapTypeControl: true,
                    mapTypeControlOptions: {
                        style: google.maps.MapTypeControlStyle.DROPDOWN_MENU
                    }
                };

                map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);

                var contentString = 'blah';

                var infowindow = new google.maps.InfoWindow({
                    content: contentString
                });

                var marker = new google.maps.Marker({
                    position: latlng, 
                    map: map
                });

                google.maps.event.addListener(marker, 'click', function() {
                    infowindow.open(map,marker);
                });

            }


            function toggleDiv1(viewmap){
                if(document.getElementById(viewmap).style.display == 'block'){
                    document.getElementById(viewmap).style.display = 'none';
                }else{
                    document.getElementById(viewmap).style.display = 'block';
                    //check if map object exists (it is created by you initialize function), if not initialize it
                    if (!map) {
                    initialize();

                    }
                }
            }
            function toggleDiv2(hidemap){
                if(document.getElementById(hidemap).style.display == 'none'){
                    document.getElementById(hidemap).style.display = 'block';
                }else{
                    document.getElementById(hidemap).style.display = 'none';
                }
            }
        </script>
    </head>
    <body>
        <div id="viewmap">
            <a href="#" onmousedown="toggleDiv1('viewmap'); toggleDiv2('hidemap');">Hide map</a>
            <div id="map_canvas"></div>
        </div>
        <div id="hidemap">
            <a href="#" onmousedown="toggleDiv1('viewmap'); toggleDiv2('hidemap');">View map</a>
        </div>
    </body>
</html>

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