切换Google地图标记 [英] Toggle Google Maps markers

问题描述

我从另一篇文章中抽取了一些代码来启动我，但试图让它做我需要的。我需要设置函数来显示/隐藏标记，当它们被检查时，还可以为标记类别分配合适的图标，例如Walk，Fish。

首先，我需要以获得显示隐藏功能，目前没有。

你可以在这里找到一个演示... http://jsfiddle.net/huMtu/

解决方案

问题在于 locations 变量是一个信息数组 - 它实际上并不是Google Map上的标记 - 这意味着您不能调用方法 setVisible（）就可以了。

你需要做的是将每个标记存储在一个单独的数组中，然后调用 setVisible 针对这个新数组元素的方法....我更新了JSFiddle - > http://jsfiddle.net/huMtu/1/

这里是JS部分：

  var markers = new Array（）; //用于存储谷歌标记
 var locations = [
 ['Bondi Beach'，'有些文本会出现在这里< br />文本'，'Walk'，-33.890542,151.274856,4] ，
 ['Coogee Beach'，'一些文字转到这里< br />文字'，'Fish'，-33.923036,151.259052,5]，
 ['Cronulla Beach'，'Some text goes这里< br />文字'，'鱼'，-34.028249,151.157507,3]，
 ['曼利海滩'，'一些文字在这里< br />文字'，'走'，-33.80010128657071 ，151.28747820854187,2]，
 ['Maroubra Beach'，'一些文字在这里< br />文字'，'Walk'，-33.950198,151.259302,1] 
]; 
 
 var map = new google.maps.Map（document.getElementById（'map'），{
 zoom：10，
 center：new google.maps.LatLng（ - 33.92,151.25），
 mapTypeId：google.maps.MapTypeId.ROADMAP 
}）; 
 
 var infowindow = new google.maps.InfoWindow（）; 
 
 var marker，i; 
 
（i = 0; i< locations.length; i ++）{
 marker = new google.maps.Marker（{
 position：new google.maps.LatLng （位置[i] [3]，位置[i] [4]），
 map：map 
}）; 
 
 markers.push（marker）; //将当前标记添加到数组以供后续处理
 
 google.maps.event.addListener（marker，'click'，（function（marker，i）{
 return function（） [location] [i] [2] +< br />+ locations [i] [1] {
 infowindow.setContent（locations [i] [0] +< ）; 
 infowindow.open（map，marker）; 
} 
}）（marker，i））; 
} 
 
 // ==显示特定类别的所有标记，并确保复选框被选中== 
 function show（category）{
 for（var （位置[i] [2] ==类别）{
 markers [i] .setVisible（true）; //调用marker的setVisible方法
} 
} 
} 
 
 // ==隐藏特定类别的所有标记，并确保复选框被清除== 
 function hide（category）{
 for（var i = 0; i< locations.length; i ++）{
 if（locations [i] [2] == category）{ 
 markers [i] .setVisible（false）; //调用marker的setVisible方法
} 
} 
} 
 
 // ==显示或隐藏最初的类别== 
 show（ 步行）; 
 hide（Fish）; 
  

工作小提琴（使用公开可用的图标）

I taken some code form another post to start me off but trying to get it to do what I need. I need to set up functions to show/hide markers when they are checked and also to assign appropriate icons to the marker categories ie, Walk, Fish.

To start I need to get the show hide functions to work which currently aren't.

You can find a demo here...http://jsfiddle.net/huMtu/

解决方案

The problem you have is that the locations variable is an array of information - its not actually the marker on the Google Map - that means that you cannot call the method setVisible() on it....

What you need to do is store each of the markers in a separate array then call the setVisible method against the element of this new array .... I have updated the JSFiddle -> http://jsfiddle.net/huMtu/1/

here is the JS part :

var markers = new Array(); // Used to store the google markers
    var locations = [
      ['Bondi Beach', 'Some text goes here<br />text', 'Walk', -33.890542, 151.274856, 4],
      ['Coogee Beach', 'Some text goes here<br />text', 'Fish', -33.923036, 151.259052, 5],
      ['Cronulla Beach', 'Some text goes here<br />text', 'Fish', -34.028249, 151.157507, 3],
      ['Manly Beach', 'Some text goes here<br />text', 'Walk', -33.80010128657071, 151.28747820854187, 2],
      ['Maroubra Beach', 'Some text goes here<br />text', 'Walk', -33.950198, 151.259302, 1]
    ];

    var map = new google.maps.Map(document.getElementById('map'), {
      zoom: 10,
      center: new google.maps.LatLng(-33.92, 151.25),
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });

    var infowindow = new google.maps.InfoWindow();

    var marker, i;

    for (i = 0; i < locations.length; i++) {  
      marker = new google.maps.Marker({
        position: new google.maps.LatLng(locations[i][3], locations[i][4]),
        map: map
      });

        markers.push(marker); // Add the current marker to the array for later processing

      google.maps.event.addListener(marker, 'click', (function(marker, i) {
        return function() {
          infowindow.setContent(locations[i][0]+"<br />"+locations[i][2]+"<br />"+locations[i][1]);
          infowindow.open(map, marker);
        }
      })(marker, i));
    }

    // == shows all markers of a particular category, and ensures the checkbox is checked ==
      function show(category) {
        for (var i=0; i<locations.length; i++) {
          if (locations[i][2] == category) {
            markers[i].setVisible(true); // call the setVisible method of the marker
          }
        }
      }

      // == hides all markers of a particular category, and ensures the checkbox is cleared ==
      function hide(category) {
        for (var i=0; i<locations.length; i++) {
          if (locations[i][2] == category) {
            markers[i].setVisible(false); // call the setVisible method of the marker
          }
        }
      }

      // == show or hide the categories initially ==
        show("Walk");
        hide("Fish");  

working fiddle (with publicly available icons)

这篇关于切换Google地图标记的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！