Question

我有一个下拉列表。当我从下拉列表中选择10英里之类的值时，我的Google地图应该显示在该地点10英里范围内。我该怎么做？

<script src="https://maps.googleapis.com/maps/api/js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
      function myMap() {
            var myCenter = new google.maps.LatLng(56.1304, -106.3468);
            var mapProp = { center: myCenter, zoom: 6, scrollwheel: true, draggable: true, mapTypeId: google.maps.MapTypeId.ROADMAP };
            var map = new google.maps.Map(document.getElementById("googleMap"), mapProp);

            marker.setMap(map);
        }

<div id="googleMap" style="height: 100%; width: 100%; position: absolute; top: 0px; left: 0px; "></div>
<div id="searchcontainer" style="position: absolute; z-index: 0; left: 450px; top: 0px;">
    <select id="range" name="range">
        <option value="0">Current Map</option>
        <option value="5">5 Miles</option>
        <option value="10">10 Miles</option>
        <option value="15">15 Miles</option>
        <option value="20">20 Miles</option>
        <option value="25">25 Miles</option>
        <option value="50">50 Miles</option>
        <option value="100">100 Miles</option>
        <option value="250">250 Miles</option>
        <option value="500">500 Miles</option>
    </select>

</div>

Answer 1

一种选择是创建具有正确中心和所需半径的google.maps.Circle，然后调用map.fitBounds(circle.getBounds())（其中circle是圆）。

（请注意，圆的半径以米为单位，因此您需要将英里输入转换为米）。

var METERS_PER_MILE = 1609.34;

function myMap() {
  var myCenter = new google.maps.LatLng(56.1304, -106.3468);
  var mapProp = {
    center: myCenter,
    zoom: 6,
    scrollwheel: true,
    draggable: true,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  };
  var map = new google.maps.Map(document.getElementById("googleMap"), mapProp);
  var circle;
  google.maps.event.addDomListener(document.getElementById('range'), 'change', function(evt) {
    var value = $("#range").val();
    if (circle && circle.setMap) circle.setMap(null);
    circle = new google.maps.Circle({
      center: myCenter,
      radius: value * METERS_PER_MILE,
      map: map
    });
    map.fitBounds(circle.getBounds());
  });
}
google.maps.event.addDomListener(window, 'load', myMap);

html,
body {
  height: 100%;
  width: 100%;
  padding: 0px;
  margin: 0px;
}

#googleMap {
  height: 90%;
}

<script src="https://maps.googleapis.com/maps/api/js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="googleMap"></div>
<div id="searchcontainer" style="position: absolute; z-index: 0; left: 450px; top: 0px;">
  <select id="range" name="range">
    <option value="0">Current Map</option>
    <option value="5">5 Miles</option>
    <option value="10">10 Miles</option>
    <option value="15">15 Miles</option>
    <option value="20">20 Miles</option>
    <option value="25">25 Miles</option>
    <option value="50">50 Miles</option>
    <option value="100">100 Miles</option>
    <option value="250">250 Miles</option>
    <option value="500">500 Miles</option>
  </select>
</div>

Answer 2

您不需要在地图中居中。您可能要做的就是添加一个侦听器，并相应地更改setZoom，但是您需要根据Google Maps API文档更改范围值而不是文本来处理最大缩放值。

var range = document.getElementById("range");
      range.addEventListener("change", function() {
        map.setZoom(range.value);
      });

Answer 3

<select id="range" name="range">
    <option value="0">Current Map</option>
    <option value="5">5 Miles</option>
    <option value="10">10 Miles</option>
    <option value="15">15 Miles</option>
    <option value="20">20 Miles</option>
    <option value="25">25 Miles</option>
    <option value="50">50 Miles</option>
    <option value="100">100 Miles</option>
    <option value="250">250 Miles</option>
    <option value="500">500 Miles</option>
  </select>
I do not want this i just want default 10 miles what should i need to do

如何显示基于选定半径的谷歌地图

3 个答案: