如何从 Google 版本地图中的拖动标记中获取格式化地址
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【中文标题】如何从 Google 版本地图中的拖动标记中获取格式化地址【英文标题】：How to get the formatted address from a dragged marker in Google Version Maps 【发布时间】：2012-10-01 10:30:32 【问题描述】：我制作了一个 Google 地图，可让您在文本字段中输入地址。然后，它会将您导航到您在文本字段中输入的地址，并留下一个可拖动的标记，在拖动时会显示纬度和经度以及地理定位地址。
我不想显示上述地址，而是希望当您拖动标记以在底角显示标记的地址而不是文本字段中输入的地址。
我尝试了很多方法都无济于事。 lonlat[0].formatted_address 是我尝试过的一些事情之一。
我的推荐信来自Google
我的代码如下：
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no"/>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Google Maps javascript API v3 Example: Geocoding Simple</title>
<link href="http://code.google.com/apis/maps/documentation/javascript/examples/default.css" rel="stylesheet" type="text/css" />
<script src="http://maps.google.com/maps/api/js?v=3.5&sensor=false"></script>
<script type="text/javascript">
var geocoder;
var map;
function initialize()
geocoder = new google.maps.Geocoder();
var latlng = new google.maps.LatLng(-34.397, 150.644);
var myOptions =
zoom: 8,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
function codeAddress()
var address = document.getElementById("address").value;
geocoder.geocode( 'address': address, function(results, status)
if (status == google.maps.GeocoderStatus.OK)
map.setCenter(results[0].geometry.location);
var marker = new google.maps.Marker(
map: map,
draggable: true,
position: results[0].geometry.location
);
// Javascript//
google.maps.event.addListener(marker, 'dragend', function(evt)
document.getElementById('current').innerHTML = '<p>Marker dropped: Current Lat: ' + evt.latLng.lat().toFixed(3) + ' Current Lng: ' + evt.latLng.lng().toFixed(3) + '</p>';
);
google.maps.event.addListener(marker, 'dragstart', function(evt)
document.getElementById('current').innerHTML = '<p>Currently dragging marker...</p>';
);
google.maps.event.addListener(marker, 'dragend', function(evt)
document.getElementById('info').innerHTML = '<p>Address: ' + results[0].formatted_address + '</p>';
);
google.maps.event.addListener(marker, 'dragstart', function(evt)
document.getElementById('info').innerHTML = '<p>Currently dragging marker...</p>';
);
map.setCenter(marker.position);
marker.setMap(map);
else
alert("Geocode was not successful for the following reason: " + status);
);
</script>
<style type="text/css">
#controls
position: absolute;
bottom: 1em;
left: 100px;
width: 400px;
z-index: 20000;
padding: 0 0.5em 0.5em 0.5em;
html, body, #map_canvas
margin: 0;
width: 100%;
height: 100%;
</style>
</head>
<body onLoad="initialize()">
<div id="controls">
<input id="address" type="textbox" value="Sydney, NSW">
<input type="button" value="Geocode" onClick="codeAddress()">
<div id="current" style="background-color:white;">Nothing yet...</div>
<div id="info" style="background-color:white;">Address:</div>
</div>
</div>
<div id="map_canvas"></div>
</body>
</html>
【问题讨论】：
【参考方案1】：您需要使用反向地理编码服务（如您链接到的示例中所示）来检索格式化的地址。
该示例中的这段代码调用反向地理编码器并使用响应来显示它返回的 formatted_address：
function geocodePosition(pos)
geocoder.geocode(
latLng: pos
, function(responses)
if (responses && responses.length > 0)
updateMarkerAddress(responses[0].formatted_address);
else
updateMarkerAddress('Cannot determine address at this location.');
);
这是调用它的拖动监听器：
google.maps.event.addListener(marker, 'dragend', function()
updateMarkerStatus('Drag ended');
geocodePosition(marker.getPosition());
);
Here is a working example (puts the address received from the reverse geocoder in the infowindow)
代码 sn-p：
var geocoder;
var map;
var marker;
var infowindow = new google.maps.InfoWindow(
size: new google.maps.Size(150, 50)
);
function initialize()
geocoder = new google.maps.Geocoder();
var latlng = new google.maps.LatLng(-34.397, 150.644);
var mapOptions =
zoom: 8,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
map = new google.maps.Map(document.getElementById('map_canvas'), mapOptions);
google.maps.event.addListener(map, 'click', function()
infowindow.close();
);
function geocodePosition(pos)
geocoder.geocode(
latLng: pos
, function(responses)
if (responses && responses.length > 0)
marker.formatted_address = responses[0].formatted_address;
else
marker.formatted_address = 'Cannot determine address at this location.';
infowindow.setContent(marker.formatted_address + "<br>coordinates: " + marker.getPosition().toUrlValue(6));
infowindow.open(map, marker);
);
function codeAddress()
var address = document.getElementById('address').value;
geocoder.geocode(
'address': address
, function(results, status)
if (status == google.maps.GeocoderStatus.OK)
map.setCenter(results[0].geometry.location);
if (marker)
marker.setMap(null);
if (infowindow) infowindow.close();
marker = new google.maps.Marker(
map: map,
draggable: true,
position: results[0].geometry.location
);
google.maps.event.addListener(marker, 'dragend', function()
geocodePosition(marker.getPosition());
);
google.maps.event.addListener(marker, 'click', function()
if (marker.formatted_address)
infowindow.setContent(marker.formatted_address + "<br>coordinates: " + marker.getPosition().toUrlValue(6));
else
infowindow.setContent(address + "<br>coordinates: " + marker.getPosition().toUrlValue(6));
infowindow.open(map, marker);
);
google.maps.event.trigger(marker, 'click');
else
alert('Geocode was not successful for the following reason: ' + status);
);
google.maps.event.addDomListener(window, "load", initialize);html,
body
height: 100%;
margin: 0;
padding: 0;
#map_canvas
height: 100%;
@media print
html,
body
height: auto;
#map_canvas
height: 650px;
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<div>
<input id="address" type="textbox" value="Sydney, NSW">
<input type="button" value="Geocode" onclick="codeAddress()">
</div>
<div id="map_canvas" style="height:90%;top:30px"></div>【讨论】：
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