如何从Google Version Maps中的拖拽标记获取格式化地址
如何从Google Version Maps中的拖拽标记获取格式化地址
提问于 2012-10-11 04:45:19
我做了一个谷歌地图，可以让你在文本字段中输入地址。然后，它将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，当拖动该标记时，将显示经纬度和地理位置地址。
我不想显示上面的地址，而是希望当您拖动标记以在底角显示标记的地址和文本字段中输入的地址时。
我已经尝试了许多方法，但都没有用。lonlat.formatted_address是我尝试过的一些东西之一。
我从Google那里得到了推荐信
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>回答 1
Stack Overflow用户
回答已采纳
发布于 2012-10-11 06:21:30
您需要使用反向地理编码服务(如您所链接的示例中所示)来检索格式化的地址。
该示例中的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dragend侦听器：
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)
代码片段：
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>
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/12828044
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