如何从GoogleVersionMaps中的拖放标记中获取格式化地址?

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我制作了Google地图,可让您将地址输入文本字段。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,以便在拖动时显示纬度和长度以及地理位置地址。

我不是显示上述地址,而是希望当你拖动标记在底角显示标记的地址,而不是从文本字段输入的地址。

我尝试了一些方法无济于事。lonlat [0] .formatted_address是我尝试过的一些东西。

我从Google获得了我的参考

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&amp;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>
提问于
用户回答回答于

你需要使用反向地理编码服务(如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由它返回的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监听器:

  google.maps.event.addListener(marker, 'dragend', function() {
    updateMarkerStatus('Drag ended');
    geocodePosition(marker.getPosition());
  });

这是一个工作示例(将从反向地理编码器收到的地址放入infowindow中)

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"></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>

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