InfoWindow & GeoCoder

Question

我有一个问题，获取经度和纬度值的地理编码，然后显示相关的地址在一个信息窗口。我尝试过多种方法，但都没有成功，但我必须承认，我对javascript不太熟悉。我不断地以价值的形式回来：“未定”。

下面是我的代码片段，其中显示了主要组件：

 `var position = new google.maps.LatLng(position.coords.latitude, position.coords.longitude);     var geocoder = new google.maps.Geocoder();     var address;`

if (geocoder) {
    geocoder.geocode({ 'latLng': position }, function (results, status) {       
       if (status == google.maps.GeocoderStatus.OK) {
            address = (results[0].formatted_address);
       } else { 
            address = (position.coords.latitude + ', ' +  position.coords.longitude);
       }           
    }); 
}

var info = 
          ('<span class="txt_bld">Location:</span> '         + address                      + '<br />' +
          '<span class="txt_bld">Accuracy:</span> '          + position.coords.accuracy     + '<br />' +
          '<span class="txt_bld">Time:</span> '              +  position.timestamp);

​

有人能告诉我如何把位置上的lat/lng翻译成一个地址，以便在我的贴图中显示出来吗？

编辑

经修订的守则：

  `var position = new google.maps.LatLng(position.coords.latitude,position.coords.longitude);     var geocoder = new google.maps.Geocoder();     var infowindow = new google.maps.InfoWindow();     var address;`

if (geocoder) {
    geocoder.geocode({ 'latLng': position }, function (results, status) {       
       if (status == google.maps.GeocoderStatus.OK) {
            address == (results[0].formatted_address);
       } else { 
            address == (position.coords.latitude + ', ' +  position.coords.longitude);
       }    
       var info = 
          ('<span class="txt_bld">Location:</span> '         + address                      + '<br />' +
          '<span class="txt_bld">Accuracy:</span> '          + position.coords.accuracy     + '<br />' +
          '<span class="txt_bld">Time:</span> '              + position.timestamp); 

        if(!infowindow){
            infowindow = new google.maps.InfoWindow({
                content: info
            });
        }else{
            infowindow.setContent(info);
        }

        google.maps.event.addListener(marker, 'click', function() {
          infowindow.open(map,marker);    
          setTimeout(function () { 
            infowindow.close(); 
          }, 5000);
        });            
    }); 
}

​

if(!marker){ marker = new google.maps.Marker({ position: position, map: this.map, icon: markericon, draggable:false }); }else{ marker.setPosition(point);

 `}`

Answer 1

地理编码器是异步的。您需要使用它在回调函数中返回的数据。类似的东西(未经测试)：

var position = new google.maps.LatLng(position.coords.latitude,position.coords.longitude); 
var geocoder = new google.maps.Geocoder();
var infowindow = new google.maps.InfoWindow();
var address;

if (geocoder) {
  geocoder.geocode({ 'latLng': position }, function (results, status) {       
   if (status == google.maps.GeocoderStatus.OK) {
        address = (results[0].formatted_address);
   } else { 
        address = (position.coords.latitude + ', ' +  position.coords.longitude);
   }           
   var info = 
      ('<span class="txt_bld">Location:</span> '         + address
       + '<br />' +
      '<span class="txt_bld">Accuracy:</span> '          + position.coords.accuracy
      + '<br />' +
      '<span class="txt_bld">Time:</span> '              +  position.timestamp);
    infowindow.setContent(info);
    infowindow.setPosition(position);
    infowindow.open(map);
  }); 
}

工作实例

Answer 2

我们正在使用地理编码器获得Lat long的地址，因为我们没有Lat long，所以我们需要通过地理编码器找到Lat long。如果我们有Lat长坐标，那么我们可以直接使用

​

 var position = new google.maps.LatLng(markers[i][1], markers[i][2]);
            bounds.extend(position);
            marker = new google.maps.Marker({
                position: position,
                map: map,
                title: markers[i][0]
            });

​