Question

我有一个google地图API工作得很好，但有时它不会产生结果，我只是得到可怕的灰色框（取决于输入的是什么地址）。

这是我的代码：

  var map;
  var geocoder;
  var markers = new Array();
  var firstLoc;

  function myGeocodeFirst() {
    geocoder = new google.maps.Geocoder();



    geocoder.geocode( {'address': "<?php echo stripslashes($centre_name) . ", " . preg_replace('#\s+#',',',trim($address)); ?>" },
      function(results, status) {
        if (status == google.maps.GeocoderStatus.OK) {
          firstLoc = results[0].geometry.location;

          map = new google.maps.Map(document.getElementById("map_canvas"),
          {
            center: firstLoc,
            zoom: 16,
            mapTypeId: google.maps.MapTypeId.ROADMAP
          });

        var marker = new google.maps.Marker({
          position: firstLoc,
          animation: google.maps.Animation.DROP,
          map: map,
          title: '<?php echo stripslashes($centre_name); ?>'
        });

        var contentString = '<div id="content">'+
          '<span id="firstHeading" class="firstHeading"><?php echo stripslashes($centre_name); ?></span>'+
          '</div>';

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

          var infowindow = new google.maps.InfoWindow({
              content: contentString
          });

        }
      }
    );
  }

如果第一个地址不提供地理位置，我希望尝试第二个地址。这可能吗？我根本无法在网上找到任何东西。

我尝试了各种各样的if / elses，但它似乎只是使代码崩溃

Answer 1

你只是检查一下＆＃34; OK＆＃34;以外的其他东西的返回状态。

查看api页面

https://developers.google.com/maps/documentation/geocoding/#StatusCodes

Answer 2

如果初始地址因ZERO_RESULTS而失败，这将对“New York，NY”进行地理编码。

  var addresses = ["<?php echo stripslashes($centre_name) . ", " . preg_replace('#\s+#',',',trim($address)); ?>", "New York, NY"]

function myGeocodeFirst() {
  geocoder = new google.maps.Geocoder();

  geocoder.geocode( {'address': addresses[0] }, geocoderCallback);
}
function geocoderCallback(results, status) {
  if (status == google.maps.GeocoderStatus.OK) {
    firstLoc = results[0].geometry.location;
    map = new google.maps.Map(document.getElementById("map_canvas"),
    {
      center: firstLoc,
      zoom: 16,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });
    var marker = new google.maps.Marker({
        position: firstLoc,
        animation: google.maps.Animation.DROP,
        map: map,
        title: '<?php echo stripslashes($centre_name); ?>'
    });

    var contentString = '<div id="content">'+
          '<span id="firstHeading" class="firstHeading"><?php echo stripslashes($centre_name); ?></span>'+
          '</div>';

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

     var infowindow = new google.maps.InfoWindow({
              content: contentString
     });

  } else if (status == google.maps.GeocoderStatus.ZERO_RESULTS) {
    geocoder.geocode( {'address': addresses[1] }, geocoderCallback);
  } else alert("Geocode failed, status:"+status);
}

jsfiddle

Google Maps API - 如果找不到一个地址，请尝试另一个地址

2 个答案: