空白的空间在地理编码样本应用程序

Blank space in Geocoding sample app

本文关键字：编码 样本 应用程序 空间 空白      更新时间：2023-09-26

为什么如果我从https://developers.google.com/maps/documentation/javascript/examples/map-geolocation复制代码，当我启动应用程序时，我看到所有空白?我使用模拟器Nexus9.

代码:

<!DOCTYPE html>
<html>
  <head>
    <title>Geolocation</title>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <style>
      html, body, #map-canvas {
        height: 100%;
        margin: 0px;
        padding: 0px
      }
    </style>
    <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&signed_in=true"></script>
    <script>
// Note: This example requires that you consent to location sharing when
// prompted by your browser. If you see a blank space instead of the map, this
// is probably because you have denied permission for location sharing.
var map;
function initialize() {
  var mapOptions = {
    zoom: 6
  };
  map = new google.maps.Map(document.getElementById('map-canvas'),
      mapOptions);
  // Try HTML5 geolocation
  if(navigator.geolocation) {
    navigator.geolocation.getCurrentPosition(function(position) {
      var pos = new google.maps.LatLng(position.coords.latitude,
                                       position.coords.longitude);
      var infowindow = new google.maps.InfoWindow({
        map: map,
        position: pos,
        content: 'Location found using HTML5.'
      });
      map.setCenter(pos);
    }, function() {
      handleNoGeolocation(true);
    });
  } else {
    // Browser doesn't support Geolocation
    handleNoGeolocation(false);
  }
}
function handleNoGeolocation(errorFlag) {
  if (errorFlag) {
    var content = 'Error: The Geolocation service failed.';
  } else {
    var content = 'Error: Your browser doesn''t support geolocation.';
  }
  var options = {
    map: map,
    position: new google.maps.LatLng(60, 105),
    content: content
  };
  var infowindow = new google.maps.InfoWindow(options);
  map.setCenter(options.position);
}
google.maps.event.addDomListener(window, 'load', initialize);
    </script>
  </head>
  <body>
    <div id="map-canvas"></div>
  </body>
</html>

尝试修改:

<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&signed_in=true"></script>

: 

<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=set_to_true_or_false"></script>
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