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我遵循了本教程http://www.mobiledevelopersolutions.com/home/start/twominutetutorials/tmt4part1,但我遇到了一个问题。地理位置在默认的 Android 浏览器上不起作用。它适用于 Chrome、IE 和 Android 版 Chrome。但不是默认的 Android 浏览器。

我想我必须把 { enableHighAccuracy: true } 放在我无法弄清楚的地方。

这是代码:

var mapdata = { destination: new google.maps.LatLng(51.3704888, 6.1723862) };

// Home page
$('#page-home').live("pageinit", function() {
    $('#map_square').gmap(
        { 'center' : mapdata.destination, 
          'zoom' : 12, 
          'mapTypeControl' : false, 
          'navigationControl' : false,
          'streetViewControl' : false 
        })
        .bind('init', function(evt, map) { 
            $('#map_square').gmap('addMarker', 
                { 'position': map.getCenter(), 
                  'animation' : google.maps.Animation.DROP
 });                                                                                                                                                                                                               
        });
    $('#map_square').click( function() { 
        $.mobile.changePage($('#page-map'), {});
    });
});

function fadingMsg (locMsg) {
    $("<div class='ui-overlay-shadow ui-body-e ui-corner-all fading-msg'>" + locMsg + "</div>")
    .css({ "display": "block", "opacity": 0.9, "top": $(window).scrollTop() + 100 })
    .appendTo( $.mobile.pageContainer )
    .delay( 2200 )
    .fadeOut( 1000, function(){
        $(this).remove();
   });
}

//Create the map then make 'displayDirections' request
$('#page-map').live("pageinit", function() {
    $('#map_canvas').gmap({'center' : mapdata.destination, 
        'mapTypeControl' : true, 
        'navigationControl' : true,
        'navigationControlOptions' : {'position':google.maps.ControlPosition.LEFT_TOP}
        })
    .bind('init', function() {
        $('.refresh').trigger('tap');        
    });
});

$('#page-map').live("pageshow", function() {
    $('#map_canvas').gmap('refresh');
});

// Request display of directions, requires jquery.ui.map.services.js
var toggleval = true; // used for test case: static locations
$('.refresh').live("tap", function() {


             // START: Tracking location with device geolocation
    if ( navigator.geolocation ) { 
        fadingMsg('Using device geolocation to get current position.');


        navigator.geolocation.getCurrentPosition  ( 
            function(position )  {
                $('#map_canvas').gmap('displayDirections', 
                { 'origin' : new google.maps.LatLng(position.coords.latitude, position.coords.longitude), 
                  'destination' : mapdata.destination, 'travelMode' : google.maps.DirectionsTravelMode.DRIVING},
                { 'panel' : document.getElementById('dir_panel')},
                      function (result, status) {
                          if (status === 'OK') {
                              var center = result.routes[0].bounds.getCenter();
                              $('#map_canvas').gmap('option', 'center', center);
                              $('#map_canvas').gmap('refresh')
                          } else {
                              alert('Unable to get route');
                          }
                      }
                   );         
                }, 
                function(){ 
                    alert('Unable to get location');
                    $.mobile.changePage($('#page-home'), {   }); 

                }); 
            } else {
                alert('Unable to get location.');
            }           
    // END: Tracking location with device geolocation
    $(this).removeClass($.mobile.activeBtnClass);
    return false;
});


// Go to map page to see instruction detail (zoom) on map page
$('#dir_panel').live("tap", function() {
    $.mobile.changePage($('#page-map'), {});
});

// Briefly show hint on using instruction tap/zoom
$('#page-dir').live("pageshow", function() {
    fadingMsg("Tap any instruction<br/>to see details on map");
});

谢谢你的帮助!

4

2 回答 2

2

这就是您可能需要调用的方式。

navigator.geolocation.getCurrentPosition(successCallback,
                                         errorCallback,
                                         {maximumAge:Infinity, timeout:0, enableHighAccuracy: true });

当然,您可以在此处更改 maximumAge 和超时值,但这是您设置 enableHighAccuracy 的地方。因此,只需在您的 getcurrentposition 方法中将其指定为第三个参数。

编辑 :

    navigator.geolocation.getCurrentPosition  ( 
        function(position )  {
            $('#map_canvas').gmap('displayDirections', 
            { 'origin' : new google.maps.LatLng(position.coords.latitude, position.coords.longitude), 
              'destination' : mapdata.destination, 'travelMode' : google.maps.DirectionsTravelMode.DRIVING},
            { 'panel' : document.getElementById('dir_panel')},
                  function (result, status) {
                      if (status === 'OK') {
                          var center = result.routes[0].bounds.getCenter();
                          $('#map_canvas').gmap('option', 'center', center);
                          $('#map_canvas').gmap('refresh')
                      } else {
                          alert('Unable to get route');
                      }
                  }
               );         
            }, 
            function(){ 
                alert('Unable to get location');
                $.mobile.changePage($('#page-home'), {   }); 

            }, 
    { enableHighAccuracy: true } ); 
于 2012-05-03T10:23:19.790 回答
-1

既然你想使用地理定位,你有没有把传感器设置为真?因为如果你把它设置为假,它就不起作用了。

<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=true"></script>
于 2013-03-16T02:36:30.217 回答