讓Google Map Marker實時工作

-1

我希望我的標記能夠實時更新他們的位置 - 但這並不像它第一次看到的那麼容易。希望你們能幫忙。讓Google Map Marker實時工作

<?php 

     $latitude="55.0567842"; 
     $longitude="-1.599155200000041"; 

     $name="Jim"; 
     $lat="55.0567842"; 
     $long="-1.599155200000041"; 

echo(" 

<!DOCTYPE html> 
<html> 
    <head> 


    <style> 

     #map { 
     height: 100%; 
     } 

     html, body { 
     height: 100%; 
     margin: 0; 
     padding: 0; 
     } 
    </style> 



    </head> 

    <body onload='refreshDiv()'> 
    <div id='map'></div>"); 



    echo(" 
    <script> 

    function initMap() { 
    var map = new google.maps.Map(document.getElementById('map'), { 
      zoom: 10, 
      center: {lat: ".$latitude.", lng: ".$longitude."} 
     }); 


// reloaded function every second  
    function refreshDiv() 
    { 
     setMarkers(map); 
     var refresher = setTimeout('refreshDiv()', 1000); 
    } 

     } 




     function setMarkers(map) { 
     var beaches = [['".$name."', ".$lat.",".$long."],]; 
     // Adds markers to the map. 

     // Marker sizes are expressed as a Size of X,Y where the origin of the image 
     // (0,0) is located in the top left of the image. 

     // Origins, anchor positions and coordinates of the marker increase in the X 
     // direction to the right and in the Y direction down. 
     var image = { 
      url: '1.png', 
      // This marker is 20 pixels wide by 32 pixels high. 
      size: new google.maps.Size(20, 32), 
      // The origin for this image is (0, 0). 
      origin: new google.maps.Point(0, 0), 
      // The anchor for this image is the base of the flagpole at (0, 32). 
      anchor: new google.maps.Point(0, 32) 
     }; 
     // Shapes define the clickable region of the icon. The type defines an HTML 
     // <area> element 'poly' which traces out a polygon as a series of X,Y points. 
     // The final coordinate closes the poly by connecting to the first coordinate. 
     var shape = { 
      coords: [1, 1, 1, 20, 18, 20, 18, 1], 
      type: 'poly' 
     }; 
     for (var i = 0; i < beaches.length; i++) { 
      var beach = beaches[i]; 
      var marker = new google.maps.Marker({ 
      position: {lat: beach[1], lng: beach[2]}, 
      map: map, 
      icon: image, 
      shape: shape, 
      title: beach[0], 
      zIndex: beach[3] 
      }); 
     } 
     } 
    </script> "); 


echo(" 
    <script async defer 
    src='https://maps.googleapis.com/maps/api/js?key=AIzaSyBVQaENEYHY2g-mRhD6_tj1cSK8DhQoqHI&callback=initMap'> 
    </script> 

    </body> 
</html> "); 
?>

正如我所說的問題可能存在於initMap（）。有沒有辦法在加載initMap（）後重新加載標記。

來源

2017-04-15 user7763438

var markerStore = {}; // Variable Decleration for Storing Markers on First loop 
// Generate map on Screen 
    function myMap() { 
     var latlng = new google.maps.LatLng(24.946218, 67.005615); 
      var myOptions = { 
       zoom: 10, 
       center: latlng, 
       mapTypeId: google.maps.MapTypeId.ROADMAP, 
       mapTypeControl: false 
      }; 

     map = new google.maps.Map(document.getElementById("map"),myOptions); 
     var infowindow = new google.maps.InfoWindow(), marker, lat, lng; 

//Update Markers on Map after interval 
     setInterval(function(){ 
     //Get JSON from PHP MYSQL Data format will be in comments 
      jQuery.getJSON('/cr/getloc.php', function(data){ 
      for(var n in data){ 
       lat = data[ n ].lat; 
       lng=data[ n ].lng; 
       number=data[ n ].number; 
       platenumber=data[ n ].platenumber; 
       id=data[ n ].id; 

      if(markerStore.hasOwnProperty(id)) { 
       // Now this will just update markers only on map 
       markerStore[id].setPosition(new google.maps.LatLng(lat,lng)); 
      } else { 
       // First Draw Markers Then Update if MarkerStore has own Property as defined in bottom 
       marker = new google.maps.Marker({ 
       position: new google.maps.LatLng(lat,lng), 
       name:platenumber, 
       label:id, 
       id:id, 
       title:id, 
       map: map, 
      }); 

      google.maps.event.addListener(marker, 'click', function(e){ 
       infowindow.setContent(this.platenumber); 
       infowindow.open(map, this); 
      }.bind(marker)); 
       markerStore[id] = marker; 
      } 
      } 

      }); 


     }, 6000);

JSON DATA FROM PHP

[{ 「號」：「+ 923333018444」，「platenumber」：「KIG-5852」，「LAT」：「25.144211」，「LNG」：「67.125094」，「ID」爲「1」}，{ 「號」：「+ 923323027999」，「platenumber」：「KEI-4999」，「LAT」：「25.006551」，「LNG」：「67.354573」，」 ID「：」2「}]

來源

2017-04-16 08:54:49 Aadeelyoo

試過這段代碼，但無法開始工作。你能幫忙嗎？ – user7763438

你能顯示你的錯誤嗎？ – Aadeelyoo

讓Google Map Marker實時工作

回答

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