恢復對谷歌刪除標記映射

Question

我有多個標記的地圖，我已經幾乎實現了一種οf在地圖上的過濾器。當我點擊標記時，標記消失，並且一個按鈕顯示在地圖的頂部以恢復標記 - 這是不起作用的。我試圖在用戶點擊按鈕時重新創建標記，但似乎不起作用。有任何想法嗎？這裏是我的代碼：

function getCrimeByLocation(lat, lng, date){ 
if(date == null){ 
    var d = new Date(); 
    date = d.getFullYear() + '-' + (d.getMonth()+1); 
    //hardcoding as of now as jan 2014 data is not there, remove when req 
    date = "2013-02"; 
} 
$.getJSON("http://data.police.uk/api/crimes-street/all-crime?lat="+lat+"&lng="+lng+"&date="+date, function(data) { 
    while(markers.length > 0){ 
     markers.pop().setMap(null); 
    } 

    //marking the requested position 
    addMyPositionMarker(lat, lng); 
    //loop through the data 
    $.each(data, function(key, val) { 
     //var myLatlng = new google.maps.LatLng(val.location.latitude, val.location.longitude); 
     //create the markers on the map 
     var marker = new google.maps.Marker({ 
      position: new google.maps.LatLng(val.location.latitude, val.location.longitude), 
      map: map, 
      animation: google.maps.Animation.DROP, 
      draggable: false, 
      title: val.location.street.name 
     }); 
     markers.push(marker); // saving markers for reference, so that we can remove them later; 
     //'click' event to delete the markers from the map 
     google.maps.event.addListener(marker, 'click', function(){ 
      for(var i = 0; i < markers.length; i++){ 
       markers[i].setMap(null); 
      } 
      markers.length = 0; 
      //Once the markers are deleted, the button shows up 
      antisocial.show(); 
     }); 
    }); 

    var antisocial = $('<button>Anti-social behaviour</button>').hide().click(function(){ 
     //Here I tried to restore the markers, but it doesn't work 
     var marker = new google.maps.Marker({ 
      position: new google.maps.LatLng(val.location.latitude, val.location.longitude), 
      map: map, 
      animation: google.maps.Animation.DROP, 
      draggable: false, 
      title: val.location.street.name 
     }); 
     markers.push(marker); 
     //hide the button once it's clicked 
     antisocial.hide(); 
    }); 
    $('#map-canvas').before(antisocial); 

    if(markers.length > 0){ 
     fitBoundsMap(); 
    } 
}); 
} 

感謝。

Answer 1

我想你只需要設置地圖爲null，以隱藏標記和地圖重置回原來的地圖再次顯示它們。