模式中的传单和Mapbox无法正确显示 [英] Leaflet and Mapbox in modal not displaying properly

问题描述

存在使用Leaflet的Mapbox无法在模式中正确显示的问题.

Having a problem where Mapbox using Leaflet is not displaying correctly in a modal.

地图和标记位于左上角，其余图块为空白.

The map and marker are in the upper left and the rest of the tiles are blank.

我直接在页面而不是模式中尝试了代码，并且可以正常工作...

I have tried the code directly in a page and not a modal and it works...

<style>
    #mapid { height: 300px; }
</style>
<div id="mapid"></div>
<script>
    var mymap = L.map('mapid').setView([<?= $return['latitude']; ?>, <?= $return['longitude']; ?>], 13);
    //var mymap  =  L.Map('mapid', { center: new L.LatLng(<?= $return['latitude']; ?>, <?= $return['longitude']; ?>]), zoom: 15, layers: [nexrad], zoomControl: true });
    L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token=<?= $MapBoxToken ?>', {
        attribution: '&copy; <a href="http://mapbox.com">Mapbox</a>, &copy; <a href="http://openstreetmap.org">OpenStreetMap</a>',
        maxZoom: 20,
        id: 'mapbox.streets',
        accessToken: '<?= $MapBoxToken ?>'
    }).addTo(mymap);    
    var marker = L.marker([<?= $return['latitude']; ?>, <?= $return['longitude']; ?>]).addTo(mymap);
</script>

推荐答案

如

As explained in the linked post, having the map work when the browser window is resized is just a symptom of the issue. Leaflet listens to browser window resize event, and reads again the map viewport dimensions when it occurs, so that it can properly display tiles and center the view.

在幕后，Leaflet只需调用 map.invalidateSize() 调整大小事件.

Under the hood, Leaflet simply calls map.invalidateSize() on the resize event.

因此，针对您的情况的正确解决方案是不调整浏览器窗口的大小，但调用map.invalidateSize().

So the proper solution for your case is NOT to have the browser window be resized, but to call map.invalidateSize().

然后在加载地图后，但在打开模态后，不执行此操作，以使地图视口现在具有其最终尺寸.

And do that NOT after your map loads, but after your modal is opened, so that the map viewport now has its final dimensions.

由于您在问题中添加了Bootstrap标记，因此我想您的模态是使用Bootstrap构建的.在这种情况下，您可以收听 "shown.bs.modal" 事件:

Since you added the Bootstrap tag to your question, I guess your modal is built using Bootstrap. In that case, you can listen to the "shown.bs.modal" event:

var map = L.map('map').setView([48.86, 2.35], 11);

L.marker([48.86, 2.35]).addTo(map);

L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
  attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
}).addTo(map);

// Comment out the below code to see the difference.
$('#myModal').on('shown.bs.modal', function() {
  map.invalidateSize();
});

<!-- Bootstrap assets -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>

<!-- Leaflet assets -->
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.3.1/dist/leaflet.css" integrity="sha512-Rksm5RenBEKSKFjgI3a41vrjkw4EVPlJ3+OiI65vTjIdo9brlAacEuKOiQ5OFh7cOI1bkDwLqdLw3Zg0cRJAAQ==" crossorigin="" />
<script src="https://unpkg.com/leaflet@1.3.1/dist/leaflet-src.js" integrity="sha512-IkGU/uDhB9u9F8k+2OsA6XXoowIhOuQL1NTgNZHY1nkURnqEGlDZq3GsfmdJdKFe1k1zOc6YU2K7qY+hF9AodA==" crossorigin=""></script>

<!-- Button trigger modal -->
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
  Launch demo modal that contains the map container.
</button>

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title" id="myModalLabel">Modal title</h4>
      </div>
      <div class="modal-body">

        <!-- map container -->
        <div id="map" style="height: 180px"></div>

      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-primary" data-dismiss="modal">Close</button>
      </div>
    </div>
  </div>
</div>

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