Showing a Google Map in a modal created with Twitter Bootstrap

Question

I\'m trying to insert a Google map into a modal using Twitter Bootstrap. The modal shows up with the shape of the map present, but only part of the map is displayed, the res

Answer 1

I have fixed with solution:

$('#myId').on('shown.bs.modal', function () { 
    initializeMap() // with initializeMap function get map.
});

//event shown.bs.modal on modal bootstrap will show after modal show, not use show.bs.modal because it will call before modal show.

Answer 2

    this works for me 
    **<!-- Modal -->**
    <div class="modal fade" id="myModal" role="dialog">
        <div class="modal-dialog">

            <!-- Modal content-->
            <div class="modal-content">
                <div class="modal-header">
                    <button type="button" class="close" data-dismiss="modal">&times;</button>
                    <h4 class="modal-title">Google Maps</h4>
                </div>
                <div class="modal-body">

                    <div id="map_canvas" style="width:auto; height: 500px;"></div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                </div>
            </div>
        </div>
    </div>


**Button**
 <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#myModal">View Map</button>

**javascript**
<script type="text/javascript">
    function initializeMap() {
        var mapOptions = {
            center: new google.maps.LatLng(51.219987, 4.396237),
            zoom: 12,
            mapTypeId: google.maps.MapTypeId.HYBRID
        };
        var map = new google.maps.Map(document.getElementById("map_canvas"),
          mapOptions);
        var marker = new google.maps.Marker({
            position: new google.maps.LatLng(51.219987, 4.396237)
        });
        marker.setMap(map);
    }

    //show map on modal
    $('#myModal').on('shown.bs.modal', function () {
        initializeMap();
    });

</script>

hope this will help

Answer 3

the following code work perfectly fine for bootstrap 3

$("#mapModal").on("shown.bs.modal", function () {initialize();});

Answer 4

When using Bootstrap 3 you need to use what is provided within their documentation i.e. instead of 'shown' use 'shown.bs.modal'

Example:

 $('#modal').on('shown.bs.modal', function () { 
     initialiseMap();
 });

Answer 5

Google Maps indeed displays "Grey" area's when it's placed inside a dynamic element (for example: One that resizes, fades etc.). You're right about triggering the "resize" function, which should be called once the animation is complete (the shown.bs.modal event in Bootstrap 3 or the shown event in Bootstrap 2):

$("#myModal").on("shown.bs.modal", function () {
    google.maps.event.trigger(map, "resize");
});

In Bootstrap 2, you will do:

$('#myModal').on('shown', function () {
    google.maps.event.trigger(map, "resize");
});

(where map is the variable name of your map (see Google Maps documentation for further details), and #myModal the ID from your element).

UPDATE 2018-05-22

With a new renderer release in version 3.32 of Maps JavaScript API the resize event is no longer a part of Map class.

The documentation states

When the map is resized, the map center is fixed

• The full-screen control now preserves center.

• There is no longer any need to trigger the resize event manually.

source: https://developers.google.com/maps/documentation/javascript/new-renderer

google.maps.event.trigger(map, "resize"); doesn't have any effect starting from version 3.32

Answer 6

Showing the map correctly and centered

I wanted to point out a few modifications I made, based on the original answer, to make it work with Bootstrap 3 (check about modals usage).

// Resize map to show on a Bootstrap's modal
$('#map-modal').on('shown.bs.modal', function() {
  var currentCenter = map.getCenter();  // Get current center before resizing
  google.maps.event.trigger(map, "resize");
  map.setCenter(currentCenter); // Re-set previous center
});

In this case, I also take care of recentering the map, based on this question suggested in Jan-Henk's comment to the first answer.