I have been trying to display a marker on the map when I click on a Button of my JavaFX application. So what happens is when I click on that button, I write the position in a JSON file, this file will be loaded in the html file that contains the map. The problem is that it works perfectly when I open the html page in the browser, but nothing happens in the JavaFX's web view, and I don't know why !
This is the html file:
<!DOCTYPE html>
<html>
<head>
<title>Simple Map</title>
<meta name="viewport" content="initial-scale=1.0">
<meta charset="utf-8">
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
/*#map {
height: 100%;
}*/
#map{width:100%;height:100%;margin:auto;}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
var map;
var marker;
// Multiple Markers
var markers = [];
var pos = {lat: 46.662388, lng: 0.3599617};
var itinerary_markers = [];
function initMap() {
var currentLat, currentLng;//Latitude et longtitude courante
$.ajax({
url: 'https://maps.googleapis.com/maps/api/geocode/json?address=My+ADDRESS&key=MY_KEY',
async: false,
dataType: 'json',
success: function (data) {
currentLat = data.results[0].geometry.location.lat;
currentLng = data.results[0].geometry.location.lng;
}
});
map = new google.maps.Map(document.getElementById('map'), {
center: {lat: currentLat, lng: currentLng},
zoom: 15,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
/*MARQUEUR*/
$.ajax({
async: false,
url: 'test.json',
data: "",
accepts:'application/json',
dataType: 'json',
success: function (data) {
for (var i = 0; i < data.hydrants.length; i++) {
markers.push( data.hydrants[i]);
}
}
});
var posi = new google.maps.LatLng(markers[0].Lat, markers[0].Lng);
marker = new google.maps.Marker({
position: posi,
map: map,
//title: markers[i][0]
title: markers[0].Name
});
}
</script>
<script
src="https://code.jquery.com/jquery-3.2.1.min.js"
integrity="sha256-hwg4gsxgFZhOsEEamdOYGBf13FyQuiTwlAQgxVSNgt4="
crossorigin="anonymous">
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=MY_KEY&callback=initMap&language=fr"
async defer></script>
</body>
</html>
When I click the button, I fill the JSON file (which works perfectly) and then I execute this to refresh the webview:
this.webView.getEngine().load(getClass().getResource("/data/index.html").toString());
As I said before, when I open the file on the browser I see the expected result, but I don't know what is the problem with the JavaFX. If there is a better way to do this please tell me.
EDIT:
I found a solution to the problem by sending directly the data (the GPS coordinates) from JavaFX to Javascript using the executeScript() method, so I don't need a json file as bridge between the two platforms. So this is an example of how the code looks like:
eng.executeScript("updateMarker(" + lat + ", " + lng + ")");//eng is a WebEngine instance
And here is the Javascript:
/*The initial latitude and longtitude*/
var currentLat = the latitude;
var currentLng = the longtitude;
function initMap() {
map = new google.maps.Map(document.getElementById('map'), {
center: {lat: currentLat, lng: currentLng},
zoom: 15,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var posi = new google.maps.LatLng(currentLat, currentLng);
marker = new google.maps.Marker({
position: posi,
map: map,
visible: false
});
}
/*The method that is I call from JavaFX*/
function updateMarker(_lat, _lng){
marker.setPosition({lat: _lat, lng: _lng});
map.setCenter(new google.maps.LatLng(_lat, _lng));
marker.setVisible(true);
}
Thank you for your comments and answers, and a special shootout to reddit.
cache: falseto the ajax call in case it is cached, and make sure you target the right file. Also some logs here and there would help identify the problem. – Laisethis.webView.getEngine().reload(). Or you can use theexecuteScriptmethod to reload marker data without refreshing the page. For reference see: docs.oracle.com/javase/8/javafx/api/javafx/scene/web/… – Laise