[ How to make a Google Map (Using Javascript API v3) including geolocation and a KML layer? I can only get one or the other ]
The following code is what I have been trying, but I can only get one or the other I am unable to get geolocation to work with a kml layer as well. I change the order of the map and kml layer and it only shows whichever one is last in the code. Here is my example:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Google Maps JavaScript API v3 Example: Map Geolocation</title>
<link href="http://code.google.com/apis/maps/documentation/javascript/examples/default.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script>
<script type="text/javascript" src="http://code.google.com/apis/gears/gears_init.js"></script>
<script type="text/javascript">
var initialLocation;
var siberia = new google.maps.LatLng(60, 105);
var newyork = new google.maps.LatLng(40.69847032728747, -73.9514422416687);
var browserSupportFlag = new Boolean();
var map;
var infowindow = new google.maps.InfoWindow();
function initialize() {
var myOptions = {
zoom: 10,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var georssLayer = new google.maps.KmlLayer('http://mymedicinalgarden.org/kml/everything.kml');
georssLayer.setMap(map);
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
// Try W3C Geolocation method (Preferred)
if(navigator.geolocation) {
browserSupportFlag = true;
navigator.geolocation.getCurrentPosition(function(position) {
initialLocation = new google.maps.LatLng(position.coords.latitude,position.coords.longitude);
contentString = "";
map.setCenter(initialLocation);
infowindow.setContent(contentString);
infowindow.setPosition(initialLocation);
infowindow.open(map);
}, function() {
handleNoGeolocation(browserSupportFlag);
});
} else if (google.gears) {
// Try Google Gears Geolocation
browserSupportFlag = true;
var geo = google.gears.factory.create('beta.geolocation');
geo.getCurrentPosition(function(position) {
initialLocation = new google.maps.LatLng(position.latitude,position.longitude);
contentString = "";
map.setCenter(initialLocation);
infowindow.setContent(contentString);
infowindow.setPosition(initialLocation);
infowindow.open(map);
}, function() {
handleNoGeolocation(browserSupportFlag);
});
} else {
// Browser doesn't support Geolocation
browserSupportFlag = false;
handleNoGeolocation(browserSupportFlag);
}
}
function handleNoGeolocation(errorFlag) {
if (errorFlag == true) {
initialLocation = newyork;
contentString = "Error: The Geolocation service failed.";
} else {
initialLocation = siberia;
contentString = "Error: Your browser doesn't support geolocation. Are you in Siberia?";
}
map.setCenter(initialLocation);
infowindow.setContent(contentString);
infowindow.setPosition(initialLocation);
infowindow.open(map);
}
</script>
</head>
<body onload="initialize()">
<div id="map_canvas"></div>
</body>
</html>
The displayed map will only show whichever of these comes last:
var georssLayer = new google.maps.KmlLayer('http://mymedicinalgarden.org/kml/everything.kml');
georssLayer.setMap(map);
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
I really need the KML layer in addition to using geolocation. I know there is a way with the correct syntax, but after hours of research and trial and error the solution escapes me. Please help
Answer 1
You should first set the map.
and then load kml on the map
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
var georssLayer = new google.maps.KmlLayer('http://example.org/kml/everything.kml');
georssLayer.setMap(map);
