Show my location using HTML5 Geolocation API and HERE Maps
(Wang shui -) |
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| − | [[Category: | + | [[Category:Nokia Maps]][[Category:Code Snippet]][[Category:JavaScript]][[Category:Location]][[Category:HTML5]] |
{{Abstract|This article explains how to capture a user location using HTML Geolocation API and display the user's location on nokia map }} | {{Abstract|This article explains how to capture a user location using HTML Geolocation API and display the user's location on nokia map }} | ||
| Line 10: | Line 10: | ||
The geolocation api comes along with HTML 5 and hence it is supported in almost all the latest browsers - Firefox, Chrome,Internet explorer, Safari,Opera etc. Inorder to retrieve geolocation, the user needs to explicitly give permission to share his/her location. | The geolocation api comes along with HTML 5 and hence it is supported in almost all the latest browsers - Firefox, Chrome,Internet explorer, Safari,Opera etc. Inorder to retrieve geolocation, the user needs to explicitly give permission to share his/her location. | ||
| − | + | The "{{Icode|if (navigator.geolocation)}}" condition provides whether the browser used by the user supports geolocation or not. If not the appropriate message needs to be shown | |
The following code captures the latitude and logitude of the user | The following code captures the latitude and logitude of the user | ||
| Line 21: | Line 21: | ||
== Nokia Maps == | == Nokia Maps == | ||
| − | + | The following code create the nokia maps | |
| − | + | ||
<code javascript> | <code javascript> | ||
| Line 48: | Line 47: | ||
</code> | </code> | ||
== Marker== | == Marker== | ||
| − | + | The following code adds a standard marker to the map. | |
| − | + | ||
<code javascript> | <code javascript> | ||
| Line 64: | Line 62: | ||
<html> | <html> | ||
<head> | <head> | ||
| − | <script src="http://api.maps.nokia.com/2. | + | <script type="text/javascript" charset="UTF-8" src="http://api.maps.nokia.com/2.2.1/jsl.js"></script> |
| − | <script> | + | <script type="text/javascript"> |
| + | //<![CDATA[ | ||
| + | ///////////////////////////////////////////////////////////////////////////////////// | ||
| + | // Don't forget to set your API credentials | ||
| + | // | ||
| + | // Replace with your appId and token which you can obtain when you | ||
| + | // register on http://api.developer.nokia.com/ | ||
| + | // | ||
| + | nokia.Settings.set( "appId", "YOUR APP ID GOES HERE"); | ||
| + | nokia.Settings.set( "authenticationToken", "YOUR AUTHENTICATION TOKEN GOES HERE"); | ||
| + | // | ||
| + | ////////////////////////////// | ||
| + | /*]]>*/ | ||
| + | </script> | ||
| + | <script type="text/javascript"> | ||
if (navigator.geolocation) { | if (navigator.geolocation) { | ||
var nokiaMap; | var nokiaMap; | ||
| Line 113: | Line 125: | ||
|sourcecode= <!-- Link to example source code e.g. [[Media:The Code Example ZIP.zip]] --> | |sourcecode= <!-- Link to example source code e.g. [[Media:The Code Example ZIP.zip]] --> | ||
|installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) --> | |installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) --> | ||
| − | |devices= | + | |devices= Internet Explorer, Firefox, Google Chrome, Safari |
|sdk= <!-- SDK(s) built and tested against (e.g. [http://linktosdkdownload/ Nokia Qt SDK 1.1]) --> | |sdk= <!-- SDK(s) built and tested against (e.g. [http://linktosdkdownload/ Nokia Qt SDK 1.1]) --> | ||
| − | |platform= | + | |platform= Web |
| + | |dependencies=Nokia Maps 2.2.1 | ||
|devicecompatability= <!-- Compatible devices e.g.: All* (must have internal GPS) --> | |devicecompatability= <!-- Compatible devices e.g.: All* (must have internal GPS) --> | ||
|signing=<!-- Signing requirements - empty or one of: Self-Signed, DevCert, Manufacturer --> | |signing=<!-- Signing requirements - empty or one of: Self-Signed, DevCert, Manufacturer --> | ||
|capabilities=<!-- Capabilities required by the article/code example (e.g. Location, NetworkServices. --> | |capabilities=<!-- Capabilities required by the article/code example (e.g. Location, NetworkServices. --> | ||
| − | |keywords= | + | |keywords= Geocoding, Positioning |
|id= <!-- Article Id (Knowledge base articles only) --> | |id= <!-- Article Id (Knowledge base articles only) --> | ||
|language=<!-- Language category code for non-English topics - e.g. Lang-Chinese --> | |language=<!-- Language category code for non-English topics - e.g. Lang-Chinese --> | ||
| Line 126: | Line 139: | ||
|update-by=<!-- After significant update: [[User:username]]--> | |update-by=<!-- After significant update: [[User:username]]--> | ||
|update-timestamp=<!-- After significant update: YYYYMMDD --> | |update-timestamp=<!-- After significant update: YYYYMMDD --> | ||
| − | |creationdate= | + | |creationdate= 20111227 |
| − | |author= | + | |author= [[user:wang_shui]] |
}} | }} | ||
| + | {{SeeAlso| | ||
| + | * [http://api.maps.nokia.com/en/positioning/intro.html Nokia Maps API] | ||
| + | * [http://api.maps.nokia.com/en/examples/maps/services/positioning.html Geolocation Example] | ||
| + | }} | ||
Revision as of 10:25, 11 July 2012
This article explains how to capture a user location using HTML Geolocation API and display the user's location on nokia map
Contents |
Introduction
HTML5 geolocation api provides support to capture ones location by capturing the latitude and longitude where the user is based. So by using a combination of geolocation api and nokia maps it is possible to display one's location on a web page. Please note that the accuracy of the location depends on the correctnes of the latitude and longitude that is captured.
Geolocation
The geolocation api comes along with HTML 5 and hence it is supported in almost all the latest browsers - Firefox, Chrome,Internet explorer, Safari,Opera etc. Inorder to retrieve geolocation, the user needs to explicitly give permission to share his/her location.
The "if (navigator.geolocation)" condition provides whether the browser used by the user supports geolocation or not. If not the appropriate message needs to be shown
The following code captures the latitude and logitude of the user
navigator.geolocation.getCurrentPosition(function(position) {
var posLatitude = position.coords.latitude;
var posLongitude = position.coords.longitude;
}
Nokia Maps
The following code create the nokia maps
// Create the nokiamap
nokiaMap = new nokia.maps.map.Display(
// Map canvas
document.getElementById("mapCanvas"),
{ components: [
//components enabling general mouse/touch map interaction (zoom, panning etc.).
new nokia.maps.map.component.Behavior(),
// show zoom bar
new nokia.maps.map.component.ZoomBar(),
Provides an expandable overview (minimap) window in the bottom right corner.
new nokia.maps.map.component.Overview(),
// map types- satellite, terrain etc
new nokia.maps.map.component.TypeSelector(),
Displays a scale bar at the bottom
new nokia.maps.map.component.ScaleBar() ],
// the default zoom level is set to 14
zoomLevel: 14,
// Set the map ceneter to the user's current position
center: [posLatitude, posLongitude]
});
});
Marker
The following code adds a standard marker to the map.
var marker = new nokia.maps.map.StandardMarker(
[posLatitude, posLongitude], {
text: "Me",
});
nokiaMap.objects.add(marker);
Complete Source Code
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript" charset="UTF-8" src="http://api.maps.nokia.com/2.2.1/jsl.js"></script>
<script type="text/javascript">
//<![CDATA[
/////////////////////////////////////////////////////////////////////////////////////
// Don't forget to set your API credentials
//
// Replace with your appId and token which you can obtain when you
// register on http://api.developer.nokia.com/
//
nokia.Settings.set( "appId", "YOUR APP ID GOES HERE");
nokia.Settings.set( "authenticationToken", "YOUR AUTHENTICATION TOKEN GOES HERE");
//
//////////////////////////////
/*]]>*/
</script>
<script type="text/javascript">
if (navigator.geolocation) {
var nokiaMap;
var marker;
navigator.geolocation.getCurrentPosition(function(position) {
var posLatitude = position.coords.latitude;
var posLongitude = position.coords.longitude;
nokiaMap = new nokia.maps.map.Display(
document.getElementById("mapCanvas"),
{ components: [
new nokia.maps.map.component.Behavior(),
new nokia.maps.map.component.Overview(),
new nokia.maps.map.component.ZoomBar(),
new nokia.maps.map.component.TypeSelector(),
new nokia.maps.map.component.ScaleBar() ],
zoomLevel: 11,
center: [posLatitude, posLongitude]
});
var marker = new nokia.maps.map.StandardMarker(
[posLatitude, posLongitude], {
text: "Me",
});
nokiaMap.objects.add(marker);
});
} else {
alert("Geolocation API is not supported in your browser.Please upgrade your browser");
}
</script>
<style type="text/css">
#mapCanvas {
height: 600px;
width: 950px;
border:10px solid #000000;
}
</style>
</head>
<body>
<div id="mapCanvas"></div>
</body>
</html>
