Geolocation API on the iPhone

Question!

Does anyone know whether the iPhone supports or will soon support the W3C Geolocation specification?

I'm looking to build an app for mobile users, but rather than spend the time developing apps for every different platform (iPhone, Android, etc...), I'd much prefer to create a web app that makes use of the W3C Standard.

By : Codebeef


Answers

This small javascript library is cross-platform and supports all modern smartphones out of the box:

http://code.google.com/p/geo-location-javascript/

Here is how you use it:

//determine if the handset has client side geo location capabilities
if(geo_position_js.init()){
   geo_position_js.getCurrentPosition(success_callback,error_callback);
}else{
   alert("Functionality not available");
}


This code worked for me -- on the iPhone web browser Safari and as an added bonus it even worked with FireFox 3.5 on my laptop! The Geolocation API Specification is part of the W3 Consortium’s standards But be warned: it hasn’t been finalized as yet.

alt text alt text

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Geolocation API Demo</title>
<meta content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;" name="viewport"/>
<script>
function successHandler(location) {
    var message = document.getElementById("message"), html = [];
    html.push("<img width='256' height='256' src='http://maps.google.com/maps/api/staticmap?center=", location.coords.latitude, ",", location.coords.longitude, "&markers=size:small|color:blue|", location.coords.latitude, ",", location.coords.longitude, "&zoom=14&size=256x256&sensor=false' />");
    html.push("<p>Longitude: ", location.coords.longitude, "</p>");
    html.push("<p>Latitude: ", location.coords.latitude, "</p>");
    html.push("<p>Accuracy: ", location.coords.accuracy, " meters</p>");
    message.innerHTML = html.join("");
}
function errorHandler(error) {
    alert('Attempt to get location failed: ' + error.message);
}
navigator.geolocation.getCurrentPosition(successHandler, errorHandler);
</script>
</head>
<body>
<div id="message">Location unknown</div>
</body>
</html>
By : daniellmb


I updated MyWhirledView's code. Works great on my iOS 4.3 device. Google no longer requires an API key to access their static map library.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>iPhone 4.0 geolocation demo</title>
<meta content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;" name="viewport"/>
<script>
function handler(location) {
var message = document.getElementById("message");
message.innerHTML ="<img src='http://maps.google.com/maps/api/staticmap?center=" + location.coords.latitude + "," + location.coords.longitude + "&zoom=14&size=256x256&maptype=roadmap&sensor=false&markers=color:blue%7Clabel:ABC%7C" + location.coords.latitude + "," + location.coords.longitude + "' />";



message.innerHTML+="<p>Longitude: " + location.coords.longitude + "</p>";
message.innerHTML+="<p>Accuracy: " + location.coords.accuracy + "</p>";
message.innerHTML+="<p>Latitude: " + location.coords.latitude + "</p>";



}
navigator.geolocation.getCurrentPosition(handler);
</script>
</head>
<body>
<div id="message">Location unknown</div>
</body>
</html>
By : Niraj D


This video can help you solving your question :)
By: admin