Created
October 19, 2011 00:33
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A Demo Drawing Google Map using watchPosition API for HTML5
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="http://code.jquery.com/jquery-1.4.2.min.js"></script> | |
| <script> | |
| jQuery(window).ready(function(){ | |
| gMapInit(); | |
| jQuery("#watchPositionBtn").click(initiate_watchlocation); | |
| jQuery("#stopWatchBtn").click(stop_watchlocation); | |
| }); | |
| function gMapInit(){ | |
| var google_tile = "http://maps.google.com/maps/api/staticmap?sensor=false¢er=-34.397,150.644&zoom=8&size=300x400" | |
| jQuery("#googleMap").html( | |
| jQuery(document.createElement("img")).attr("src", google_tile) | |
| ); | |
| } | |
| var watchProcess = null; | |
| function initiate_watchlocation() { | |
| if (watchProcess == null) { | |
| watchProcess = navigator.geolocation.watchPosition(handle_geolocation_query, handle_errors); | |
| } | |
| } | |
| function stop_watchlocation() { | |
| if (watchProcess != null) | |
| { | |
| navigator.geolocation.clearWatch(watchProcess); | |
| watchProcess = null; | |
| } | |
| } | |
| function handle_errors(error) | |
| { | |
| switch(error.code) | |
| { | |
| case error.PERMISSION_DENIED: alert("user did not share geolocation data"); | |
| break; | |
| case error.POSITION_UNAVAILABLE: alert("could not detect current position"); | |
| break; | |
| case error.TIMEOUT: alert("retrieving position timedout"); | |
| break; | |
| default: alert("unknown error"); | |
| break; | |
| } | |
| } | |
| function handle_geolocation_query(position) { | |
| var text = "position.coords.latitude: " + position.coords.latitude + "<br/>" + | |
| "position.coords.longitude: " + position.coords.longitude + "<br/>" + | |
| "position.coords.altitude: " + position.coords.altitude + "<br/>" + | |
| "position.coords.accuracy(meters): " + position.coords.accuracy + "<br/>" + | |
| "position.coords.altitudeAccuracy(meters): " + position.coords.altitudeAccuracy + "<br/>" + | |
| "position.coords.heading: " + position.coords.heading + "<br/>" + | |
| "position.coords.speed: " + position.coords.speed + "<br/>" + | |
| "position.timestamp: " + new Date(position.timestamp); | |
| jQuery("#APIReturnValues").html(text); | |
| jQuery("#APIReturnValues").css("border","3px solid green"); | |
| var image_url = "http://maps.google.com/maps/api/staticmap?sensor=false¢er=" + position.coords.latitude + ',' + position.coords.longitude + | |
| "&zoom=14&size=300x400&markers=color:blue|label:S|" + position.coords.latitude + ',' + position.coords.longitude; | |
| jQuery("#googleMap").html( | |
| jQuery(document.createElement("img")).attr("src", image_url) | |
| ); | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <div> | |
| <button id="watchPositionBtn" >Watch Current Position</button> | |
| <button id="stopWatchBtn" >Stop Watch Position</button> | |
| </div> | |
| <div id="APIReturnValues"></div> | |
| <div id="googleMap" style=" padding:1px; border:1px solid; height:400px; width:300px;"> | |
| </div> | |
| </body> | |
| </html> |
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