74772 0 true 2009-12-16T01:23:19-08:00 66846 16 navigatorgeolocation-does-not-make-use-of-gps-data 140893 20116 resolved geolocation iphone 2010-01-28T01:19:54-08:00 74772 Jesse Hugo Jesse http://phonegap.lighthouseapp.com/projects/20116/tickets/16 On the iPhone, navigator.geolocation references the Safari Geolocation API, not the Geolocation() phonegap object. As a result, only Wifi & cell tower triangulation data are being used to pinpoint the location (and the accuray these signals falls short of the accuracy from GPS - especially outside or urban areas) Steps to reproduce (...short of walking on the countryside to compare accuracy with Phonagap app Vs maps): 1. In the sample application, add the following line to index.html's getLocation() function: <code>debug.log(navigator.geolocation.watchPosition.toString());</code> 2. Start the sample application, click the 'Get Location' button and check that you see this in the logs instead of the expected watchPosition() function defined in geolocation.js <code> function watchPosition() { [native code] } </code> Re: http://groups.google.com/group/phonegap/browse_thread/thread/32da55d81fc4a8ff# On the iPhone, navigator.geolocation references the Safari Geolocation API, not the Geolocation() phonegap object. As a result, only Wifi & cell tower triangulation data are being used to pinpoint the location (and the accuray these signals falls short of the accuracy from GPS - especially outside or urban areas) Steps to reproduce (...short of walking on the countryside to compare accuracy with Phonagap app Vs maps): 1. In the sample application, add the following line to index.html's getLocation() function: <code>debug.log(navigator.geolocation.watchPosition.toString());</code> 2. Start the sample application, click the 'Get Location' button and check that you see this in the logs instead of the expected watchPosition() function defined in geolocation.js <code> function watchPosition() { [native code] } </code> Re: http://groups.google.com/group/phonegap/browse_thread/thread/32da55d81fc4a8ff# <div><p>On the iPhone, navigator.geolocation references the Safari Geolocation API, not the Geolocation() phonegap object. As a result, only Wifi &amp; cell tower triangulation data are being used to pinpoint the location (and the accuray these signals falls short of the accuracy from GPS - especially outside or urban areas)</p> <p>Steps to reproduce (...short of walking on the countryside to compare accuracy with Phonagap app Vs maps):<br> 1. In the sample application, add the following line to index.html's getLocation() function:<br> <code>debug.log(navigator.geolocation.watchPosition.toString());</code><br> 2. Start the sample application, click the 'Get Location' button and check that you see this in the logs instead of the expected watchPosition() function defined in geolocation.js<br> <code><br> function watchPosition() {<br></code></p> {mkd-extraction-a764e38f28403e5ce435038db0d592a7} <p>}</p> <p>Re: <a href= "http://groups.google.com/group/phonegap/browse_thread/thread/32da55d81fc4a8ff"> http://groups.google.com/group/phonegap/browse_thread/thread/32da55...</a>#</p></div> 0 On the iPhone, navigator.geolocation references the Safari Geolocation API, not the Geolocation() phonegap object. As a result, only Wifi & cell tower triangulation data are being used to pinpoint the location (and the accuray these signals falls short of the accuracy from GPS - especially outside or urban areas) Steps to reproduce (...short of walking on the countryside to compare accuracy with Phonagap app Vs maps): 1. In the sample application, add the following line to index.html's getLocation() function: <code>debug.log(navigator.geolocation.watchPosition.toString());</code> 2. Start the sample application, click the 'Get Location' button and check that you see this in the logs instead of the expected watchPosition() function defined in geolocation.js <code> function watchPosition() { [native code] } </code> Re: http://groups.google.com/group/phonegap/browse_thread/thread/32da55d81fc4a8ff# <div><p>On the iPhone, navigator.geolocation references the Safari Geolocation API, not the Geolocation() phonegap object. As a result, only Wifi &amp; cell tower triangulation data are being used to pinpoint the location (and the accuray these signals falls short of the accuracy from GPS - especially outside or urban areas)</p> <p>Steps to reproduce (...short of walking on the countryside to compare accuracy with Phonagap app Vs maps):<br> 1. In the sample application, add the following line to index.html's getLocation() function:<br> <code>debug.log(navigator.geolocation.watchPosition.toString());</code><br> 2. Start the sample application, click the 'Get Location' button and check that you see this in the logs instead of the expected watchPosition() function defined in geolocation.js<br> <code><br> function watchPosition() {<br></code></p> {mkd-extraction-a764e38f28403e5ce435038db0d592a7} <p>}</p> <p>Re: <a href= "http://groups.google.com/group/phonegap/browse_thread/thread/32da55d81fc4a8ff"> http://groups.google.com/group/phonegap/browse_thread/thread/32da55...</a>#</p></div> false 2009-09-10T14:07:29-07:00 66846 --- {} 16 navigatorgeolocation-does-not-make-use-of-gps-data 0 20116 new geolocation iphone 2009-09-10T14:07:33-07:00 66846 Hugo Hugo http://phonegap.lighthouseapp.com/projects/20116/tickets/16 0 Unfortunately based on my tests, we cannot bind to "navigator.geolocation" to override UIWebView's default implementation in 3.0. <br /> If we want to enable PhoneGap geoloc, we will have to be bind to another property. The impact: addition of another API call, and Objective-C changes. <br /> <br /> Will need to discuss with the team about the impact. <div><p>Unfortunately based on my tests, we cannot bind to "navigator.geolocation" to override UIWebView's default implementation in 3.0.<br> <br> <br> If we want to enable PhoneGap geoloc, we will have to be bind to another property. The impact: addition of another API call, and Objective-C changes.<br> <br> <br> <br> Will need to discuss with the team about the impact.</p></div> false 2009-09-11T16:53:23-07:00 66846 --- {} 16 navigatorgeolocation-does-not-make-use-of-gps-data 0 20116 new geolocation iphone 2009-09-11T16:53:28-07:00 64602 Shazron Abdullah Hugo http://phonegap.lighthouseapp.com/projects/20116/tickets/16 74772 0 Okay, until we decide how to refactor this with the least impact, I will post the workaround. The js Geolocation object defined in phonegap.js functions correctly and was in use until the 3.0 update that added the same functionality to the navigator object, and overwrote the phonegap functionality. You will not need to modify phonegap.js. In your html/js code, create your own Geolocation object: ( define it in a global scope, so it can be accessed from Obj-C code. @@@ javascript // in js var myLocation = new Geolocation(); myLocation.getCurrentPosition(onLocSuccess); myLocation.start(); @@@ @@@ javascript // in Obj-C - Location.m ( in the commands folder ) // Replace the 2 calls to callback to javascript to use your js object : NSString * jsCallBack = [NSString stringWithFormat:@"myLocation.setLocation({ timestamp: %d, %@ });", epoch, coords]; // and jsCallBack = [NSString stringWithFormat:@"myLocation.setError(\"%s\");", [error localizedDescription] ]; @@@ Also: Note the case of Geolocation, I kept thinking it should be GeoLocation and hence stared blankly at my code for awhile when it didn't work. <div><p>Okay, until we decide how to refactor this with the least impact, I will post the workaround.</p> <p>The js Geolocation object defined in phonegap.js functions correctly and was in use until the 3.0 update that added the same functionality to the navigator object, and overwrote the phonegap functionality. You will not need to modify phonegap.js.</p> <p>In your html/js code, create your own Geolocation object: ( define it in a global scope, so it can be accessed from Obj-C code.</p> <pre> <code class="javascript"> // in js var myLocation = new Geolocation(); myLocation.getCurrentPosition(onLocSuccess); myLocation.start();</code> </pre> <pre> <code class="javascript"> // in Obj-C - Location.m ( in the commands folder ) // Replace the 2 calls to callback to javascript to use your js object : NSString * jsCallBack = [NSString stringWithFormat:@"myLocation.setLocation({ timestamp: %d, %@ });", epoch, coords]; // and jsCallBack = [NSString stringWithFormat:@"myLocation.setError(\"%s\");", [error localizedDescription] ];</code> </pre> <p>Also: Note the case of Geolocation, I kept thinking it should be GeoLocation and hence stared blankly at my code for awhile when it didn't work.</p></div> false 2009-12-16T01:23:19-08:00 66846 --- :assigned_user: 16 navigatorgeolocation-does-not-make-use-of-gps-data 0 20116 new geolocation iphone 2009-12-16T01:28:02-08:00 74772 Jesse Hugo Jesse http://phonegap.lighthouseapp.com/projects/20116/tickets/16 74772 0 Ok, the PhoneGap team discussed it and found out there is workaround for this. Although navigator.geolocation CANNOT be overridden, the properties of the navigator.geolocation object CAN be overridden. So the fix is to override all the navigator.geolocation API functions with our old geolocation functions. eg var myGeo = new Geolocation(); navigator.geolocation.getCurrentPosition = function() { myGeo.getCurrentPosition.apply(myGeo,arguments); } navigator.geolocation.setLocation = function() { myGeo.setLocation.apply(myGeo,arguments); } <div><p>Ok, the PhoneGap team discussed it and found out there is workaround for this. Although navigator.geolocation CANNOT be overridden, the properties of the navigator.geolocation object CAN be overridden.</p> <p>So the fix is to override all the navigator.geolocation API functions with our old geolocation functions.</p> <p>eg<br></p> <pre> <code> var myGeo = new Geolocation(); navigator.geolocation.getCurrentPosition = function() { myGeo.getCurrentPosition.apply(myGeo,arguments); } navigator.geolocation.setLocation = function() { myGeo.setLocation.apply(myGeo,arguments); }</code> </pre></div> false 2009-12-24T15:30:20-08:00 66846 --- {} 16 navigatorgeolocation-does-not-make-use-of-gps-data 0 20116 new geolocation iphone 2009-12-24T15:30:21-08:00 64602 Shazron Abdullah Hugo Jesse http://phonegap.lighthouseapp.com/projects/20116/tickets/16 74772 0 true 2010-01-28T01:19:53-08:00 66846 --- :state: new 16 navigatorgeolocation-does-not-make-use-of-gps-data 0 20116 resolved geolocation iphone 2010-01-28T01:19:54-08:00 74772 Jesse Hugo Jesse http://phonegap.lighthouseapp.com/projects/20116/tickets/16