Titanium.Geolocation.addEventListener gets fired 50-75/sec on\napp startup with no location changes. My understanding was that\nthis was only supposed to fire when the location changed. On the\niphone simulator, I'm seeing this fire every 3 seconds. On the\ndevices its many, many times a second. It slows down the app\nstart-up and causes time-outs.
\n\nIn the console log, you can see the first location request and\nthen the following 187 are lines are the location listenter.
Here is the code from app.js that requests location. It is very\nclose to the KitchenSink code.
\n\ntry {\n Ti.API.debug('Titanium.Geolocation.locationServicesEnabled: ' + Titanium.Geolocation.locationServicesEnabled);\n if (Titanium.Geolocation.locationServicesEnabled == false) {\n Titanium.UI.createAlertDialog({\n title: 'Warning',\n message: 'Your device has geolocation turned off. Please turn it on now.'\n }).show();\n }\n else {\n Ti.API.debug('Location services are available');\n //\n // SET ACCURACY\n //\n Titanium.Geolocation.accuracy = Titanium.Geolocation.ACCURACY_BEST;\n //\n // SET DISTANCE FILTER. THIS DICTATES HOW OFTEN AN EVENT FIRES BASED ON THE DISTANCE THE DEVICE MOVES\n // THIS VALUE IS IN METERS\n //\n Titanium.Geolocation.distanceFilter = 10;\n //\n // GET CURRENT POSITION - THIS FIRES ONCE\n //\n var myLongitude;\n var myLatitude;\n var myAltitude;\n var myHeading;\n var myAccuracy;\n var mySpeed;\n var myGeoTimestamp;\n var myAltitudeAccuracy;\n Titanium.Geolocation.getCurrentPosition(function(e){ \n if (e.error) {\n Ti.API.error('Geolocation Error');\n Ti.API.error('error:' + JSON.stringify(e.error));\n return;\n };\n // get values from geolocation call\n myLatitude = e.coords.latitude;\n Titanium.App.Properties.setDouble('myLatitude', myLatitude);\n myLongitude = e.coords.longitude;\n Titanium.App.Properties.setDouble('myLongitude', myLongitude);\n myAltitude = e.coords.altitude;\n myHeading = e.coords.heading;\n myAccuracy = e.coords.accuracy;\n mySpeed = e.coords.speed;\n myGeoTimestamp = e.coords.timestamp;\n myAltitudeAccuracy = e.coords.altitudeAccuracy;\n showVariables('Got Geolocation info');\n });\n //\n // EVENT LISTENER FOR GEO EVENTS - THIS WILL FIRE REPEATEDLY (BASED ON DISTANCE FILTER)\n //\n Titanium.Geolocation.addEventListener('location', function(e){\n if (e.error) {\n Ti.API.error('Geolocation Error');\n Ti.API.error('error:' + JSON.stringify(e.error));\n return;\n };\n \n // get values from geolocation call\n myLatitude = e.coords.latitude;\n Titanium.App.Properties.setDouble('myLatitude', myLatitude);\n myLongitude = e.coords.longitude;\n Titanium.App.Properties.setDouble('myLongitude', myLongitude);\n myAltitude = e.coords.altitude;\n myHeading = e.coords.heading;\n myAccuracy = e.coords.accuracy;\n mySpeed = e.coords.speed;\n myGeoTimestamp = e.coords.timestamp;\n myAltitudeAccuracy = e.coords.altitudeAccuracy;\n \n geoCount = geoCount + 1;\n Ti.API.info('*********** Geo: ' + geoCount + ' ' + myLatitude + '/' + myLongitude + ' ');\n Titanium.Geolocation.distanceFilter = 100; // changed after first location event \n });\n };\n}\ncatch(err) {\n Titanium.UI.createAlertDialog({\n title: 'Geolocation Error',\n message: err\n }).show(); \n};\nI'm seeing the same behavior. It doesn't make any sense.
I'm see this problem as well.
\nWhen I test the code in the KitchenSink, I can't get the\nposition to update based on a position change (according to the\ndistance filter). Only the initial position is acquired, and no\nsubsequent positions are acquired. The distance filter seems\ninoperable.
\nThe only way I've managed to get working GPS functionality is to\ncall getCurrentPosition on the location event like\nthis:
\nTi.Geolocation.addEventListener('location', getPosition);\n\nfunction getPosition(e) {\n \n //Watch for errors\n if(e.error){ return; }\n\n Ti.Geolocation.accuracy = Ti.Geolocation.ACCURACY_BEST;\n Ti.Geolocation.distanceFilter = 100; \n \n Ti.Geolocation.getCurrentPosition(function(e){\n if(e.error){ return; }\n \n //Get the GPS goods\n var longitude = e.coords.longitude;\n var latitude = e.coords.latitude;\n var altitude = e.coords.altitude;\n var accuracy = e.coords.accuracy;\n var timestamp = e.coords.timestamp;\n });\n}\n\nSo I'm basically getting the initial position over and over\nagain using the location event. It feels wrong, but\nit's the only thing I've been able to figure out.
Having the same problem with the kitchen sink code, it only\nseems to update the first time then hangs. Although, after opening\nthe google maps app and allowing the GPS to sync and pulse, closing\ngoogle maps, then opening the kitchen sink app again it seems to\nwork properly and location updates flow in and regular intervals.\nAny ideas!?
We are seeing the same problem that norm is seeing.
\nLater location updates seem to fire up even when the location\ndoesnt change. Kitchensink example doesnt work as coded. Let us\nknow if you need more info.
Looks like this is a pressing issue.