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POissues with geting location coordinate time to time
 

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  1. POissues with geting location coordinate time to time
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    <p>time to time there is an issue with geting the location coordinate on my app.</p> <p>I have been testing my app for location coordinate from the simulator and the iphone sitting at my home (it is not just my home, i tested it in different location (outdoor) as well with a very good network connectivity), and i see this wired behavior, i have the right co ordinate at the moment and then i send the app to the background and bring it back i get the right location co ordinate, and if i do it 8-10 times (i.e sending it to background and bringing it to foreground) once in a while after the app comes from the background i cannot get location co ordinate, the only way to get the location co ordinate at this moment is to kill the app and then start fresh. So i am sure some thing is going wrong but I am not sure what is it.</p> <p>This is what I am doing </p> <pre><code>- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { //if the time interval returned from core location is more than 30 seconds we ignore it because it might be from an old session if ( abs([newLocation.timestamp timeIntervalSinceDate: [NSDate date]]) &lt; 30) { if(newLocation.coordinate.latitude != previousLocation.coordinate.latitude &amp;&amp; newLocation.coordinate.longitude != previousLocation.coordinate.longitude){ if(newLocation.horizontalAccuracy &lt;= 100){ [self.locationManager stopUpdatingLocation]; [self.locationManager startMonitoringSignificantLocationChanges]; } else{ [self.locationManager startUpdatingLocation]; } </code></pre> <p>So basically i take the newLocation only if it is not older then 30 sec, and it is not same as previous location that i have stored locally and the horizontal accuracy is less than 100 meter. When i run it in debugger what i am observing is i get to the first if condition 3-4 times and if it fails it doesn't come after that, which means didUpdateToLocation doesn't get called at all. </p> <p>Once the co ordinate meet all my criteria I do stopupdatinglocation and do startMonitoringSignificantLocationChanges.</p> <p>The reason i am doing startUpdatingLocation in my else block is.</p> <p>For example if didUpdateToLocation got called due to the startMonitoringSignificantLocationChanges, i want to get the accurate location after that so i am doing startUpdatingLocation every time i don't get the right location that i am looking for as i believe doing multiple startUpdatingLocation doesn't harm anything. </p> <p>Let me know if there is something wrong in my thought process or in the code logic.</p>
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