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POHow to keep GPS app running in background without pauses
 

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  1. POHow to keep GPS app running in background without pauses
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    <p>I have a problem keeping the GPS running in background. </p> <p>I succeded to keep the GPS running when the app is in background, but it stops sometimes. I noticed that it stops when i enter in a building and i stay there for 2-3 hours. "Stops" means that i don't receive any GPS point even though the location service icon is still on. Then when i get out i don't receive any points until I bring my application to foreground.</p> <p>I set the pausesLocationUpdatesAutomatically property to NO.</p> <p>So, everything works fine until i get into a location with weak gps signal. When i get out of that area i don't receive points anymore, even though I should because the gps signal is now good.</p> <p>And here is my code when the applications enters in background:</p> <pre><code>- (void)applicationWillResignActive:(UIApplication *)application { NSLog(@"[AppDelegate]: Application entering in background!"); if(doesUserWantGPSTracking) { [self stopGPS]; UIApplication *app = [UIApplication sharedApplication]; bgTask = [app beginBackgroundTaskWithExpirationHandler: ^{ dispatch_async(dispatch_get_main_queue(), ^{ if( bgTask != UIBackgroundTaskInvalid ) { [app endBackgroundTask:bgTask]; bgTask = UIBackgroundTaskInvalid; } }); }]; dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ [self startGPS]; dispatch_async(dispatch_get_main_queue(), ^{ if( bgTask != UIBackgroundTaskInvalid ) { [app endBackgroundTask:bgTask]; bgTask = UIBackgroundTaskInvalid; } }); }); } } </code></pre>
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