handling location event with didFinishLaunchingWithOptions in background mode or after app was terminated - background

Question

I call startMonitoringSignificantLocationChanges in location manager init.
I expect that if there is a location event didFinishLaunchingWithOptions will be launched and execute the following code. (including background mode and if app was terminated)
The app freezes (black screen when i try to launch it after a few hours in the background in different location)
Probably i'm doing something wrong when i get a location event. I would appreciate if someone has an idea what's the problem.
By the way, there is no way to simulate this kind of location event but physically move to a different location with different cell tower. is there? ... :(
LocationController.m :
- (id)init
{
self = [super init];
if (self != nil) {
self.locationManager = [[[CLLocationManager alloc] init] autorelease];
self.locationManager.delegate = self;
self.locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters;
[self.locationManager startUpdatingLocation];
[self.locationManager startMonitoringSignificantLocationChanges];
[NSTimer scheduledTimerWithTimeInterval:10 target:self selector:#selector(stop) userInfo:nil repeats:NO];
}
return self;
}
appdelegate.m :
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
id locationValue = [launchOptions objectForKey:UIApplicationLaunchOptionsLocationKey];
if (locationValue)
{
[[LocationController sharedInstance] startMonitoringSignificantLocationChanges];
UIApplication *app = [UIApplication sharedApplication];
bgTask = [app beginBackgroundTaskWithExpirationHandler:^{
[app endBackgroundTask:bgTask];
bgTask = UIBackgroundTaskInvalid;
}];
[self updateLocationService];
return YES;
}
}
- (void) updateLocationService {
[[LocationController sharedInstance] start];
[NSTimer scheduledTimerWithTimeInterval:2 target:self selector:#selector(stop) userInfo:nil repeats:NO];
}
- (void) stop {
[[LocationController sharedInstance] stop];
}
Thank you!

Answer 1

Your didFinishLaunchingWithOptions: method does not return anything if there is no UIApplicationLaunchOptionsLocationKey set.
Just move the return statement outside your if clause:
if (locationValue)
{
...
}
return YES;