Question

I have a CLLocation that I set to the current location within the following function

- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
       fromLocation:(CLLocation *)oldLocation{

currentLocation = newLocation;
}

When I try to access the current position in a later method the app crashes.

NSLog(@"current latitude is %f", currentLocation.coordinate.latitude);
NSString *longitude = [NSString stringWithFormat:@"%g", currentLocation.coordinate.longitude];
NSString *latitude =  [NSString stringWithFormat:@"%g", currentLocation.coordinate.latitude];

The current position is set in the first method. I can print it out, what is weird is that I have this currentLocation defined as a pointer in the header.

The app crashes and there is no stacktrace. The debugger just sends me to the retValue of my app.

I tried retaining the pointer as well as alloc before setting it to the newLocation, but nothing seems to work.

What am I missing 😀

Answer 1

I’m not so sure about your code but I can suggest this

I tried retaining the pointer as well as alloc before setting it to the newLocation, but nothing seems to work.

You need to retain newLocation pointer not the currentLocation before setting.

currentLocation = [newLocation retain];

or

self.currentLocation = newLocation;

Because your assignment currentLocation = newLocation; does not retain the pointer and newLocation is autorelease.