Om de locatie van de gebruiker te komen moet je eigenlijk de locatie manager "start" voordat je probeert om de locatie informatie te lezen. Ik stel voor dat je kijkt naar LocateMe monster van Apple.
LocateMe Sample Code
In een notendop, kan locatie-informatie krijgen van de gebruiker worden gedaan in twee stappen:
- (void)viewDidLoad {
[[self locationManager] startUpdatingLocation];
}
- (CLLocationManager *)locationManager {
if (locationManager != nil) {
return locationManager;
}
NSLog(@"%s, Creating new Location Manager instance.", __FUNCTION__);
locationManager = [[CLLocationManager alloc] init];
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
locationManager.distanceFilter = DISTANCE_FILTER_VALUE;
locationManager.delegate = self;
return locationManager;
}
... en dan,
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation {
NSLog(@"%s, location manager returned a new location.", __FUNCTION__);
// Check if location is valid (or good enough for us),
// and then process the location
if ([self locationIsValid:newLocation]) {
[self processLocation:newLocation];
// Very important! When your done with it, stop the location manager
[[self locationManager] sopUpdatingLocation];
// (Maybe even) clear it
locationManager.delegate = nil;
[locationManager release];
locationManager = nil;
}
}
Ik hoop dat dit helpt!