MDD CLLocationManager Code Snippets

gistfile1.m

CLLocationManagerDelegate

@property (strong, nonatomic) CLLocationManager *locationManager;
@property (strong, nonatomic) FBCacheDescriptor *placeCacheDescriptor;

    // Get the CLLocationManager going.
    self.locationManager = [[CLLocationManager alloc] init];
    self.locationManager.delegate = self;
    self.locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters;
    // We don't want to be notified of small changes in location, preferring to use our
    // last cached results, if any.
    self.locationManager.distanceFilter = 50;
    [self.locationManager startUpdatingLocation];

- (IBAction)clickPlace:(id)sender {
    FBPlacePickerViewController* vc = [[FBPlacePickerViewController alloc]init];
    [vc configureUsingCachedDescriptor:self.placeCacheDescriptor];
    [vc loadData];
    [vc presentModallyFromViewController:self animated:YES handler:^(FBViewController *sender, BOOL donePressed) {
        if(donePressed) {
            NSLog(@"Success");
        }
    }];
}

-(void)locationManager:manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation {
    if (!oldLocation ||
        (oldLocation.coordinate.latitude != newLocation.coordinate.latitude &&
         oldLocation.coordinate.longitude != newLocation.coordinate.longitude &&
         newLocation.horizontalAccuracy <= 100.0)) {
        // Fetch data at this new location, and remember the cache descriptor.
        self.placeCacheDescriptor =
        [FBPlacePickerViewController cacheDescriptorWithLocationCoordinate:newLocation.coordinate
                                                            radiusInMeters:1000
                                                                searchText:nil
                                                              resultsLimit:50
                                                          fieldsForRequest:nil];
        
        [self.placeCacheDescriptor prefetchAndCacheForSession:FBSession.activeSession];
    }
}

-(void)locationManager:manager didFailWithError:(NSError *)error {
    NSLog(@"Error! %@", error);
}