StackOverflow2013

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POMapKit update annotation image
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copied!<p>I'm having a problem finding out the way to update a custom <code>MKAnnotationView</code> image after a asynchronous request completes with information about the status of the annotation. So far, I have this:</p> <pre class="lang-c prettyprint-override"><code>- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation { static NSString *identifier = @"EstacionEB"; if ([annotation isKindOfClass:[EstacionEB class]]) { EstacionEB *location = (EstacionEB *) annotation; CustomPin *annotationView = (CustomPin *) [_mapita dequeueReusableAnnotationViewWithIdentifier:identifier]; if (annotationView == nil) { annotationView = [[CustomPin alloc] initWithAnnotation:annotation reuseIdentifier:identifier]; } else { annotationView.annotation = annotation; } UIImage * image = [UIImage imageNamed:[NSString stringWithFormat:@"%@.png", [location elStatus]]]; annotationView.enabled = YES; annotationView.canShowCallout = YES; annotationView.image = image; NSDictionary *temp = [[NSDictionary alloc] initWithObjects:[NSArray arrayWithObjects:annotationView, location, nil] forKeys:[NSArray arrayWithObjects:@"view", @"annotation", nil] ]; //This array is synthesized and inited in my controller's viewDidLoad [self.markers setObject:temp forKey:location.eid]; return annotationView; } return nil; } </code></pre> <p>A little after, I do a request and with the results, an NSDictionary, I'm trying to do the following, which returns null to both elements:</p> <pre class="lang-c prettyprint-override"><code>- (void)updateStation:(NSString *)eid withDetails:(NSDictionary *)details { NSInteger free = [details objectForKey:@"free"]; NSInteger parkings = [details objectForKey:@"parkings"]; NSDictionary *storedStations = [self.markers objectForKey:eid]; CustomPin *pin = [storedStations objectForKey:@"view"]; //nil EstacionEB *station = [referencia objectForKey:@"annotation"]; //nil as well [station setSubtitle:free]; NSString *status; if( free==0 ){ status = @"empty"; } else if( (free.intValue>0) && (parkings.intValue<=3) ){ status = @"warning"; } else { status = @"available"; } UIImage * image = [UIImage imageNamed:[NSString imageWithFormat:@"%@.png", status]]; pin.image = image; } </code></pre> <p>This brings up no errors (assuming I pasted and traduced everything correctly), but the NSMutableDictionary that should contain both my custom MKAnnotationView and the MKAnnotation, but even when I log them all before the request completes and it appears correctly, when the request completes its as if both the MKAnnotationView and MKAnnotation are just not what I expected, and thus, I can't modify the annotations to change the image or update the annotation view.</p> <p>Any ideas would be appreciated!</p>

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