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POaddAnnotations issue (memory management maybe?)
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copied!<p>I'm having some problem with MKMapView / annotations / UINavigationController. Basically, i manage my views using a UINavigationController; one of my view contains an MKMapView and i add annotations on it (10 to 200) using the addAnnotations method.</p> <p>Everything is working fine except for one thing : if i navigate "too fast" on my UINavigationController, the iphone simulator crashes, receiving an "EXC BAD ACCESS" signal. For example, if i load my view containing the MKMapView and immediatly press the "Back" button from the UINavigationController navigation bar, i get the signal. I figured that the problem was with the addAnnotations method : when my MKMapView is loaded, i add annotations to it but it looks like everything is done asynchronously. If i wait like a second before pushing the "Back" button, i get no error but if i'm too fast, it crashes. I get no error at all if i remove the addAnnotations line. I guess it's because my view is released by the UINavigationController BEFORE the addAnnotations method got the job done.</p> <p>Any good solution to this? I don't want the user to wait (displaying a loading view for example); i guess the solution might be a better memory management but i don't see how i could do this.</p> <pre><code> if(DEBUG_MODE) { NSLog(@"Creating array of placemarks : begin"); } self.placemarkCache = [[NSMutableArray alloc] init]; // Loading placemarks for a placemark dictionary NSArray *sortedKeys = [[self.placemarkDictionary allKeys] sortedArrayUsingSelector:@selector(compare:)]; for (id key in sortedKeys) { MyPlacemark *currentPlacemark = [self.placemarkDictionary objectForKey:key]; [self.placemarkCache addObject:currentPlacemark]; [currentPlacemark release]; } if(DEBUG_MODE) { NSLog(@"Creating array of placemarks : done"); } if(DEBUG_MODE) { NSLog(@"Adding placemarks : begin"); } [self.mapView addAnnotations:self.placemarkCache]; if(DEBUG_MODE) { NSLog(@"Adding placemarks : done"); } </code></pre> <p>On this example, i get the "Adding placemarks : done" message before anything get displayed on the map.</p>

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