mapkit - iOS 8 MKAnnotationView rightCalloutAccessoryView misaligned

Question

I'm still pretty new to the iOS stuff in general and found a problem while testing our App for iOS 8 compatibility. In iOS 7 everything worked fine but on iOS 8 the rightCalloutAccessoryView is misaligned under certain circumstances.

First Screenshot: Correctly aligned

Second Screenshot: Wrong alignment

As you can see, the problem takes place when the InfoWindow has a long title. But this was not the case on iOS 7 and I couldn't find anything mentioning this has changed?

I tried to understand why and find a way to resolve this, but couldn't find anything yet. Is this solvable on our own or do we have to file an issue for Apple?

Any help/ideas would be highly appreciated as I'm somehow overchallenged with this problem.

Code which adds the MKAnnotationViews

- (MKAnnotationView *)viewForStation:(id<MKAnnotation>)annotation {
      static NSString *stationIdentifier = @"stao";
      MKAnnotationView *annotationView = [self.mapView dequeueReusableAnnotationViewWithIdentifier:stationIdentifier];
      if (annotationView == nil) {
          annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation           reuseIdentifier:stationIdentifier];
          annotationView.image = [UIImage bundleImageNamed:PIN_IMAGE];
          annotationView.canShowCallout = YES;
          annotationView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
      }
      return annotationView;
}

As you may be interested, I (just now) also added this question to the iOS 8 Beta section on apple.developer.com: https://devforums.apple.com/thread/242282?tstart=0

If I get an answer either here or on apple.developer.com I will reflect it so we can find it on both sites

question from:https://stackoverflow.com/questions/25484608/ios-8-mkannotationview-rightcalloutaccessoryview-misaligned

Answer 1

I solved this by setting the autoresizingmask to fix the vertical bug and frame.size.width for the horizontal bug

UIButton* infoButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[infoButton setFrame:CGRectMake(0, 0, CGRectGetWidth(infoButton.frame)+10, CGRectGetHeight(infoButton.frame))];
[infoButton setAutoresizingMask:UIViewAutoresizingFlexibleBottomMargin|UIViewAutoresizingFlexibleTopMargin];
[annotationView setRightCalloutAccessoryView:infoButton];