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POMKAnnotationView showing callout with no text
 

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    <p><strong>Update</strong>:Michael got it right. Here is my solution:</p> <pre><code>- (void) connectNextCarOnMainThread:(id)annotation{ [self performSelectorOnMainThread:@selector(connectNextCar:) withObject:annotation waitUntilDone:YES]; } - (void) connectNextCar:(id)annotation{ Pin *pin = (Pin *)annotation; MKMapRect zoomRect = MKMapRectNull; MKMapPoint annotationPoint = MKMapPointForCoordinate(pin.coordinate); MKMapRect pointRect = MKMapRectMake(annotationPoint.x, annotationPoint.y, 3, 3); if (MKMapRectIsNull(zoomRect)) { zoomRect = pointRect; } else { zoomRect = MKMapRectUnion(zoomRect, pointRect); } [mapView setVisibleMapRect:zoomRect animated:YES]; [mapView selectAnnotation:pin animated:YES]; NSInteger currentIndex=[self.annotations indexOfObject:annotation]; if(currentIndex &lt; [self.annotations count]){ [self performSelector:@selector(connectNextCarOnMainThread:) withObject:[self.annotations objectAtIndex:currentIndex+1] afterDelay:5]; } } </code></pre> <p><br /></p> <hr> <p>I want to achieve a simple feature: center and select one of my annotations every X seconds. But I'm getting some strange behavior in my annotation callouts.</p> <p>Here is my code:</p> <pre><code>- (void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated{ if(self.movedToFitPins){ for(id &lt;MKAnnotation&gt; pin in self.annotations) [self.mapView addAnnotation:pin]; self.movedToFitPins = NO; [self performSelectorInBackground:@selector(fakeCarConnections) withObject:nil]; } } - (void) fakeCarConnections { for (Pin *annotation in self.annotations) { [NSThread sleepForTimeInterval : 10.0]; MKMapRect zoomRect = MKMapRectNull; MKMapPoint annotationPoint = MKMapPointForCoordinate(annotation.coordinate); MKMapRect pointRect = MKMapRectMake(annotationPoint.x, annotationPoint.y, 3, 3); if (MKMapRectIsNull(zoomRect)) { zoomRect = pointRect; } else { zoomRect = MKMapRectUnion(zoomRect, pointRect); } [mapView setVisibleMapRect:zoomRect animated:YES]; [mapView selectAnnotation:annotation animated:YES]; } } </code></pre> <p>So, what is happening is that I do focus on the Annotation, the callout bubble does open but with no text inside. If i click in the annotation, the callout opens up correctly with the text.<br /> Here is the catch: if I comment the sleepForTimeInterval line, the code works fine, but I only see the last annotation since it passes trough all the others.</p>
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