MKAnnotationView Animation example

gistfile1.m

- (void)mapView:(MKMapView *)mapView didAddAnnotationViews:(NSArray *)views { 
    
  if ([views count] > 1   && self.animatePins) { //Use a boolean to make sure animation does not get interrupted
    MKAnnotationView *animateAV;
    int i = 0;
    self.animatePins = NO;
    NSLog(@"did add annotationview, count:%d", [views count]);
    for (animateAV in views) {
      CGRect endFrame = animateAV.frame;
      i= i + 120;
      
      animateAV.frame = CGRectMake(animateAV.frame.origin.x, animateAV.frame.origin.y - (230.0+i), animateAV.frame.size.width, animateAV.frame.size.height);
      
      [UIView beginAnimations:nil context:NULL];
      [UIView setAnimationDuration:1];
      [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
      [animateAV setFrame:endFrame];
      [UIView commitAnimations];
    }
  }
}