title: Convert MKAnnotation Coordinates to View Coordinates
body: <p>I am displaying a custom UIView when the user clicks on the pin (Like the Zillow app). Now the problem is that I need to place the view right above the actual pin. The MKAnnotationView coordinates system is related to the map. How can I get the coordinates with respect to the iPhone screen and then place my view on that coordinate.</p>
  
  <pre><code>- (void)mapView:(MKMapView *)mv didSelectAnnotationView:(MKAnnotationView *)view
  {  
      // get view from storyboard 
      ZillowSearchResultAnnotation *annotation = (ZillowSearchResultAnnotation *) view.annotation;
  
      PropertyAbstractViewController *propertyAbstractViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"PropertyAbstractIdentifier"];
      propertyAbstractViewController.view.frame = CGRectMake(0, 0, 100, 100);
  
      [propertyAbstractViewController bind:annotation.data];
  
      [mv addSubview:propertyAbstractViewController.view];
  
  }
  </code></pre>