title: iOS map custom calloutView does not work with voiceOver
body: <p>When the VoiceOver is On, I can't select my custom callout view on iOS map. I just can select the map annotation to see the callout and when I want to select the callout, the street comes on top of my callout view.</p>
  
  <p>I am using SMCalloutView as a custom calloutView.</p>
  
  <p>Any help would be greatly appreciated.</p>