title: How to set marker in ios MKMapView
body: <p>How to set marker in <code>MKMapView</code> 
  Here is my code to set a latitude and longitude but i dont know how to set marker 
  please give me solution.</p>
  
  <pre><code>    CLLocationCoordinate2D center;
      center.latitude = latitude;
      center.longitude = longitude;
  
      CLLocationCoordinate2D location = mapView.userLocation.coordinate;
      MKCoordinateRegion region;
      MKCoordinateSpan span;
  
      location.latitude  = center.latitude;  //37.250556;
      location.longitude = center.longitude; //-96.358333;
  
      span.latitudeDelta = 0.05;
      span.longitudeDelta = 0.05;
  
      region.span = span;
      region.center = location;
  
      [mapView setRegion:region animated:YES];
      [mapView regionThatFits:region];
  </code></pre>