title: MapView not showing Blue Dot Current Location
body: <p>In my iphone app I am using MKMapview to show locations,for the first time it showing current location with a blue dot.But if drag away in map and click the current location button it doesnt show the blue dot(but I am able to return the current location region)</p>
  
  <pre><code>-(IBAction)currntLctnClick:(id)sender{
    [map setCenterCoordinate:map.userLocation.location.coordinate animated:YES];
  }    
  </code></pre>