title: How to rotate iOS MKMapView so that it north-oriented when switching tracking mode?
body: <p>I am working on an iPad app (iOS 5.1), and I use MKMapView to display a map in my app.</p>
  
  <p>I am switching between the three different map orientation modes using MKUserTrackingModeNone, MKUserTrackingModeFollow, MKUserTrackingModeFollowWithHeading and this works. </p>
  
  <p>However I have a problem with the orientation of the map not resetting to north-facing orientation (north on the map being at the top of the screen) when switching from MKUserTrackingModeFollowWithHeading to MKUserTrackingModeNone. </p>
  
  <p>On the built-in maps app on the ipad, the flow is like this:</p>
  
  <ol>
  <li>When you start the app it is in mode MKUserTrackingModeNone and is north-oriented</li>
  <li>When you toggle the orientation mode it changes to MKUserTrackingModeFollow, and the orientation is still north.</li>
  <li>When you switch again, it changes to MKUserTrackingModeFollowWithHeading, and the  map rotates according to the direction you are facing/pointing the iPad.</li>
  <li>When you switch orientation again, it goes back to MKUserTrackingModeNone, and the map nicely rotates back to being north-oriented.</li>
  </ol>
  
  <p>I would like my app to behave in the same way in regards to orientation when switching mode, but when I do as in step 4 above and <strong>switch from MKUserTrackingModeFollowWithHeading to MKUserTrackingModeNone</strong>, the orientation stays as it was just before making the orientation switch instead of rotating back to north orientation.</p>
  
  <p>I am making the orientation switch with the standard MKUserTrackingBarButtonItem control placed in a toolbar.</p>
  
  <p>Any ideas of how to solve this?</p>
  
  <p>Thanks!</p>