title: How to clear MKMapView cache?
body: <p>I am trying load map region and MKMapView delegate methods are not being called on second or subsequent load. None of the delegate methods viz</p>
  
  <pre><code>- (void)mapViewWillStartLoadingMap:(MKMapView *)mapView;
  - (void)mapViewDidFinishLoadingMap:(MKMapView *)mapView;
  - (void)mapViewDidFailLoadingMap:(MKMapView *)mapView withError:(NSError *)error;
  </code></pre>
  
  <p>are ever called. The Only methods called are </p>
  
  <pre><code>- (void)mapView:(MKMapView *)mapView regionWillChangeAnimated:(BOOL)animated;
  - (void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated;
  </code></pre>
  
  <p>It seems that ios4 is caching mapview tiles images.</p>
  
  <p>I found these lines in MKMapViewDelegate Protocol Reference documentation. Highlighted line is my problem.</p>
  
  <p>This method is called when the map tiles associated with the current request have been loaded. <strong>Map tiles are requested when a new visible area is scrolled into view and tiles are not already available</strong>. Map tiles may also be requested for portions of the map that are not currently visible. For example, the map view may load tiles immediately surrounding the currently visible area as needed to handle small pans by the user.</p>
  
  <p>I need to perform certain operations after the map is loaded but since none of the above mentioned delegate methods are getting called I am not able to perform desired functionality. Can anyone suggest a fix to either clear the cache or provide an alternative solution for this ? I have already tried using the methods described <a href="https://stackoverflow.com/questions/1917257/clear-mkmapviews-cache-of-tiles">here</a> and <a href="https://stackoverflow.com/questions/4377776/how-can-i-clear-mkmapviews-cache-of-map-tiles">this</a> but I am still not been able to get the code working.</p>