How to retrieve stored reference to an NSManagedObject subclass?

[DevSdk]

Hi!

I have a NSManagedObject subclass named Tour. I stored the reference to it using this code:

 prefs = [NSUserDefaults standardUserDefaults];
NSURL *myURL = [[myTour objectID] URIRepresentation];
 NSData *uriData = [NSKeyedArchiver archivedDataWithRootObject:myURL];
 [prefs setObject:uriData forKey:@"tour"];

Now I want to retrieve it. I tried using:

NSData *myData = [prefs objectForKey:@"tour"];
  NSURL *myURL = [NSKeyedUnarchiver unarchiveObjectWithData:myData];

  TourAppDelegate *appDelegate = (TourAppDelegate *)[[UIApplication sharedApplication] delegate];

  NSManagedObjectID *myID = [appDelegate.persistentStoreCoordinator managedObjectIDForURIRepresentation:myURL];

  if (myID)
  {
  Tour *tempObject = [appDelegate.managedObjectContext objectWithID:myID]; //WARNING
  tour = tempObject;
  }

  if (tour) //instruction...

But it's giving me this warning "Incompatible Objective-c types. Initializing 'struct NSManagedObject *', expected 'struct Tour *'

How can I solve this?

[DevSdk]

Or is there any other method for saving and retrieving the reference to an nsmanagedobject subclass?

Thanks!

[noobdev]

Tour *tempObject = [appDelegate.managedObjectContext objectWithID:myID]; //WARNING

I think your warning comes from that. I think either:

1. Type cast the result: Tour *tempObject = (Tour *)[appDelegate.managedObjectContext objectWithID:myID)

OR

2. Use NSManagedObject: NSManagedObject *tempObject = [appDelegate.managedObjectContext objectWithID:myID];

Just wondering, do you know how to convert NSManagedObject to NSURL?

Hope that helps!