Can't pass NSManagedObjectContext to TableViewClass - objective-c

Question

I've got the problem to pass my managedobjectcontext to my tableviewcontroller. It doesn't with UserDefaults or with Notification. My storyboard is too big to pass it from my RootViewController:
AppDelegate:
-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
Schulung *first = [NSEntityDescription insertNewObjectForEntityForName:#"Schulung" inManagedObjectContext:self.managedObjectContext];
first.name=#"testname";
first.info=#"testinfo";
first.location=#"testlocation";
Abhaltungsdatum *firstDate = [NSEntityDescription insertNewObjectForEntityForName:#"Abhaltungsdatum" inManagedObjectContext:self.managedObjectContext];
firstDate.datum = [NSDate date];
firstDate.schulung=first;
Abhaltungsdatum *secondDate = [NSEntityDescription insertNewObjectForEntityForName:#"Abhaltungsdatum" inManagedObjectContext:self.managedObjectContext];
secondDate.datum=[NSDate date];
secondDate.schulung=first;
NSLog(#"Entities: %#",[[self.managedObjectContext.persistentStoreCoordinator.managedObjectModel entities]valueForKey:#"name"]);
// NSUserDefaults *theDefaults = [NSUserDefaults standardUserDefaults];
// NSData *data = [NSKeyedArchiver archivedDataWithRootObject:self.managedObjectContext];
// [theDefaults setObject:data forKey:#"managedObjectContext"];
// [theDefaults synchronize];
NSNotificationCenter *theCenter = [NSNotificationCenter defaultCenter];
NSDictionary *dictionary = [NSDictionary dictionaryWithObject:self.managedObjectContext forKey:#"context"];
[theCenter postNotificationName:#"managedObjectContext" object:nil userInfo:dictionary];
return YES;
}
myTableViewController:
-(void)viewDidLoad
{
[super viewDidLoad];
NSNotificationCenter *theCenter = [NSNotificationCenter defaultCenter];
[theCenter addObserver:self selector:#selector(addManagedObjectContext:) name:#"managedObjectContext" object:nil];
// NSUserDefaults *theDefaults = [NSUserDefaults standardUserDefaults];
// NSData *data = [theDefaults objectForKey:#"managedObjectContext"];
// self.managedObjectContext = [NSKeyedUnarchiver unarchiveObjectWithData:data];
// [theDefaults synchronize];
NSLog(#"Entities: %#",[[self.managedObjectContext.persistentStoreCoordinator.managedObjectModel entities]valueForKey:#"name"]);
NSFetchRequest *theRequest = self.fetchRequest;
NSFetchedResultsController *theController = [[NSFetchedResultsController alloc] initWithFetchRequest:theRequest managedObjectContext:self.managedObjectContext sectionNameKeyPath:nil cacheName:#"Root"];
NSError *theError = nil;
theController.delegate = self;
if([theController performFetch:&theError]) {
self.fetchedResultsController = theController;
}
else {
NSLog(#"viewDidLoad: %#", theError);
}
}
-(void)addManagedObjectContext:(NSNotification *)note{
self.managedObjectContext = [[note userInfo]valueForKey:#"context"];
}
The NSUserDefault Object gets nil when passed and the Notification doesn't come through.