How do I know the window of my view? - objective-c

Question

ViewWillAppear is never called automatically I have to call them manually. ViewWillDisappear is often called though.
I do not know where to debug this.
I suppose the problem is because I created the application on 4.1 where people have to call viewWillAppear explicitly.
I suppose, because viewWillAppear will be called depending on its relation with window I can check if my viewController has an outlet to window.
How do I do so?
I suspected the problem is somewhere in my delegate:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[Crashlytics startWithAPIKey:#"a08863b514ef09558ba82fec070cc7468fdbeeae"];
if(getenv("NSZombieEnabled") || getenv("NSAutoreleaseFreedObjectCheckEnabled"))
{
NSLog(#"NSZombieEnabled/NSAutoreleaseFreedObjectCheckEnabled enabled!");
}
[self.window addSubview:self.navController.view]; //This seem to be the problem. I should have specified the viewController and not the view
[self.navController pushViewController:self.MainBadgerApplication animated:YES];
//[cachedProperties singleton].lastAnchor =[cachedProperties currentLocation];
[cachedProperties singleton].currentAnchor=[cachedProperties currentLocation];
self.MainBadgerApplication.selectedIndex=0;
[BNUtilitiesQuick tabBarController:self.MainBadgerApplication didSelectViewController:self.MainBadgerApplication.selectedViewController];
[self.window makeKeyAndVisible];
return YES;
}
I suspected that
[self.window addSubview:self.navController.view]; is the issue.
Also I've heard before ios5 you do have to call viewController explicitly. So should I create a different program for ios5 and ios4 (not like there is any danger in calling viewController twice for my program)

Answer 1

I suspected that [self.window addSubview:self.navController.view]; is the issue.
Probably. You should be doing this instead:
self.window.rootViewController = self.navController;
Just adding the view doesn't put your view controller into the hierarchy properly. See the WWDC 2011 view controller containment video for more information.