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.