Question

I have been following this tutorial to set up a tableview with storyboarding.

It’s all working, except in the beginning of the tutorial he starts with a tabBarView template and he embeds a UINavigationControl in that.

So this is the code that he comes up with – which works:

    UITabBarController *tabBarController = 
(UITabBarController *)self.window.rootViewController;

UINavigationController *navigationController = 
[[tabBarController viewControllers] objectAtIndex:0];

AlbumViewController *albumsViewController = 
[[navigationController viewControllers] objectAtIndex:0];
albumsViewController.albums = albums;

Which is part of:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:      (NSDictionary *)launchOptions
{
albums = [NSMutableArray arrayWithCapacity:5];
Album *album1 = [[Album alloc] init];
Album *album2 = [[Album alloc] init];
Album *album3 = [[Album alloc] init];
Album *album4 = [[Album alloc] init];
Album *album5 = [[Album alloc] init];

album1.albumName = @"Graduation";
album2.albumName = @"Dark and Twisted Fantasy";
album3.albumName = @"Torches";
album4.albumName = @"Nothing But The Beat";
album5.albumName = @"Angles";

album1.artist = @"Kanye West";
album2.artist = @"Kanye West";
album3.artist = @"Foster The People";
album4.artist = @"David Guetta";
album5.artist = @"The Strokes";

album1.rating = 5;
album2.rating = 5;
album3.rating = 5;
album4.rating = 5;
album5.rating = 5;

[albums addObject:album1];
[albums addObject:album2];
[albums addObject:album3];
[albums addObject:album4];
[albums addObject:album5];

UITabBarController *tabBarController = 
(UITabBarController *)self.window.rootViewController;

UINavigationController *navigationController = 
[[tabBarController viewControllers] objectAtIndex:0];

AlbumViewController *albumsViewController = 
[[navigationController viewControllers] objectAtIndex:0];
albumsViewController.albums = albums;

// Override point for customization after application launch.
return YES;
}

This part is posted in the AppDelegate.m
I am really trying everything, but nothing works.

Any Help would be great:-)

PS If I take out the tabView or comment out the first bit of code, the TableView shows, but there is no data in it.

Cheers Jeff

Answer 1

UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;  

Here, the code is getting the root view controller of the window, which from the original project was a tab bar controller. You have removed this, so this will be returning a navigation controller.

You’ve removed a level of containment from the view controller hierarchy. Your root view controller is now a navigation controller. So, I think the code you need is:

UINavigationController *navigationController = (UINavigationController *)self.window.rootViewController;
AlbumViewController *albumsViewController = [[navigationController viewControllers] objectAtIndex:0];        
albumsViewController.albums = albums;