Question

Hi I just started experimenting on iOS 5. I created a project without storyboard and trying to add views programmatically (no use of interface builder at all). I have following code but rootViewController property of the window does not seem to work. I did NSLog on self.tabController and it shows me value(not null) but on the other side when after self.window.rootViewController = self.tabController, i output self.window.rootViewController it gives me null in console.

I have been struggling with this issue for a long time now. Any help would be appreciated.

Following is my didFinishLaunching method:

self.dataSource = [[[ADJWebDataSource alloc] init] autorelease];

ADJBrowseListingsViewController *browseListingsVC = [[ADJBrowseListingsViewController alloc] init];

ADJSecondViewController *secondVC = [[ADJSecondViewController alloc] init];
tabBarController = [[UITabBarController alloc] init];   
tabBarController.view.frame = CGRectMake(0, 0, 320, 460);
navController = [[UINavigationController alloc] initWithRootViewController:browseListingsVC];    
NSMutableArray* viewControllers = [[NSMutableArray alloc] initWithCapacity:2];

[viewControllers addObject:browseListingsVC];
[viewControllers addObject:secondVC];

[navController release];
[browseListingsVC release];
[secondVC release];

tabBarController.viewControllers = viewControllers;  
[viewControllers release]; 
browseListingsVC.dataSource = self.dataSource;   
NSLog(@"controller %@", self.tabBarController);   
self.window.rootViewController = self.tabBarController;   
NSLog(@"controller1 %@", self.window.rootViewController);
[self.window makeKeyAndVisible];

return YES;

Thanks
Vik

Answer 1

Figured it out with the help of Firoze. Actually, I had to allocate and initialize self.window programmatically. I was confused as I never had to do that in iOS 4 or earlier. But then I just realized prior to iOS5, every project has a MainWindow.xib which had self.window allocated and initialized, now if I am not using storyboard in iOS5, there is no .xib file, I needed to allocate and initialize it myself in the code