Question

As the title says the app freezes at the start screen then xcode comes up and displays a green arrow near

 self.window.rootViewController = self.viewController;
 [self.window makeKeyAndVisible];

Any ideas? Thanks!

Update
Here is the full block of code:

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 {
MainViewController *aViewController = [[MainViewController alloc]       initWithNibName:@"MainViewController" bundle:nil];
self.viewController = aViewController;

[aViewController release];

[window addSubview:[navigationController view] ];
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];

return YES;
 }

Answer 1

Well as far as I understood, you just want to make your own viewController at startup. Well copy paste the following code I am telling you and give your response.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {


MainViewController *aViewController = [[MainViewController alloc] initWithNibName:@"MainViewController" bundle:nil];

[self.window setRootViewController:aViewController];

[self.window makeKeyAndVisible];

return YES;

}

Kindly check once that its setRootViewController or rootViewController only. I didnt remember exactly. Hope you got the idea.

Happy Coding!