Question

Please note that I am trying to learn iphone and for this problem, i can’t figure out any solution.

I have created an empty view with the name of Loading. I have filled its Loading.xib with some images. Now this is the code I am using

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    Loading *firstView = [[Loading alloc]init];


    self.navigationController = [[UINavigationController alloc]init]; 
    self.navigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent;
    [self.navigationController pushViewController:firstView animated:YES];
    // Override point for customization after application launch.
    [self.window addSubview:self.navigationController.view];
    [window makeKeyAndVisible];
    return YES;
}

The problem is , when ever i run the code, it just shows the blank screen.

How can i load the loading screen. Any recommended tutorial links are welcomed

@implementation Loading

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

Best Regards

Answer 1

First of all, Loading is a view not view controller. You shouldn’t push it with navigation controller.

Secondly, it is not a good idea to add the navigation controller’s view to the window.

Please check this thread for more detail about UIView and UIViewController

Instead, you may want to create a LoadingViewController, and change its view(XIB file) as what you want, then use code like this

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
LoadingViewController *lvc= [[LoadingViewController alloc]init];

self.navigationController = [[UINavigationController alloc] initWithRootViewController:lvc]; 
self.navigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent;
// Override point for customization after application launch.
self.window.rootViewController = self.navigationController;
[window makeKeyAndVisible];
return YES;
}