UIImageView not showing in iOS app

Question

I am working on an iOS app using 5.1 iPhone SDK. The app has 2 view controllers and a tab view controller. I am allocating a UIImageView from a library which is being linked to the app. The code to allocate the UIIMageView is being called from a function which is invoked after the app is initialised and launched. I use the code below to add the UIImageView.

UIWindow *window = [[UIApplication sharedApplication] keyWindow];
UIImageView *imgView = [[UIImageView alloc] initWithFrame:[window bounds]];
[window addSubview:imgView];
[window bringSubviewToFront:imgView];

The problem is that the imageView is not showing up when the app is run. I can't move the code out of the library or the function from where it is being called.

Appreciate any pointers.

Answer 1

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
    {
        // Override point for customization after application launch.
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
        UIImageView *imgView = [[UIImageView alloc] initWithFrame:[self.window bounds]];
        imgView.backgroundColor = [UIColor redColor];
        [self.window addSubview:imgView];
        [self.window bringSubviewToFront:imgView];
        
        [self.window makeKeyAndVisible];
        return YES;
    }