ViewController view starts with at ~(0,20) - objective-c

Question

I've tried starting view based app and window based app but I still have the same problem.
When I add a navigation bar it looks like it starts at cords ~(0,20) and leaves some space between the it and the "system tray" (i can't find the word for the dock with clock and batteri etc.)
i can't figure out why this occurs because the nslog of frame tells me that it origins in (0,0) (and strangely the width is 0 :/ but it is clearly visible).
code:
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
UIImageView *image = [[UIImageView alloc] initWithFrame:CGRectMake(self.view.frame.origin.x,
self.view.frame.origin.y+48.0f,
self.view.frame.size.width,
self.view.frame.size.height)];
[image setImage:[UIImage imageNamed:#"IMG_0792.PNG"]];
[self.view addSubview:image];
self.navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(self.view.frame.origin.x,
self.view.frame.origin.y,
self.view.frame.size.width,
45.0f)];
[navBar setDelegate:self];
[navBar pushNavigationItem: [[UINavigationItem alloc] initWithTitle:#"Image Stream"] animated:NO];
[self.view addSubview:navBar];
}
return self;
}
and in the appdelegate i just declare it, retain-property and:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.menu = [[MenuViewController alloc] initWithNibName:nil bundle:nil];
[self.window setRootViewController:menu];
[self.window makeKeyAndVisible];
return YES;
}
would be very nice if someone knew why this happens. thanks

Answer 1

When positioning a view using the coordinates of the superview, use bounds, not frame. If there's a status bar, your superview.frame.x will be non-zero, but the subview's coordinates are relative to the superview, not the position.

Answer 2

Check the following:
In your UIViewController's Xib if it has status bar. If yes, then put None. (You can set that in the inspector, just select your root UIView.
Are you adding your UIViewController to your App delegate's by XIB? If yes, go check in the App's delegate xib your UIViewController and see if it has status bar.
p.s: its called status bar.
Edit what about the frame you use for your UINavigation? The 45.0f.