view controller does not load with content - iphone

Question

I have a button that when clicked shows a view controller. The code for that event is:
and my view controller looks like this:
note the segmented control and background image.
Here is my h and m files of my view controller in case you need them:
when I run my app here is how that view control looks on my iPad:
why do the background image and segmented control do not appear? why are contents not being loaded? It looks like another view controller is being loaded but I have already make sure that I am placing the correct name in the string for the view controller.
- (IBAction) vaClick
{
imgVa.image = [UIImage imageNamed:#"bt-valores.png"];
UIViewController *control = [[NuestrosValoresViewController alloc] initWithNibName:#"NuestrosValoresViewController"
bundle:nil];
UINavigationController *navControl = [[UINavigationController alloc]
initWithRootViewController:control];
[self presentModalViewController:navControl animated:NO];
[navControl setNavigationBarHidden:YES];
[control release];
[navControl release];
//UINavigationController *navControl = [[UINavigationController alloc]
//initWithRootViewController:control];
//[self presentModalViewController:navControl animated:NO];
}
should I release it like this? sorry I basically have to translate a power point presentation to an app therefore I know very little about objective-c. thanks for the help and sorry for the dumb question.

Answer 1

You're not setting the root view controller of your UINavigationController.
Use this line instead when initializing the navigation controller:
UINavigationController *navControl = [[UINavigationController alloc] initWithRootViewController:control];
You'll also want to release navControl after you present it modally. I'll write out the code for you if you post your code instead of using screenshots.