How to add navigation bar to my player page or video page

Question

Hi to all, i am creating a movie application on iphone. i have added navigation bar dynamically to my page i.e when it navigates from one page to another it shows navigation bar with a navigation item on the left hand side . on clicking the navigation item on the left side i can navigate to my page.But my code for navigation bar does not work properly for my player page and my video page i.e when i click on a particular song and the player page opens the navigation bar doesn't come and same is with video. this is my code for navigation bar:

- (id) init
{  
    self = [super init];  
    if (self != nil)
    {               
        // create a custom navigation bar button and set it to always say "Back"

        UIBarButtonItem *temporaryBarButtonItem = [[UIBarButtonItem alloc] init];  
        temporaryBarButtonItem.title = @"Back";
        self.navigationItem.backBarButtonItem = temporaryBarButtonItem;  
        [temporaryBarButtonItem release];  


        // set the title of this view

        self.title = NSLocalizedString(@"Videos", @"");  

        //self.view.backgroundColor = [UIColor groupTableViewBackgroundColor];
    }  
    return self;  
}  

Please help me in solving this problem