iPhone Navigation Bar Black and Transparent!!!

@interface MyViewController ()
NSTimer *fadeTimer;
@property (nonatomic, retain) NSTimer *fadeTimer;
- (void) fadeBarController;
- (void) fadeBarAway:(NSTimer *)timer;
- (void) fadeBarIn;
@end

@implementation MyViewController
@synthesize fadeTimer;

#pragma mark -
#pragma mark View Lifecycle
-(void) viewWillAppear:(BOOL)animated {
[[UIApplication sharedApplication]
 setStatusBarStyle:UIStatusBarStyleBlackTranslucent animated: YES];
self.navigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent;
}

- (void) viewDidAppear:(BOOL)animated {
 [self fadeBarController];
}

- (void) viewDidDisappear:(BOOL)animated {
 [self.fadeTimer invalidate];
}

- (void)dealloc {
 [fadeTimer release];
}

#pragma mark -
#pragma mark Fade In/Out code
- (void) touchesEnded: (NSSet *) touches withEvent: (UIEvent *) event {
 [super touchesEnded: touches withEvent: event];
 [self fadeBarController];
}

- (void)fadeBarController {
 if (self.navigationController.navigationBar.alpha == 0)
 {
    [self fadeBarIn];
 }

 if (self.fadeTimer != nil)
 {  
    [self.fadeTimer invalidate];
 }
 self.fadeTimer  = [NSTimer
    scheduledTimerWithTimeInterval:kNavigationBarFadeDelay target:self
    selector:@selector(fadeBarAway:) userInfo:nil repeats:NO];
}

- (void)fadeBarAway:(NSTimer*)timer {
 [UIView beginAnimations:nil context:NULL];
 [UIView setAnimationDuration:0.35];
 self.navigationController.navigationBar.alpha = 0.0;
 [[UIApplication sharedApplication] setStatusBarHidden:YES animated:YES];
 [UIView commitAnimations];
}

- (void)fadeBarIn {
 [UIView beginAnimations:nil context:NULL];
 [UIView setAnimationDuration:0.35];
 self.navigationController.navigationBar.alpha = 1.0;
 [[UIApplication sharedApplication] setStatusBarHidden:NO animated:YES];
 [UIView commitAnimations];
}

@end