This handles ViewController based StatusBar hiding in iOS6 and iOS7

Set ViewController Base StatusBar to Hidden in iOS6 & iOS7

// Place in the ViewController
-(BOOL)prefersStatusBarHidden {
  return YES;
}

// Place in viewWillAppear or viewDidLoad
if ([self respondsToSelector:@selector(setNeedsStatusBarAppearanceUpdate)]) {
  [self performSelector:@selector(setNeedsStatusBarAppearanceUpdate)]; // iOS 7
} else {
  [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide]; // iOS 6
}