override func viewWillAppear(animated: Bool) { super.viewWillAppear(animated) UIApplication.sharedApplication().setStatusBarHidden(true, withAnimation: UIStatusBarAnimation.None)
}
override func viewWillDisappear(animated: Bool) { super.viewWillDisappear(animated) UIApplication.sharedApplication().setStatusBarHidden(false, withAnimation: UIStatusBarAnimation.None)
}