@IBOutlet weak var page22TextView: UITextView?
var strTitle: String!
var pageIndex: Int = 0
var bookPageNumber = ""
var indexPageSum: Int!
var isHidden:Bool = false
var textBoxP22 = ""

override var preferredStatusBarUpdateAnimation : UIStatusBarAnimation {
    return UIStatusBarAnimation.slide
}

override var prefersStatusBarHidden : Bool {
    return isHidden
}

override func viewDidLoad() {
    super.viewDidLoad()

    page22TextView?.delegate = self

    self.page22TextView?.text = "work"

    if page22TextView == nil {
        print("I am Nil")
    } else {
        page22TextView?.text = "name"
    }
}