swift2 語法 語法 判斷鍵盤高度

語法2.2

NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(MusicViewController.keyboardWasShown(_:)), name: UIKeyboardDidShowNotification, object: nil)
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語法2.0

  NSNotificationCenter.defaultCenter().addObserver(self, selector:      "keyboardWillDisappear:", name:UIKeyboardWillHideNotification, object: nil)



    func keyboardWasShown(notification: NSNotification) {

  // 獲取鍵盤資訊
  let keyboardinfo = notification.userInfo![UIKeyboardFrameBeginUserInfoKey]

  let keyboardheight:CGFloat = (keyboardinfo?.CGRectValue.size.height)!

  print("鍵盤彈起")

  print(keyboardheight)
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}

func keyboardWillDisappear(notification:NSNotification){

  print("鍵盤落下")
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}