ios10版本textView和textField注冊鍵盤通知

    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        print("Textfield獲得焦點(diǎn),點(diǎn)擊Return鍵")
        textField.resignFirstResponder()
        return true
    }
    
    func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
        
        if(text == "\n") {
            print("textview獲得焦點(diǎn),點(diǎn)擊return鍵")
            textView.resignFirstResponder()
            return false
        }
        return true
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        
        //注冊鍵盤出現(xiàn)通知
        NotificationCenter.default.addObserver(self, selector: #selector(keyboardDidShow(_:)), name: UIResponder.keyboardDidShowNotification, object: nil)
        
        //注冊鍵盤隱藏通知
        NotificationCenter.default.addObserver(self, selector: #selector(keyboardDidHide(_:)), name: UIResponder.keyboardDidHideNotification, object: nil)
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillAppear(animated)
   
        //注銷鍵盤出現(xiàn)通知
        NotificationCenter.default.removeObserver(self,name:UIResponder.keyboardDidShowNotification,object:nil)
        
        //注銷鍵盤隱藏通知
        NotificationCenter.default.removeObserver(self,name:UIResponder.keyboardDidHideNotification,object:nil)

    }
    
    
    @objc func keyboardDidShow(_ notification: Notification){
        print("鍵盤打開")
    }
    
    @objc func keyboardDidHide(_ notification: Notification){
        print("鍵盤關(guān)閉")
    }