注冊(cè)通知

        // 注冊(cè)鍵盤即將出現(xiàn)通知
        NotificationCenter.default.addObserver(self, selector: #selector(keyboardShow(_:)), name: UIResponder.keyboardWillShowNotification, object: nil)
        // 注冊(cè)鍵盤即將隱藏通知
        NotificationCenter.default.addObserver(self, selector: #selector(keyboardHide(_:)), name: UIResponder.keyboardWillHideNotification, object: nil)

監(jiān)聽事件

    /// 監(jiān)聽鍵盤即將出現(xiàn)事件
    @objc func keyboardShow(_ noti: Notification) {
        App.log("鍵盤即將出現(xiàn)")
        let info = noti.userInfo
        let kbRect = (info?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue
        UIView.animate(withDuration: 0.2) {
            self.transform = CGAffineTransform(translationX: 0, y: -(kbRect?.size.height ?? 0) / 2)
        }
    }
    
    /// 監(jiān)聽鍵盤即將隱藏事件
    @objc func keyboardHide(_ noti: Notification) {
        App.log("鍵盤即將隱藏")
        UIView.animate(withDuration: 0.2) {
            self.transform = CGAffineTransform(translationX: 0, y: 0)
        }
    }
  

移除通知

        // 移除鍵盤監(jiān)聽
        NotificationCenter.default.removeObserver(self, name: UIResponder.keyboardWillShowNotification, object: nil)
        NotificationCenter.default.removeObserver(self, name: UIResponder.keyboardWillHideNotification, object: nil)