我有一个带有TableView和textView的ViewController。我使用下面的代码，以便当键盘出现时，它会向上推textView和TableView。

bindToKeyboard

extension UIView {

    func bindToKeyboard(){
        NotificationCenter.default.addObserver(self, selector:
            #selector(UIView.keyboardWillChange(_:)), name:
            UIResponder.keyboardWillChangeFrameNotification, object: nil)
    }

    @objc func keyboardWillChange(_ notification: NSNotification) {
        let duration = notification.userInfo!
        [UIResponder.keyboardAnimationDurationUserInfoKey] as! Double
        let curve = notification.userInfo![UIResponder.keyboardAnimationCurveUserInfoKey]
            as! UInt
        let curFrame = (notification.userInfo![UIResponder.keyboardFrameBeginUserInfoKey]
            as! NSValue).cgRectValue
        let targetFrame = (notification.userInfo![UIResponder.keyboardFrameEndUserInfoKey]
            as! NSValue).cgRectValue
        let deltaY = targetFrame.origin.y - curFrame.origin.y

        UIView.animateKeyframes(withDuration: duration, delay: 0.0, options:
            UIView.KeyframeAnimationOptions(rawValue: curve), animations: {
                self.frame.origin.y += deltaY

        },completion: {(true) in
            self.layoutIfNeeded()
        })
    }
}

我遇到的问题是tableView中的顶部单元格，除非关闭键盘，否则无法向下滚动以显示它们。我一直在寻找可能的代码样本来解决这个问题，但我似乎找不到正确的解决方案。任何输入都非常感谢。

解决方案

将观察者添加到viewDidLoad

let notificationCenter = NotificationCenter.default

notificationCenter.addObserver(self, selector: #selector(adjustForKeyboard), name: UIResponder.keyboardWillHideNotification, object: nil)

notificationCenter.addObserver(self, selector: #selector(adjustForKeyboard), name: UIResponder.keyboardWillChangeFrameNotification, object: nil)

这是添加到类

@objc func adjustForKeyboard(notification: Notification) {

        guard let keyboardValue = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue else { return }

        let keyboardScreenEndFrame = keyboardValue.cgRectValue

        let keyboardViewEndFrame = view.convert(keyboardScreenEndFrame, from: view.window)

        if notification.name == UIResponder.keyboardWillHideNotification {
            tableView.contentInset = .zero
        } else {
            //Modify the top insets to 350 and the height of the keyboard > 10 ? 10 : 10
            //to eliminate the gap between the bottom cell and the textView
            tableView.contentInset = UIEdgeInsets(top: 350, left: 0, bottom: keyboardViewEndFrame
                .height > 10 ? 10 : 10, right: 0)
        }
        tableView.scrollIndicatorInsets = tableView.contentInset
    }

希望这对任何人都有帮助。