按下键盘Swift iOS后，我的Scrollview不会一直向上滚动

Question

我有一个带有许多文本字段的滚动视图。当我向上滚动滚动视图以使键盘不会隐藏某些子视图时，我无法一直滚动到滚动视图的顶部。这是我的代码。有人可以帮忙吗？

class IncomingPackageViewController: UIViewController{
    override func viewDidLoad() {
        super.viewDidLoad()
        NotificationCenter.default.addObserver(self,selector:#selector(self.keyboardWillShow),name:UIResponder.keyboardDidShowNotification, object: nil)
        NotificationCenter.default.addObserver(self,selector: #selector(self.keyboardWillHide),name:UIResponder.keyboardDidHideNotification, object: nil)

    }

    @objc func keyboardWillShow(notification: Notification) {
        guard let userInfo = notification.userInfo,
            let frame = (userInfo[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue else {return}
        let contentInset = UIEdgeInsets(top: 0, left: 0, bottom: frame.height, right: 0)
        if self.view.frame.origin.y == 0 {
            self.view.frame.origin.y -= contentInset.bottom
        }
    }

    @objc func keyboardWillHide(notification: Notification) {
        if self.view.frame.origin.y != 0 {
            self.view.frame.origin.y = 0
        }
    }
}

Answer 1

您应该使用scrollView.contentInset，不要弄乱ViewControllers视图框架。

我还建议您使用tableView，因为它免费提供了该功能。