Ios 当视图控制器内部有滚动视图时处理键盘事件

在我的项目中，有一个视图控制器嵌入在选项卡栏控制器中。此视图控制器有一个显示抽屉的按钮（视图中的幻灯片）。我正在使用第三方库进行此操作。从现在起，我将在面板视图控制器中引用它

此面板视图控制器是一个内部带有滚动视图的简单视图控制器。scrollview中有一个堆栈视图。所有其他子视图（绿色和橙色视图）都通过堆栈视图进行布局

橙色视图的底部有一个文本字段。我编写了下面的代码来处理键盘事件，将文本字段移到键盘上方并向下移动

@objc private func didReceiveKeyboardNotification(_ notification: Notification) {
    if
        let userInfo = notification.userInfo,
        let endValue = userInfo[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue,
        let duration = userInfo[UIResponder.keyboardAnimationDurationUserInfoKey] as? Double,
        let curve = userInfo[UIResponder.keyboardAnimationCurveUserInfoKey] as? UInt {

        // Transform the keyboard's frame into our view's coordinate system
        let endRect = view.convert(endValue.cgRectValue, from: view.window)

        // Find out how much the keyboard overlaps the scroll view
        // We can do this because our scroll view's frame is already in our view's coordinate system
        let keyboardOverlap = scrollView.frame.maxY - endRect.origin.y

        // Set the scroll view's content inset to avoid the keyboard
        // Don't forget the scroll indicator too!
        scrollView.contentInset.bottom = keyboardOverlap
        scrollView.verticalScrollIndicatorInsets.bottom = keyboardOverlap

        UIView.animate(withDuration: duration, delay: 0, options: UIView.AnimationOptions(rawValue: curve), animations: {
            self.view.layoutIfNeeded()
        }, completion: nil)
    }
}

键盘关闭后，视图应移回初始位置。问题是scrollview没有重置到原始位置。textfield最终低于您看到的初始位置

我想不出这里有什么问题

---

试试看。我有一个类似的问题，这解决了它没有任何代码，它只是工作。

你的

direceivekeyboardnotification

方法中的问题。您正在使用相同的方法来处理显示/隐藏键盘，并且在这两种情况下，您都会使

scrollView.contentInset.bottom=keyboardOverlap

，因此在键盘将隐藏后，您的插入将设置为0。这是更正确的方法：

        if notification.name == UIResponder.keyboardWillHideNotification {
            let inset = tabBarController?.tabBar.frame.size.height as! CGFloat //Tabbar height
            scrollView.contentInset.bottom = inset
            scrollView.verticalScrollIndicatorInsets.bottom = inset
        }

        if notification.name == UIResponder.keyboardWillShowNotification {
            scrollView.contentInset.bottom = keyboardOverlap
            scrollView.verticalScrollIndicatorInsets.bottom = keyboardOverlap
        }