swift - Scrollview 滚动不适用于隐藏键盘？

Question

我有一个带有一些文本字段的 ScrollView 。滚动一开始很好，但隐藏键盘后，尽管 contentView 大于scrollView，滚动不起作用。我使用以下函数来显示和隐藏键盘:

func keyboardWasShown(notification: NSNotification){
        //Need to calculate keyboard exact size due to Apple suggestions
        self.scrollView.isScrollEnabled = true
        var info = notification.userInfo!
        let keyboardSize = (info[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue.size
        let contentInsets : UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, keyboardSize!.height, 0.0)

        self.scrollView.contentInset = contentInsets
        self.scrollView.scrollIndicatorInsets = contentInsets

        var aRect : CGRect = self.view.frame
        aRect.size.height -= keyboardSize!.height
        if let activeField = self.activeField {
            if (!aRect.contains(activeField.frame.origin)){
                self.scrollView.scrollRectToVisible(activeField.frame, animated: true)
            }
        }
    }

func keyboardWillBeHidden(notification: NSNotification){
        //Once keyboard disappears, restore original positions
        var info = notification.userInfo!
        let keyboardSize = (info[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue.size
        let contentInsets : UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, -keyboardSize!.height, 0.0)
        self.scrollView.contentInset = contentInsets
        self.scrollView.scrollIndicatorInsets = contentInsets
        self.view.endEditing(true)
        self.scrollView.isScrollEnabled = true
    }

Answer 1

如果您想关闭键盘，请将 UIKeyboardFrameBeginUserInfoKey 更改为 UIKeyboardFrameEndUserInfoKey。