隐藏和取消隐藏堆栈视图

Question

我试图在键盘上升时隐藏堆栈视图，然后在键盘再次下降时再次取消隐藏它。 问题是，当取消隐藏堆栈视图时，视图（我有一些按钮）不在屏幕上吗？

func keyboardWillShow(notification: NSNotification) {

    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue() {
        self.view.frame.origin.y -= keyboardSize.height
        self.myStackView.hidden = true
    }
}

func keyboardWillHide(notification: NSNotification) {
    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue() {
        self.view.frame.origin.y += keyboardSize.height
        self.myStackView.hidden = false
    }
}

Answer 1

您可以尝试将“堆栈视图”的Alpha设置为0，以使其看起来不可见，但仍然存在。

func keyboardWillShow(notification: NSNotification) {

    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue() {
        self.view.frame.origin.y -= keyboardSize.height
        self.myStackView.alpha = 0
    }
}

func keyboardWillHide(notification: NSNotification) {
    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue() {
        self.view.frame.origin.y += keyboardSize.height
        self.myStackView.alpha = 0
    }
}