隐藏和取消隐藏堆栈视图

Question

我正在尝试在键盘启动时隐藏堆栈视图，然后在键盘再次向下移动时再次取消隐藏。问题是当堆栈视图被取消隐藏时，视图（我有一些按钮）在屏幕外？

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

您可以尝试将堆叠视图的alpha设置为0，这样它看起来似乎不可见，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
    }
}