键盘高度在 Swift 中无法正常工作

Question

我正在使用以下代码在键盘显示和隐藏时调整当前视图。当键盘显示代码有效时，但当它隐藏视图时，视图在底部滑动移动，并在顶部保持黑色 space。 如何解决？

@objc func keyboardWillAppear(notification: Notification){
    if let keyboardFrame: NSValue = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue {
        let keyboardRectangle = keyboardFrame.cgRectValue
        let keyboardHeight = keyboardRectangle.height
        self.view.frame.origin.y = -keyboardHeight/2
    }
}

@objc func keyboardWillHide(notification: Notification){
    if let keyboardFrame: NSValue = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue {
        let keyboardRectangle = keyboardFrame.cgRectValue
        let keyboardHeight = keyboardRectangle.height
        self.view.frame.origin.y = +keyboardHeight/2
    }
}

Answer 1

您可以变换视图而不是分配给原点

@objc func keyboardWillAppear(notification: Notification){
    if let keyboardFrame: NSValue = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue {
        let keyboardRectangle = keyboardFrame.cgRectValue
        let keyboardHeight = keyboardRectangle.height
        self.view.transform = CGAffineTransform(translationX: 0, y: -keyboardHeight/2)
    }
}

@objc func keyboardWillHide(notification: Notification){
        self.view.transform = .identity
}

键盘高度在 Swift 中无法正常工作

Keyboard height not working properly in Swift

keyboard

uiviewcontroller

uiresponder

ios

swift