Swift 4:当键盘显示时移动uiview

NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow(_:)), name: UIResponder.keyboardWillShowNotification, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide(_:)), name: UIResponder.keyboardWillHideNotification, object: nil)

@objc func keyboardWillShow(_ notification: Notification) {
    if let keyboardSize = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
        let keyboardHeight = keyboardSize.height
        // 根据需要移动的UIView的位置进行调整
        // 例如，将UIView的底部与键盘的顶部对齐
        UIView.animate(withDuration: 0.3) {
            self.view.frame.origin.y = -keyboardHeight
        }
    }
}

@objc func keyboardWillHide(_ notification: Notification) {
    UIView.animate(withDuration: 0.3) {
        self.view.frame.origin.y = 0
    }
}