我试图在键盘出现时向上移动视图，在键盘隐藏时向下移动 .

我遇到的问题是高度似乎不同：KBH1输出216，KBH2输出260 .

这导致视图向下移动得比最初移动的距离更远 .

我该如何纠正这个？

extension UIViewController {

func addKeyboardFunctions() {

let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(dismissKeyboardEx))

// tap.cancelsTouchesInView = false

view.addGestureRecognizer(tap)

NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillDisappear), name: Notification.Name.UIKeyboardWillHide, object: nil)

NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillAppear), name: Notification.Name.UIKeyboardWillShow, object: nil)

}

@objc func keyboardWillAppear(_ notification: NSNotification) {

if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {

if self.view.frame.origin.y == 0{

self.view.frame.origin.y -= keyboardSize.height

print("KBH: \(keyboardSize.height)")

}

}

}

@objc func keyboardWillDisappear(_ notification: NSNotification) {

if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {

if self.view.frame.origin.y != 0{

self.view.frame.origin.y += keyboardSize.height

print("KBH: \(keyboardSize.height)")

}

}

}