如何获取键盘的高度，包括Swift 4中的建议栏

Question

我用了 ：

NotificationCenter.default.addObserver(self, selector:#selector(keyboardWillShow), name: .UIKeyboardWillShow, object: nil)

@objc func keyboardWillShow(notification: NSNotification) {
      if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
      let keyboardHeight : Int = Int(keyboardSize.height)
      print("keyboardHeight",keyboardHeight)
      KeyboardHeightVar = keyboardHeight
      }
}

进行更改以获取键盘的高度，但高度不包括建议栏。如何获得键盘高度加上建议栏高度的值？

Answer 1

使用UIKeyboardFrameEndUserInfoKey而不是UIKeyboardFrameBeginUserInfoKey返回正确的键盘高度。例如，如果键盘没有工具栏，则返回 216.0 高度。使用工具栏 - 260.0

Answer 2

使用UIKeyboardFrameEndUserInfoKey代替UIKeyboardFrameBeginUserInfoKey和UIKeyboardDidShow代替UIKeyboardWillShow。

NotificationCenter.default.addObserver(self, selector: 

#selector(keyboardWillShow), name: .UIKeyboardDidShow, object: nil)
    @objc func keyboardWillShow(notification: NSNotification) {

            if let keyboardSize = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
                let keyboardHeight : Int = Int(keyboardSize.height)
                print("keyboardHeight",keyboardHeight)
                KeyboardHeightVar = keyboardHeight
            }

        }