如何在iPhonex中使用AutoLayout处理带有安全区域的键盘？

在iphone x中设置安全区域后。当键盘打开时，安全区域（键盘上方的白色区域）位于键盘上方，那么如何操作键盘？

键盘上方的白色区域。

处理键盘代码：-

func keyboardWillChangeFrameWithNotification(_ notification: Notification, showsKeyboard: Bool) {

        let userInfo = notification.userInfo!
        let animationDuration: TimeInterval = (userInfo[UIKeyboardAnimationDurationUserInfoKey] as! NSNumber).doubleValue
        let keyboardScreenEndFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue

        // keyboardRect = [self.view convertRect:keyboardRect fromView:nil];
        let keyBoardRect = self.view.convert(keyboardScreenEndFrame, from:nil)

        UIView.animate(withDuration: animationDuration, delay: 0, options: .beginFromCurrentState, animations: {

            // Keyboard is going to appear. move composebar up
            if showsKeyboard {
                self.constraintBottomAttachmentView.cOnstant=  keyBoardRect.size.height
            } else { // Keyboard is going to disappear. Move composebar down.
                self.constraintBottomAttachmentView.cOnstant= 0
            }

            self.view.layoutIfNeeded()
            }, completion: { finished in
                // Update the height of recipient bar.
                self.updateRecipientBarMaxHeight()
        })
    }

iphone x中的键盘高度已增加，因此如果我从键盘高度中减去-34，则白色区域会减小。码：-

if showsKeyboard {
                  self.constraintBottomAttachmentView.cOnstant=  keyBoardRect.size.height - self.view.safeAreaInsets.bottom /*(34)*/ } 

那么，如何在不手动进行优化的情况下解决此问题呢？

您可以通过以下方法获取iPhone X底部空间的高度：

view.safeAreaInsets.bottom

请记住，这仅在iOS 11及更高版本中可用，因此您需要满足以下条件：

if #available(iOS 11.0, *) {
//Move Composebar for iOS 11
} else {
//Move Composebar for other Versions
}

在您的情况下，这看起来类似于：

if showsKeyboard {
      if #available(iOS 11.0, *) {
          self.constraintBottomAttachmentView.cOnstant=  keyBoardRect.size.height - view.safeAreaInsets.bottom
      } else {
          self.constraintBottomAttachmentView.cOnstant=  keyBoardRect.size.height
} else { // Keyboard is going to disappear. Move composebar down.
      self.constraintBottomAttachmentView.cOnstant= 0
}

这对您有用吗？