UITextView在键盘显示中向左移动

// 监听键盘显示和隐藏的通知
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) {
    // 获取键盘的高度
    guard let keyboardFrame = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect else { return }
    let keyboardHeight = keyboardFrame.height
    
    // 计算UITextView底部与屏幕底部的距离
    let textViewBottom = textView.frame.origin.y + textView.frame.height
    let screenHeight = UIScreen.main.bounds.height
    let bottomDistance = screenHeight - textViewBottom
    
    // 判断键盘是否挡住了UITextView
    if bottomDistance < keyboardHeight {
        // 计算需要移动的距离
        let moveDistance = keyboardHeight - bottomDistance
        
        // 执行向左移动的动画
        UIView.animate(withDuration: 0.25, animations: {
            self.textView.frame.origin.x -= moveDistance
        })
    }
}

@objc func keyboardWillHide(_ notification: Notification) {
    // 还原UITextView的位置
    UIView.animate(withDuration: 0.25, animations: {
        self.textView.frame.origin.x = originalX
    })
}