Swift 3- iOS 10 - UITextField -如何自动隐藏键盘和自动上移文本字段

func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    textField.resignFirstResponder()
    return true
}

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 contentInsets = UIEdgeInsets(top: 0, left: 0, bottom: keyboardSize.height, right: 0)
        // 根据实际情况调整文本字段的位置，例如将文本字段的底部与键盘的顶部对齐
        // textField.frame.origin.y = keyboardSize.origin.y - textField.frame.size.height
        // 或者使用Auto Layout来调整文本字段的位置
        // textFieldBottomConstraint.constant = keyboardSize.height
        // UIView.animate(withDuration: 0.3) {
        //     self.view.layoutIfNeeded()
        // }
    }
}

@objc func keyboardWillHide(_ notification: Notification) {
    // 恢复文本字段的位置，使其回到原始位置
    // textField.frame.origin.y = originalY
    // 或者使用Auto Layout来恢复文本字段的位置
    // textFieldBottomConstraint.constant = originalConstant
    // UIView.animate(withDuration: 0.3) {
    //     self.view.layoutIfNeeded()
    // }
}