如何在下面给出的隐藏键盘功能中包含多个UITextFields？

let textField1 = UITextField()
let textField2 = UITextField()
textField1.delegate = self
textField2.delegate = self

func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    if textField == textField1 {
        textField2.becomeFirstResponder()
    } else if textField == textField2 {
        textField.resignFirstResponder()
    }
    return true
}

let tapGesture = UITapGestureRecognizer(target: self, action: #selector(hideKeyboard))
self.view.addGestureRecognizer(tapGesture)

@objc func hideKeyboard() {
    view.endEditing(true)
}