How can I implement multiple UIPickerView in a single page?

I am implementing UIPickerView in a text field as below:

public func numberOfComponents(in pickerView: UIPickerView) -> Int{
    return 1
}

public func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
    return states.count // states is an array of strings
}

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
    return states[row]
}

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
    textField.text = states[row]
    self.view.endEditing(false)
}

I want to have another textfield that implement UIPickerView. How should I do it? Can I alter the methods implemented above to include both text fields?