How to auto fetch OTP, if we use multiple text fields

Question

I know that if we want to auto fetch the OTP(if we use single textfield) we need to use

otpTextField.textContentType = .oneTimeCode

But, If

Answer 1

What I do is similar to @Natarajan's answer, but I use UITextFieldDelegate method. On viewDidAppear your first text field should become first responder and be of type oneTimeCode.

func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {        
    // Fill your textfields here

    return true
}