We know that Flutter does not have an ID like in Android for the TextField widget. Flutter allows the user to retrieve the text in mainly two ways: First is the onChanged method, and another is the controller method.
Read moreHow do I get TextField text?
Input is done by calling the getText() .
Read moreHow do you get a form value in flutter?
You can use something like this in the following code: _formKey. currentState. save(); calls the onSaved() on each textFormField items, which assigns the value to all the fields and you can use them as required.
Read more