How do you pass a validator to the TextFormField in Flutter?

Display the current value of the text field.

“how to change the value of a textformfield flutter” Code Answer

Add the Auto-fill hint using constants form AutofillHints class as a list . even if you only have one Hint, you have to add it as a single item in a list. TextFormField after Auto-fill hint added. For a complete list of supported auto-fill hints in flutter refer to this documentation.

Validating TextFormField