onValidateField method

  1. @override
String? onValidateField(
  1. dynamic text
)
override

Validates the input field for the dropdown based on its current state.

Returns the current validation error if any, otherwise returns null.

  • text: The text to validate.

Implementation

@override
String? onValidateField(text) {
  if (validator != null) {
    setValidationError = validator!(selectedValue);
  }
  notifyListeners();
  return super.onValidateField(text);
}