autovalidateMode property
final
Used to enable/disable form fields auto validation and update their error text.
If AutovalidateMode.onUserInteraction, this FormField will only auto-validate after its content changes. If AutovalidateMode.always, it will auto-validate even without user interaction. If AutovalidateMode.disabled, auto-validation will be disabled.
Defaults to AutovalidateMode.disabled.
Implementation
final AutovalidateMode autovalidateMode;