autovalidateMode property
Used to enable/disable this form field auto validation and update its 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
/// 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.
final AutovalidateMode? autovalidateMode;