showDefaultAction property
Show a SnackBar action button with CLEAR as it's text that can be used to hide the SnackBar.
If true
, default SnackBar action button will be shown only if
the action of the SnackBar is null.
If false
, this action button will not be shown.
Color of the button is getting from SnackBarThemeData.
Implementation
final bool showDefaultAction;