ButtonBarTheme constructor Null safety
- {Key? key,
- required ButtonBarThemeData data,
- required Widget child}
Constructs a button bar theme that configures all descendent ButtonBar widgets.
The data must not be null.
Implementation
const ButtonBarTheme({
Key? key,
required this.data,
required Widget child,
}) : assert(data != null), super(key: key, child: child);