use_decorated_box
Use DecoratedBox.
Details
#DO use DecoratedBox when Container has only a Decoration.
A Container is a heavier Widget than a DecoratedBox, and as bonus,
DecoratedBox has a const constructor.
BAD:
dart
Widget buildArea() {
return Container(
decoration: const BoxDecoration(
color: Colors.blue,
borderRadius: BorderRadius.all(
Radius.circular(5),
),
),
child: const Text('...'),
);
}GOOD:
dart
Widget buildArea() {
return const DecoratedBox(
decoration: BoxDecoration(
color: Colors.blue,
borderRadius: BorderRadius.all(
Radius.circular(5),
),
),
child: Text('...'),
);
}
Enable
#To enable the use_decorated_box rule,
add use_decorated_box under linter > rules in your
analysis_options.yaml file:
analysis_options.yaml
yaml
linter:
rules:
- use_decorated_boxIf you're instead using the YAML map syntax to configure linter rules,
add use_decorated_box: true under linter > rules:
analysis_options.yaml
yaml
linter:
rules:
use_decorated_box: true