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July 6, 2024 03:28
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Column Builder for Flutter. Can be used instead of a ListView with shrinkWrap.
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class ColumnBuilder extends StatelessWidget { | |
final IndexedWidgetBuilder itemBuilder; | |
final MainAxisAlignment mainAxisAlignment; | |
final MainAxisSize mainAxisSize; | |
final CrossAxisAlignment crossAxisAlignment; | |
final TextDirection textDirection; | |
final VerticalDirection verticalDirection; | |
final int itemCount; | |
const ColumnBuilder({ | |
Key key, | |
@required this.itemBuilder, | |
@required this.itemCount, | |
this.mainAxisAlignment: MainAxisAlignment.start, | |
this.mainAxisSize: MainAxisSize.max, | |
this.crossAxisAlignment: CrossAxisAlignment.center, | |
this.textDirection, | |
this.verticalDirection: VerticalDirection.down, | |
}) : super(key: key); | |
@override | |
Widget build(BuildContext context) { | |
return new Column( | |
children: new List.generate(this.itemCount, | |
(index) => this.itemBuilder(context, index)).toList(), | |
); | |
} | |
} |
The options are not passed on above codes.
Added passing arguments.
class ColumnBuilder extends StatelessWidget {
final IndexedWidgetBuilder itemBuilder;
final MainAxisAlignment mainAxisAlignment;
final MainAxisSize mainAxisSize;
final CrossAxisAlignment crossAxisAlignment;
final TextDirection? textDirection;
final VerticalDirection verticalDirection;
final int itemCount;
const ColumnBuilder({
Key? key,
required this.itemBuilder,
required this.itemCount,
this.mainAxisAlignment = MainAxisAlignment.start,
this.mainAxisSize = MainAxisSize.max,
this.crossAxisAlignment = CrossAxisAlignment.center,
this.textDirection,
this.verticalDirection = VerticalDirection.down,
}) : super(key: key);
@override
Widget build(BuildContext context) {
return Column(
mainAxisSize: mainAxisSize,
mainAxisAlignment: mainAxisAlignment,
crossAxisAlignment: crossAxisAlignment,
textDirection: textDirection,
verticalDirection: verticalDirection,
children: List.generate(itemCount, (index) => itemBuilder(context, index))
.toList(),
);
}
}
class RowBuilder extends StatelessWidget {
final IndexedWidgetBuilder itemBuilder;
final MainAxisAlignment mainAxisAlignment;
final MainAxisSize mainAxisSize;
final CrossAxisAlignment crossAxisAlignment;
final TextDirection? textDirection;
final VerticalDirection verticalDirection;
final int itemCount;
const RowBuilder({
Key? key,
required this.itemBuilder,
required this.itemCount,
this.mainAxisAlignment = MainAxisAlignment.start,
this.mainAxisSize = MainAxisSize.max,
this.crossAxisAlignment = CrossAxisAlignment.center,
this.textDirection,
this.verticalDirection = VerticalDirection.down,
}) : super(key: key);
@override
Widget build(BuildContext context) {
return Row(
mainAxisSize: mainAxisSize,
mainAxisAlignment: mainAxisAlignment,
crossAxisAlignment: crossAxisAlignment,
textDirection: textDirection,
verticalDirection: verticalDirection,
children: List.generate(itemCount, (index) => itemBuilder(context, index))
.toList(),
);
}
}
Works great, thanks for the code!
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Null safety column builder;