DataTable

class Dessert {
  Dessert(this.name, this.calories, this.fat, this.carbs, this.protein, this.sodium, this.calcium, this.iron);

  final String name;
  final int calories;
  final double fat;
  final int carbs;
  final double protein;
  final int sodium;
  final int calcium;
  final int iron;
}

final List<Dessert> kDesserts = <Dessert>[
  Dessert('Frozen yogurt',                        159,  6.0,  24,  4.0,  87, 14,  1),
  Dessert('Ice cream sandwich',                   237,  9.0,  37,  4.3, 129,  8,  1),
  Dessert('Eclair',                               262, 16.0,  24,  6.0, 337,  6,  7),
  Dessert('Cupcake',                              305,  3.7,  67,  4.3, 413,  3,  8),
  Dessert('Gingerbread',                          356, 16.0,  49,  3.9, 327,  7, 16),
  Dessert('Jelly bean',                           375,  0.0,  94,  0.0,  50,  0,  0),
  Dessert('Lollipop',                             392,  0.2,  98,  0.0,  38,  0,  2),
  Dessert('Honeycomb',                            408,  3.2,  87,  6.5, 562,  0, 45),
  Dessert('Donut',                                452, 25.0,  51,  4.9, 326,  2, 22),
  Dessert('KitKat',                               518, 26.0,  65,  7.0,  54, 12,  6),
];

//...

final List<String> log = <String>[];

Widget _buildTable({ int sortColumnIndex, bool sortAscending = true }) {
  return DataTable(
    sortColumnIndex: sortColumnIndex,
    sortAscending: sortAscending,
    onSelectAll: (bool value) {
      log.add('select-all: $value');
    },
    columns: <DataColumn>[
      const DataColumn(
        label: Text('Name'),
        tooltip: 'Name',
      ),
      DataColumn(
        label: const Text('Calories'),
        tooltip: 'Calories',
        numeric: true,
        onSort: (int columnIndex, bool ascending) {
          log.add('column-sort: $columnIndex $ascending');
        },
      ),
    ],
    rows: kDesserts.map<DataRow>((Dessert dessert) {
      return DataRow(
        key: Key(dessert.name),
        onSelectChanged: (bool selected) {
          log.add('row-selected: ${dessert.name}');
        },
        cells: <DataCell>[
          DataCell(
            Text(dessert.name),
          ),
          DataCell(
            Text('${dessert.calories}'),
            showEditIcon: true,
            onTap: () {
              log.add('cell-tap: ${dessert.calories}');
            },
          ),
        ],
      );
    }).toList(),
  );
}

@override
Widget build(BuildContext context) {
  return _buildTable(sortColumnIndex: 0, sortAscending: true);
}