Flutter DataTable -如何设置列宽？

DataTable(
  columns: [
    DataColumn(
      label: Text('Column 1'),
      numeric: false, // 设置为false，列宽将平均分配
    ),
    DataColumn(
      label: Text('Column 2'),
      numeric: true, // 设置为true，列宽将根据内容自动调整
    ),
  ],
  rows: [
    DataRow(
      cells: [
        DataCell(Text('Value 1')),
        DataCell(Text('Value 2')),
      ],
    ),
    DataRow(
      cells: [
        DataCell(Text('Value 3')),
        DataCell(Text('Value 4')),
      ],
    ),
  ],
)