Flutter DataTable 删除额外的填充

Question

我想在 DataTable 中显示一些数据，我有 9 列，除了第一列之外都是数字。

我遇到的问题是，我只看到前 5 列，不是因为数据太长，而是因为每列之间有很多空间。

有没有办法让 DataColumn 用我选择的填充来包装数据？这是我的代码:

Scaffold(
  appBar: AppBar(
    title: Text('DataTable Sample'),
  ),
  body: Container(
    child: DataTable(columns: <DataColumn>[
          DataColumn(
            label: Text('Name'),
          ),
          DataColumn(
            label: Text('A'),
          ),
          DataColumn(
            label: Text('B'),
          ),
          DataColumn(
            label: Text('C'),
          ),
          DataColumn(
            label: Text('D'),
          ),
          DataColumn(
            label: Text('E'),
          ),
          DataColumn(
            label: Text('F'),
          ),
          DataColumn(
            label: Text('G'),
          ),
          DataColumn(
            label: Text('H'),
          ),
        ], rows: <DataRow>[
          DataRow(cells: [
            DataCell(Text('1 Boston')),
            DataCell(Text('3')),
            DataCell(Text('3')),
            DataCell(Text('7')),
            DataCell(Text('1')),
            DataCell(Text('30')),
            DataCell(Text('8')),
            DataCell(Text('+2')),
            DataCell(Text('-22')),
          ]),
          DataRow(cells: [
            DataCell(Text('2 London')),
            DataCell(Text('3')),
            DataCell(Text('4')),
            DataCell(Text('12')),
            DataCell(Text('44')),
            DataCell(Text('7')),
            DataCell(Text('44')),
            DataCell(Text('-98')),
            DataCell(Text('0')),
          ]),
          DataRow(cells: [
            DataCell(Text('3 Rome')),
            DataCell(Text('10')),
            DataCell(Text('50')),
            DataCell(Text('90')),
            DataCell(Text('4')),
            DataCell(Text('7')),
            DataCell(Text('33')),
            DataCell(Text('+5')),
            DataCell(Text('-61')),
          ]),
        ]
        )
  ),
);

Answer 1

您可以使用 SingleChildScrollView 和 FittedBox 作为它的 child 。

Scaffold(
  appBar: AppBar(
    title: Text('DataTable Sample'),
  ),
  body: SingleChildScrollView(
    scrollDirection: Axis.vertical,
    child: FittedBox(
      child: DataTable(
        columns: <DataColumn>[
          DataColumn(
            label: Text('Name'),
          ),
          DataColumn(
            label: Text('A'),
          ),
          DataColumn(
            label: Text('B'),
          ),
          DataColumn(
            label: Text('C'),
          ),
          DataColumn(
            label: Text('D'),
          ),
          DataColumn(
            label: Text('E'),
          ),
          DataColumn(
            label: Text('F'),
          ),
          DataColumn(
            label: Text('G'),
          ),
          DataColumn(
            label: Text('H'),
          ),
        ],
        rows: <DataRow>[
          DataRow(cells: [
            DataCell(Text('1 Boston')),
            DataCell(Text('3')),
            DataCell(Text('3')),
            DataCell(Text('7')),
            DataCell(Text('1')),
            DataCell(Text('30')),
            DataCell(Text('8')),
            DataCell(Text('+2')),
            DataCell(Text('-22')),
          ]),
          DataRow(cells: [
            DataCell(Text('2 London')),
            DataCell(Text('3')),
            DataCell(Text('4')),
            DataCell(Text('12')),
            DataCell(Text('44')),
            DataCell(Text('7')),
            DataCell(Text('44')),
            DataCell(Text('-98')),
            DataCell(Text('0')),
          ]),
          DataRow(cells: [
            DataCell(Text('3 Rome')),
            DataCell(Text('10')),
            DataCell(Text('50')),
            DataCell(Text('90')),
            DataCell(Text('4')),
            DataCell(Text('7')),
            DataCell(Text('33')),
            DataCell(Text('+5')),
            DataCell(Text('-61')),
          ]),
        ],
      ),
    ),
  ),
);