layout - Flutter 中的基本对齐文本和虚线

Question

我正在尝试为我的 Flutter 应用创建这样的东西:

现在我已经成功地得到了一行文字，一条虚线和更大的文字，物有所值。我似乎无法解决的最后一个问题是消除不同大小文本中的可变大小差距。

[编辑] 我的意思是让所有内容都对齐在同一条红线上:

查看this answer我想我可以做同样的事情并将所有文本放在定位的堆栈中。然而，这破坏了我的布局，给我这个错误:

I/flutter (26439): The following assertion was thrown during performLayout():
I/flutter (26439): RenderFlex children have non-zero flex but incoming height constraints are unbounded.
I/flutter (26439): When a column is in a parent that does not provide a finite height constraint, for example if it is
I/flutter (26439): in a vertical scrollable, it will try to shrink-wrap its children along the vertical axis. Setting a
I/flutter (26439): flex on a child (e.g. using Expanded) indicates that the child is to expand to fill the remaining
I/flutter (26439): space in the vertical direction.
I/flutter (26439): These two directives are mutually exclusive. If a parent is to shrink-wrap its child, the child
I/flutter (26439): cannot simultaneously expand to fit its parent.
I/flutter (26439): Consider setting mainAxisSize to MainAxisSize.min and using FlexFit.loose fits for the flexible
I/flutter (26439): children (using Flexible rather than Expanded). This will allow the flexible children to size
I/flutter (26439): themselves to less than the infinite remaining space they would otherwise be forced to take, and
I/flutter (26439): then will cause the RenderFlex to shrink-wrap the children rather than expanding to fit the maximum
I/flutter (26439): constraints provided by the parent.
I/flutter (26439): The affected RenderFlex is:
I/flutter (26439):   RenderFlex#c7fb1 relayoutBoundary=up8 NEEDS-LAYOUT NEEDS-PAINT
I/flutter (26439): The creator information is set to:
I/flutter (26439):   Column ← Expanded ← Row ← Column ← Padding ← RepaintBoundary-[<0>] ← IndexedSemantics ←
I/flutter (26439):   NotificationListener<KeepAliveNotification> ← KeepAlive ← AutomaticKeepAlive ← SliverList ←
I/flutter (26439):   MediaQuery ← ⋯
I/flutter (26439): See also: https://flutter.dev/layout/

这是我的相关代码:

Row(
  crossAxisAlignment: CrossAxisAlignment.end,
  children: <Widget>[
    Text('Salary Cap'),
    // Stack( // Will cause error
    //   fit: StackFit.expand,
    //   children: <Widget>[
    //     Positioned(
    //       top: 0,
    //       left: 0,
    //       width: 200,
    //       child: Text('Salary Cap'),
    //     ),
    //   ],
    // ),
    Expanded(
      child: Container(
        width: double.infinity,
        child: CustomPaint(painter: LineDashedPainter()),
      ),
    ),
    RichText(
      text: TextSpan(
        children: <TextSpan>[
          TextSpan(text: '\$'),
          TextSpan(
            text:
                '${oCcy.format(salaryLimit)}',
            style: Theme.of(context).textTheme.display1,
          ),
        ],
      ),
    ),
  ],
),

有什么建议吗？

Answer 1

你可以使用这两行

crossAxisAlignment: CrossAxisAlignment.baseline,
textBaseline: TextBaseline.ideographic,