Flutter - 水平滚动旁边的固定按钮

Question

我有一个带按钮的对话框，我想在按钮旁边添加一个水平滚动条，所以这样按钮固定在左边，滚动条在右边。我尝试使用 Row 但出现以下错误:

The following assertion was thrown during performResize():Horizontal viewport was given unbounded width....The following assertion was thrown during performLayout():RenderBox was not laid out: RenderViewport#48cb5 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE'package:flutter/src/rendering/box.dart':Failed assertion: line 1982 pos 12: 'hasSize'...

我为此使用的具体代码如下:

      SizedBox(
              height: 80,
              child: Row(
                children: <Widget>[
                  AddUsersButton(newTaskCubit: newTaskCubit),
                  SizedBox(
                    height: 80,
                    child: ListView(
                      scrollDirection: Axis.horizontal,
                      children: <Widget>[
                        UserExample(newTaskCubit: newTaskCubit),
                        UserExample(newTaskCubit: newTaskCubit),
                        UserExample(newTaskCubit: newTaskCubit),
                        UserExample(newTaskCubit: newTaskCubit),
                      ],
                    ),
                  )
                ],
              ),
            ),

Answer 1

也给 SizeBox() width 并在 Listview 中使用 shr​​ikWrap 。因为滚动是 Horizo​​ntal 它需要一个固定的 widht。