你可以试试这个:

import 'package:flutter/material.dart';

class CustomColumn extends Column {
  CustomColumn({
    Key? key,
    MainAxisAlignment mainAxisAlignment = MainAxisAlignment.start,
    MainAxisSize mainAxisSize = MainAxisSize.max,
    CrossAxisAlignment crossAxisAlignment = CrossAxisAlignment.center,
    TextDirection? textDirection,
    VerticalDirection verticalDirection = VerticalDirection.down,
    TextBaseline? textBaseline,
    List children = const [],
    EdgeInsetsGeometry? rowPadding,
  }) : super(
          children: children.map((e) => Padding(padding : rowPadding ?? EdgeInsets.only(bottom:12), child : e)).toList(),
          key: key,
          mainAxisAlignment: mainAxisAlignment,
          mainAxisSize: mainAxisSize,
          crossAxisAlignment: crossAxisAlignment,
          textDirection: textDirection,
          verticalDirection: verticalDirection,
          textBaseline: textBaseline,
        );
}

并调用

CustomColumn(children: [
                    item1,
                    item2,
                    item3,
                  ])

Column(
  children: <Widget>[
    FirstWidget(),
    Spacer(),
    SecondWidget(),
  ]
)

Spacer创建一个可插入到[flexible]小部件的灵活空间。(像一列)

默认情况下没有高度， 您可以将列包装到容器中，并将特定高度添加到容器中。 然后你可以像下面这样使用:

Container(
   width: double.infinity,//Your desire Width
   height: height,//Your desire Height
   child: Column(
      mainAxisAlignment: MainAxisAlignment.spaceBetween,
      children: <Widget>[
         Text('One'),
         Text('Two')
      ],
   ),
),

你可以在这两个小部件之间使用Padding小部件，或者用Padding小部件包装这些小部件。

更新

SizedBox小部件可以在两个小部件之间使用，以增加两个小部件之间的空间，它使代码比填充小部件更具可读性。

Ex:

Column(
  children: <Widget>[
    Widget1(),
    SizedBox(height: 10),
    Widget2(),
  ],
),

您可能必须在列的子列之间使用sizebox()小部件。 希望这对你们有用

这是另一个涉及for循环的选项。

Column(
  children: <Widget>[
    for (var i = 0; i < widgets.length; i++)
      Column(
        children: [
          widgets[i], // The widget you want to create or place goes here.
          SizedBox(height: 10) // Any kind of padding or other widgets you want to put.
        ])
  ],
),