您可以使用Wrap()小部件代替Column()在子小部件之间添加空格。并使用spacing属性给予子元素之间相等的间距

Wrap(
  spacing: 20, // to apply margin in the main axis of the wrap
  runSpacing: 20, // to apply margin in the cross axis of the wrap
  children: <Widget>[
     Text('child 1'),
     Text('child 2')
  ]
)

Column(children: <Widget>[
   Container(margin: EdgeInsets.only(top:12, child: yourWidget)),
   Container(margin: EdgeInsets.only(top:12, child: yourWidget))
]);

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(),
  ],
),

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.
        ])
  ],
),

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,
                  ])

您可以使用Padding来包装每个子部件，然后设置Padding的顶部或底部。

如果你不想写很多相同的数字，你可以这样写:

Column(
  children: [
    child1, 
    child2, 
    ..., 
    childN
  ].map((e) => Padding(padding: EdgeInsets.only(top: 10), child: e)).toList()
);