小部件之间的 Flutter 减少 space

Question

我尝试显示一个 ExpansionTile，其中包含一些文本，后跟一个图像。参考屏幕截图，您可以看到两个小部件之间有一些 space。有人知道我怎样才能减少这个 space 吗？

class Test extends StatelessWidget {
  const Test({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        backgroundColor: backGround,
        appBar: AppBar(
          title: const Text('Aromatics'),
          backgroundColor: appbarColor,
        ),
        body: Column(
          children: [
            ExpansionTile(
                iconColor: titleColor,
                title: const Text('Tst', style: TextStyle(color: titleColor)),
                subtitle: const Text('Test subtitle',
                    style: TextStyle(color: Colors.white)),
                children: [
                  Container(
                    margin: const EdgeInsets.only(left: 20),
                    child: Column(
                      children: const [
                        Text('Test text',
                            style:
                                TextStyle(color: Colors.white, fontSize: 13)),
                      ],
                    ),
                  ),
                ]),
            const SizedBox(
              height: 1,
            ),
            Expanded(
              child: Image.asset('assets/images/test.webp'),
            ),
          ],
        ));
  }
}

Answer 1

根据 ExpansionTile Doc，您可以使用 childrenPadding 来管理子部件的填充

Specifies padding for children. If this property is null then ExpansionTileThemeData.childrenPadding is used. If that is also null then the value of childrenPadding is EdgeInsets.zero.

Answer 2

只需删除图像周围的 Expanded 小部件，因为它占用了图像 Column 中的所有剩余 space。

当前代码：

Column(
    children: [
       ...
       Expanded(
           child: Image.asset('assets/images/test.webp'),
       ),
       ...
    ],
),

新代码：

Column(
    children: [
       ...
       Image.asset('assets/images/test.webp'),
       ...
    ],
),```

Answer 3

移除 Expanded 不符合您的目标吗？

...
const SizedBox(
  height: 1,
),
Image.asset('assets/images/test.webp'),
...

小部件之间的 Flutter 减少 space

Flutter reduce space between widgets

flutter

user-interface

widget

expansion-tile