Question

我有一个简单的布局，该布局由一列带有几个子元素的列组成。其中一些是包含孩子的行。我在列的子级之间添加了分隔线，在行的子级之间添加了垂直分隔线。（水平）分频器显示正常。但是，垂直分割器未显示在应用程序中。

我已经尝试将Rows子级包装在其他类似容器的布局小部件中，但是似乎没有任何作用。

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Test App'),
      ),
      body: Column(
        children: <Widget>[
          Expanded(
            child: Center(
              child: Text('Hello World'),
            ),
          ),
          Divider(height: 1),
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            children: <Widget>[
              Padding(
                padding: const EdgeInsets.all(40.0),
                child: Text('Row 1.1'),
              ),
              VerticalDivider(width: 1),
              Padding(
                padding: const EdgeInsets.all(40.0),
                child: Text('Row 1.2'),
              ),
            ],
          ),
          Divider(height: 1),
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            children: <Widget>[
              Padding(
                padding: const EdgeInsets.all(40.0),
                child: Text('Row 2.1'),
              ),
              VerticalDivider(width: 1),
              Padding(
                padding: const EdgeInsets.all(40.0),
                child: Text('Row 2.2'),
              ),
            ],
          )
        ],
      ),
    );
  }
}

Answer 1

尝试一下：

Container(
    height: 20,
    child: VerticalDivider(
       width: 20
       color: Colors.black,
    ),
),

对我有用。

Answer 2

只需用IntrinsicHeight小部件包装行

您的示例如下

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Test App'),
      ),
      body: Column(
        children: <Widget>[
          Expanded(
            child: Center(
              child: Text('Hello World'),
            ),
          ),
          Divider(height: 1),
          IntrinsicHeight(
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
              children: <Widget>[
                Padding(
                  padding: const EdgeInsets.all(40.0),
                  child: Text('Row 1.1'),
                ),
                VerticalDivider(width: 1),
                Padding(
                  padding: const EdgeInsets.all(40.0),
                  child: Text('Row 1.2'),
                ),
              ],
            ),
          ),
          Divider(height: 1),
          IntrinsicHeight(
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
              children: <Widget>[
                Padding(
                  padding: const EdgeInsets.all(40.0),
                  child: Text('Row 2.1'),
                ),
                VerticalDivider(width: 1),
                Padding(
                  padding: const EdgeInsets.all(40.0),
                  child: Text('Row 2.2'),
                ),
              ],
            ),
          )
        ],
      ),
    );
  }
}

颤振布局：未显示垂直分隔线

2 个答案: