Flutter框架跨平台鸿蒙开发——Button组件基础

一、Button组件概述

Flutter提供了多种按钮组件，满足不同场景的需求。

Button类型

Button组件
ElevatedButton
TextButton
OutlinedButton
IconButton
FloatingActionButton

二、ElevatedButton

基础用法

dart 复制代码

ElevatedButton(
  onPressed: () {},
  child: Text('点击'),
)

带图标的按钮

dart 复制代码

ElevatedButton.icon(
  icon: Icon(Icons.add),
  label: Text('添加'),
  onPressed: () {},
)

三、TextButton

基础用法

dart 复制代码

TextButton(
  onPressed: () {},
  child: Text('文本按钮'),
)

四、OutlinedButton

基础用法

dart 复制代码

OutlinedButton(
  onPressed: () {},
  child: Text('轮廓按钮'),
)

五、完整示例

dart 复制代码

class ButtonBasicsExample extends StatelessWidget {
  const ButtonBasicsExample({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Button基础')),
      body: ListView(
        padding: EdgeInsets.all(16),
        children: [
          Card(
            child: Padding(
              padding: EdgeInsets.all(16),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text('ElevatedButton'),
                  SizedBox(height: 16),
                  Row(
                    children: [
                      ElevatedButton(
                        onPressed: () {},
                        child: Text('普通'),
                      ),
                      SizedBox(width: 16),
                      ElevatedButton.icon(
                        icon: Icon(Icons.add),
                        label: Text('带图标'),
                        onPressed: () {},
                      ),
                    ],
                  ),
                ],
              ),
            ),
          ),
          SizedBox(height: 16),
          Card(
            child: Padding(
              padding: EdgeInsets.all(16),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text('TextButton'),
                  SizedBox(height: 16),
                  TextButton(
                    onPressed: () {},
                    child: Text('文本按钮'),
                  ),
                ],
              ),
            ),
          ),
          SizedBox(height: 16),
          Card(
            child: Padding(
              padding: EdgeInsets.all(16),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text('OutlinedButton'),
                  SizedBox(height: 16),
                  OutlinedButton(
                    onPressed: () {},
                    child: Text('轮廓按钮'),
                  ),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }
}

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