**步骤 3: 运行 `flutter pub get`**

在终端中运行 `flutter pub get`，确保 Flutter 能够识别并打包这些资源。

**步骤 4: 在 Flutter 应用中使用资源**

```dart
import 'package:flutter/material.dart';

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('资源管理示例'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            // 使用图片资源
            Image.asset(
              'assets/images/logo.png',
              width: 150,
              height: 150,
            ),
            const SizedBox(height: 20),
            // 使用背景图片
            Container(
              width: 300,
              height: 200,
              decoration: BoxDecoration(
                image: DecorationImage(
                  image: AssetImage('assets/images/background.jpg'),
                  fit: BoxFit.cover,
                ),
              ),
              child: const Center(
                child: Text(
                  '背景图片',
                  style: TextStyle(
                    color: Colors.white,
                    fontSize: 24,
                    fontWeight: FontWeight.bold,
                  ),
                ),
              ),
            ),
            const SizedBox(height: 20),
            // 使用自定义字体
            const Text(
              'Hello, Roboto Font!',
              style: TextStyle(
                fontFamily: 'Roboto',
                fontSize: 30,
                color: Colors.blue,
              ),
            ),
            const SizedBox(height: 10),
            const Text(
              'Hello, OpenSans Bold!',
              style: TextStyle(
                fontFamily: 'OpenSans',
                fontWeight: FontWeight.bold, // 对应 pubspec.yaml 中设置的 weight
                fontSize: 28,
                color: Colors.purple,
              ),
            ),
          ],
        ),
      ),
    );
  }
}

void main() {
  runApp(const MaterialApp(home: AssetsExampleScreen()));
}