当然，下面是如何在Flutter项目中使用super_native_extensions插件的示例代码。这个插件允许你扩展Flutter应用的原生功能，通过调用原生代码（iOS的Swift/Objective-C或Android的Java/Kotlin）来实现特定的功能。

1. 添加依赖

首先，在你的pubspec.yaml文件中添加super_native_extensions依赖：

dependencies:
  flutter:
    sdk: flutter
  super_native_extensions: ^最新版本号 # 替换为实际最新版本号

然后运行flutter pub get来安装依赖。

2. 创建原生功能

iOS (Swift/Objective-C)

在你的iOS项目中，创建一个新的Swift/Objective-C文件，例如NativeFunctionHandler.swift，并实现一个方法：

// NativeFunctionHandler.swift
import UIKit
import Flutter

@objc class NativeFunctionHandler: NSObject, FlutterPlugin {
  public static func register(with registrar: FlutterRegistrar) {
    let channel = FlutterMethodChannel(name: "com.example.super_native_extensions/channel", binaryMessenger: registrar.messenger())
    let instance = NativeFunctionHandler()
    channel.setMethodCallHandler(instance)
  }

  private func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
    switch call.method {
    case "nativeFunction":
      let message = "Hello from native iOS code!"
      result(message)
    default:
      result(FlutterMethodNotImplemented)
    }
  }
}

确保在AppDelegate.swift中注册这个插件：

import UIKit
import Flutter

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GeneratedPluginRegistrant.register(with: self)
    NativeFunctionHandler.register(with: self.registrar(forPlugin: "super_native_extensions")!)
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
}

Android (Java/Kotlin)

在你的Android项目中，创建一个新的Java/Kotlin文件，例如NativeFunctionHandler.java，并实现一个方法：

// NativeFunctionHandler.java
package com.example.yourappname;

import android.content.Context;
import io.flutter.embedding.engine.plugins.FlutterPlugin;
import io.flutter.embedding.engine.plugins.activity.ActivityAware;
import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding;
import io.flutter.plugin.common.MethodCall;
import io.flutter.plugin.common.MethodChannel;
import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
import io.flutter.plugin.common.MethodChannel.Result;

public class NativeFunctionHandler implements FlutterPlugin, MethodCallHandler, ActivityAware {
  private MethodChannel channel;
  private Context applicationContext;

  @Override
  public void onAttachedToEngine(FlutterPluginBinding flutterPluginBinding) {
    channel = new MethodChannel(flutterPluginBinding.getBinaryMessenger(), "com.example.super_native_extensions/channel");
    channel.setMethodCallHandler(this);
    applicationContext = flutterPluginBinding.getApplicationContext();
  }

  @Override
  public void onMethodCall(MethodCall call, Result result) {
    if (call.method.equals("nativeFunction")) {
      String message = "Hello from native Android code!";
      result.success(message);
    } else {
      result.notImplemented();
    }
  }

  @Override
  public void onDetachedFromEngine(FlutterPluginBinding binding) {
    channel.setMethodCallHandler(null);
  }

  @Override
  public void onAttachedToActivity(ActivityPluginBinding binding) {
    // Optional: Add code to handle activity attachment
  }

  @Override
  public void onDetachedFromActivityForConfigChanges(ActivityPluginBinding binding) {
    // Optional: Add code to handle activity detachment for config changes
  }

  @Override
  public void onReattachedToActivityForConfigChanges(ActivityPluginBinding binding) {
    // Optional: Add code to handle activity reattachment for config changes
  }

  @Override
  public void onDetachedFromActivity(ActivityPluginBinding binding) {
    // Optional: Add code to handle activity detachment
  }
}

在MainActivity.kt（或MainActivity.java）中注册这个插件：

// MainActivity.kt
package com.example.yourappname

import io.flutter.embedding.android.FlutterActivity

class MainActivity: FlutterActivity() {
    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
        super.configureFlutterEngine(flutterEngine)
        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, "com.example.super_native_extensions/channel")
            .setMethodCallHandler(NativeFunctionHandler())
    }
}

3. 在Flutter中调用原生功能

现在，你可以在Flutter代码中调用这个原生功能：

import 'package:flutter/material.dart';
import 'package:super_native_extensions/super_native_extensions.dart'; // 假设插件提供了一个这样的导入路径

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Native Function Call'),
        ),
        body: Center(
          child: ElevatedButton(
            onPressed: _callNativeFunction,
            child: Text('Call Native Function'),
          ),
        ),
      ),
    );
  }

  Future<void> _callNativeFunction() async {
    try {
      final String result = await SuperNativeExtensions.invokeMethod('nativeFunction');
      print(result); // 应该打印 "Hello from native iOS/Android code!"
    } catch (e) {
      print('Failed to invoke: ${e.message}');
    }
  }
}

注意：上述代码中的SuperNativeExtensions类是一个假设的类，实际使用时你可能需要根据插件的文档来调整代码。invokeMethod是Flutter中用于调用原生平台通道的方法。

这个示例展示了如何在Flutter中扩展原生功能，并通过插件机制在iOS和Android平台上实现这些功能。根据具体需求，你可以进一步扩展这些原生方法。