鸿蒙应用集成Flutter框架的ArkTS实践原创

kongerjun

发布于 2025-6-26 11:27

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技术选型背景

作为鸿蒙开发者，我们在需要快速实现跨平台UI时选择了Flutter框架。ArkTS作为鸿蒙主推的开发语言，与Flutter的结合需要解决类型系统、线程模型和UI渲染等多方面问题。本文将分享使用ArkTS集成Flutter的实际经验。

核心集成方案

以下是使用ArkTS在鸿蒙应用中嵌入Flutter的核心代码实现：

// 在EntryAbility.ts中集成FlutterView
import flutter from '@ohos.flutter';
import window from '@ohos.window';

@Entry
@Component
struct MainPage {
  private flutterController: flutter.FlutterViewController | null = null;

  aboutToAppear() {
    // 初始化Flutter引擎
    let options: flutter.FlutterEngineOptions = {
      dartEntryPoint: 'main',
      dartLibraryUri: 'package:flutter_app/main.dart'
    };
    
    flutter.createFlutterEngine(this.context, options).then(controller => {
      this.flutterController = controller;
      
      // 创建MethodChannel通信
      const channel = new flutter.MethodChannel(controller, 'com.example.channel');
      channel.setMethodCallHandler((call: flutter.MethodCall) => {
        if (call.method === 'getHarmonyInfo') {
          return new Promise((resolve) => {
            resolve(JSON.stringify({
              osVersion: 'HarmonyOS 4.0',
              deviceId: '123456'
            }));
          });
        }
        return Promise.reject('Method not implemented');
      });
    });
  }

  build() {
    Column() {
      // 嵌入Flutter视图
      FlutterComponent({
        controller: this.flutterController,
        width: '100%',
        height: '100%'
      })
    }
  }
}

关键问题解决

线程通信优化：

// 在Flutter侧调用鸿蒙能力
import 'package:flutter/services.dart';

const _channel = MethodChannel('com.example.channel');

Future<void> getDeviceInfo() async {
  try {
    String result = await _channel.invokeMethod('getHarmonyInfo');
    debugPrint(result);
  } catch (e) {
    debugPrint('Error: $e');
  }
}

性能监控方案：

// 在ArkTS侧监控Flutter性能
this.flutterController?.setPerformanceMonitorListener({
  onFpsUpdate: (fps: number) => {
    Logger.info(`Flutter FPS: ${fps}`);
  },
  onMemoryUpdate: (usage: number) => {
    Logger.info(`Memory usage: ${usage}MB`);
  }
});

最佳实践建议

1、混合导航方案：

// 实现Flutter与ArkTS页面跳转
navigateToFlutterRoute(routeName: string) {
  this.flutterController?.pushRoute(routeName);
}

// Flutter侧接收路由指令
WidgetsBinding.instance!.addObserver(
  LifecycleObserver(
    didPushRoute: (route) {
      // 处理路由跳转
    }
  )
);

2、状态共享方案：

// 使用HarmonyOS的分布式数据管理
import distributedData from '@ohos.data.distributedData';

const kvManager = distributedData.createKVManager({
  context: this.context,
  bundleName: 'com.example.app'
});

const options: distributedData.Options = {
  kvStoreType: distributedData.KVStoreType.SINGLE_VERSION
};

kvManager.getKVStore('flutter_state', options).then((store) => {
  // 共享状态到Flutter
  store.put('userToken', 'abc123');
});