FLutter--鸿蒙ohos ArkTS 通信 MethodChannel

鸿蒙小白，搞这个通信都搞了一天，最后没想到这么简单，记录一下

• 代码位置看图
• 之前一直想着在index.ets文件中实现，代码改来改去，一直都收不到消息，最后发现自己创建 FlutterEngine 实例是不行的，需要通过获取拿到这个实例
• 最后查到需要从FlutterAbility中通过框架来管理 Flutter 引擎的创建和销毁，FlutterEngine 也可以直接获取到
• 修改代码位置后就可以了

import { FlutterAbility, FlutterEngine, MethodCall, MethodChannel, MethodResult } from '@ohos/flutter_ohos';
import { GeneratedPluginRegistrant } from '../plugins/GeneratedPluginRegistrant';

export default class EntryAbility extends FlutterAbility {

  private channel: MethodChannel | null = null;

  configureFlutterEngine(flutterEngine: FlutterEngine) {
    super.configureFlutterEngine(flutterEngine)
    GeneratedPluginRegistrant.registerWith(flutterEngine)

    console.info('🐯 调用 FLutter--ohos 通信方法');
    this.channel = new MethodChannel(flutterEngine.dartExecutor.getBinaryMessenger(), 'com.ccc.get');
    this.channel!.setMethodCallHandler({
  onMethodCall: async (call: MethodCall, result: MethodResult) => {
    console.info(`🐯 收到消息: ${call.method}`);
    switch (call.method) {
      case 'init':
        result.success('success');
        break;
      case 'getOnePhone':
        let args:Map<string,Any> = call.args;
        let data:string = args.get('data');
        console.info(`🐯 DB ${data} `);
        let msg: Map<string, Any> = JsonStringToMap(data);
        if (!msg.has('token')) {
          msg.set('token','');
        }
        if (!msg.has('openid')) {
          msg.set('openid','');
        }
        if (!msg.has('nickName')) {
          msg.set('nickName','');
        }
        if (!msg.has('headImage')) {
          msg.set('headImage','');
        }
        let jsonStr = MapToJsonString(msg);
        console.info(`🐯 DB ${jsonStr} `);
        this.channel?.invokeMethod('jumpLoginMobile',jsonStr);
        result.success('success');
        break;
      default:
        result.notImplemented();
        break;
    }
  }
});

  }
}

补充下flutter的代码

// 使用
IPlatform.get().init();
String xx = await IPlatform.get().getOnePhone();
//
//
//

class IPlatform {
  //构造方法
  IPlatform();

  // 单例方法
  static IPlatform? instance;

  static IPlatform get() {
    if (instance == null) {
      instance = IPlatform();
    }
    return instance!;
  }

  static const platform = MethodChannel('com.ccc.get');
  // 初始化单例
  Future init() async {
    try {
      platform.setMethodCallHandler(flutterMethod);
      final value = await platform.invokeMethod('init');
      Logs.e('value = ${value}');
    } catch (e) {}
  }
  
  // 调用原生方法
  Future<String> getOnePhone() async {
    try {
      Map<String, dynamic> map = {};
      return await platform.invokeMethod('getOnePhone', map);
    } catch (e) {
      return '';
    }
  }
  
  // 接收原生调用
  Future<dynamic> flutterMethod(MethodCall call) async {
    Logs.e('call.method = ${call.method}');
    switch (call.method) {
      case 'onEvent':
        var data = call.arguments;
        break;
      case 'jumpLoginMobile':
        var data = call.arguments;
        break;
    }
  }
}