连接ServiceAbility

import featureAbility from '@ohos.ability.featureAbility';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import promptAction from '@ohos.promptAction';
import rpc from '@ohos.rpc';
import hilog from '@ohos.hilog';

const LOG_TAG: string = '[Sample_FAModelAbilityDevelop]';
const LOG_DOMAIN: number = 0xFF00;
let option: common.ConnectOptions = {
  onConnect: (element, proxy) => {
    hilog.info(LOG_DOMAIN, LOG_TAG, 'onConnectLocalService onConnectDone element:' + JSON.stringify(element));
    if (proxy === null) {
      promptAction.showToast({
        message: 'connect service failed'
      });
      return;
    }
    let data = rpc.MessageParcel.create();
    let reply = rpc.MessageParcel.create();
    let option = new rpc.MessageOption();
    data.writeInterfaceToken('connect.test.token');
    proxy.sendRequest(0, data, reply, option);
    promptAction.showToast({
      message: 'connect service success'
    });
  },
  onDisconnect: (element) => {
    hilog.info(LOG_DOMAIN, LOG_TAG, `onConnectLocalService onDisconnectDone element:${element}`);
    promptAction.showToast({
      message: 'disconnect service success'
    });
  },
  onFailed: (code) => {
    hilog.info(LOG_DOMAIN, LOG_TAG, `onConnectLocalService onFailed errCode:${code}`);
    promptAction.showToast({
      message: 'connect service failed'
    });
  }
};

let request: Want = {
  bundleName: 'com.samples.famodelabilitydevelop',
  abilityName: 'com.samples.famodelabilitydevelop.ServiceAbility',
};
let connId = featureAbility.connectAbility(request, option);
hilog.info(LOG_DOMAIN, LOG_TAG, `connectAbility id:${connId}`);

import type Want from '@ohos.app.ability.Want';
import rpc from '@ohos.rpc';
import hilog from '@ohos.hilog';

const TAG: string = '[Sample_FAModelAbilityDevelop]';
const domain: number = 0xFF00;

class FirstServiceAbilityStub extends rpc.RemoteObject {
  constructor(des: Object) {
    if (typeof des === 'string') {
      super(des);
    } else {
      return;
    }
  }

  onRemoteRequest(code: number, data: rpc.MessageParcel, reply: rpc.MessageParcel, option: rpc.MessageOption): boolean {
    hilog.info(domain, TAG, 'ServiceAbility onRemoteRequest called');
    if (code === 1) {
      let string = data.readString();
      hilog.info(domain, TAG, `ServiceAbility string=${string}`);
      let result = Array.from(string).sort().join('');
      hilog.info(domain, TAG, `ServiceAbility result=${result}`);
      reply.writeString(result);
    } else {
      hilog.info(domain, TAG, 'ServiceAbility unknown request code');
    }
    return true;
  }
}
//...