鸿蒙系统-手机-JS FA（Feature Ability）调用Java PA（Particle Ability）

鸿蒙系统-手机-JS FA（Feature Ability）调用Java PA（Particle Ability）

官方文档：https://developer.harmonyos.com/cn/docs/documentation/doc-guides/ui-js-fa-call-pa-0000001050435961#ZH-CN_TOPIC_0000001063148755__section170911161411

1.编写PA代码

PlayAbility.c

package com.example.phone.ability;

import com.example.phone.param.SUMRequestParam;
import com.example.phone.utils.PlayMusicUtil;
import ohos.aafwk.ability.Ability;
import ohos.aafwk.content.Intent;
import ohos.app.Context;
import ohos.hiviewdfx.HiLog;
import ohos.hiviewdfx.HiLogLabel;
import ohos.rpc.*;
import ohos.utils.zson.ZSONObject;
import java.util.HashMap;
import java.util.Map;

public class PlayAbility extends Ability {
    private static final String TAG = "PlayAbility";
    static final HiLogLabel label = new HiLogLabel(HiLog.LOG_APP, 1, "MY_TAG");
    private static final int ERROR = -1;
    private static final int SUCCESS = 0;
    private static final int PLUS = 1001;
    private PlayRemote remote;

    @Override
    protected void onStart(Intent intent) {
        super.onStart(intent);
    }

    @Override
    protected IRemoteObject onConnect(Intent intent) {
        super.onConnect(intent);
        Context c = getContext();
        remote = new PlayRemote();
        return remote.asObject();
    }

    class PlayRemote extends RemoteObject implements IRemoteBroker {

        public PlayRemote() {
            super("PlayRemote 666");
        }

        @Override
        public boolean onRemoteRequest(int code, MessageParcel data, MessageParcel reply, MessageOption option) throws RemoteException {
            switch (code) {
                case PLUS: {

                    String zsonStr = data.readString();
                    SUMRequestParam param = ZSONObject.stringToClass(zsonStr, SUMRequestParam.class);

                    // 返回结果仅支持可序列化的Object类型
                    Map<String, Object> zsonResult = new HashMap<String, Object>();
                    zsonResult.put("code", SUCCESS);
                    zsonResult.put("abilityResult", param.getFirstNum() + param.getSecondNum());
                    reply.writeString(ZSONObject.toZSONString(zsonResult));
                    break;
                }
                default: {
                    reply.writeString("service not defined");
                    return false;
                }
            }
            return true;
        }

        @Override
        public IRemoteObject asObject() {
            return this;
        }
    }
}

2.编写FA

index.js

// 下面的代码编译器报错不用管
const globalRef = Object.getPrototypeOf(global) || global
globalRef.regeneratorRuntime = require('@babel/runtime/regenerator')

const ABILITY_TYPE_EXTERNAL = 0;
const ACTION_SYNC = 0;
const ACTION_ASYNC = 1;
const ACTION_MESSAGE_CODE_PLUS = 1001;


export const playAbility = {
    sum: async function(that){
        var actionData = {};
        actionData.firstNum = 1024;
        actionData.secondNum = 2048;

        var action = {};
        action.bundleName = 'com.example.phone';
        action.abilityName = 'com.example.phone.ability.PlayAbility';
        action.messageCode = ACTION_MESSAGE_CODE_PLUS;
        action.data = actionData;
        action.abilityType = ABILITY_TYPE_EXTERNAL;
        action.syncOption = ACTION_SYNC;

        var result = await FeatureAbility.callAbility(action);
        var ret = JSON.parse(result);
        if (ret.code == 0) {
            console.info('plus result is:' + JSON.stringify(ret.abilityResult));
            that.title = 'plus result is:' + JSON.stringify(ret.abilityResult);
        } else {
            console.error('plus error code:' + JSON.stringify(ret.code));
        }
    }
}

export default {
    data: {
        title: ""
    },
    onInit() {
        this.title = "我是大喵666";
    },
    play(){
        this.title = "我是大喵计算中";
        playAbility.sum(this);
    }
}

index.hml

<div class="container">
    <div>
        <text class="title">
            {
   
   { $t('strings.hello') }}{
   
   {title}}
        </text>
    </div>
    <div>
        <text class="title" onclick="play">
            计算
        </text>
    </div>
</div>