鸿蒙JS FA调用PA 原创 精华

public class MainAbility extends AceAbility {
    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
    }

    @Override
    public void onStop() {
        super.onStop();
    }
}
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public class MainAbility extends AceAbility {
    @Override
    public void onStart(Intent intent) {
        setInstanceName("JSShopping");  
        super.onStart(intent);
    }
}
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<div class="container">
    <text class="title">
        {{ $t('strings.hello') }} {{ title }}
    </text>
</div>
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<div class="container">
    <div class="input_content">
        <input type="date" class="input_str" placeholder="{{$t('strings.input_number')}}" onchange="oneNumberChange"></input>
        <text class="text_multiply">*</text>
        <input type="date" class="input_str" placeholder="{{$t('strings.input_number')}}" onchange="secondNumberChange"></input>
    </div>
    <button class="btn" type="text" onclick="calculateCount">{{$t('strings.calculate')}}</button>
</div>
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import prompt from '@system.prompt';

// 定义常量 0-Ability、1-Internal Ability
const ABILITY_TYPE_EXTERNAL = 0;
const ABILITY_TYPE_INTERNAL = 1;
// 接口调用同步或者异步
const ACTION_SYNC = 0;
const ACTION_ASYNC = 1;

// 业务码
const ACTION_MESSAGE_CODE_CALCULATE = 1001;// 计算
const SUCCESS = 0;

export default {
    data: {
        title: "",
        oneNumber: 0,
        secondNumber: 0
    },
    onInit() {
        this.title = this.$t('strings.world');
    },

    oneNumberChange(e) {
        this.oneNumber = e.value;
    },

    secondNumberChange(e) {
        this.secondNumber = e.value;
    },

    // 计算两个数的乘积
    calculateCount: async function(){
        var actionData = {};
        actionData.oneNumber = this.oneNumber;
        actionData.secondNumber = this.secondNumber;
        // 调用PA action信息
        var action = {};

        action.bundleName = 'com.nlscan.example';
        // 在JAVA中创建的PA
        action.abilityName = 'com.nlscan.example.ComputeServiceAbility';
        action.messageCode = ACTION_MESSAGE_CODE_CALCULATE;
        action.data = actionData;
        action.abilityType = ABILITY_TYPE_INTERNAL;
        action.syncOption = ACTION_SYNC;

        // 调用PA
        var resultData = await FeatureAbility.callAbility(action);
        // 解析返回的结果
        var result = JSON.parse(resultData);
        if (result.code == SUCCESS) {
            prompt.showToast({
                message: result.abilityResult,
                duration: 1000
            });
        }
    }

}

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.container {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
}

.input_content {
    width: 100%;
    height: 250px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.text_multiply{
    text-color: black;
    font-size: 30px;
    margin-bottom: 10px;
}

.input_str {
    width: 80%;
    margin-bottom: 25px;
}

.btn {
    text-color: white;
    font-size: 20px;
    font-style: normal;
    background-color: aquamarine;
    width: 50%;
    height: 50px;
}
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import com.nlscan.example.module.RequestData;
import ohos.ace.ability.AceInternalAbility;
import ohos.app.AbilityContext;
import ohos.hiviewdfx.HiLog;
import ohos.hiviewdfx.HiLogLabel;
import ohos.rpc.IRemoteObject;
import ohos.rpc.MessageOption;
import ohos.rpc.MessageParcel;
import ohos.rpc.RemoteException;
import ohos.utils.zson.ZSONObject;

import java.util.HashMap;
import java.util.Map;

public class ComputeServiceAbility extends AceInternalAbility implements AceInternalAbility.AceInternalAbilityHandler {
    private static final HiLogLabel LABEL = new HiLogLabel(HiLog.LOG_APP, 0, "app_tag");
    private static final String BUNDLE_NAME = "com.nlscan.example";
    private static final String ABILITY_NAME = "com.nlscan.example.ComputeServiceAbility";
    // 返回JS的结果码
    private static final int SUCCESS = 0;
    private static final int ERROR = 1;
    // 与JS约定的业务码
    private static final int CALCULATE = 1001;

    private static ComputeServiceAbility mInstance;
    private AbilityContext mContext;
    public ComputeServiceAbility() {
        super(BUNDLE_NAME, ABILITY_NAME);
    }


    public static void register(AbilityContext context){
        mInstance = new ComputeServiceAbility();
        mInstance.mContext = context;
        mInstance.setInternalAbilityHandler(mInstance);
    }

    public static void unregister() {
        if (mInstance == null) {
            return;
        }
        mInstance.mContext = null;
        mInstance.setInternalAbilityHandler(null);
    }


    @Override
    public boolean onRemoteRequest(int code, MessageParcel data, MessageParcel reply, MessageOption messageOption) {
        HiLog.info(LABEL, "code:" + code);
        switch (code) {
            case CALCULATE: {
                // 执行计算
                String dataStr = data.readString();
                HiLog.info(LABEL, "dataStr:" + dataStr);
                RequestData requestData = new RequestData();
                requestData = ZSONObject.stringToClass(dataStr, RequestData.class);
                int count = requestData.getOneNumber() * requestData.getSecondNumber();
                Map<String, Object> result = new HashMap<>();
                result.put("code", SUCCESS);// 返回结果码
                result.put("abilityResult", count);
                // 同步返回
                if (messageOption.getFlags() == MessageOption.TF_SYNC) {
                    reply.writeString(ZSONObject.toZSONString(result));
                } else {
                    // 异步返回
                    MessageParcel responseData = MessageParcel.obtain();
                    responseData.writeString(ZSONObject.toZSONString(result));
                    IRemoteObject remoteObject = reply.readRemoteObject();
                    try {
                        remoteObject.sendRequest(0, responseData, MessageParcel.obtain(), new MessageOption());
                    } catch (RemoteException e) {
                       HiLog.error(LABEL, "error:" +  e.getMessage());
                       return false;
                    } finally {
                        responseData.reclaim();
                    }
                }
                break;
            }

            default:
                Map<String, Object> result = new HashMap<>();
                result.put("code", ERROR);// 返回结果码
                reply.writeString(ZSONObject.toZSONString(result));
                return false;
        }
        return true;
    }
}
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public class RequestData {

    private int oneNumber;
    private int secondNumber;

    public int getOneNumber() {
        return oneNumber;
    }

    public void setOneNumber(int oneNumber) {
        this.oneNumber = oneNumber;
    }

    public int getSecondNumber() {
        return secondNumber;
    }

    public void setSecondNumber(int secondNumber) {
        this.secondNumber = secondNumber;
    }
}
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import ohos.ace.ability.AceAbility;
import ohos.aafwk.content.Intent;

public class MainAbility extends AceAbility {
    @Override
    public void onStart(Intent intent) {
        ComputeServiceAbility.register(this);
        super.onStart(intent);
    }

    @Override
    public void onStop() {
        ComputeServiceAbility.unregister();
        super.onStop();
    }
}
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