[harmonyos] [arkui] how can Hongmeng ETS call pa

【 Problem description 】

The document describes js call pa Case study , No, ets call pa Use cases ？ The next step is ets How to call pa

Reference document link

https://developer.harmonyos.com/cn/docs/documentation/doc-references/js-apis-fa-calls-pa-featureability-0000000000617992

【 Solution 】

First step ： newly build pa Of Ability（ Currently named MyServiceAbility）

Links to resources

https://developer.harmonyos.com/cn/docs/documentation/doc-references/js-apis-fa-calls-pa-examples-0000000000618000

The code is as follows

// ohos Related interface package  public class ComputeInternalAbility extends AceInternalAbility {    private static final String BUNDLE_NAME = "com.harmony.alliance.myets";    private static final String ABILITY_NAME = "com.harmony.alliance.myets.ComputeInternalAbility";    private static final int SUCCESS = 0;    private static final int ERROR = 1;    private static final int PLUS = 1001;//  Define log labels private static final HiLogLabel LABEL = new HiLogLabel(HiLog.LOG_APP, 0, "MY_TAG");    private static ComputeInternalAbility instance;    private AbilityContext abilityContext;    //  If more than one Ability The current instance needs to be registered InternalAbility example , The constructor needs to be changed , Set your own bundleName and abilityName    public ComputeInternalAbility() {        super(BUNDLE_NAME, ABILITY_NAME);    }    /**     * Internal ability  Registered interface .     */    public static void register(AbilityContext abilityContext) {        instance = new ComputeInternalAbility();        instance.onRegister(abilityContext);    }     /**     * Internal ability  Logout interface .     */    public static void unregister() {        instance.onUnregister();    }     public boolean onRemoteRequest(int code, MessageParcel data, MessageParcel reply, MessageOption option) {        switch (code) {            case PLUS: {               System.err.println("app log pa obtain ets data "+data.readString());                Map<String, Object> result = new HashMap<String, Object>();                result.put("code", SUCCESS);                result.put("abilityResult", "Pa data");                MessageParcel responseData = MessageParcel.obtain();                responseData.writeString(ZSONObject.toZSONString(result));                IRemoteObject remoteReply = reply.readRemoteObject();                try {                    remoteReply.sendRequest(0, responseData, MessageParcel.obtain(), new MessageOption());                } catch (RemoteException exception) {                    return false;                } finally {                    responseData.reclaim();                }                break;            }            default: {                Map<String, Object> result = new HashMap<String, Object>();                result.put("abilityError", ERROR);                reply.writeString(ZSONObject.toZSONString(result));                return false;            }        }        return true;    }     private void onRegister(AbilityContext abilityContext) {        this.abilityContext = abilityContext;        this.setInternalAbilityHandler((code, data, reply, option) -> {            return this.onRemoteRequest(code, data, reply, option);        });    } private void onUnregister() {        abilityContext = null;        this.setInternalAbilityHandler(null);    }}

The second step see config.json whether abilities Whether to Pa The configuration file

The third step Writing MainAbility Of onStart（） and onStop（） Code The code is as follows

package com.harmony.alliance.myets; import ohos.ace.ability.AceAbility;import ohos.aafwk.content.Intent;import ohos.security.SystemPermission; public class MainAbility extends AceAbility {    @Override    public void onStart(Intent intent) {         ComputeInternalAbility.register(this);        super.onStart(intent);    }@Override   public void onStop() {        ComputeInternalAbility.unregister();        super.onStop();        SampleJSInterface.getInstance().deregister(this);    }}

Step four Writing ets file

@[email protected] MyService {  build() {Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {      Text('ets call pa')        .fontSize(50)        .onClick(function () {          FeatureAbility.callAbility({            bundleName: 'com.harmony.alliance.myets',            abilityName: 'com.harmony.alliance.myets.ComputeInternalAbility',            messageCode: 1001,            abilityType: 1,            data: { firstNum: 1, secondNum: 2 },            syncOption: 0          }).then((data) => {             console.log('pa Pass to ets The data of  ' + data);          })         })        .fontWeight(FontWeight.Bold)    }    .width('100%')    .height('100%')  }}

Running effect ：

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