目录

• 说些废话
• 开源代码
• 环境
• 代码
• • 发送端
  • • ability_main.xml
    • config.json
    • MainAbility.java
    • MainAbilitySlice.java
    • MyRemoteProxy.java
  • 接收端
  • • ability_main.xml
    • config.json
    • MainAbility.java
    • MainAbilitySlice.java
    • ServiceAbility.java
    • MyRemoteObject.java
• 测试

说些废话

    官方文档：多端协同开发指导（基于java开发）
    因为多端协同它发送端这边可以启动PA/FA，但是只能停止PA，然后嘞连接操作和断开也都只能适用PA，所以我这个代码最终的展示状态只能靠看日志，且因为我只有一根数据线，所以只能看玩接收端的数据之后，再碰运气看看发送端的日志还能不能出来，如果出不来就只能再操作一遍来看日志。
    然后嘞，我这个设备的情况是，Mate 10 Pro作为发送端，MatePad Pro作为接收端的时候，有一个InterfaceToken的值是可以正常拿到的，但是当MatePad Pro作为发送端，Mate 10 Pro作为接收端的时候，这个InterfaceToken的值就开始出问题了= =找了同行的同学一起测试，也没测个所以然出来。这个问题先保留在这里叭。

开源代码

    MultiterminalSynergy

环境

    HUAWEI MatePad Pro 10.8英寸 2019款 HarmonyOS3.0.0.163（接收端）
    HUAWEI Mate 10 Pro 全网通版 HarmonyOS2.0.0（发送端）
    DevEco Studio 3.0.0.993 Release
    SDK 6（使用java）
    我看的《公共事件开发指导》更新于2022-10-28 18:02

代码

发送端

ability_main.xml

<DirectionalLayout    xmlns:ohos="http://schemas.huawei.com/res/ohos"    ohos:height="match_parent"    ohos:width="match_parent"    ohos:alignment="center"    ohos:orientation="vertical">    <Text ohos:id="$+id:text_register" ohos:height="match_content" ohos:width="match_content" ohos:layout_alignment="horizontal_center" ohos:text="注册流转服务" ohos:text_size="40vp" />    <Text ohos:id="$+id:text_show" ohos:height="match_content" ohos:width="match_content" ohos:layout_alignment="horizontal_center" ohos:text="列出可流转的设备" ohos:scrollable="true" ohos:text_size="40vp" />    <Text ohos:id="$+id:text_startSynergy" ohos:height="match_content" ohos:width="match_content" ohos:layout_alignment="horizontal_center" ohos:text="启动远端程序" ohos:scrollable="true" ohos:text_size="40vp" />    <Text ohos:id="$+id:text_stopSynergy" ohos:height="match_content" ohos:width="match_content" ohos:layout_alignment="horizontal_center" ohos:text="停止远端程序" ohos:scrollable="true" ohos:text_size="40vp" />    <Text ohos:id="$+id:text_connectSynergy" ohos:height="match_content" ohos:width="match_content" ohos:layout_alignment="horizontal_center" ohos:text="连接远端服务" ohos:scrollable="true" ohos:text_size="40vp" />    <Text ohos:id="$+id:text_operateSynergy" ohos:height="match_content" ohos:width="match_content" ohos:layout_alignment="horizontal_center" ohos:text="操作远端服务" ohos:scrollable="true" ohos:text_size="40vp" />    <Text ohos:id="$+id:text_disconnectSynergy" ohos:height="match_content" ohos:width="match_content" ohos:layout_alignment="horizontal_center" ohos:text="断开远端服务" ohos:scrollable="true" ohos:text_size="40vp" /></DirectionalLayout>

config.json

    长度问题只放module部分。

"module": {    "package": "com.openvalley.cyj.synergy",    "name": ".MyApplication",    "mainAbility": "com.openvalley.cyj.synergy.MainAbility",    "deviceType": [      "phone",      "tablet"    ],    "distro": {      "deliveryWithInstall": true,      "moduleName": "entry",      "moduleType": "entry",      "installationFree": false    },    "abilities": [      { "skills": [   {     "entities": ["entity.system.home"     ],     "actions": ["action.system.home"     ]   } ], "name": "com.openvalley.cyj.synergy.MainAbility", "description": "$string:mainability_description", "icon": "$media:icon", "label": "$string:entry_MainAbility", "launchType": "standard", "orientation": "unspecified", "visible": true, "type": "page"      }    ],    "reqPermissions": [      { "name": "ohos.permission.DISTRIBUTED_DATASYNC"      },      { "name": "com.huawei.permission.ACCESS_SERVICE_DM"      }    ]  }

MainAbility.java

package com.openvalley.cyj.synergy;import com.openvalley.cyj.synergy.slice.MainAbilitySlice;import ohos.aafwk.ability.Ability;import ohos.aafwk.ability.IAbilityContinuation;import ohos.aafwk.content.Intent;import ohos.aafwk.content.IntentParams;import ohos.bundle.IBundleManager;import ohos.hiviewdfx.HiLog;import ohos.hiviewdfx.HiLogLabel;import ohos.security.SystemPermission;public class MainAbility extends Ability implements IAbilityContinuation {    private static final HiLogLabel LABEL_LOG = new HiLogLabel(HiLog.LOG_APP, 0x00001, MainAbility.class.getSimpleName());    @Override    public void onStart(Intent intent) { super.onStart(intent); super.setMainRoute(MainAbilitySlice.class.getName()); verifyAndRequestSelfPermission();    }    /     * 在此处验证和请求用户权限     */    private void verifyAndRequestSelfPermission() { try{     //返回值0有，-1没有     if(verifyCallingOrSelfPermission(SystemPermission.DISTRIBUTED_DATASYNC) == IBundleManager.PERMISSION_GRANTED){//     if(verifySelfPermission(SystemPermission.LOCATION) == IBundleManager.PERMISSION_GRANTED){  //如果有权限     }else {  //如果没授权就看这个权限能否动态授权  if(canRequestPermission(SystemPermission.DISTRIBUTED_DATASYNC)){      //如果可以弹窗授权      requestPermissionsFromUser(new String[] {SystemPermission.DISTRIBUTED_DATASYNC}, 0x10001);  }else {      //如果不能动态授权      return ;  }     } }catch (Exception e){     e.printStackTrace(); }    }    /     * 授权的回调     * @param requestCode     * @param permissions     * @param grantResults     */    @Override    public void onRequestPermissionsFromUserResult(int requestCode, String[] permissions, int[] grantResults) { super.onRequestPermissionsFromUserResult(requestCode, permissions, grantResults); if(requestCode == 0x10001){     if(grantResults[0] == IBundleManager.PERMISSION_GRANTED){  //如果授权成功（0）  HiLog.info(LABEL_LOG, permissions[0] + "权限授权成功。");     }else {  //如果没有授权成功（-1）  return ;     } }    }    /     * 准备开始迁移的回调     * @return     */    @Override    public boolean onStartContinuation() { //返回值为true才发起迁移 HiLog.info(LABEL_LOG, "MainAbility onStartContinuation"); return true;    }    /     * 当保存数据（要迁移的数据）的回调     * @param intentParams     * @return     */    @Override    public boolean onSaveData(IntentParams intentParams) { HiLog.info(LABEL_LOG, "MainAbility onSaveData"); return true;    }    /     * 当恢复数据的回调（应该是被迁移的设备调用     * @param intentParams     * @return     */    @Override    public boolean onRestoreData(IntentParams intentParams) { //返回为true代表恢复数据成功 HiLog.info(LABEL_LOG, "MainAbility onRestoreData"); return true;    }    /     * 迁移完成的回调     * @param i     */    @Override    public void onCompleteContinuation(int i) { HiLog.info(LABEL_LOG, " MainAbility onCompleteContinuation");    }    /     * 迁移过程中失败的回调     */    @Override    public void onRemoteTerminated() { IAbilityContinuation.super.onRemoteTerminated(); HiLog.info(LABEL_LOG, "MainAbility onRemoteTerminated");    }    /     * 回迁允许的情况下，远端中断     * @param errorCode     */    @Override    public void onFailedContinuation(int errorCode) { IAbilityContinuation.super.onFailedContinuation(errorCode); HiLog.info(LABEL_LOG, "MainAbility onFailedContinuation");    }}

MainAbilitySlice.java

package com.openvalley.cyj.synergy.slice;import com.openvalley.cyj.synergy.ResourceTable;import com.openvalley.cyj.synergy.pojo.MyRemoteProxy;import ohos.aafwk.ability.AbilitySlice;import ohos.aafwk.ability.IAbilityConnection;import ohos.aafwk.ability.IAbilityContinuation;import ohos.aafwk.ability.continuation.*;import ohos.aafwk.content.Intent;import ohos.aafwk.content.IntentParams;import ohos.aafwk.content.Operation;import ohos.agp.components.Text;import ohos.bundle.ElementName;import ohos.distributedschedule.interwork.DeviceManager;import ohos.distributedschedule.interwork.IInitCallback;import ohos.hiviewdfx.HiLog;import ohos.hiviewdfx.HiLogLabel;import ohos.rpc.IRemoteObject;import ohos.rpc.RemoteException;public class MainAbilitySlice extends AbilitySlice implements IAbilityContinuation {    private static final HiLogLabel LABEL_LOG = new HiLogLabel(HiLog.LOG_APP, 0x00001, MainAbilitySlice.class.getSimpleName());    Text text_register = null;    Text text_show = null;    Text text_startSynergy = null;    Text text_stopSynergy = null;    Text text_connectSynergy = null;    Text text_operateSynergy = null;    Text text_disconnectSynergy = null;    IContinuationRegisterManager continuationRegisterManager = null;    IContinuationDeviceCallback continuationDeviceCallback = null;    RequestCallback requestCallback = null;    IInitCallback initCallback = null;    IAbilityConnection abilityConnection = null;    String jsonParams = null;    int abilityToken = 0;    String deviceId = null;    MyRemoteProxy remoteProxy = null;    @Override    public void onStart(Intent intent) { super.onStart(intent); super.setUIContent(ResourceTable.Layout_ability_main); initContinuationRegisterManager(); initComponent();    }    /     * 初始化注册管理类     */    private void initContinuationRegisterManager(){ continuationRegisterManager = getContinuationRegisterManager(); //设备的回调（是在列出了设备列表后，选择某个设备进行流转连接成功或者断开时调用） continuationDeviceCallback = new IContinuationDeviceCallback() {     @Override     public void onConnected(ContinuationDeviceInfo deviceInfo) {  try {      HiLog.info(LABEL_LOG, "onConnected()");      deviceId = deviceInfo.getDeviceId();      HiLog.info(LABEL_LOG, "onConnected() 连接成功。 deviceId = " + deviceId);      //多端协同需要初始化分布式环境      DeviceManager.initDistributedEnvironment(deviceId, initCallback);      continuationRegisterManager.updateConnectStatus(abilityToken, deviceId, DeviceConnectState.CONNECTED.getState(), requestCallback);  } catch (RemoteException e) {      e.printStackTrace();  }     }     @Override     public void onDeviceConnectDone(String s, String s1) {  HiLog.info(LABEL_LOG, "onDeviceConnectDone()");     }     @Override     public void onDisconnected(String deviceId) {  HiLog.info(LABEL_LOG, "onDisconnected()");     }     @Override     public void onDeviceDisconnectDone(String s) {  HiLog.info(LABEL_LOG, "onDeviceDisconnectDone()");     } }; //请求的回调（注册到服务中心成功） requestCallback = new RequestCallback() {     @Override     public void onResult(int i) {  if(i > 0){      //为了保证更新数据时这个值还在，所以在if里写      abilityToken = i;      HiLog.info(LABEL_LOG, "onResult() 注册成功。 abilityToken = " + abilityToken);  }else {      HiLog.info(LABEL_LOG, "onResult() 其他操作。 abilityToken = " + i);  }     } }; //初始化的回调 initCallback = new IInitCallback() {     @Override     public void onInitSuccess(String s) {  HiLog.info(LABEL_LOG, "onInitSuccess() 初始化分布式环境成功 deviceId = " + s);     }     @Override     public void onInitFailure(String s, int i) {  HiLog.info(LABEL_LOG, "onInitSuccess() 初始化分布式环境成功 deviceId = " + s + " i = " + i);     } }; //服务连接的回调 abilityConnection = new IAbilityConnection() {     @Override     public void onAbilityConnectDone(ElementName elementName, IRemoteObject iRemoteObject, int i) {  HiLog.info(LABEL_LOG, "onAbilityConnectDone() 服务连接成功。");  //初始化本地代理  remoteProxy = new MyRemoteProxy(iRemoteObject);     }     @Override     public void onAbilityDisconnectDone(ElementName elementName, int i) {  HiLog.info(LABEL_LOG, "onAbilityDisconnectDone() 服务断开连接。");     } };    }    /     * 初始化组件     */    private void initComponent(){ text_register = (Text)findComponentById(ResourceTable.Id_text_register); text_register.setClickedListener(listen -> register()); text_show = (Text)findComponentById(ResourceTable.Id_text_show); text_show.setClickedListener(listen -> show()); text_startSynergy = (Text)findComponentById(ResourceTable.Id_text_startSynergy); text_startSynergy.setClickedListener(listen -> startSynergy()); text_stopSynergy = (Text)findComponentById(ResourceTable.Id_text_stopSynergy); text_stopSynergy.setClickedListener(listen -> stopSynergy()); text_connectSynergy = (Text)findComponentById(ResourceTable.Id_text_connectSynergy); text_connectSynergy.setClickedListener(listen -> connectSynergy()); text_operateSynergy = (Text)findComponentById(ResourceTable.Id_text_operateSynergy); text_operateSynergy.setClickedListener(listen -> operateSynergy()); text_disconnectSynergy = (Text)findComponentById(ResourceTable.Id_text_disconnectSynergy); text_disconnectSynergy.setClickedListener(listen -> disconnectSynergy());    }    /     * 点击按钮进行流转服务注册     */    private void register(){ if(continuationRegisterManager != null){     HiLog.info(LABEL_LOG, "register() 开始注册。");     continuationRegisterManager.register(getBundleName(), getExtraParams(), continuationDeviceCallback, requestCallback); }    }    /     * 展示可流转的设备     */    private void show(){ if(continuationRegisterManager != null && abilityToken > 0){     continuationRegisterManager.showDeviceList(abilityToken, getExtraParams(), requestCallback); }    }    /     * 启动远端程序（FA/PA）     */    private void startSynergy(){ Intent startIntent = new Intent(); Operation operation = new Intent.OperationBuilder()  .withDeviceId(deviceId)  .withBundleName("com.chenyijie")//  .withAbilityName("com.chenyijie.MainAbility")  .withAbilityName("com.chenyijie.ServiceAbility")  //开启分布式任务标记  .withFlags(Intent.FLAG_ABILITYSLICE_MULTI_DEVICE)  .build(); startIntent.setOperation(operation); startAbility(startIntent);    }    /     * 停止远端程序（PA）     */    private void stopSynergy(){ //无法停止页面 Intent stopIntent = new Intent(); Operation operation = new Intent.OperationBuilder()  .withDeviceId(deviceId)  .withBundleName("com.chenyijie")  .withAbilityName("com.chenyijie.ServiceAbility")  //开启分布式任务标记  .withFlags(Intent.FLAG_ABILITYSLICE_MULTI_DEVICE)  .build(); stopIntent.setOperation(operation); stopAbility(stopIntent);    }    /     * 连接远端服务（PA）     */    private void connectSynergy(){ Intent connectIntent = new Intent(); Operation operation = new Intent.OperationBuilder()  .withDeviceId(deviceId)  .withBundleName("com.chenyijie")  .withAbilityName("com.chenyijie.ServiceAbility")  //开启分布式任务标记  .withFlags(Intent.FLAG_ABILITYSLICE_MULTI_DEVICE)  .build(); connectIntent.setOperation(operation); boolean connectAbility = connectAbility(connectIntent, abilityConnection); HiLog.info(LABEL_LOG, "connectSynergy() connectAbility = " + connectAbility);    }    /     * 操作远端服务（PA）     */    private void operateSynergy(){ try {     int addResult = remoteProxy.add(1, 2);     HiLog.info(LABEL_LOG, "operateSynergy() addResult = " + addResult); } catch (RemoteException e) {     e.printStackTrace(); }    }    /     * 断开远端服务（PA）     */    private void disconnectSynergy(){ disconnectAbility(abilityConnection);    }    /     * 获得注册时 额外的一些参数     * @return     */    private ExtraParams getExtraParams(){ ExtraParams extraParams = new ExtraParams(); String[] devType = {ExtraParams.DEVICETYPE_SMART_PHONE, ExtraParams.DEVICETYPE_SMART_PAD}; //显示的列表包含那些设备类型 extraParams.setDevType(devType); //添加描述（没出来） extraParams.setDescription("这是一个描述。"); //如果不写，就会默认以注册时的BundleName作为targetBundleName extraParams.setTargetBundleName(getBundleName()); //设备过滤 jsonParams = "\"{" +  "\"filter\":{" +  "\"commonFilter\":{" +  "\"system\":{" +  //目标设备对应的HarmonyOS版本 要≥  "\"harmonyVersion\":\"2.0.0\"" +  "}," +//    "}" +  //1为同账号，1|256为不同账号  "\"groupType\":\"1|256\"," +  //0x00000004需要在同一局域网下，0x00030004不需要在同一局域网下  "\"curComType\": 0x00030004," +  //为空就不做版本兼容性检查，要做版本兼容性检查时，需要传入目标应用包名。  "\"faFilter\":\"{" +  "\"targetBundleName\":\"com.openvalley.cyj.migration\"" +  "}\"" +  "}" +  "}," +  "\"transferScene\":0," +  "\"remoteAuthenticationDescription\": \"拉起HiVision扫描弹框描述\"" +  "}\"";// HiLog.info(LABEL_LOG, jsonParams); extraParams.setJsonParams(jsonParams); return extraParams;    }    @Override    public void onActive() { super.onActive();    }    @Override    public void onForeground(Intent intent) { super.onForeground(intent);    }    @Override    protected void onStop() { if(continuationRegisterManager != null && abilityToken > 0){     continuationRegisterManager.unregister(abilityToken, requestCallback); } //断开流转任务管理服务连接 continuationRegisterManager.disconnect();    }    /     * 准备开始迁移的回调     * @return     */    @Override    public boolean onStartContinuation() { //返回值为true才发起迁移 HiLog.info(LABEL_LOG, "MainAbilitySlice onStartContinuation"); return true;    }    /     * 当保存数据（要迁移的数据）的回调     * @param intentParams     * @return     */    @Override    public boolean onSaveData(IntentParams intentParams) { HiLog.info(LABEL_LOG, "MainAbilitySlice onSaveData"); return true;    }    /     * 当恢复数据的回调（应该是被迁移的设备调用     * @param intentParams     * @return     */    @Override    public boolean onRestoreData(IntentParams intentParams) { //返回为true代表恢复数据成功 HiLog.info(LABEL_LOG, "MainAbilitySlice onRestoreData"); return true;    }    /     * 迁移完成的回调     * @param i     */    @Override    public void onCompleteContinuation(int i) { HiLog.info(LABEL_LOG, "MainAbilitySlice onCompleteContinuation");    }    /     * 迁移过程中失败的回调     */    @Override    public void onRemoteTerminated() { HiLog.info(LABEL_LOG, "MainAbilitySlice onRemoteTerminated");    }    /     * 回迁允许的情况下，远端中断     * @param errorCode     */    @Override    public void onFailedContinuation(int errorCode) { IAbilityContinuation.super.onFailedContinuation(errorCode); HiLog.info(LABEL_LOG, "MainAbilitySlice onFailedContinuation");    }}

MyRemoteProxy.java

package com.openvalley.cyj.synergy.pojo;import ohos.hiviewdfx.HiLog;import ohos.hiviewdfx.HiLogLabel;import ohos.rpc.*;/ * 存根，远程通讯时本地的代理类 */public class MyRemoteProxy implements IRemoteBroker {    private static final HiLogLabel LABEL_LOG = new HiLogLabel(HiLog.LOG_APP, 0x00001, MyRemoteProxy.class.getSimpleName());    public static final int DATACODE = 0x001;    //请求的token    public static final String DATAINTERFACETOKEN = "null";    //响应的token    public static final String REPLYINTERFACETOKEN = "404";    private IRemoteObject remoteObject = null;    public MyRemoteProxy(IRemoteObject iRemoteObject){ this.remoteObject = iRemoteObject;    }    @Override    public IRemoteObject asObject() { return null;    }    /     * 此处定义的方法，此方法将来由远程调用     * @param a     * @param b     * @return     * @throws RemoteException     */    public int add(int a, int b) throws RemoteException { MessageParcel data = MessageParcel.obtain(); MessageParcel reply = MessageParcel.obtain(); MessageOption messageOption = new MessageOption(MessageOption.TF_SYNC); int result = 0; try{     //往请求中写入数据     data.writeInterfaceToken(DATAINTERFACETOKEN);     data.writeInt(a);     data.writeInt(b);     // 请求码 请求 响应 可选性     remoteObject.sendRequest(DATACODE, data, reply, messageOption);     //从响应中获得数据      String interfaceToken = reply.readInterfaceToken();      if(REPLYINTERFACETOKEN.equals(interfaceToken)){   //如果token匹配   result = reply.readInt();      } }finally {     data.reclaim();     reply.reclaim(); }return result;    }}

接收端

ability_main.xml

    长度问题只放module部分。

<DirectionalLayout    xmlns:ohos="http://schemas.huawei.com/res/ohos"    ohos:height="match_parent"    ohos:width="match_parent"    ohos:alignment="center"    ohos:orientation="vertical">    <Text ohos:id="$+id:text_hellWorld" ohos:height="match_content" ohos:width="match_content" ohos:layout_alignment="horizontal_center" ohos:text="$string:mainability_HelloWorld" ohos:text_size="40vp" /></DirectionalLayout>

config.json

"module": {    "package": "com.chenyijie",    "name": ".MyApplication",    "mainAbility": "com.chenyijie.MainAbility",    "deviceType": [      "phone", "tablet"    ],    "distro": {      "deliveryWithInstall": true,      "moduleName": "entry",      "moduleType": "entry",      "installationFree": false    },    "abilities": [      { "skills": [   {     "entities": ["entity.system.home"     ],     "actions": ["action.system.home"     ]   } ], "name": "com.chenyijie.MainAbility", "description": "$string:mainability_description", "icon": "$media:icon", "label": "$string:entry_MainAbility", "launchType": "standard", "orientation": "unspecified", "visible": true, "type": "page"      },      { "name": "com.chenyijie.ServiceAbility", "description": "$string:serviceability_description", "type": "service", "backgroundModes": [], "visible": true, "icon": "$media:icon"      }    ],    "reqPermissions": [      { "name": "ohos.permission.DISTRIBUTED_DATASYNC"      },      { "name": "com.huawei.permission.ACCESS_SERVICE_DM"      }    ]  }

MainAbility.java

package com.chenyijie;import com.chenyijie.slice.MainAbilitySlice;import ohos.aafwk.ability.Ability;import ohos.aafwk.content.Intent;import ohos.bundle.IBundleManager;import ohos.hiviewdfx.HiLog;import ohos.hiviewdfx.HiLogLabel;import ohos.security.SystemPermission;public class MainAbility extends Ability {    private static final HiLogLabel LABEL_LOG = new HiLogLabel(HiLog.LOG_APP, 0x00001, MainAbility.class.getSimpleName());    @Override    public void onStart(Intent intent) { super.onStart(intent); super.setMainRoute(MainAbilitySlice.class.getName()); verifyAndRequestSelfPermission();    }    /     * 在此处验证和请求用户权限     */    private void verifyAndRequestSelfPermission() { try{     //返回值0有，-1没有     if(verifyCallingOrSelfPermission(SystemPermission.DISTRIBUTED_DATASYNC) == IBundleManager.PERMISSION_GRANTED){//     if(verifySelfPermission(SystemPermission.LOCATION) == IBundleManager.PERMISSION_GRANTED){  //如果有权限     }else {  //如果没授权就看这个权限能否动态授权  if(canRequestPermission(SystemPermission.DISTRIBUTED_DATASYNC)){      //如果可以弹窗授权      requestPermissionsFromUser(new String[] {SystemPermission.DISTRIBUTED_DATASYNC}, 0x10001);  }else {      //如果不能动态授权      return ;  }     } }catch (Exception e){     e.printStackTrace(); }    }    /     * 授权的回调     * @param requestCode     * @param permissions     * @param grantResults     */    @Override    public void onRequestPermissionsFromUserResult(int requestCode, String[] permissions, int[] grantResults) { super.onRequestPermissionsFromUserResult(requestCode, permissions, grantResults); if(requestCode == 0x10001){     if(grantResults[0] == IBundleManager.PERMISSION_GRANTED){  //如果授权成功（0）  HiLog.info(LABEL_LOG, permissions[0] + "权限授权成功。");     }else {  //如果没有授权成功（-1）  return ;     } }    }}

MainAbilitySlice.java

package com.chenyijie.slice;import com.chenyijie.ResourceTable;import ohos.aafwk.ability.AbilitySlice;import ohos.aafwk.content.Intent;import ohos.agp.components.Text;public class MainAbilitySlice extends AbilitySlice {    private Text text_hellWorld = null;    @Override    public void onStart(Intent intent) { super.onStart(intent); super.setUIContent(ResourceTable.Layout_ability_main);    }    @Override    public void onActive() { super.onActive();    }    @Override    public void onForeground(Intent intent) { super.onForeground(intent);    }}

ServiceAbility.java

package com.chenyijie;import com.chenyijie.pojo.MyRemoteObject;import ohos.aafwk.ability.Ability;import ohos.aafwk.content.Intent;import ohos.rpc.IRemoteObject;import ohos.hiviewdfx.HiLog;import ohos.hiviewdfx.HiLogLabel;public class ServiceAbility extends Ability {    private static final HiLogLabel LABEL_LOG = new HiLogLabel(HiLog.LOG_APP, 0x00001, ServiceAbility.class.getSimpleName());    MyRemoteObject remoteObject = null;    @Override    public void onStart(Intent intent) { HiLog.info(LABEL_LOG, "ServiceAbility::onStart"); super.onStart(intent); remoteObject = new MyRemoteObject();    }    @Override    public void onBackground() { super.onBackground(); HiLog.info(LABEL_LOG, "ServiceAbility::onBackground");    }    @Override    public void onStop() { super.onStop(); HiLog.info(LABEL_LOG, "ServiceAbility::onStop");    }    @Override    public void onCommand(Intent intent, boolean restart, int startId) { HiLog.info(LABEL_LOG, "ServiceAbility::onCommand");    }    @Override    public IRemoteObject onConnect(Intent intent) { super.onConnect(intent); HiLog.info(LABEL_LOG, "ServiceAbility::onConnect"); return remoteObject.asObject();    }    @Override    public void onDisconnect(Intent intent) { HiLog.info(LABEL_LOG, "ServiceAbility::onDisconnect");    }}

MyRemoteObject.java

package com.chenyijie.pojo;import com.chenyijie.ServiceAbility;import ohos.hiviewdfx.HiLog;import ohos.hiviewdfx.HiLogLabel;import ohos.rpc.*;/ * 骨架 远程代理对象类 */public class MyRemoteObject extends RemoteObject implements IRemoteBroker {    private static final HiLogLabel LABEL_LOG = new HiLogLabel(HiLog.LOG_APP, 0x00001, MyRemoteObject.class.getSimpleName());    public static final int DATACODE = 0x001;    //请求的token    public static final String DATAINTERFACETOKEN = "null";    //响应的token    public static final String REPLYINTERFACETOKEN = "404";    public MyRemoteObject(){ super("description.");    }    @Override    public IRemoteObject asObject() { return this;    }    /     * 这个方法就是远程调用时的方法（响应 答复）     * @param code     * @param data     * @param reply     * @param option     * @return     * @throws RemoteException     */    @Override    public boolean onRemoteRequest(int code, MessageParcel data, MessageParcel reply, MessageOption option) throws RemoteException { int result = 0; if(code == DATACODE){     //如果请求码匹配     HiLog.info(LABEL_LOG, "请求码匹配。");  String interfaceToken = data.readInterfaceToken();  if(DATAINTERFACETOKEN.equals(interfaceToken)){      //如果token匹配      //拿请求中的数据      int a = data.readInt();      int b = data.readInt();      HiLog.info(LABEL_LOG, "a = " + a);      HiLog.info(LABEL_LOG, "b = " + b);      result = a + b;      HiLog.info(LABEL_LOG, "result = " + result);      //给响应加数据      reply.writeInterfaceToken(REPLYINTERFACETOKEN);      reply.writeInt(result);      return true;  }     } return false;    }}

测试