HarmonyOS - 实现多设备协同 原创 精华

**interface** com.wealchen.multipoint.IMultiPointIdl {

  *//启动服务*
  void serviceStart([in] int code);

  *//发送消息*
  void sendMsg([in] int code,[in]int extras);

  *//停止服务*
  int serviceStop();
}
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**public** **class** MultiPointService **extends** Ability {
  *// DESCRIPTOR 保持与 MultiPointIdlStub 和 MultiPointIdlProxy中的一致*
  **private** static final String DESCRIPTOR = "com.wealchen.multipoint.IMultiPointIdl";
  **private** static final String TAG = MultiPointService.class.getName();

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

  @Override
  **protected** IRemoteObject onConnect(Intent intent) {
    **return** **new** MultiPointRemoteObject(DESCRIPTOR);
  }


  **private** **class** MultiPointRemoteObject **extends** MultiPointIdlStub {
    **public** MultiPointRemoteObject(String descriptor) {
      **super**(descriptor);
    }

    @Override
    **public** void serviceStart(int _code) **throws** RemoteException {
      *//启动WebViewAbility页面*
      Intent intent = **new** Intent();
      Operation operation = **new** Intent.OperationBuilder().withBundleName(getBundleName())
          .withAbilityName(WebViewAbility.class.getName()).build();
      intent.setOperation(operation);
      intent.setParam(Constants.INTENT_STAR_PARAM, _code);
      startAbility(intent);
      LogUtil.debug(TAG, "serviceStart : start WebViewAbility " + _code);
    }

    @Override
    **public** void sendMsg(int _code, int _extras) **throws** RemoteException {
      LogUtil.debug(TAG, "sendMsg  code: " + _code + " extras: " + _extras);
    }

    @Override
    **public** int serviceStop() **throws** RemoteException {
      **return** 0;
    }
  }
}
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 *//获取同一网络下的设备*
    List<DeviceInfo> deviceInfos = DeviceManager.getDeviceList(DeviceInfo.FLAG_GET_ONLINE_DEVICE);
    **if** (deviceInfos == **null** && deviceInfos.size() == 0) {
      **return**;
    }
    **for** (int i = 0; i < deviceInfos.size(); i++) {
      String devId = deviceInfos.get(i).getDeviceId();
      String devName = deviceInfos.get(i).getDeviceName();
    }
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 *//启动远端设备的FA*
  **private** void startAbilityFa(String devicesId, String event, int localExtras) {
    Intent intent = **new** Intent();
    Operation operation =
        **new** Intent.OperationBuilder()
            .withDeviceId(devicesId)
            .withBundleName(getBundleName())
            .withAbilityName(MultiPointService.class.getName())
            .withFlags(Intent.FLAG_ABILITYSLICE_MULTI_DEVICE)
            .build();
    intent.setOperation(operation);
    boolean connectFlag = connectAbility(intent, **new** IAbilityConnection() {
      @Override
      **public** void onAbilityConnectDone(ElementName elementName, IRemoteObject remoteObject, int extra) {
        LogUtil.debug(TAG, "onAbilityConnectDone extra:" + extra);
        multiPointIdl = MultiPointIdlStub.asInterface(remoteObject);
        **try** {
          **if** (multiPointIdl != **null**) {
            **switch** (event) {
              **case** "serviceStart":
                multiPointIdl.serviceStart(0);
                **break**;
              **case** "sendMsg":
                multiPointIdl.sendMsg(1001, localExtras);
                **break**;
            }
          }
        } **catch** (RemoteException e) {
          LogUtil.error(TAG, "connect successful,but have remote exception");
        }
      }

      @Override
      **public** void onAbilityDisconnectDone(ElementName elementName, int extra) {
        LogUtil.debug(TAG, "extra " + extra + " elementName " + elementName.getAbilityName());
        disconnectAbility(**this**);
      }
    });
    **if** (connectFlag) {
      Toast.toast(**this**, "transmit successful!", TOAST_DURATION);
    } **else** {
      Toast.toast(**this**, "transmit failed!Please try again later.", TOAST_DURATION);
    }
  }
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**public** **class** MyKvStoreManager {
  **private** static final String TAG = MyKvStoreManager.class.getName();
  **private** static MyKvStoreManager instance = **null**;
  **private** static SingleKvStore singleKvStore = **null**;
  **private** static KvManager kvManager;

  **private** MyKvStoreManager(Context context) {
    createKVManager(context);
  }
  */**
  ** 创建分布式数据管理器*
  ** \*/*
  **public** static void createKVManager(Context context) {
    KvManagerConfig config = **new** KvManagerConfig(context);
    kvManager = KvManagerFactory.getInstance().createKvManager(config);
    **try** {
      Options options = **new** Options();
      options.setCreateIfMissing(**true**)
          .setAutoSync(**false**)
          .setEncrypt(**false**)
          .setKvStoreType(KvStoreType.SINGLE_VERSION);
      String storeId = "remoteData";
      singleKvStore = kvManager.getKvStore(options, storeId);
    } **catch** (KvStoreException e) {
      LogUtil.error(TAG, "getKvStore:" + e.getKvStoreErrorCode());
    }
  }

  */**
  ** 存储数据*
  ** \*/*
  **public** static void putKvStore(String key, String value) {
    **if** (singleKvStore == **null**) {
      **return**;
    }
    **try** {
      singleKvStore.putString(key, value);
    } **catch** (KvStoreException e) {
      LogUtil.debug(TAG, "putString:" + e.getKvStoreErrorCode());
    }
  }

  */**
  ** 查询数据*
  ** \*/*
  **public** static String getKvStore(String key) {
    String valueString = "";
    **try** {
      valueString = singleKvStore.getString(key);
    } **catch** (KvStoreException e) {
      LogUtil.debug(TAG, "getString:" + e.getKvStoreErrorCode());
    }
    **return** valueString;
  }

  */**
  ** 手动同步数据*
  ** \*/*
  **public** static void syncData() {
    List<DeviceInfo> deviceInfoList = kvManager.getConnectedDevicesInfo(DeviceFilterStrategy.NO_FILTER);
    List<String> deviceIdList = **new** ArrayList<>();
    **for** (DeviceInfo deviceInfo : deviceInfoList) {
      deviceIdList.add(deviceInfo.getId());
      LogUtil.debug(TAG,"syncData getId: "+deviceInfo.getId());
    }
    **if** (deviceIdList.isEmpty()){
      **return**;
    }
    singleKvStore.sync(deviceIdList, SyncMode.PUSH_PULL);
  }
   */**
  ** 订阅数据同步结果*
  ** \*/*
  **public** static void dataChangeObserver(KvStoreObserver storeObserver) {
    singleKvStore.subscribe(SubscribeType.SUBSCRIBE_TYPE_REMOTE, storeObserver);
  }
}
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MyKvStoreManager.dataChangeObserver(**new** KvStoreObserver() {
  @Override
  **public** void onChange(ChangeNotification changeNotification) {
    LogUtil.debug(TAG, "dataChangeObserver");
    List<Entry> updateEntries = changeNotification.getUpdateEntries();
    **for** (int i = 0; i < updateEntries.size(); i++) {
      String key = updateEntries.get(i).getKey();
      String value = updateEntries.get(i).getValue().getString();
      LogUtil.debug(TAG, "dataChangeObserver key:" + key + " value:" + value);
      getMainTaskDispatcher().asyncDispatch(**new** Runnable() {
        @Override
        **public** void run() {
          **switch** (key) {
            **case** JS_ADD_NAME:
              *//添加名字*
              setJsAddName(value);
              **break**;
            **case** JS_DEL_NAME:
              *//删除名字*
              setJsDelName(value);
              **break**;
            **default**:
              updateListView(key, value);
              **break**;
          }
        }
      });

    }
  }
});
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 **private** void setJsAddName(String addName) {
    LogUtil.debug(TAG, "addName:" + addName);
    String add_js = String.format("javascript:addName('%s')", addName);
    webView.executeJs(add_js, **new** AsyncCallback<String>() {
      @Override
      **public** void onReceive(String msg) {
        *// 在此确认返回结果*
        LogUtil.debug(TAG, "executeJs onReceive:" + msg);
      }
    });
  }

H5页面定义的方法：

**function** addName(name){
    **var** tpl = document.getElementById('name').innerText
    **var** str = name +'\n'
    document.getElementById('name').innerText = tpl.concat(str)
    **return** name
}
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**function** callToApp() {
  **if** (window.showDeviceList && window.showDeviceList.call) {
    **var** result = showDeviceList.call("showDeviceList");
  }
}

应用中定义的方法：

webView.addJsCallback("showDeviceList", **new** JsCallback() {
  @Override
  **public** String onCallback(String s) {
    getMainTaskDispatcher().asyncDispatch(**new** Runnable() {
      @Override
      **public** void run() {
        **switch** (s) {
          **case** "showDeviceList":
            **if** (!bottomDialog.isShowing()) {
              bottomDialog.show();
            }
            **break**;
        }
      }
    });
    **return** method;
  }
});
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