HarmonyOS分布式应用农业大棚数据监测解读

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引言

分布式数据服务(Distributed Data Service，DDS) 为应用程序提供不同设备间数据库数据分布式的能力。通过调用分布式数据接口，应用程序将数据保存到分布式数据库中。通过结合帐号、应用和数据库三元组，分布式数据服务对属于不同应用的数据进行隔离，保证不同应用之间的数据不能通过分布式数据服务互相访问。在通过可信认证的设备间，分布式数据服务支持应用数据相互同步，为用户提供在多种终端设备上最终一致的数据访问体验。

功能介绍

此次基于HarmonyOS的分布式数据服务能力，一方面模拟农业大棚的温度、湿度、二氧化碳浓度等数据的采集，并在手机端进行采集数据展示;另一方面，可以把手机端的数据，迁移到其他设备(如智慧屏、手表、PAD等)，可以做一些数据分析展示。

前提：

在不同设备之间，要实现分布式数据服务的同步能力，需要同一个华为账号登录、并一个应用包名、同一个网络之间进行，也可以是两个设备同时开启蓝牙。

开发指南 1.在config.json中添加permisssion权限

// 添加在abilities同一目录层级

"reqPermissions": [     { 
        "name": "ohos.permission.DISTRIBUTED_DATASYNC"     } 
] 

2.在MainAbility中添加权限

@Override public void onStart(Intent intent) { 
  super.onStart(intent);   super.setMainRoute(MainAbilitySlice.class.getName()); 
  //实现Ability的代码中显式声明需要使用多设备协同访问的权限   requestPermissionsFromUser(new String[]{ 
      "ohos.permission.DISTRIBUTED_DATASYNC"}, 0);  
} 

3.根据配置构造分布式数据库管理类实例KvManager以及创建分布式数据库对象SingleKvStore

//实现数据库的初始化

// 初入的参数context: Context context = getApplicationContext()获得；storeId为分布式数据库id,String类型，可自行定义，例如“testApp”。 public static SingleKvStore initOrGetDB(Context context, String storeId) { 
  KvManagerConfig kvManagerConfig = new KvManagerConfig(context);   kvManager = KvManagerFactory.getInstance().createKvManager(kvManagerConfig); 
  Options options = new Options();   options.setCreateIfMissing(true) 
    .setEncrypt(false)     .setKvStoreType(KvStoreType.SINGLE_VERSION) //数据库类型：单版本分布式数据库 
    .setAutoSync(true); //自动同步为true,手动同步为false   singleKvStore = kvManager.getKvStore(options, storeId); 
  return singleKvStore; } 

4.将数据写入单版本分布式数据库

//以key-value形式存储到分布式数据库 try { 
  //将采集的数据以key-value形式存入分布式数据库中   DataModle dataModle=new DataModle(); 
  dataModle.setTemp(temp);   dataModle.setHumi(humi); 
  dataModle.setCo2(co2);   String jsonString= ZSONObject.toZSonString(dataModle); 
  singleKvStore.putString("data",jsonString); } catch (KvStoreException e) { 
  LogUtils.debug(TAG, "DataServiceAbility::updateData()"+e.getMessage()); }  

5.订阅分布式数据变化。客户端需要实现KvStoreObserver接口，监听数据变化

//订阅类型SubscribeType.SUBSCRIBE_TYPE_ALL意思可以同步到本机和其他外围设备   innerKvStoreObserver = new InnerKvStoreObserver(); 
  singleKvStore.subscribe(SubscribeType.SUBSCRIBE_TYPE_ALL, innerKvStoreObserver); } catch (KvStoreException e) { 
  e.printStackTrace(); } 
 public class InnerKvStoreObserver implements KvStoreObserver { 
   @Override 
  public void onChange(ChangeNotification changeNotification) {     //刷新页面上的数据，同样有一个坑，onChange方法实质上，在一个子线程里执行 
    MainAbilitySlice.taskDispatcher.asyncDispatch(() -> {       //在这里执行页面ui组件的显示刷新 
      flushUIData();     }); 
  } } 

6.获取分布式数据库数据

 //查询分布式数据的数据，获取数据可以通过get（String key）或者 getEntries(String key)方法获取数据 List entries = singleKvStore.getEntries("data"); 
if (entries.size() > 0) {   ZSONObject zsonObject = ZSONObject.stringToZSON(entries.get(0).getValue().getString()); 
  double temp = zsonObject.getDouble("temp");   double humi = zsonObject.getDouble("humi"); 
  double co2 = zsonObject.getDouble("co2");   String strTemp = String.format("%.1f", temp); 
  String strHumi = String.format("%.1f", humi);   String strCO2 = String.format("%.1f", co2); 
  tvTemp.setText(strTemp+"℃");   tvHumi.setText(strHumi+"%RH"); 
  tvCo2.setText(strCO2+"ppm"); } 

7.解除订阅,一般在页面销毁时调用，也就是在onStop()中调用

if (singleKvStore != null) {   singleKvStore.unSubscribe(innerKvStoreObserver); 
} 

8.同步数据到其他设备。获取已连接的设备列表，选择同步方式进行数据同步

List onlineDevices = DeviceManager     .getDeviceList(DeviceInfo.FLAG_GET_ONLINE_DEVICE); 
List deviceIdList = new ArrayList<>(); for (DeviceInfo deviceInfo : deviceInfoList) { 
    deviceIdList.add(deviceInfo.getId()); } 
//迁移到指定设备，传入设备ID列表 singleKvStore.sync(deviceIdList, SyncMode.PUSH_ONLY); 

 项目中采用在后台service中开启定时任务，模拟农业大棚采集数据，实时保存数据到分布式数据库，然后在主界面，监听数据变化，实时更新数据。当选择迁移的设备时，就可以把数据迁移到相应设备。

手机侧应用刚打开时界面

TV侧应用刚打开时界面

点击右上角迁移按钮，并选择迁移设备(P40-0036)

迁移后的左侧设备数据和右侧设备数据就会同步一致

附上源码 手机端

1. PhoneAbilitySlice

public class PhoneAbilitySlice extends AbilitySlice {   private SingleKvStore singleKvStore; 
  private InnerKvStoreObserver innerKvStoreObserver;   private Intent serviceIntent; 
  private Text tvTemp;   private Text tvHumi; 
  private Text tvCo2;   private DeviceData chooseDevice; 
  private DevicesProvider devicesProvider;   private CommonDialog commonDialog; 
  private String TAG="MainAbilitySlice";   private ListdeviceIdList; 
  @Override   public void onStart(Intent intent) { 
    super.onStart(intent);     super.setUIContent(ResourceTable.Layout_ability_main); 
    //设置沉浸式状态栏  getWindow().addFlags(WindowManager.LayoutConfig.MARK_TRANSLUCENT_STATUS);     initView(); 
    initService();     try { 
      //获取数据库       singleKvStore = DBUtils.initOrGetDB(this, DBUtils.KV_STORE_NAME); 
      innerKvStoreObserver = new InnerKvStoreObserver();       //订阅分布式数据库 
      singleKvStore.subscribe(SubscribeType.SUBSCRIBE_TYPE_ALL, innerKvStoreObserver);     } catch (KvStoreException e) { 
      LogUtils.debug(TAG, "MainAbilitySlice::onStart/"+e.getMessage());     } 
  }   private void initService() { 
    //启动ServiceAbility     serviceIntent = new Intent(); 
    Operation operation = new Intent.OperationBuilder()         .withDeviceId("") 
        .withBundleName("com.isoftstone.distributeddata")         .withAbilityName("com.isoftstone.distributeddata.DataServiceAbility") 
        .build();     serviceIntent.setOperation(operation); 
    startAbility(serviceIntent);   } 
  private void initView() {     tvTemp = (Text) findComponentById(ResourceTable.Id_text_temp); 
    tvHumi = (Text) findComponentById(ResourceTable.Id_text_humi);     tvCo2 = (Text) findComponentById(ResourceTable.Id_text_co2); 
    Button bt = (Button) findComponentById(ResourceTable.Id_bt_continue);     bt.setClickedListener(component -> { 
      if (component.getId() == ResourceTable.Id_bt_continue) {         //查看在线设备 
        List onlineDevices = DeviceManager             .getDeviceList(DeviceInfo.FLAG_GET_ONLINE_DEVICE); 
        List deviceDatas = new ArrayList<>();         if (onlineDevices == null || onlineDevices.size() < 1) { 
          CustomerDialog.showToastDialog(getAbility(), "无组网在线设备");         } else { 
          for (DeviceInfo deviceInfo : onlineDevices) {             deviceDatas.add(new DeviceData(false, deviceInfo)); 
          }           showDevices(deviceDatas); 
        }       } 
    });   } 
  private void showDevices(List deviceDatas) {     chooseDevice = null; 
    commonDialog = new CommonDialog(this);     Component component = LayoutScatter.getInstance(this) 
        .parse(ResourceTable.Layout_dialog_layout_device, null, true);     ListContainer listContainer = (ListContainer) component.findComponentById(ResourceTable.Id_list_container_device); 
    devicesProvider = new DevicesProvider(this, deviceDatas);     listContainer.setItemProvider(devicesProvider); 
    listContainer.setItemClickedListener((listContainer1, component1, position, l) -> {       chooseDevice = deviceDatas.get(position); 
      for (int i = 0; i < deviceDatas.size(); i++) {         if (i == position) { 
          deviceDatas.set(i, new DeviceData(true, deviceDatas.get(i).getDeviceInfo()));         } else { 
          deviceDatas.set(i, new DeviceData(false, deviceDatas.get(i).getDeviceInfo()));         } 
      }       devicesProvider = new DevicesProvider(this, deviceDatas); 
      listContainer1.setItemProvider(devicesProvider);     }); 
    Text tvCancle = (Text) component.findComponentById(ResourceTable.Id_operate_no);     Text tvSure = (Text) component.findComponentById(ResourceTable.Id_operate_yes); 
     tvCancle.setClickedListener(component12 -> commonDialog.destroy()); 
     tvSure.setClickedListener(component13 -> { 
      if (chooseDevice == null) {         CustomerDialog.showToastDialog(this, "请选择设备"); 
      } else {         try { 
          deviceIdList=new ArrayList<>();           deviceIdList.add(chooseDevice.getDeviceInfo().getDeviceId()); 
          //手动同步的设备列表           singleKvStore.sync(deviceIdList, SyncMode.PUSH_ONLY); 
          commonDialog.destroy();         } catch (IllegalStateException e) { 
          //流转异常捕获，防止进程存在再次发起流转           LogUtils.debug(TAG, "MainAbilitySlice::singleKvStore.sync()/"+e.getMessage()); 
        }       } 
    });     commonDialog.setSize(MATCH_PARENT, MATCH_CONTENT); 
    commonDialog.setAlignment(LayoutAlignment.BOTTOM);     commonDialog.setCornerRadius(10); 
    commonDialog.setAutoClosable(true);     commonDialog.setContentCustomComponent(component); 
    commonDialog.setTransparent(true);     commonDialog.show(); 
  }   public class InnerKvStoreObserver implements KvStoreObserver { 
     @Override 
    public void onChange(ChangeNotification changeNotification) {       //onChange方法实质上，在一个子线程里执行 
      getUITaskDispatcher().asyncDispatch(() -> {         //在这里执行页面ui组件的显示刷新 
        asyncUpdateData();       }); 
    }   } 
  public void asyncUpdateData(){     //查询分布式数据的数据 
    List entries = singleKvStore.getEntries("data");     if (entries.size() > 0) { 
      ZSONObject zsonObject = ZSONObject.stringToZSON(entries.get(0).getValue().getString());       double temp = zsonObject.getDouble("temp"); 
      double humi = zsonObject.getDouble("humi");       double co2 = zsonObject.getDouble("co2"); 
      String strTemp = String.format("%.1f", temp);       String strHumi = String.format("%.1f", humi); 
      String strCO2 = String.format("%.1f", co2);       tvTemp.setText(strTemp+"℃"); 
      tvHumi.setText(strHumi+"%RH");       tvCo2.setText(strCO2+"ppm"); 
      //手动同步的设备列表       if(singleKvStore!=null){ 
        if(deviceIdList!=null&&deviceIdList.size()>0){           singleKvStore.sync(deviceIdList, SyncMode.PUSH_ONLY); 
        }       } 
    }   } 
   @Override 
  public void onActive() {     super.onActive(); 
  }   @Override 
  public void onForeground(Intent intent) {     super.onForeground(intent); 
  }   @Override 
  protected void onStop() {     super.onStop(); 
    //销毁service     stopAbility(serviceIntent); 
    //删除数据库     DBUtils.clearDB(); 
    //解除订阅     if (singleKvStore != null) { 
      if(innerKvStoreObserver!=null){         singleKvStore.unSubscribe(innerKvStoreObserver); 
      }     } 
  } } 

2. DataServiceAbility

public class DataServiceAbility extends Ability {   private static final HiLogLabel LABEL_LOG = new HiLogLabel(3, 0xD001100, "Demo"); 
  private SingleKvStore singleKvStore;   private NotificationRequest request; 
  private Timer mTimer;   private TimerTask mTimerTask; 
  private String TAG="DataServiceAbility";   @Override 
  public void onStart(Intent intent) {     LogUtils.debug(TAG, "DataServiceAbility::onStart"); 
    super.onStart(intent);     //创建前台service 
    createForeService();     try { 
      singleKvStore = DBUtils.initOrGetDB(this, DBUtils.KV_STORE_NAME);     } catch (Exception e) { 
      LogUtils.debug(TAG, "DataServiceAbility::onStart()"+e.getMessage());     } 
    //每隔10秒，模拟传感器采集一次大棚数据。     if(mTimer==null){ 
      mTimer=new Timer();     } 
    if(mTimerTask==null){       mTimerTask=new TimerTask() { 
        @Override         public void run() { 
          updateData();         } 
      };     } 
    mTimer.schedule(mTimerTask,0,1000*10);   } 
  private void updateData() {     //获取随机温度0-100； 
    double temp= new Random().nextDouble()*100;     //获取随机湿度0-100； 
    double humi= new Random().nextDouble()*100;     //获取随机CO2浓度0-1000 
    double co2= new Random().nextDouble()*1000;     try { 
      //将采集的数据以key-value形式存入分布式数据库中       DataModle dataModle=new DataModle(); 
      dataModle.setTemp(temp);       dataModle.setHumi(humi); 
      dataModle.setCo2(co2);       String jsonString= ZSONObject.toZSonString(dataModle); 
      singleKvStore.putString("data",jsonString);     } catch (KvStoreException e) { 
      LogUtils.debug(TAG, "DataServiceAbility::updateData()"+e.getMessage());     } 
  }   private void createForeService() { 
    // 创建通知，其中1005为notificationId     request = new NotificationRequest(1005); 
    NotificationRequest.NotificationNormalContent content = new NotificationRequest.NotificationNormalContent();     content.setTitle("农业大棚").setText("数据采集服务开启中"); 
    NotificationRequest.NotificationContent notificationContent = new NotificationRequest.NotificationContent(content);     request.setContent(notificationContent); 
    //绑定通知，1005为创建通知时传入的notificationId     keepBackgroundRunning(1005, request); 
  }   @Override 
  public void onBackground() {     super.onBackground(); 
    LogUtils.debug(TAG, "DataServiceAbility::onBackground()");   } 
   @Override 
  public void onStop() {     super.onStop(); 
    if (mTimerTask != null) {       mTimerTask.cancel(); 
      mTimerTask=null;     } if (mTimer != null) { 
      mTimer.cancel();       mTimer=null; 
    }     //停止前台Service。 
    cancelBackgroundRunning();     LogUtils.debug(TAG, "DataServiceAbility::onStop()"); 
  }  
  @Override   public void onCommand(Intent intent, boolean restart, int startId) { 
  }   @Override 
  public IRemoteObject onConnect(Intent intent) {     return null; 
  }   @Override 
  public void onDisconnect(Intent intent) {   } 
} 

3.DBUtils

public class DBUtils {   private static KvManager kvManager; 
  private static SingleKvStore singleKvStore;   public static String KV_STORE_NAME="farm_data"; 
  //具体的实现数据库的初始化   public static SingleKvStore initOrGetDB(Context context, String storeId) { 
    KvManagerConfig kvManagerConfig = new KvManagerConfig(context);     kvManager = KvManagerFactory.getInstance().createKvManager(kvManagerConfig); 
    Options options = new Options();     options.setCreateIfMissing(true) 
        .setEncrypt(false)         .setKvStoreType(KvStoreType.SINGLE_VERSION) 
        .setAutoSync(false);//自动同步为true,手动同步为false     singleKvStore = kvManager.getKvStore(options, storeId); 
    return singleKvStore;   } 
  // 如果数据库中的字段有修改，只能先关闭，后删除，然后重新创建才生效   public static void clearDB() { 
    kvManager.closeKvStore(singleKvStore);     kvManager.deleteKvStore(KV_STORE_NAME); 
  } } 

4. MainAbility

@Override  public void onStart(Intent intent) { 
     super.onStart(intent);      super.setMainRoute(PhoneAbilitySlice.class.getName()); 
     //实现Ability的代码中显式声明需要使用多设备协同访问的权限      requestPermissionsFromUser(new String[]{"ohos.permission.DISTRIBUTED_DATASYNC",}, 0); 
 } 

 5. DataModle

public class DataModle {   private double temp; 
  private double humi;   private double co2; 
  public double getTemp() {     return temp; 
  }   public void setTemp(double temp) { 
    this.temp = temp;   } 
   public double getHumi() { 
    return humi;   } 
  public void setHumi(double humi) {     this.humi = humi; 
  }   public double getCo2() { 
    return co2;   } 
  public void setCo2(double co2) {     this.co2 = co2; 
  } } 

6. DeviceData

public class DeviceData {     private boolean isChecked; 
    private DeviceInfo deviceInfo;          public DeviceData(boolean isChecked, DeviceInfo deviceInfo) { 
        this.isChecked = isChecked;         this.deviceInfo = deviceInfo; 
    }     public DeviceInfo getDeviceInfo() { 
        return deviceInfo;     } 
    public void setDeviceInfo(DeviceInfo deviceInfo) {         this.deviceInfo = deviceInfo; 
    }     public boolean isChecked() { 
        return isChecked;     } 
    public void setChecked(boolean checked) {         isChecked = checked; 
    } } 

7. DevicesProvider

public class DevicesProvider extends baseItemProvider {  
 private List data;  private LayoutScatter layoutScatter; 
  public DevicesProvider(Context context, List data) { 
   this.data = data;    this.layoutScatter = LayoutScatter.getInstance(context); 
 }  
 @Override  public int getCount() { 
   return data.size();  } 
  @Override 
 public Object getItem(int i) {    return data.get(i); 
 }  
 @Override  public long getItemId(int i) { 
   return i;  } 
  @Override 
 public Component getComponent(int position, Component component,      ComponentContainer componentContainer) { 
   ViewHolder viewHolder;    // component相当于Android中的view，其他的和Android中ListView的适配器adapter差不多。 
   // 名字区别也不大，不过Android中ListView基本被淘汰了。    if (component == null) { 
     component = layoutScatter.parse(ResourceTable.Layout_dialog_device_item, null, false);      viewHolder = new ViewHolder(); 
     viewHolder.imgType = (Image) component.findComponentById(ResourceTable.Id_item_type);      viewHolder.tvName = (Text) component.findComponentById(ResourceTable.Id_item_name); 
     viewHolder.imgCheck = (Image) component.findComponentById(ResourceTable.Id_item_check);      component.setTag(viewHolder); 
   } else {      viewHolder = (ViewHolder) component.getTag(); 
   }    DeviceData deviceData = data.get(position); 
   DeviceType deviceType=deviceData.getDeviceInfo().getDeviceType();    switch (deviceType){ 
     case SMART_WATCH:        viewHolder.imgType.setPixelMap(ResourceTable.Media_dv_watch); 
       break;      case SMART_PAD: 
       viewHolder.imgType.setPixelMap(ResourceTable.Media_dv_pad);        break; 
     case SMART_PHONE:        viewHolder.imgType.setPixelMap(ResourceTable.Media_dv_phone); 
       break;    } 
   viewHolder.tvName.setText(deviceData.getDeviceInfo().getDeviceName());    if(deviceData.isChecked()){ 
viewHolder.imgCheck.setImageAndDecodeBounds(ResourceTable.Media_check2); }else {  viewHolder.imgCheck.setImageAndDecodeBounds(ResourceTable.Media_uncheck2);    } 
   return component;  } 
   
 private static class ViewHolder {    private Image imgType; 
   private Text tvName;    private Image imgCheck; 
 } } 

8. CustomerDialog

public class CustomerDialog {   public static void showToastDialog(Context context, String str) { 
    DirectionalLayout toastLayout = (DirectionalLayout) LayoutScatter.getInstance(context)         .parse(ResourceTable.Layout_toast_dialog, null, false); 
    Text text = (Text) toastLayout.findComponentById(ResourceTable.Id_toast);     text.setText(str); 
    new ToastDialog(context)         .setContentCustomComponent(toastLayout) 
        .setSize(DirectionalLayout.LayoutConfig.MATCH_CONTENT,             DirectionalLayout.LayoutConfig.MATCH_CONTENT) 
        .setAlignment(LayoutAlignment.CENTER)         .show(); 
  } } 

9. MyApplication

  @Override   public void onInitialize() { 
    super.onInitialize();   } 
} 

 10. config.json 文件

"app": {   "bundleName": " com.isoftstone.distributeddata ", 
  "vendor": "isoftstone",   "version": { 
    "code": 1000000,     "name": "1.0.0" 
  } }, 
"deviceConfig": {}, "module": { 
  "package": "com.isoftstone.distributeddata",   "name": ".MyApplication", 
  "mainAbility": "com.isoftstone.distributeddata.MainAbility",   "deviceType": [ 
    "phone"   ], 
  "distro": {     "deliveryWithInstall": true, 
    "moduleName": "entry",     "moduleType": "entry", 
    "installationFree": false   }, 
  "reqPermissions": [     { 
      "name": "ohos.permission.DISTRIBUTED_DATASYNC"     }, 
    { 添加此权限，才能查找分布式在线设备 
      "name": "ohos.permission.GET_DISTRIBUTED_DEVICE_INFO"     }, 
    { 将service设置为前台服务，需要添加的权限 
      "name": "ohos.permission.KEEP_BACKGROUND_RUNNING"      } 
  ],   "abilities": [ 
    {       "skills": [ 
        {           "entities": [ 
            "entity.system.home"           ], 
          "actions": [             "action.system.home" 
          ]         } 
      ],       "orientation": "unspecified", 
      "name": "com.isoftstone.distributeddata.MainAbility",       "icon": "$media:icon", 
      "description": "$string:mainability_description",       "label": "$string:entry_MainAbility", 
      "type": "page",       "launchType": "standard" 
    },     { 
      "name": "com.isoftstone.distributeddata.DataServiceAbility",       "icon": "$media:icon", 
      "description": "$string:dataserviceability_description",       "type": "service", 
      "visible": true,       "backgroundModes": [ 
        "dataTransfer",         "location" 
      ]     } 
   ], 
  "metaData": {     "customizeData": [ 
      {         "name": "hwc-theme", 
        "value": "androidhwext:style/Theme.Emui.NoTitleBar",         "extra": "" 
      }     ] 
  } } 

11.ability_main.xml布局文件

   xmlns:ohos="http://schemas.huawei.com/res/ohos"   ohos:height="match_parent" 
  ohos:width="match_parent"   ohos:orientation="vertical"> 
       ohos:width="match_parent"     ohos:height="match_content" 
    ohos:orientation="horizontal"     ohos:top_padding="50vp" 
    ohos:bottom_padding="20vp"     ohos:left_padding="20vp" 
    ohos:right_padding="20vp"     ohos:background_element="$graphic:background_ability_main"> 
          ohos:height="match_content"       ohos:text="农业大棚数据监测" 
      ohos:text_size="26vp"       ohos:text_color="#ffffff" 
      ohos:center_in_parent="true"/>           ohos:id="$+id:bt_continue"       ohos:width="25vp" 
      ohos:height="25vp"       ohos:background_element="$media:conti" 
      ohos:align_parent_right="true"       ohos:vertical_center="true"/> 
         ohos:height="match_content"     ohos:width="match_parent" 
    ohos:background_element="#f4f5f7"     ohos:left_padding="15vp" 
    ohos:right_padding="15vp"     ohos:top_padding="10vp" 
    ohos:bottom_padding="10vp">  
          ohos:width="match_content"       ohos:text="温度：" 
      ohos:text_color="#000000"       ohos:text_size="18fp" 
      ohos:vertical_center="true"/>  
          ohos:height="match_content"       ohos:width="match_content" 
      ohos:text="数据正在采集 "       ohos:text_color="#00ff00" 
      ohos:text_size="18fp"       ohos:left_margin="50vp" 
      ohos:vertical_center="true"/>    
       ohos:height="2vp"     ohos:width="match_content" 
    ohos:background_element="#FFFFFF"/>  
      ohos:width="match_parent"     ohos:background_element="#f4f5f7" 
    ohos:left_padding="15vp"     ohos:right_padding="15vp" 
    ohos:top_padding="10vp"     ohos:bottom_padding="10vp"> 
           ohos:height="match_content"       ohos:width="match_content" 
      ohos:text="湿度："       ohos:text_color="#000000" 
      ohos:text_size="18fp"       ohos:vertical_center="true"/> 
           ohos:id="$+id:text_humi"       ohos:height="match_content" 
      ohos:width="match_content"       ohos:text="数据正在采集 " 
      ohos:text_color="#00ff00"       ohos:text_size="18fp" 
      ohos:left_margin="50vp"       ohos:vertical_center="true"/> 
    
      ohos:width="match_content"     ohos:background_element="#FFFFFF"/> 
       ohos:height="match_content"     ohos:width="match_parent" 
    ohos:background_element="#f4f5f7"     ohos:left_padding="15vp" 
    ohos:right_padding="15vp"     ohos:top_padding="10vp" 
    ohos:bottom_padding="10vp">  
          ohos:width="match_content"       ohos:text="CO2：" 
      ohos:text_color="#000000"       ohos:text_size="18fp" 
      ohos:vertical_center="true"/>  
          ohos:height="match_content"       ohos:width="match_content" 
      ohos:text="数据正在采集 "       ohos:text_color="#00ff00" 
      ohos:text_size="18fp"       ohos:left_margin="50vp" 
      ohos:vertical_center="true"/>    
  
 

12. dialog_device_item.xml

     xmlns:ohos="http://schemas.huawei.com/res/ohos"     ohos:height="70vp" 
    ohos:width="match_parent"     ohos:orientation="horizontal"> 
             ohos:id="$+id:item_type"         ohos:height="45vp" 
        ohos:width="50vp"         ohos:image_src="$media:dv_phone" 
        ohos:layout_alignment="vertical_center"         ohos:left_margin="10vp" 
        ohos:scale_mode="inside"/>  
            ohos:height="match_parent"         ohos:width="0vp" 
        ohos:max_text_lines="1"         ohos:text="Huawei P40" 
        ohos:text_alignment="vertical_center"         ohos:text_size="15fp" 
        ohos:weight="1"/>  
            ohos:height="30vp"         ohos:width="30vp" 
        ohos:image_src="$media:uncheck2"  

    ohos:height="340vp"     ohos:width="match_parent" 
    ohos:orientation="vertical">  
            ohos:width="match_parent"         ohos:background_element="$graphic:background_white_radius_10" 
        ohos:bottom_margin="50vp"         ohos:left_margin="20vp" 
        ohos:orientation="vertical"         ohos:right_margin="20vp"> 
                     ohos:height="50vp"             ohos:width="match_parent" 
            ohos:left_padding="20vp"             ohos:text="迁移到其他设备" 
            ohos:text_alignment="vertical_center"             ohos:text_color="#000000" 
            ohos:text_size="16fp"/>  
                    ohos:height="0vp"             ohos:width="match_parent" 
            ohos:weight="1"/>  
                    ohos:width="match_parent"             ohos:orientation="horizontal"> 
                             ohos:id="$+id:operate_no"                 ohos:height="match_parent" 
                ohos:width="0vp"                 ohos:text="取消" 
                ohos:text_alignment="center"                 ohos:text_color="#1e90ff" 
                ohos:text_size="17fp"                 ohos:weight="1"/> 
                             ohos:height="25vp"                 ohos:width="1vp" 
                ohos:background_element="#cccccc"                 ohos:layout_alignment="vertical_center"/> 
                             ohos:id="$+id:operate_yes"                 ohos:height="match_parent" 
                ohos:width="0vp"                 ohos:text="确定" 
                ohos:text_alignment="center"                 ohos:text_color="#1e90ff" 
                ohos:text_size="17fp"                 ohos:weight="1"/> 
              
 

14. toast_dialog.xml

    ohos:height="match_content"     ohos:width="match_content" 
    ohos:orientation="vertical"     ohos:background_element="$graphic:background_gray_circle"> 
            ohos:height="match_content"         ohos:width="match_content" 
        ohos:left_padding="16vp"         ohos:right_padding="16vp" 
        ohos:top_padding="4vp"         ohos:bottom_padding="4vp" 
        ohos:layout_alignment="center"         ohos:text_size="20fp"/> 
 

TV端

1. TVAbilitySlice

  private Text tvTemp;     private Text tvTempMax; 
    private Text tvTempMin;  
    private Text tvHumi;     private Text tvHumiMax; 
    private Text tvHumiMin;  
    private Text tvCgas;     private Text tvCgasMax; 
    private Text tvCgasMin;  
    private Text tvTempStatus;     private Text tvHumiStatus; 
    private Text tvCgasStatus;  
     private ProgressBar rgbTem; 
    private ProgressBar rgbHumi;     private ProgressBar rgbCgas; 
     private static final HiLogLabel label = new HiLogLabel(HiLog.LOG_APP, 0x0001, "my_log"); 
     private double temp; 
    private double humi;     private double cGas; 
    private SingleKvStore singleKvStore;     private KvStoreObserverClient kvStoreObserverClient; 
     @Override 
    public void onStart(Intent intent) {         super.onStart(intent); 
        super.setUIContent(ResourceTable.Layout_ability_tv);         //设置沉浸式状态栏 
        getWindow().addFlags(WindowManager.LayoutConfig.MARK_TRANSLUCENT_STATUS);  
        tvTemp = (Text) findComponentById(ResourceTable.Id_tvTemp);         tvTempMax = (Text) findComponentById(ResourceTable.Id_tvMaxTemp); 
        tvTempMin = (Text) findComponentById(ResourceTable.Id_tvMinTemp);         rgbTem = (RoundProgressBar) findComponentById(ResourceTable.Id_rgb_tem); 
         tvHumi = (Text) findComponentById(ResourceTable.Id_tvHumi); 
        tvHumiMax = (Text) findComponentById(ResourceTable.Id_tvMaxHumi);         tvHumiMin = (Text) findComponentById(ResourceTable.Id_tvMinHumi); 
        rgbHumi = (RoundProgressBar) findComponentById(ResourceTable.Id_rgb_humi);  
        tvCgas = (Text) findComponentById(ResourceTable.Id_tvCgas);         tvCgasMax = (Text) findComponentById(ResourceTable.Id_tvMaxCgas); 
        tvCgasMin = (Text) findComponentById(ResourceTable.Id_tvMinCgas);         rgbCgas = (RoundProgressBar) findComponentById(ResourceTable.Id_rgb_gas); 
         tvTempStatus = (Text) findComponentById(ResourceTable.Id_tvTempStatus); 
        tvHumiStatus = (Text) findComponentById(ResourceTable.Id_tvHumiStatus);         tvCgasStatus = (Text) findComponentById(ResourceTable.Id_tvCgasStatus); 
         try { 
            KvManagerConfig config = new KvManagerConfig(getContext());             KvManager kvManager = KvManagerFactory.getInstance().createKvManager(config); 
            Options CREATE = new Options();             CREATE.setCreateIfMissing(true).setEncrypt(false) 
                .setKvStoreType(KvStoreType.SINGLE_VERSION)                 .setAutoSync(true); 
            singleKvStore = kvManager.getKvStore(CREATE, DBUtils.KV_STORE_NAME);             kvStoreObserverClient = new KvStoreObserverClient(); 
            singleKvStore.subscribe(SubscribeType.SUBSCRIBE_TYPE_ALL, kvStoreObserverClient);         } catch (Exception e) { 
            e.printStackTrace();         } 
     } 
     private class KvStoreObserverClient implements KvStoreObserver { 
         @Override 
        public void onChange(ChangeNotification notification) {             //onChange方法实质上，在一个子线程里执行 
            getUITaskDispatcher().asyncDispatch(() -> {                 //在这里执行页面ui组件的显示刷新 
                asyncUpdateData();             }); 
        }     } 
  
    public void asyncUpdateData(){         //查询分布式数据的数据 
        List entries = singleKvStore.getEntries("data");         if (entries.size() > 0) { 
            ZSONObject zsonObject = ZSONObject.stringToZSON(entries.get(0).getValue().getString());             double temp = zsonObject.getDouble("temp"); 
            double humi = zsonObject.getDouble("humi");             double co2 = zsonObject.getDouble("co2"); 
            String strTemp = String.format("%.1f", temp);             String strHumi = String.format("%.1f", humi); 
            String strCO2 = String.format("%.1f", co2);             initView(strTemp,strHumi,strCO2); 
         } 
    }  
    private void initView(String strTemp,String strHumi,String strCO2) {         temp = Double.valueOf(strTemp); 
        int tempMax = 45;         int tempMin = -10; 
         humi = Double.valueOf(strHumi); 
        int humiMax = 70;         int humiMin = 10; 
         cGas = Double.valueOf(strCO2); 
        int cGasMax = 1000;  
        if (temp > -100) {             if (temp > tempMax || temp < tempMin) { 
                tvTemp.setTextColor(Color.RED);                 tvTempStatus.setText("异常"); 
                tvTempStatus.setTextColor(Color.RED);                 rgbTem.setProgressColor(Color.RED); 
            } else {                 tvTemp.setTextColor(Color.GREEN); 
                tvTempStatus.setText("正常");                 tvTempStatus.setTextColor(Color.GREEN); 
                rgbTem.setProgressColor(Color.GREEN);  
            }         } else { 
            tvTemp.setTextColor(Color.BLACK);             tvTempStatus.setTextColor(Color.BLACK); 
            tvTempStatus.setText("未知");             rgbTem.setProgressColor(Color.GREEN); 
         } 
        tvTempMax.setText(tempMax + "℃");         tvTempMin.setText(tempMin + "℃"); 
         if (humi > -100) { 
            if (humi > humiMax || humi < humiMin) {                 tvHumi.setTextColor(Color.RED); 
                tvHumiStatus.setText("异常");                 tvHumiStatus.setTextColor(Color.RED); 
                rgbHumi.setProgressColor(Color.RED);             } else { 
                tvHumi.setTextColor(Color.GREEN);                 tvHumiStatus.setText("正常"); 
                tvHumiStatus.setTextColor(Color.GREEN);                 rgbHumi.setProgressColor(Color.GREEN); 
            }         } else { 
            tvHumi.setTextColor(Color.BLACK);             tvHumiStatus.setText("未知"); 
            tvHumiStatus.setTextColor(Color.BLACK);             rgbHumi.setProgressColor(Color.GREEN); 
         } 
        tvHumiMax.setText(humiMax + "% RH");         tvHumiMin.setText(humiMin + "% RH"); 
         if (cGas > -100) { 
            if (cGas > cGasMax) {                 tvCgas.setTextColor(Color.RED); 
                tvCgasStatus.setText("异常");                 tvCgasStatus.setTextColor(Color.RED); 
                rgbCgas.setProgressColor(Color.RED);             } else { 
                tvCgas.setTextColor(Color.GREEN);                 tvCgasStatus.setText("正常"); 
                tvCgasStatus.setTextColor(Color.GREEN);             } 
        } else {             tvCgas.setTextColor(Color.BLACK); 
            tvCgasStatus.setText("未知");             tvCgasStatus.setTextColor(Color.BLACK); 
            rgbCgas.setProgressColor(Color.GREEN);  
        }  
        tvCgasMax.setText(cGasMax + " ppm");  
        tvCgasMin.setText(0 + " ppm");  
        if (temp <= -100) {             tvTemp.setText("未知"); 
            rgbTem.setProgressValue(0);         } else { 
            tvTemp.setText(temp + "℃");             rgbTem.setProgressValue((int) temp); 
        }         if (humi <= -100) { 
            tvHumi.setText("未知");             rgbHumi.setProgressValue(0); 
        } else {             tvHumi.setText(humi + "% RH"); 
            rgbHumi.setProgressValue((int) humi);         } 
        if (cGas <= -100) {             tvCgas.setText("未知"); 
            rgbCgas.setProgressValue(0);         } else { 
            tvCgas.setText(cGas + " ppm");             rgbCgas.setProgressValue((int) cGas); 
        }  
    }  
     @Override 
    protected void onStop() {         super.onStop(); 
        //解除订阅 //        if (singleKvStore != null) { 
//            if(kvStoreObserverClient!=null){ //                singleKvStore.unSubscribe(kvStoreObserverClient); 
//            } //        } 
    } } 

2. TVAbility

public class TVAbility extends Ability {  
  @Override   public void onStart(Intent intent) { 
    super.onStart(intent);     super.setMainRoute(TVAbilitySlice.class.getName()); 
    //实现Ability的代码中显式声明需要使用多设备协同访问的权限     requestPermissionsFromUser(new String[]{"ohos.permission.DISTRIBUTED_DATASYNC",}, 0); 
  } } 

 3. ability_tv.xml

   xmlns:ohos="http://schemas.huawei.com/res/ohos"   ohos:height="match_parent" 
  ohos:width="match_parent"   ohos:orientation="vertical" 
  ohos:background_element="$media:haibao">  
      ohos:width="match_content"     ohos:text="大棚数据监测" 
    ohos:text_color="#ffffff"     ohos:text_size="26vp" 
    ohos:layout_alignment="center"     ohos:top_margin="50vp"/> 
       ohos:height="match_parent"     ohos:width="match_parent"> 
           ohos:height="match_content"       ohos:width="match_parent" 
      ohos:left_padding="10vp"       ohos:right_padding="10vp" 
      ohos:center_in_parent="true"       ohos:orientation="horizontal"> 
              ohos:width="0"         ohos:weight="1" 
        ohos:layout_alignment="center"         ohos:orientation="vertical"> 
                  ohos:width="match_content"           ohos:text="温度数据" 
          ohos:text_size="20vp"           ohos:padding="5vp" 
          ohos:text_color="#ffffff"           ohos:layout_alignment="center"/> 
                  ohos:width="match_parent"           ohos:background_element="#ffffff" 
          ohos:top_margin="15vp"           ohos:left_margin="20vp" 
          ohos:right_margin="20vp"           ohos:layout_alignment="center" 
          ohos:bottom_margin="15vp"           ohos:visibility="invisible"/> 
                  ohos:width="match_content"           ohos:layout_alignment="center" 
          ohos:orientation="horizontal">                       ohos:height="match_parent"             ohos:width="match_content" 
            ohos:orientation="vertical">                           ohos:height="0"               ohos:width="match_content" 
              ohos:text="最高温度阀值："               ohos:text_size="16vp" 
              ohos:weight="1"               ohos:text_color="#000000"/> 
                          ohos:width="match_content"               ohos:text="当前温度：" 
              ohos:text_size="16vp"               ohos:weight="1" 
              ohos:text_color="#000000"/>                           ohos:height="0"               ohos:width="match_content" 
              ohos:text="最低温度阀值："               ohos:text_size="16vp" 
              ohos:weight="1"               ohos:text_color="#000000"/> 
            
                      ohos:width="100vp">                           ohos:id="$+id:rgb_tem"               ohos:height="match_parent" 
              ohos:width="match_parent"               ohos:progress_width="10vp" 
              ohos:progress="0"               ohos:max="100" 
              ohos:start_angle="215"               ohos:max_angle="290" 
              ohos:progress_color="#00ff00"               ohos:center_in_parent="true"/> 
                          ohos:height="match_content"               ohos:width="match_content" 
              ohos:text_size="15vp"               ohos:text_color="#000000" 
              ohos:align_parent_top="true"               ohos:text="未知" 
              ohos:top_margin="8vp"               ohos:horizontal_center="true"/> 
                          ohos:height="match_content"               ohos:width="match_content" 
              ohos:text_size="15vp"               ohos:text_color="#000000" 
              ohos:text="未知"               ohos:center_in_parent="true"/> 
                          ohos:height="match_content"               ohos:width="match_content" 
              ohos:text_size="14vp"               ohos:text_color="#000000" 
              ohos:text="未知"               ohos:bottom_margin="8vp" 
              ohos:align_parent_bottom="true"               ohos:horizontal_center="true"/> 
            
          
                   ohos:height="3vp"           ohos:width="match_parent" 
          ohos:background_element="#ffffff"           ohos:top_margin="15vp" 
          ohos:left_margin="20vp"           ohos:right_margin="20vp" 
          ohos:layout_alignment="center"           ohos:bottom_margin="15vp" 
          ohos:visibility="invisible"/>                   ohos:height="match_content"           ohos:width="match_content" 
          ohos:layout_alignment="center"           ohos:orientation="horizontal"> 
                      ohos:width="match_content"             ohos:text="温度状态：" 
            ohos:text_size="18vp"             ohos:text_color="#000000"/> 
                      ohos:height="match_content"             ohos:width="match_content" 
            ohos:text="未知"             ohos:text_size="18vp" 
            ohos:text_color="#000000"/>          
        
               ohos:height="90vp"         ohos:width="1vp" 
        ohos:background_element="#000000"         ohos:top_margin="6vp" 
        ohos:layout_alignment="center"/>  
              ohos:width="0"         ohos:weight="1" 
        ohos:layout_alignment="center"         ohos:orientation="vertical"> 
                  ohos:width="match_content"           ohos:text="湿度数据" 
          ohos:text_size="20vp"           ohos:padding="5vp" 
          ohos:text_color="#ffffff"           ohos:layout_alignment="center"/> 
                  ohos:width="match_parent"           ohos:background_element="#ffffff" 
          ohos:top_margin="15vp"           ohos:left_margin="20vp" 
          ohos:right_margin="20vp"           ohos:layout_alignment="center" 
          ohos:bottom_margin="15vp"           ohos:visibility="invisible"/> 
  
                  ohos:width="match_content"           ohos:layout_alignment="center" 
          ohos:orientation="horizontal">                       ohos:height="match_parent"             ohos:width="match_content" 
            ohos:orientation="vertical">                           ohos:height="0"               ohos:width="match_content" 
              ohos:text="最大湿度阀值："               ohos:text_size="16vp" 
              ohos:weight="1"               ohos:text_color="#000000"/> 
                          ohos:width="match_content"               ohos:text="当前湿度：" 
              ohos:text_size="16vp"               ohos:weight="1" 
              ohos:text_color="#000000"/>                           ohos:height="0"               ohos:width="match_content" 
              ohos:text="最小湿度阀值："               ohos:text_size="16vp" 
              ohos:weight="1"               ohos:text_color="#000000"/> 
            
                      ohos:width="100vp">                           ohos:id="$+id:rgb_humi"               ohos:height="match_parent" 
              ohos:width="match_parent"               ohos:progress_width="10vp" 
              ohos:progress="0"               ohos:max="100" 
              ohos:start_angle="215"               ohos:max_angle="290" 
              ohos:progress_color="#00ff00"               ohos:center_in_parent="true"/> 
                          ohos:height="match_content"               ohos:width="match_content" 
              ohos:text_size="15vp"               ohos:text_color="#000000" 
              ohos:text="未知"               ohos:top_margin="8vp" 
              ohos:horizontal_center="true"               ohos:align_parent_top="true"/> 
                          ohos:height="match_content"               ohos:width="match_content" 
              ohos:text_size="15vp"               ohos:text_color="#000000" 
              ohos:text="未知"               ohos:center_in_parent="true"/> 
                          ohos:height="match_content"               ohos:width="match_content" 
              ohos:text_size="15vp"               ohos:text_color="#000000" 
              ohos:horizontal_center="true"               ohos:text="未知" 
              ohos:bottom_margin="8vp"               ohos:align_parent_bottom="true"/> 
            
          
                  ohos:width="match_parent"           ohos:background_element="#ffffff" 
          ohos:top_margin="15vp"           ohos:left_margin="20vp" 
          ohos:right_margin="20vp"           ohos:layout_alignment="center" 
          ohos:bottom_margin="15vp"           ohos:visibility="invisible"/> 
                  ohos:width="match_content"           ohos:layout_alignment="center" 
          ohos:orientation="horizontal">                       ohos:height="match_content"             ohos:width="match_content" 
            ohos:text="湿度状态："             ohos:text_size="18vp" 
            ohos:text_color="#000000"/>                       ohos:id="$+id:tvHumiStatus"             ohos:height="match_content" 
            ohos:width="match_content"             ohos:text="未知" 
            ohos:text_size="18vp"             ohos:text_color="#000000"/> 
          
        
  
              ohos:width="1vp"         ohos:background_element="#000000" 
        ohos:top_margin="6vp"         ohos:layout_alignment="center"/> 
  
  
              ohos:width="0"         ohos:weight="1" 
        ohos:layout_alignment="center"         ohos:orientation="vertical"> 
                  ohos:width="match_content"           ohos:text="CO2数据" 
          ohos:text_size="20vp"           ohos:padding="5vp" 
          ohos:text_color="#ffffff"           ohos:layout_alignment="center"/> 
                  ohos:width="match_parent"           ohos:background_element="#ffffff" 
          ohos:top_margin="15vp"           ohos:left_margin="20vp" 
          ohos:right_margin="20vp"           ohos:layout_alignment="center" 
          ohos:bottom_margin="15vp"           ohos:visibility="invisible"/> 
                  ohos:width="match_content"           ohos:layout_alignment="center" 
          ohos:orientation="horizontal">                       ohos:height="match_parent"             ohos:width="match_content" 
            ohos:orientation="vertical">                           ohos:height="0"               ohos:width="match_content" 
              ohos:text="最大气体增量："               ohos:text_size="16vp" 
              ohos:weight="1"               ohos:text_color="#000000"/> 
                          ohos:width="match_content"               ohos:text="当前增量：" 
              ohos:text_size="16vp"               ohos:weight="1" 
              ohos:text_color="#000000"/>                           ohos:height="0"               ohos:width="match_content" 
              ohos:text="最小气体增量："               ohos:text_size="16vp" 
              ohos:weight="1"               ohos:text_color="#000000"/> 
            
                      ohos:width="100vp">                           ohos:id="$+id:rgb_gas"               ohos:height="match_parent" 
              ohos:width="match_parent"               ohos:progress_width="10vp" 
              ohos:progress="0"               ohos:max="1000" 
              ohos:start_angle="215"               ohos:max_angle="290" 
              ohos:progress_color="#00ff00"               ohos:center_in_parent="true"/> 
                          ohos:height="match_content"               ohos:width="match_content" 
              ohos:text_size="15vp"               ohos:text="未知" 
              ohos:text_color="#000000"               ohos:top_margin="8vp" 
              ohos:horizontal_center="true"               ohos:align_parent_top="true"/> 
                          ohos:height="match_content"               ohos:width="match_content" 
              ohos:text_size="15vp"               ohos:text="未知" 
              ohos:text_color="#000000"               ohos:center_in_parent="true"/> 
                          ohos:height="match_content"               ohos:width="match_content" 
              ohos:text_size="15vp"               ohos:text="未知" 
              ohos:text_color="#000000"               ohos:bottom_margin="8vp" 
              ohos:horizontal_center="true"               ohos:align_parent_bottom="true"/> 
                    
                   ohos:height="3vp"           ohos:width="match_parent" 
          ohos:background_element="#ffffff"           ohos:top_margin="15vp" 
          ohos:left_margin="20vp"           ohos:right_margin="20vp" 
          ohos:layout_alignment="center"           ohos:bottom_margin="15vp" 
          ohos:visibility="invisible"/>  
                   ohos:height="match_content"           ohos:width="match_content" 
          ohos:layout_alignment="center"           ohos:orientation="horizontal"> 
                      ohos:width="match_content"             ohos:text="气体状态：" 
            ohos:text_size="18vp"             ohos:text_color="#000000"/> 
                      ohos:height="match_content"             ohos:width="match_content" 
            ohos:text="未知"             ohos:text_size="18vp" 
            ohos:text_color="#000000"/>          
            
    
 

4.config.json

{   "app": { 
    "bundleName": "com.isoftstone. distributeddata ",     "vendor": "isoftstone", 
    "version": {       "code": 1000000, 
      "name": "1.0.0"     } 
  },   "deviceConfig": {}, 
  "module": {     "package": "com.isoftstone.distributeddata", 
    "name": ".MyApplication",     "mainAbility": "com.isoftstone.distributeddata.com.isoftstone.distributeddata.TVAbility", 
    "deviceType": [       "phone" 
    ],     "distro": { 
      "deliveryWithInstall": true,       "moduleName": "entry", 
      "moduleType": "entry",       "installationFree": false 
    },     "reqPermissions": [ 
      {         "name": "ohos.permission.DISTRIBUTED_DATASYNC" 
      }     ], 
    "abilities": [       { 
        "skills": [           { 
            "entities": [               "entity.system.home" 
            ],             "actions": [ 
              "action.system.home"             ] 
          }         ], 
        "orientation": "landscape",         "name": "com.isoftstone.distributeddata.TVAbility", 
        "icon": "$media:icon",         "description": "$string:tvability_description", 
        "label": "$string:entry_TVAbility",         "type": "page", 
        "launchType": "standard"       } 
    ],     "metaData": { 
      "customizeData": [         { 
          "name": "hwc-theme",           "value": "androidhwext:style/Theme.Emui.NoTitleBar", 
          "extra": ""         } 
      ]     } 
  } } 

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