加速度计服务在 Android TV Box 上不起作用

Posted 2023-04-14

【中文标题】加速度计服务在 Android TV Box 上不起作用

【英文标题】：Acceleromter service does not work on Android TV Box

【发布时间】：2017-07-08 13:44:09

【问题描述】：

我正在开发一个在后台运行 Accelerometer 服务的应用程序。在这个加速度计服务中，我从服务器获取数据。但该应用程序在手机上运行良好，但在 android 电视盒上不运行。 这是代码

 public class AccelerometerService extends Service implements    
 SensorEventListener
  
 public IBinder onBind(Intent intent)   
 
  // TODO: Return the communication channel to the service.
   throw new UnsupportedOperationException("Not yet implemented");
  

boolean loading_data=false;

public void onCreate()  
    

screenLock = ((PowerManager)getSystemService(POWER_SERVICE)).newWakeLock(
         PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "TAG");

//((( Hanlder Class RUN after 1 Seocond. Update Time/Date  )))))
    final Handler someHandler = new Handler(getMainLooper());
      someHandler.postDelayed(new Runnable() 
  
       @SuppressWarnings("deprecation")
       @Override
      public void run()
      
         someHandler.postDelayed(this, 2000);

      //     total_sec_count=obj.Get_Count_Val();

        // total_sec_count+=2;

         //obj.Set_Screen_count(total_sec_count);

        // showtoast("ddd = "+total_sec_count);
        // Log.e("count val = ",""+total_sec_count);


        // showtoast(("lat/long = "+SingletonClass.getInstance().Get_Latitude()+":"+SingletonClass.getInstance().Get_Longitude()));
      
  , 2000);

public void TunrOnWifi() 
 
   WifiManager wifiManager =    
(WifiManager)this.getSystemService(Context.WIFI_SERVICE);
   wifiManager.setWifiEnabled(true);
   showtoast("Wifi Tunred On");
  

public void onSensorChanged(SensorEvent event) 
 


if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) 
    long curTime = System.currentTimeMillis();
    if ((curTime - mLastShakeTime) > MIN_TIME_BETWEEN_SHAKES_MILLISECS) 

        float x = event.values[0];
        float y = event.values[1];
        float z = event.values[2];

        double acceleration = Math.sqrt(Math.pow(x, 2) +
                Math.pow(y, 2) +
                Math.pow(z, 2)) - SensorManager.GRAVITY_EARTH;
       /// Log.e("mySensor", "Acceleration is " + acceleration + "m/s^2");

        if (acceleration > SHAKE_THRESHOLD) 
        
            mLastShakeTime = curTime;
            Log.e("this", "FALL DETECTED");

        

        if(networkobj.Check_Network_Status()==false)
        TunrOnWifi();

        if(!db.Get_User_Info().get(3).equalsIgnoreCase("NoEmail"))
        

             if(loading_data==false)
             
                 Log.e("Loading DATA STARTED......",""+status+" "+email);

                loading_data=true;
                SigninAccount();
             
        

       //  Log.e("Accelertion is = ",""+acceleration + "m/s^2");
        if(db.GetAppStatus().equalsIgnoreCase("approved"))
        
            //Log.e("APP IS Approved = ",""+acceleration + "m/s^2"+" "+email);
        
        else
        
            //Log.e("APP is not Approved = ",""+acceleration + "m/s^2 "+email);

            //if(!db.Get_User_Info().get(3).equalsIgnoreCase("NoEmail"))
              Move_App_Back_to_ForeGround();

        



    

//EOF Onsensor 改变了

public int onStartCommand(Intent intent, int flags, int startId) Log.e("this", "开始检测"); SM = (SensorManager)getSystemService(SENSOR_SERVICE); mySensor = SM.getDefaultSensor(Sensor.TYPE_ACCELEROMETER); SM.registerListener(this, mySensor, SensorManager.SENSOR_DELAY_NORMAL);

//here u should make your service foreground so it will keep working even if app closed


return Service.START_STICKY;

@覆盖 公共无效 onAccuracyChanged（传感器 arg0，int arg1） // TODO 自动生成的方法存根

public void showtoast(String str)

    Toast.makeText(this, str, Toast.LENGTH_LONG).show();


//((( Move App To Screen from Background ))))
public void Move_App_Back_to_ForeGround()

    boolean foregroud=false;
    try
    
     foregroud = new ForegroundCheckTask().execute(getApplicationContext()).get();
     catch (InterruptedException e) 
       e.printStackTrace();
    
    catch (ExecutionException e) 
    
        e.printStackTrace();
    

    if(!foregroud)
    
    //Open Activity IF it is in Background...
    Intent it = new Intent("intent.my.action");
    it.setComponent(new ComponentName(this.getPackageName(),LoginActivity.class.getName()));        
    it.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_SINGLE_TOP);
    this.getApplicationContext().startActivity(it);


    


class ForegroundCheckTask extends AsyncTask<Context, Void, Boolean> 

      @Override
      protected Boolean doInBackground(Context... params) 
        final Context context = params[0].getApplicationContext();
        return isAppOnForeground(context);
      

      private boolean isAppOnForeground(Context context) 
        ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        List<RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
        if (appProcesses == null) 
          return false;
        
        final String packageName = context.getPackageName();
        for (RunningAppProcessInfo appProcess : appProcesses) 
          if (appProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND && appProcess.processName.equals(packageName)) 
            return true;
          
        
        return false;
      
    


public void SigninAccount()
   
    ArrayList<String>data=new ArrayList<String>();
    data=db.Get_User_Info();
    name=db.Get_User_Info().get(1);
    password=db.Get_User_Info().get(2);
    email=db.Get_User_Info().get(3);


    AsyncTask<Void, Void, String> task = new AsyncTask<Void, Void, String>() 
        
            String message="Nothing happend";
         @Override
         protected String doInBackground(Void... params) 
            

          InputStream is=null;
          String result=null;
           ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
           nameValuePairs.add(new BasicNameValuePair("email",email));






    try
        HttpClient httpclient = new DefaultHttpClient();//("http://employeetrackersystem.comule.com/signin.php");/
        HttpPost httppost = new HttpPost("http://pir.alphasols.com/Android_SmartTV_App/login_in_background.php");          
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
        HttpResponse response = httpclient.execute(httppost);
        HttpEntity entity = response.getEntity();
        is = entity.getContent();

        //Now get the response of the Registeration of new User
        try 

            if (entity != null) 
                InputStream instream = is;//entity.getContent();
                String result1= convertStreamToString(instream); //calling function

               // Log.e("result",""+result1.toString());


               JSONArray arr = new JSONArray(result1);

                name=arr.getJSONObject(0).getString("1");                   
                status=arr.getJSONObject(1).getString("1");

                message=name;               
                instream.close();
            

         catch (Exception e) 
        
              message="Error occured";//: "+e.toString();
          


    
     catch(Exception e)
    
         message="Error occured";
    

    return null;

    protected void onPostExecute(String token) 

   
             // showtoast("message = "+message);
       loading_data=false;

      if( !(message.equalsIgnoreCase("no_email")))
      

      if(!(message.equalsIgnoreCase("Error occured")))
       



          obj.set_create_account(name, email, password);

          // set user name/email/password
            db.DroTable();
            db.Add_User(email, password, email);
            db.Add_User(name, password, email);


            db.DropStatusTable();
            db.Add_App_Status(""+status);

          //  showtoast("Loading done  "+status);

       
      

      else
      
          //showtoast("Not signed in, Email or password is incorrect");

      
       ;
        task.execute();  

    


public boolean Email_Validation(String email)

    Pattern pattern = Pattern.compile(".+@.+\\.[a-z]+");

    //String email = "[e-mail]";

    Matcher matcher = pattern.matcher(email);

    boolean matchFound = matcher.matches();

    return matchFound;



//((((-- Convert the stream from Url to string --)))
private static String convertStreamToString(InputStream is) 
    /*
     * To convert the InputStream to String we use the BufferedReader.readLine()
     * method. We iterate until the BufferedReader return null which means
     * there's no more data to read. Each line will appended to a StringBuilder
     * and returned as String.
     */
    BufferedReader reader = new BufferedReader(new InputStreamReader(is));
    StringBuilder sb = new StringBuilder();

    String line = null;
    try 
        while ((line = reader.readLine()) != null) 
            sb.append(line + "\n");
        
     catch (IOException e) 
        e.printStackTrace();
     finally 
        try 
            is.close();
         catch (IOException e) 
            e.printStackTrace();
        
    
    return sb.toString();

//EOF AcclerometerService类

【问题讨论】：

电视盒有加速度计吗？

我不知道。因为我正在为某人远程工作

【参考方案1】：

在初始化传感器对象的地方，您应该检查它是否存在，如果不存在则产生正确的错误：

SensorManager sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
Sensor accelerometer = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
if (accelerometer != null)

    // Device has Accelerometer