数据成功插入到我的sqlite数据库中，但是当我返回它时，它没有返回存储的值吗?

问题描述

在我的应用程序中，我跟踪用户消耗的卡路里，并且当我试图从我的sqlite数据库中检索每日所需的卡路里计数器时，它返回为零，但是当我逐行调试应用程序时，计数器的初始化和更新值正确完成，并且其值为非零"，为什么将其返回为零?我退货的方式有错误吗?请帮助我

更新代码

In my app i track the user consumed calories ,and when iam trying to retrieve the daily needed calories counter from my sqlite data base it returned as zero , but when i debug my app line by line the initialization and update of the counter value is done correctly and it have a value " not zero" , why its returned as zero ? is there error in the way i returned it ? please help me

update code

<pre lang="java">
// update Daily needed cals Counter and other nutrients counters
        DBAdapter    db=new  DBAdapter(SaveMeal.this);
        db.open();

        String date = db.getDate(FormateDate());
        if(date.equals("not exist"))// first  save in the data base in this day 
        {
            long d =db.InitializeCounters(FormateDate());

            Log.e("intialize tracker counters" ,d+"inserted ?");
            boolean  st_result=db.UpdateNutrientsCounters(FormateDate(),Meal.MealTotalCalories,Meal.VB12_COUNTER,Meal.PROTEIN_COUNTER,
                    Meal.SODIUM_COUNTER,Meal.IRON_COUNTER, Meal.CHOLESTEROL_COUNTER,Meal.FAT_SAT_COUNTER,Meal.FAT_MONO_COUNTER);
            if(st_result)
                Log.e("NCals counter update after intialize ","done ");
            else
                Log.e("NCals counter update after intialize","failure  ");      
        }
        else if(date.equals(FormateDate()))
        {
            boolean  st_result=db.UpdateNutrientsCounters(FormateDate(),Meal.MealTotalCalories,Meal.VB12_COUNTER,Meal.PROTEIN_COUNTER,
                    Meal.SODIUM_COUNTER,Meal.IRON_COUNTER, Meal.CHOLESTEROL_COUNTER,Meal.FAT_SAT_COUNTER,Meal.FAT_MONO_COUNTER);
            if(st_result)
                Log.e("NCals counter update","done ");
            else
                Log.e("NCals counter update","failure  ");  
        }  

        db.close();

检索方法

the retrieve method

public int getDNCalsCounter(String  date ) throws SQLException
        {   
            int NCals_CounterVal=0;
            Cursor cursor=db.query(true,TRACKER_TABLE_NAME, new String[]{KEY_DAILY_NCALS_COUNTER},  KEY_DATE+ " = '" + date + "'", null, null, null, null,null);
            if ( cursor .moveToFirst()) {
                NCals_CounterVal =cursor.getInt(cursor.getColumnIndex(KEY_DAILY_NCALS_COUNTER));

                  }
             cursor.close();
             cursor.deactivate();
            return NCals_CounterVal ;
        }   

在这里我使用检索方法，它会将计数器返回为零

Here where i use the retrieve method and it returns the counter as zero

remaining_cals_ToConsume_TV=(TextView)findViewById(R.id.RCTC_value);

     db = new DBAdapter(this);
    db.open();

    NCals_counter=db.getDNCalsCounter(FormatDate());
    Log.e("NCals_counter" ,NCals_counter +" ");
    determined_DNcals=StaticPreferences.getDailyNeededCals(this);
    Log.e("determined_DNcals" ,determined_DNcals +" ");
    RCals_ToConsume=determined_DNcals-NCals_counter;
    remaining_cals_ToConsume_TV.setText(RCals_ToConsume +" cal");
    db.close();

FormatDate方法

FormatDate method

private String  FormatDate()
	{   

		localCalendar = Calendar.getInstance();
		return new  SimpleDateFormat("EEEE, d/MMM/yyyy").format(localCalendar.getTime());

	}

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