代碼名一個SQLite數據問題

Question

我正在Codename一個SQLite項目上工作，雖然我收到了一些問題，我試圖當我點擊日曆上的某個特定日期，然後它會檢查數據庫中是否存在該日期或者不是，但是當我在應用程序啓動後首先點擊某個特定日期時，它會準確發生該日期，但在第二次時，它會將上一個日期事件添加到當前日期事件中，並顯示該事件的總和。那我該如何解決呢？

下面是我的代碼： -

public class Customised extends Calendar{ 
     ArrayList<String[]> data = new ArrayList<>(); 



     public Customised(){ 

    } 

    @Override 
    protected void updateButtonDayDate(Button dayButton, int currentMonth, int day) { 
      dayButton.setText(""+day); 
     dayButton.addActionListener(new ActionListener() { 
      @Override 
      public void actionPerformed(ActionEvent evt) { 

       try{ 
     cur = db.executeQuery("SELECT Date from CalendarData WHERE Date = ? ", dateLabel.getText()); 
     int columns = cur.getColumnCount(); 
         if(columns > 0) { 
        boolean next = cur.next(); 
        if(next) { 

         String[] columnNames = new String[columns]; 
         for(int iter = 0 ; iter < columns ; iter++) { 
          columnNames[iter] = cur.getColumnName(iter); 
         } 
         while(next) { 
          Row currentRow = cur.getRow(); 
          String[] currentRowArray = new String[columns]; 
          for(int iter = 0 ; iter < columns ; iter++) { 
           currentRowArray[iter] = currentRow.getString(iter); 
          } 
          data.add(currentRowArray); 
          next = cur.next(); 
         } 
         Object[][] arr = new Object[data.size()][]; 
         data.toArray(arr); 
        } 
         } 
      }catch(IOException e){ 
       e.printStackTrace(); 
      } 
       int i; 
       for(i = 0 ; i< data.size(); i++){ 
        Log.p(data.get(i)[0]); 
       } 
       Label a = new Label(dateLabel.getText()); 
       Label b = new Label(""+i); 
       Container container1 = TableLayout.encloseIn(2, a,b); 
       calendar.add(container1); 
       Util.cleanup(data); 

       // dayButton.getAllStyles().setBgColor(0xef5555); 
    // dayButton.setText("* "+day); 

      }  
     }); 
    } 

    @Override 
    protected Button createDay() { 
     Button day = new Button(); 
     day.setAlignment(CENTER); 
     day.setUIID("CalendarDay"); 
     day.setEndsWith3Points(false); 
     day.setTickerEnabled(false); 
     return day; 
    } 
    } 

} 

Answer 1

我得到的回答了這個問題： -

@Override 
protected void updateButtonDayDate(Button dayButton, int currentMonth, int day) { 

     dayButton.setText(""+day); 
    dayButton.addActionListener(new ActionListener() { 
     @Override 
     public void actionPerformed(ActionEvent evt) { 

      try{ 
    cur = db.executeQuery("SELECT Date from CalendarData WHERE Date = ? ", dateLabel.getText()); 
    int columns = cur.getColumnCount(); 
        if(columns > 0) { 
       boolean next = cur.next(); 
       if(next) { 

        String[] columnNames = new String[columns]; 
        for(int iter = 0 ; iter < columns ; iter++) { 
         columnNames[iter] = cur.getColumnName(iter); 
        } 
        while(next) { 
         Row currentRow = cur.getRow(); 
         String[] currentRowArray = new String[columns]; 
         for(int iter = 0 ; iter < columns ; iter++) { 
          currentRowArray[iter] = currentRow.getString(iter); 
         } 
         data.add(currentRowArray); 
         next = cur.next(); 
        } 
        Object[][] arr = new Object[data.size()][]; 
        data.toArray(arr); 
       } 
        } 
     }catch(IOException e){ 
      e.printStackTrace(); 
     } 

      for(i = 0 ; i< data.size(); i++){ 
       Log.p(data.get(i)[0]); 
      } 
      Label a = new Label(dateLabel.getText()); 
      Label b = new Label(""+i); 

      Container container1 = TableLayout.encloseIn(2, a,b); 
      if(calendar.contains(container1)== true){ 
       calendar.removeComponent(container1); 
      calendar.add(container1); 
      }else{ 
       calendar.add(container1); 
      } 

      data.clear(); 

      // dayButton.getAllStyles().setBgColor(0xef5555); 
// dayButton.setText("* "+day); 

     }  
    }); 
} 

並感謝響應。