SQLite：嘗試重新打開一個已經關閉的對象

-1

我有導航抽屜，當我選擇第二個項目時，有時會看到一些關於嘗試重新打開已關閉對象的錯誤：SQLiteDatabase。SQLite：嘗試重新打開一個已經關閉的對象

我不知道如何解決這個問題

public void onCreate(Bundle savedInstanceState) 
{ 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    final String[] fragments ={"حذف تمامی پیام ها","ذخیره تمامی پیام ها"}; 
    mDrawerLayout = (DrawerLayout) findViewById(R.id.main_drawer_layout); 
    mDrawerList = (ListView) findViewById(R.id.main_drawer); 
    mDrawerList.setAdapter(new ArrayAdapter<String>(getActionBar().getThemedContext(),android.R.layout.simple_expandable_list_item_1, fragments)); 
    mDrawerList.setOnItemClickListener(new AdapterView.OnItemClickListener(){ 
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
      switch (position) 
      { 
       case 0: 
       { 
        final SQLiteDatabase mydatabase = openOrCreateDatabase("CopyCollection", MODE_PRIVATE, null); 
        mydatabase.execSQL("DELETE FROM Details;"); 
        mydatabase.close(); 
        myBrowser.loadUrl("javascript:fill_comment()"); 
        break; 
       } 
       case 1: 
       { 

        final SQLiteDatabase mydatabase1 = openOrCreateDatabase("CopyCollection", MODE_PRIVATE, null); 
        Cursor crs = mydatabase1.rawQuery("SELECT * FROM Groups;",null); 
        String[] array = new String[crs.getCount()]; 
        arrayID = new String[crs.getCount()]; 
        Count = crs.getCount(); 
        int i = 0; 
        while(crs.moveToNext()){ 
         String uname = crs.getString(crs.getColumnIndex("GroupName")); 
         String num = crs.getString(crs.getColumnIndex("ID")); 
         arrayID[i] = num; 
         array[i] = uname; 
         i++; 
        } 

        final AlertDialog.Builder builder = new AlertDialog.Builder(AndroidHTMLActivity.this); 
        builder.setTitle("گروه خود را انتخاب کنید"); 
        builder.setItems(array, new DialogInterface.OnClickListener() 
        { 
         public void onClick(final DialogInterface dialog, final int which) 
         { 
          if(which == 0) 
          { 
           if(Count == 4) 
           { 
            Toast.makeText(getApplicationContext(),"نسخه رایگان",Toast.LENGTH_SHORT).show(); 
           } 
           else if (Count < 4) 
           { 
            myBrowser.loadUrl("javascript:getCheckedBox()"); 
            AlertDialog.Builder alert = new AlertDialog.Builder(AndroidHTMLActivity.this); 
            alert.setTitle("گروه جدید"); 
            alert.setMessage("نام جدید را وارد کنید"); 
            final EditText input = new EditText(AndroidHTMLActivity.this); 
            input.setInputType(1); 
            alert.setView(input); 
            alert.setPositiveButton("تایید", new DialogInterface.OnClickListener() { 
             public void onClick(DialogInterface dialog, int whichButton) { 
              m_Text = input.getText().toString(); 
              mydatabase1.execSQL("INSERT INTO Groups (GroupName) VALUES('" + m_Text + "');"); 
              Cursor c3 = mydatabase1.rawQuery("SELECT * FROM Groups ORDER BY ID DESC LIMIT 1;", null); 
              while(c3.moveToNext()){ 
               int ID = c3.getInt(0); 
               LastDir = String.valueOf(ID); 
              } 
              for(int i=0; i<ArraySize; i++) 
              { 
               Cursor CDetails = mydatabase1.rawQuery("SELECT * FROM Details WHERE ID = "+CheckBoxes[i]+" ;", null); 
               if (CDetails.moveToFirst()) { 
                appName = CDetails.getString(1); 
                txtClip = CDetails.getString(2); 
                text_Date = CDetails.getString(3); 
               } 
               CDetails.close(); 
               if(i < 4) 
               { 
                mydatabase1.execSQL("INSERT INTO MainContent(AppName,Txt,GroupID,Time)VALUES('" + appName + "','" + txtClip + "','" + LastDir + "','" + text_Date + "');"); 
                mydatabase1.execSQL("DELETE FROM Details WHERE ID = " + CheckBoxes[i] + ";"); 
                mydatabase1.close(); 
               } 
               else 
               { 
                Toast.makeText(getApplicationContext(),"نسخه رایگان",Toast.LENGTH_SHORT).show(); 
                break; 
               } 
              } 
             } 
            }); 
            alert.setNegativeButton("انصراف", new DialogInterface.OnClickListener() { 
             public void onClick(DialogInterface dialog, int whichButton) { 
              myBrowser.post(new Runnable() 
              { 
               public void run() 
               { 
                myBrowser.loadUrl("javascript:fill_comment()"); 
               } 
              }); 
             } 
            }); 
            alert.show(); 
           } 
          } 
          else if(which > 0) 
          { 

          } 
         } 
        }); 
        builder.show(); 
        mydatabase1.close(); 
       } 
      } 
     } 
    }); 
}

來源

2015-04-18 Amir.KH

你能寫一個[MCVE]（http://stackoverflow.com/help/mcve）嗎？這裏有一點點太多的信息。限制問題：'SQLiteDatabase'。看看使用調試器，並檢查它打開（和關閉）的位置，然後看看是否有打開的數據庫連接。如果是這樣，你可能需要重新訂購你的代碼。 – JNYRanger

您case 1:

final SQLiteDatabase mydatabase1 = openOrCreateDatabase("CopyCollection", MODE_PRIVATE, null);

這是在case 1代碼塊結束時關閉。所以當你的對話框按鈕被點擊，你正在做 -

mydatabase1.execSQL("INSERT INTO Groups (GroupName) VALUES('" + m_Text + "');");

在這裏你得到的例外。 mydatabase1已關閉。您現在應該在onClick()內獲得一個新的參考。

來源

2015-04-19 10:58:12

SQLite：嘗試重新打開一個已經關閉的對象

回答

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