public void upDateUser(int money)
    {
        String selectQuery = "SELECT " + KEY_CREDITS + " from " +
                                  DATABASE_TABLE + " where " + KEY_ROWID + " = " + 0;
        Cursor c = ourDatabase.rawQuery(selectQuery, null);
        int oldMoney = 0;
        if (c.moveToFirst())
        {
             oldMoney = oldMoney + Integer.parseInt(c.getString(4));
        }
        ContentValues cvUpdate = new ContentValues();
        cvUpdate.put(KEY_CREDITS, (oldMoney + money));
        ourDatabase.update(DATABASE_TABLE, cvUpdate, null, null);
    }

public void upDateUser(int money)
{
    String selectQuery = "SELECT " + KEY_CREDITS + " from " +
                              DATABASE_TABLE + " where " + KEY_ROWID + " = " + 1;
    Cursor c = ourDatabase.rawQuery(selectQuery, null);
    int oldMoney = 0;
    Log.d("com.example.yourapp", c.getCount() + " rows selected");
    if (c.moveToFirst())
    {
         oldMoney = c.getInt(c.getColumnIndex(KEY_CREDITS));
    }
    ContentValues cvUpdate = new ContentValues();
    cvUpdate.put(KEY_CREDITS, (oldMoney + money));
    ourDatabase.update(DATABASE_TABLE, cvUpdate, KEY_ROWID + "=?" ,new String[] { "1" });
}