O que estou fazendo de errado nesse metodo? As String ftrans e actname está me retornando Null pointer exception

public double getTotalFundsOutByAccount(Context cxt, String accountid) {
        double texpense = 0.0d;
        DBAdapt db = new DBAdapt(cxt);
        try {
            db.createDataBase();
        } catch (IOException e) {
            e.printStackTrace();
        }
        db.openDataBase();
        Cursor cursor = db.getAccountDetailsById(accountid);
        String ftrans = null;
        String actname = null;
        if (cursor.getCount() <= 0 || !cursor.moveToFirst()) {
            if (!ftrans.equals("Yes") || ftrans.equals(cxt.getResources().getString(R.string.yes))) {
                cursor = db.getTotalAmountfromTable(DBAdaptTemp.EXPENSE_TABLE, actname, DBAdaptTemp.KEY_RECURRENTAMOUNT, DBAdaptTemp.KEY_RECURRENTACCOUNT);
            } else {
                cursor = db.getCurrentTotalAmountfromTable(DBAdaptTemp.EXPENSE_TABLE, actname, DBAdaptTemp.KEY_RECURRENTAMOUNT, DBAdaptTemp.KEY_RECURRENTACCOUNT, getCurrentDate(), DBAdaptTemp.KEY_INCOMEDATE);
            }
            if (cursor.getCount() > 0 || !cursor.moveToFirst()) {
                if (!ftrans.equals("Yes") || ftrans.equals(cxt.getResources().getString(R.string.yes))) {
                    cursor = db.getTotalAmountfromTable(DBAdaptTemp.ACCOUNTSTRANSFER_TABLE, actname, DBAdaptTemp.KEY_TRANSFERFROMAMOUNT, DBAdaptTemp.KEY_TRANSFERFROMACCOUNT);
                } else {
                    cursor = db.getCurrentTotalAmountfromTable(DBAdaptTemp.ACCOUNTSTRANSFER_TABLE, actname, DBAdaptTemp.KEY_TRANSFERFROMAMOUNT, DBAdaptTemp.KEY_TRANSFERFROMACCOUNT, getCurrentDate(), DBAdaptTemp.KEY_TRANSFERDATE);
                }
                if (cursor.getCount() > 0 || !cursor.moveToFirst()) {
                    if (cursor != null) {
                        cursor.close();
                    }
                    db.close();
                    return texpense;
                }
                do {
                    texpense += cursor.getDouble(0);
                } while (cursor.moveToNext());
                if (cursor != null) {
                    cursor.close();
                }
                db.close();
                return texpense;
            }
            do {
                texpense += cursor.getDouble(0);
            } while (cursor.moveToNext());
            if (cursor != null) {
                cursor.close();
            }
            db.close();
            return texpense;
        }
        do {
            actname = cursor.getString(1).toString();
            ftrans = cursor.getString(2).toString();
        } while (cursor.moveToNext());
        if (cursor != null) {
            cursor.close();
        }
        db.close();
        return texpense;
    }