How to give a dialog box or IF-ELSE Condition if the the text or data you are saving is already exist in the SQLite db

Question

public static boolean CheckIsDataAlreadyInDBorNot(String TableName,
                                                      String dbfield, String fieldValue) {
        SQLiteDatabase sqldb = EGLifeStyleApplication.sqLiteDatabase;
        String Query = "Select * from " + TableName + " where " + dbfield + " = " + fieldValue;
        Cursor cursor = sqldb.rawQuery(Query, null);
        if(cursor.getCount() <= 0){
            cursor.close();
            return false;
        }
        cursor.close();
        return true;
    }