CalendarEntry.java에서 줄번호 152,153,154 3행을 밑의 1행으로 변경 mDB.insert(Pets.PETS_TABLE_NAME, null, petRecordToAdd); ※ nullColumnHack : SQL doesn't allow inserting a completely empty row, so if initialValues is empty this column will explicitly be assigned a NULL value
mDB.insert(Pets.PETS_TABLE_NAME, null, petRecordToAdd);
※ nullColumnHack : SQL doesn't allow inserting a completely empty row, so if initialValues is empty this column will explicitly be assigned a NULL value