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I'm using realm for my android apps, So I want to update my Bill object using the same Primary key, but ended with

FATAL EXCEPTION: main Process: com.example.rikirikmen.billsplit, PID: 22045 io.realm.exceptions.RealmPrimaryKeyConstraintException: Value already exists: 1

realm.executeTransaction(new Realm.Transaction() {                    @Override                    public void execute(Realm realm) {                        Bill updateBill = realm.where(Bill.class).equalTo("Bill_ID", bill).findFirst();                        DetailMenu menu = realm.createObject(DetailMenu.class);                        menu.setMenuID(MenuID);                        menu.setMenuName(String.valueOf(menuName.getText()));                        menu.setMenuPrice(Price);                        menu.setQuantity(Qty);                        for (int i = 0; i < adapter.getPersonMenuObjList().size(); i++) {                            PersonInMenu pim = realm.createObject(PersonInMenu.class);                            pim.setPersonID(adapter.getPersonMenuObjList().get(i).getPersonID());                            pim.setStatus(adapter.getPersonMenuObjList().get(i).isStatus());                            menu.personInMenus.add(pim);                        }                        updateBill.detailmenu.add(menu);                        realm.copyToRealmOrUpdate(updateBill);                    }                });

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asked

Jun 8 '16 at 14:35

156

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  what do you mean ? i need to createobject? the object already created in other activity before.. i just want to update the object. –  Jun 8 '16 at 15:07
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  what do you mean inside transaction ? actually realm has create a new method realm.executetransaction for replacing realm.begintransaction and commit –  Jun 8 '16 at 15:37

1 Answer

0 accepted

:

realm.executeTransaction(new Realm.Transaction() {                @Override                public void execute(Realm realm) {                    Bill updateBill = realm.where(Bill.class).equalTo("Bill_ID", bill).findFirst();                    DetailMenu menu = new DetailMenu();                    RealmList
      
        personInMenus = new RealmList<>(); //added line                    menu.personInMenus = personInMenus; //added line                    menu.setMenuID(MenuID);                    menu.setMenuName(String.valueOf(menuName.getText()));                    menu.setMenuPrice(Price);                    menu.setQuantity(Qty);                    for (int i = 0; i < adapter.getPersonMenuObjList().size(); i++) {                        PersonInMenu pim = new PersonInMenu();                        pim.setPersonID(adapter.getPersonMenuObjList().get(i).getPersonID());                        pim.setStatus(adapter.getPersonMenuObjList().get(i).isStatus());                        menu.personInMenus.add(pim);                    }                    updateBill.detailmenu.add(menu);                    realm.copyToRealmOrUpdate(updateBill);                }            });
      

Although if you're hesitant about saving detached objects to the Realm through copyToRealmOrUpdate(), then use the .

If you use createObject(clazz, primaryKey) then you won't need copyToRealmOrUpdate() in this case.

 

 

answered

Jun 8 '16 at 20:04

42k13115216

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  thankyou for your advice, actually i dont know its working or not.. i just got new error Process: com.example.rikirikmen.billsplit, PID: 31338 java.lang.NullPointerException: Attempt to invoke virtual method 'boolean io.realm.RealmList.add(io.realm.RealmModel)' on a null object reference at com.example.rikirikmen.billsplit.DialogActivity$1$1.execute(DialogActivity.java:101) –  Jun 11 '16 at 11:10
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  my object are filled, i dont know where is wrong. here is the log 06-11 18:02:56.785 31338-31338/com.example.rikirikmen.billsplit I/Object: 6 true 06-11 18:02:56.785 31338-31338/com.example.rikirikmen.billsplit I/Object: 7 true 06-11 18:02:56.785 31338-31338/com.example.rikirikmen.billsplit I/Object: 8 false 06-11 18:02:56.785 31338-31338/com.example.rikirikmen.billsplit I/Object: 9 false 06-11 18:02:56.785 31338-31338/com.example.rikirikmen.billsplit I/Object: 10 false –  Jun 11 '16 at 11:10
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  The personInMenus is null by default and I forgot to set it to be a RealmList<T>, added modified code –  Jun 11 '16 at 12:40
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  thankyou EpicPandaForce, you are Realm Master haha.. marked it as answer –  Jun 11 '16 at 13:08

  https://stackoverflow.com/questions/37705565/realm-update-failed-android