copyToRealm複製一個空列表而不是填充的一個

Question

我有一個名爲「Encounter」的RealmObject，其中包含一個名爲「SavedCombatant」的其他RealmObjects的RealmList。在我的代碼中，我使用適當的對象填充RealmList，但是當我提交事務並稍後檢索Encounter-Object時，RealmList爲空。

我有以下代碼

public void saveEncounter(){ 

     //create a new key for the encounter 
     int key = 0; 
     if(mRealm.where(Encounter.class).count() != 0) { 
      RealmResults<Encounter> encounters = mRealm.where(Encounter.class).findAll(); 
      Encounter encounter = encounters.last(); 
      key = encounter != null ? encounter.getKey() + 1 : 0; 
     } 

     // retrieve the data to populate the realmlist with 
     // combatants has 1 element 
     List<SavedCombatant> combatants = mAdapter.getCombatants(); 
     mRealm.beginTransaction(); 
     Encounter e = mRealm.createObject(Encounter.class); 
     e.setKey(key); 
     e.setTitle(txtTitle.getText().toString()); 
     RealmList<SavedCombatant> combatantRealmList = new RealmList<>(); 
     for (int i = 0; i < combatants.size(); i++) { 
      combatantRealmList.add(combatants.get(i));  
     } 
     //combatantRealmList also has 1 element. setCombatants is a 
     //generated Setter with a couple bits of additional logic in it 
     e.setCombatants(combatantRealmList); 
     mRealm.copyToRealm(e); 
     mRealm.commitTransaction(); 
} 

這將是我遇到類

public class Encounter extends RealmObject { 

    private int key; 
    private String title; 
    private RealmList<SavedCombatant> combatants; 

    @Ignore 
    private String contents; 

    public void setCombatants(RealmList<SavedCombatant> combatants) { 
     //simple setter 
     this.combatants = combatants; 

     //generate summary of the elements in my realmlist. (probably inefficient as hell, but that's not part of the problem) 
     HashMap<String, Integer> countMap = new HashMap<>(); 
     for (int i = 0; i < combatants.size(); ++i) { 
      String name = combatants.get(i).getName(); 
      int countUp = 1; 
      if (countMap.containsKey(name)) { 
       countUp = countMap.get(name) + 1; 
       countMap.remove(name); 
      } 
      countMap.put(name, countUp); 
     } 
     contents = ""; 
     Object[] keys = countMap.keySet().toArray(); 
     for (int i = 0; i < keys.length; ++i) { 
      contents += countMap.get(keys[i]) + "x " + keys[i]; 
      if (i + 1 < keys.length) 
       contents += "\r\n"; 
     } 
    } 

    // here be more code, just a bunch of getters/setters 
} 

用於RealmList類具有以下標題（如驗證我使用的是RealmObject這裏也是）

public class SavedCombatant extends RealmObject 

Answer 1

事實證明，你需要明確地保存對象裏面的Re almList。

我需要我的SavedCombatant對象複製到裏面的境界我對循環使用

mRealm.copyToRealm(combatants.get(i));