远程领域（在领域对象服务器上）发生变化时不通知片段

Question

当我启动Android应用程序时，登录到Realm Object Server并从Realm Server Object下载（同步）数据。好的。 现在我到了显示人员列表的片段。

下面的代码：

public class PersonsFragment extends Fragment { 
    private ListView notEmptytsListView; 
    private Realm realm; 
    private RealmResults<Person> personsRealmResults; 
    private PersonsAdapter personsAdapter; // RealmBaseAdapter<Organization> 
    private RealmChangeListener realmChangeListener; 

    @Nullable 
    @Override 
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 
     View rootView = inflater.inflate(R.layout.persons_fragment, container, false); 
     init(rootView); 
     return rootView; 
    } 

    private void init(View view) { 
     realm = Realm.getDefaultInstance(); 
     notEmptytsListView = (ListView) view.findViewById(R.id.notEmptytsListView); 
     personsRealmResults = realm.where(Person.class).findAllSorted(Person.NAME); 
     personsAdapter = new PersonsAdapter(personsRealmResults); 
     notEmptytsListView.setAdapter(personsAdapter); 

     // NOT CALL WHEN DATA ON REALM OBJECT SERVER WAS CHANGED 
     realmChangeListener = new RealmChangeListener() { 
      @Override 
      public void onChange(Object object) { 
       personsAdapter.notifyDataSetChanged(); 
      } 
     }; 
     personsRealmResults.addChangeListener(realmChangeListener); 
    } 

    @Override 
    public void onDestroy() { 
     super.onDestroy(); 
     realm.removeChangeListener(realmChangeListener); 
     realm.close(); 
    } 
} 

如果我留在片段和数据变化领域对象服务器（远程域）的本地数据不同步的。不调用方法onChanged（）。

我该如何解决这个问题？

Answer 1

public class MyFragment extends Fragment {  
    RealmResults<Person> personsRealmResults; // <-- 

    @Nullable 
    @Override 
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 
     View rootView = inflater.inflate(R.layout.persons_fragment, container, false); 
     notEmptytsListView = (ListView) view.findViewById(R.id.notEmptytsListView); 

     realm = Realm.getDefaultInstance(); 
     personsRealmResults = realm.where(Person.class).findAllSorted(Person.NAME); 
     personsAdapter = new PersonsAdapter(personsRealmResults); 
     notEmptytsListView.setAdapter(personsAdapter); 

     realmChangeListener = new RealmChangeListener() { 
      @Override 
      public void onChange(Object object) { 
       // call when data on Realm Object Server was changed 
     } 
     }; 
     personsRealmResults.addChangeListener(realmChangeListener); 
     return rootView; 
    } 

    @Override 
    public void onDestroyView() { 
     super.onDestroyView(); 
     realm.removeChangeListener(realmChangeListener); 
     realm.close(); 
    } 
} 

虽然它很可能更容易，如果PersonsAdapter是一个RealmBaseAdapter。 （请参阅docs）