Android 来自错误线程的域访问。在尝试使用spinnerlistener内部时，只能在创建的线程上访问领域对象

我有一个片段，我正在使用这样的领域

String selectedLang;
Realm realm;
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.user_profile, container, false);
        ButterKnife.bind(this, rootView);
        realm = Realm.getDefaultInstance();
        loginDatas = realm.where(LoginData.class).findFirst();
        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            selectedLang = langList.get(position);
//tried this, still not working, added runOnUiThread and that also didn't work
/*Realm realGuys = Realm.getDefaultInstance();
                realGuys.executeTransactionAsync(new Realm.Transaction() {
                    @Override
                    public void execute(Realm realm) {
                        loginDatas.getUser().setLanguage(selectedLang);
                        realm.insertOrUpdate(loginDatas);
                    }
                }, new Realm.Transaction.OnSuccess() {
                    @Override
                    public void onSuccess() {
                        FragmentTransaction ft = getFragmentManager().beginTransaction();
                        ft.detach(UserFragment.this).attach(UserFragment.this).commit();
                    }
                }, new Realm.Transaction.OnError() {
                    @Override
                    public void onError(Throwable error) {
                        error.printStackTrace();
                    }
                });*/
            realm.executeTransactionAsync(new Realm.Transaction() {
                @Override
                public void execute(Realm realm) {
//getting the exception below here
                    loginDatas.getUser().setLanguage(selectedLang);
                    realm.insertOrUpdate(loginDatas);
                }
            }, new Realm.Transaction.OnSuccess() {
                @Override
                public void onSuccess() {
                    FragmentTransaction ft = getFragmentManager().beginTransaction();
                    ft.detach(UserFragment.this).attach(UserFragment.this).commit();
                }
            }, new Realm.Transaction.OnError() {
                @Override
                public void onError(Throwable error) {
                    error.printStackTrace();
                }
            });
        }

        @Override
        public void onNothingSelected(AdapterView<?> parent) {
            selectedLang = langList.get(0);
        }
    });
}

---

有点像您不能在后台线程上访问UI线程视图，您也不能访问在不同线程上获得的RealmObjects

logindas

是从UI线程领域获得的，因此您无法在执行异步事务的后台线程上访问它。您必须从后台线程域中找到

logindas

，才能在后台线程中修改它

        realm.executeTransactionAsync(new Realm.Transaction() {
            @Override
            public void execute(Realm realm) {
                LoginData loginDatas = realm.where(LoginData.class).findFirst();
                loginDatas.getUser().setLanguage(selectedLang);
               // realm.insertOrUpdate(loginDatas);
            }

可能重复的

        realm.executeTransactionAsync(new Realm.Transaction() {
            @Override
            public void execute(Realm realm) {
                LoginData loginDatas = realm.where(LoginData.class).findFirst();
                loginDatas.getUser().setLanguage(selectedLang);
               // realm.insertOrUpdate(loginDatas);
            }