我試圖通過profile.setClientName("Name");從Observer<T>'onChanged事件調用來更新我的 EditText 中的值，但 EditText 不反映更改。onCreateView如果從我的片段中調用上述代碼行，則 EditText 會更新。這是我的代碼：ClientProfileFragment.javapublic class ClientProfileFragment extends Fragment implements View.OnClickListener {    private ClientProfile profile; //The BaseObservable     private CPViewModel mViewModel;    @Override    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,                         @Nullable Bundle savedInstanceState) {        ...        ClientProfileFragmentBinding binding = DataBindingUtil.inflate(inflater,            R.layout.client_profile_fragment, container, false);        clientProfileView = binding.getRoot();        profile = new ClientProfile();        binding.setClientprofile(profile);        final Observer<ClientProfile> clientProfileObserver = new Observer<ClientProfile>() {            @Override            public void onChanged(ClientProfile clientProfile) {            profile.setClientName("Name"); //This line gets executed. Confirmed.            }        };        mViewModel.getClientProfile().observe(this, clientProfileObserver);        //If I call profile.setClientName("Name"); from here then the corresponding        //EditText changes to "Name".        return clientProfileView;    }    @Override    public void onClick(View v) {        customerFindFuture.then(new FutureCallback<Response<String>>() {            @Override            public void onCompleted(Exception e, Response<String> result) {                Gson gson = new GsonBuilder().serializeNulls().create();                ClientProfileWrapper clientProfileWrapper =                            gson.fromJson(result.getResult(), ClientProfileWrapper.class);                profile = clientProfileWrapper.getData().get(0);                mViewModel.getClientProfile().setValue(profile);                }            }        }    }}