staggeredgridlayoutmanager在android中刷新后不显示项目

Question

在我的RecyclerView中，我使用StaggeredLayoutManager显示项目，但是当使用RefrefreshLAyout进行刷新时，但稍后刷新不会显示项目，直到在recyclerview中滚动时，这是代码的一部分。

public class NotesListFragment extends Fragment 
    implements SwipeRefreshLayout.OnRefreshListener, OnInternetListener, OnTapInternetDialogListener { 

    private SwipeRefreshLayout notesListRefreshLayout = null; 
    private ListRecyclerView notesListRecyclerView = null; 
    private NotesAdapter notesAdapter = null; 
    private List<Note> notes = null; 

    public NotesListFragment() { 
    // Required empty public constructor 
    } 

    public static NotesListFragment newInstance() { 
    NotesListFragment fragment = new NotesListFragment(); 
    return fragment; 
    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 
    return inflater.inflate(R.layout.fragment_notes_list, container, false); 
    } 

    @Override 
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { 
    super.onViewCreated(view, savedInstanceState); 
    notesListRefreshLayout = (SwipeRefreshLayout) view.findViewById(R.id.notesListRefreshLayout); 
    notesListRefreshLayout.setOnRefreshListener(this); 
    notesListRecyclerView = (ListRecyclerView) view.findViewById(R.id.notesListRecyclerView); 
    initObjects(); 
    showNotes(notes); 
    } 

    private void initObjects() { 
    notesListRecyclerView.setHasFixedSize(true); 
    if (isTablet) { 
     if (((BaseActivityCompat) getActivity()).getOrientationDevice() == OrientationDevice.LANDSCAPE) { 
     final StaggeredGridLayoutManager manager = new StaggeredGridLayoutManager(3, StaggeredGridLayoutManager.VERTICAL); 
     notesListRecyclerView.setLayoutManager(manager); 
     notesListRecyclerView.addItemDecoration(new SpaceGridDecoration(3, 20, true)); 
     } else { 
     final StaggeredGridLayoutManager manager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL); 
     notesListRecyclerView.setLayoutManager(manager); 
     notesListRecyclerView.addItemDecoration(new SpaceGridDecoration(2, 20, true)); 
     } 
    } else { 
     final StaggeredGridLayoutManager manager = new StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.VERTICAL); 
     notesListRecyclerView.setLayoutManager(manager); 
    } 
    } 

    private void showNotes(List<Note> notes) { 
    if (notesAdapter == null) { 
     notesAdapter = new NotesAdapter(getContext(), notes, advertising, 
     advertisingList, (AppCompatActivity) getActivity(), AdvertisingSection.HOME.getSection()); 
     notesListRecyclerView.setAdapter(notesAdapter); 
     notesAdapter.setOnNoteItemClickListener(onNoteItemClickListener); 
     notesAdapter.setOnNoteActionClickListener(onNoteActionClickListener); 
    } else { 
     notesAdapter.setUpdate(true); 
     notesAdapter.refreshAdapter(notes); 
     notesListRecyclerView.setAdapter(notesAdapter); 
    } 
    } 

    public void onRefresh() { 
    obtainNotesHome(true); 
    } 
} 

后来与RefreshLayout刷新实现展览面积空当我做滚动与staggeredlayoutmanager recyclerview的项目展示。

Answer 1

我认为你的代码没有问题。尝试使用占位符图像。它对我有用。