android - Recyclerview 不显示第一次项目

Question

我在应用程序中有回收器视图我在导航抽屉中使用回收器视图意味着当 reyclerview 为空时片段以及当我在回收器视图中添加不显示但在我刷新片段之后并且在我添加项目之后立即显示但不显示第一次为什么. 我被困住了。

这是我的代码-：

     @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable final ViewGroup container, @Nullable Bundle savedInstanceState) {
        inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        v = inflater.inflate(R.layout.activity_consultant_note_fragment, container, false);
        mSp = getActivity().getSharedPreferences(Constant.PREF, Context.MODE_PRIVATE);
        consulatantnoterecyclerView = v.findViewById(R.id.consulatantnote_display_recycler);
        swipeRefreshLayout = v.findViewById(R.id.swipeContainer);

        nodatafound = v.findViewById(R.id.nodatafound);
        // GetConsulatantNote();
        RecyclerView.LayoutManager manager = new LinearLayoutManager(getActivity());
        consulatantnoterecyclerView.setLayoutManager(manager);
        consulatantnoterecyclerView.setItemAnimator(new DefaultItemAnimator());

       return v;
    }

     void GetConsulatantNote() {
        dialog = new ProgressDialog(getActivity());
        dialog.show();
        if (!Utils.isInternetAvailable(getActivity(), true))
            return;

        final ApiInterface apiInterface = ApiClient.getClient().create(ApiInterface.class);

        ConsultantNote request = new ConsultantNote();
        request.setActionBy(Integer.valueOf(mSp.getString(Constant.ActionBy, "")));
        request.setInPatientID(Integer.valueOf(mSp.getString(Constant.InPatientID, "")));
        request.setToken(mSp.getString(Constant.TOKEN, ""));
        request.setCreatedBy(Integer.valueOf(mSp.getString(Constant.MasterUserID, "")));
        request.setIsActive(1);


        ServiceRequest serviceRequest = new ServiceRequest();
        serviceRequest.setOppID(**);
        serviceRequest.setParameters(request);

        Call<ConsultantNoteResponse> consultantNoteResponseCall = apiInterface.SaveConsulatantNote(serviceRequest);
        consultantNoteResponseCall.enqueue(new Callback<ConsultantNoteResponse>() {
            @Override
            public void onResponse(Call<ConsultantNoteResponse> call, Response<ConsultantNoteResponse> response) {

                if (response.body().getSuccess() == true && response.body().getValidated() == false) {
                    if (!response.body().getValidationErrors().isEmpty()) {
                        Nodatafound = true;
                        List<ValidationError> validationErrors = response.body().getValidationErrors();
                        for (int i = 0; i < validationErrors.size(); i++) {
                            ValidationError error = new ValidationError();
                            error.setErrorMessage(validationErrors.get(i).getErrorMessage());
                            Log.d("error", "" + validationErrors.get(i).getErrorMessage());
                        }
                        // Toast.makeText(DoctorCollection.this, "Records not found for opd", Toast.LENGTH_SHORT).show();
                    }
                    dialog.dismiss();
                }
                if (response.body().getSuccess() == true && response.body().getValidated() == true) {
                    //data
                    consultantNotes = new ArrayList<>();
                    consultantNotes.clear();
                    List<ConsultantNote> notes = response.body().getConsultantNotes();
                    consulatantnoterecyclerView.setVisibility(View.VISIBLE);
                    nodatafound.setVisibility(View.GONE);
                    for (int i = 0; i < notes.size(); i++) {

                        ConsultantNote note = new ConsultantNote();

                        note.setCreatedByUserFullName(notes.get(i).getCreatedByUserFullName());
                        note.setConsultantNotesDateTime(notes.get(i).getConsultantNotesDateTime());
                        note.setPatientProgress(notes.get(i).getPatientProgress());
                        note.setCreatedBy(notes.get(i).getCreatedBy());
                        note.setInPatientConsultantNoteID(notes.get(i).getInPatientConsultantNoteID());
                        note.setProblemsAndInterventions(notes.get(i).getProblemsAndInterventions());

                        consultantNotes.add(note);
                    }


                    //consulatantnoterecyclerView.setAdapter(consultantNoteAdpater);

                    setAdapterData(consultantNotes);
                    onItemDelete();
                    if (dialog.isShowing()) {
                        dialog.dismiss();
                    }
                }
                if (Nodatafound) {
                    consulatantnoterecyclerView.setVisibility(View.GONE);
                    nodatafound.setVisibility(View.VISIBLE);
                }

            }

            @Override
            public void onFailure(Call<ConsultantNoteResponse> call, Throwable t) {

            }
        });

        dialog.dismiss();
    }


  void onItemDelete() {

    final ConsultantNoteAdpater noteAdpater = new ConsultantNoteAdpater(context, consultantNotes);
    consulatantnoterecyclerView.setAdapter(noteAdpater);

    noteAdpater.setOnItemDeleteClickListener(new ConsultantNoteAdpater.OnItemClickDeleteListener() {
        @Override
        public void onItemClick(final int position, final Integer NoteId) {
            final AlertDialog.Builder innermsg = new AlertDialog.Builder(context);
            innermsg.setMessage("Are you sure you want to delete this consultant note ?");
            innermsg.setCancelable(false);
            innermsg.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {

                    consultantNotes.remove(position);
                    noteAdpater.notifyItemRemoved(position);
                    noteAdpater.notifyItemRangeChanged(position, consultantNotes.size());
                    DeleteConsulatantNote(NoteId);
                    noteAdpater.notifyDataSetChanged();
                    GetConsulatantNote();
                }
            });
            innermsg.setNegativeButton("cancle", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                }
            });
            innermsg.show();
        }


    });

}

private void setAdapterData(List<ConsultantNote> data) {
    if (data != null) {
        ArrayList<ConsultantNote> notes = new ArrayList<>();
        notes.clear();
        notes.addAll(consultantNotes);

        adapter = new ConsultantNoteAdpater(getActivity(), notes);
        adapter.notifyItemRangeChanged(0, consultantNotes.size());
        // adapter.notifyDataSetChanged();
        consulatantnoterecyclerView.setAdapter(adapter);


    }
}

这是我的recyclerview-的适配器代码：

public class ConsultantNoteAdpater extends RecyclerView.Adapter<ConsultantNoteAdpater.holder> {


LayoutInflater layoutInflater;
Context context;
List<ConsultantNote> consultantNotes;
private SharedPreferences mSp;
public OnItemClickDeleteListener onItemClickDeleteListener;

public ConsultantNoteAdpater(Context c, List<ConsultantNote> notes) {
    context = c;
    consultantNotes = notes;
    notifyDataSetChanged();
}

@NonNull
@Override
public holder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View v = layoutInflater.inflate(R.layout.activity_consultant_note_adpater, parent, false);
    mSp = context.getSharedPreferences(Constant.PREF, Context.MODE_PRIVATE);
    return new holder(v);
}

public interface OnItemClickDeleteListener {
    void onItemClick(int position, Integer NoteId);
}

public void setOnItemDeleteClickListener(OnItemClickDeleteListener onItemClickDeleteListener) {
    this.onItemClickDeleteListener = onItemClickDeleteListener;
}

@Override
public void onBindViewHolder(@NonNull holder holder, final int position) {

    final ConsultantNote note = consultantNotes.get(position);


    holder.createdby.setText(Html.fromHtml(createdby + "" + note.getCreatedByUserFullName()));


    holder.delete.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (onItemClickDeleteListener != null) {
                //get pateint consulatant note id
                onItemClickDeleteListener.onItemClick(position, note.getInPatientConsultantNoteID());
            }
        }
    });

}


@Override
public int getItemCount() {
    return consultantNotes.size();
}



class holder extends RecyclerView.ViewHolder {

    TextView date, createdby;
    ImageView delete;

    public holder(View itemView) {
        super(itemView);

        date = itemView.findViewById(R.id.consulatant_datetime);
        createdby = itemView.findViewById(R.id.consulatant_createdby);
        delete = itemView.findViewById(R.id.deleteconsultant);
    }
  }
}

我正在使用改造从 api 获取数据，所以如果有人可以提供帮助！

提前致谢！！！

标签： androidandroid-recyclerviewretrofit