Android Can'；没有数据时，在SwiperFresh布局中滑动

我正在我的应用程序中使用带有

SwipeRefreshLayout

的RecyclerView。问题是，当我的RecyclerView有数据时，我可以滑动布局。但当RecyclerView中没有数据时，我就不能刷卡

谁能解决这个问题

 public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.student_fragment_tutorial_upcoming, container, false);

    tvNoData = (TextView) view.findViewById(R.id.tvNoData);

    bdn = getArguments();
    year = bdn.getString(TutorialStudentFragment.YEARNAME);

    Toast.makeText(getContext(), year, Toast.LENGTH_SHORT).show();

    networkUtil = new NetworkUtil();
    conStatus = networkUtil.getConnectivityStatusString(getContext());

    mdbHelper = new DatabaseHelper(getContext());
    copyData = new CopyDatabase(getContext());

    recyclerTutorial = (RecyclerView) view.findViewById(R.id.recyclerTutorial);

    swipeRefreshLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipelayoutTutorial);
    swipeRefreshLayout.setColorSchemeResources(R.color.blue, R.color.orange, R.color.green);

    if (conStatus.equals("wifi") || conStatus.equals("mobile_data")) {
        onRefresh();

    } else {
        //swipeRefreshLayout.setRefreshing(true);
        swipeRefreshLayout.post(new Runnable() {
            @Override
            public void run() {
                if (mdbHelper.getAllTutorialInfo(year, tutorialType).size() == 0) {
                    tvNoData.setText("There is no upcoming tutorial for now");
                    tvNoData.setVisibility(View.VISIBLE);
                } else {
                    tvNoData.setVisibility(View.INVISIBLE);
                    loadTutorialCard(mdbHelper.getAllTutorialInfo(year, tutorialType));
                }
                //swipeRefreshLayout.setRefreshing(false);
            }
        });
    }

    RecyclerView.LayoutManager mLayoutManager = new GridLayoutManager(getContext(), 1);
    recyclerTutorial.setLayoutManager(mLayoutManager);
    recyclerTutorial.addItemDecoration(new GridSpacingItemDecoration(1, dpToPx(10), true));
    recyclerTutorial.setItemAnimator(new DefaultItemAnimator());
    Animation fadeIn = AnimationUtils.loadAnimation(getContext(), R.anim.fade_in);
    Animation fadeOut = AnimationUtils.loadAnimation(getContext(), R.anim.fade_out);
    recyclerTutorial.setAnimation(fadeIn);

    recyclerTutorial.addOnItemTouchListener(new RecyclerTouchListener(getContext(), recyclerTutorial, new RecyclerTouchListener.ClickListener() {
        @Override
        public void onClick(View view, int position) {
           /* tutorialArrayList = mdbHelper.getAllTutorialInfo(year);
            Tutorial tutorial = tutorialArrayList.get(position);
            Bundle bdn = new Bundle();*/
            Toast.makeText(getContext(), position + " clicked", Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onLongClick(View view, int position) {

        }
    }));

    swipeRefreshLayout.setOnRefreshListener(this);


    return view;
}



 public void getTutorialData() {
    swipeRefreshLayout.setRefreshing(true);
    networkUtil = new NetworkUtil();
    conStatus = networkUtil.getConnectivityStatusString(getContext());
    if (conStatus.equals("wifi") || conStatus.equals("mobile_data")) {
        StringRequest stringRequest = new StringRequest(Request.Method.POST, select_tutorial_url,
                new Response.Listener<String>() {
                    ArrayList<Tutorial> tutorialArrayList = new ArrayList<>();

                    @Override
                    public void onResponse(String response) {
                        int count = 0;
                        if (response.length() > 0) {
                            while (count < response.length()) {
                                try {
                                    JSONArray jsonArray = new JSONArray(response);
                                    JSONObject jsonObject = jsonArray.getJSONObject(count);
                                    int id = Integer.parseInt(jsonObject.getString("id"));
                                    // String codeStatus =jsonObject.getString("code");
                                    Tutorial tutorial = new Tutorial(id, jsonObject.getString("class_name"), jsonObject.getString("subject"), jsonObject.getString("lesson"), jsonObject.getString("exam_date"), jsonObject.getString("exam_time"), jsonObject.getString("published"));
                                    if (checkTutorialListWithDate(tutorial)) {
                                        tutorialArrayList.add(tutorial);
                                    }

                                    Log.i("Class :", tutorial.getsClass());
                                    Log.i("Subject :", tutorial.getSubject());
                                    Log.i("Lesson :", tutorial.getLesson());

                                } catch (JSONException e) {
                                    e.printStackTrace();
                                }
                                count++;
                            }
                        } else {
                            Toast.makeText(getContext(), String.valueOf(response.length()), Toast.LENGTH_SHORT).show();
                        }
                        swipeRefreshLayout.setRefreshing(false);

                        loadTutorialCard(tutorialArrayList);
                        if (tutorialArrayList.size() == 0) {
                            tvNoData.setVisibility(View.VISIBLE);
                            tvNoData.setText("There is no upcoming tutorial for now");
                        } else {
                            tvNoData.setVisibility(View.INVISIBLE);
                        }

                        workingWithLocalDatabase(tutorialArrayList, mdbHelper.getAllTutorialInfo(year, tutorialType));
                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                swipeRefreshLayout.setRefreshing(false);
                NetworkUtil.checkInternetConnection(error, getContext(), swipeRefreshLayout);
            }
        }
        ) {
            @Override
            protected Map<String, String> getParams() throws AuthFailureError {
                Map<String, String> params = new HashMap<String, String>();
                params.put("studentYear", year);
                return params;
            }
        };
        Mysingleton.getInstance(getContext()).addToRequestque(stringRequest);
    } else {
        swipeRefreshLayout.setRefreshing(false);
        networkUtil.showNetError(getContext(), swipeRefreshLayout);
    }
}

public void onRefresh() {
    getTutorialData();
}

public View onCreateView（布局、充气机、视图组容器、，
Bundle savedInstanceState）{
视图=充气机。充气（R.layout.student\u fragment\u tutorial\u container，false）；
tvNoData=（TextView）view.findViewById（R.id.tvNoData）；
bdn=getArguments（）；
year=bdn.getString（TutorialStudentFragment.name）；
Toast.makeText（getContext（），year，Toast.LENGTH_SHORT）.show（）；
networkUtil=新的networkUtil（）；
conStatus=networkUtil.getConnectivityStatusString（getContext（））；
mdbHelper=新数据库助手（getContext（））；
copyData=新的CopyDatabase（getContext（））；
recyclerTutorial=（RecyclerView）view.findViewById（R.id.recyclerTutorial）；
swipeRefreshLayout=（swipeRefreshLayout）view.findViewById（R.id.swipelayoutTutorial）；
swipeRefreshLayout.setColorSchemeResources（R.color.blue、R.color.orange、R.color.green）；
if（conStatus.equals（“wifi”）| | conStatus.equals（“移动_数据”））{
onRefresh（）；
}否则{
//swipeRefreshLayout.setRefreshing（true）；
swipeRefreshLayout.post（新的Runnable（）{
@凌驾
公开募捐{
if（mdbHelper.getAllTutorialInfo（年份，tutorialType）.size（）=0）{
setText（“目前还没有即将推出的教程”）；
设置可见性（View.VISIBLE）；
}否则{
设置可见性（视图不可见）；
loadTutorialCard（mdbHelper.getAllTutorialInfo（年份，tutorialType））；
}
//swipeRefreshLayout.setRefreshing（false）；
}
});
}
RecycleView.LayoutManager mLayoutManager=新的GridLayoutManager（getContext（），1）；
RecyclerAutorial.setLayoutManager（mLayoutManager）；
RecyclerAutorial.addItemDecoration（新的GridSpacingItemDecoration（1，dpToPx（10），真））；
setItemAnimator（新的DefaultItemAnimator（））；
Animation fadeIn=AnimationUtils.loadAnimation（getContext（），R.anim.fade_-in）；
Animation fadeOut=AnimationUtils.loadAnimation（getContext（），R.anim.fade_）；
设置动画（fadeIn）；
AddOnItemToucListener（新的RecyclerToucListener（getContext（），RecyclerToUrial，新的RecyclerToucListener.ClickListener（））{
@凌驾
公共void onClick（视图，int位置）{
/*tutorialArrayList=mdbHelper.getAllTutorialInfo（年）；
Tutorial Tutorial=tutorialArrayList.get（位置）；
Bundle bdn=新Bundle（）*/
Toast.makeText（getContext（），position+“clicked”，Toast.LENGTH_SHORT.show（）；
}
@凌驾
仅长按公共无效（视图，int位置）{
}
}));
swipeRefreshLayout.setOnRefreshListener（此）；
返回视图；
}
public void getTutorialData（）{
swipeRefreshLayout.setRefreshing（true）；
networkUtil=新的networkUtil（）；
conStatus=networkUtil.getConnectivityStatusString（getContext（））；
if（conStatus.equals（“wifi”）| | conStatus.equals（“移动_数据”））{
StringRequest StringRequest=新建StringRequest（Request.Method.POST，选择教程\u url，
新的Response.Listener（）{
ArrayList教程ArrayList=新建ArrayList（）；
@凌驾
公共void onResponse（字符串响应）{
整数计数=0；
if（response.length（）>0）{
while（count