没有适配器连接；跳过布局：RecyclerView（带适配器）

Question

ListPetientFragment。JAVA

    public class ListPetientFragment extends Fragment {

    private String URLstring = "http://192.168.43.29:8080/emedical/list.php";
    private static ProgressDialog mProgressDialog;
    ArrayList<DataModel> dataModelArrayList;
    RvAdapter rvAdapter;
    RecyclerView recyclerView;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_list,container,false);
        recyclerView = (RecyclerView) v.findViewById(R.id.recycler);
        fetchingJSON();
        return v;
    }

    private void fetchingJSON() {

        StringRequest stringRequest = new StringRequest(Request.Method.GET, URLstring,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {

                        Log.d("strrrrr", ">>" + response);

                        try {
                            JSONObject obj = new JSONObject(response);
                            if(obj.optString("selected").equals("selected")){

                                dataModelArrayList = new ArrayList<>();
                                JSONArray dataArray  = obj.getJSONArray("code1");

                                for (int i = 0; i < dataArray.length(); i++) {

                                    DataModel playerModel = new DataModel();
                                    JSONObject dataobj = dataArray.getJSONObject(i);

                                    playerModel.setNames(dataobj.getString("names"));
                                    playerModel.setPhone(dataobj.getString("phoneNumber"));
                                    playerModel.setDisease(dataobj.getString("disease"));
                                    dataModelArrayList.add(playerModel);
                                }
                                setupRecycler();
                            }

                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }
                },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        //displaying the error in toast if occurrs
                        Toast.makeText(getActivity(), error.getMessage(), Toast.LENGTH_SHORT).show();
                    }
                });

        // request queue
        RequestQueue requestQueue = Volley.newRequestQueue(getActivity());

        requestQueue.add(stringRequest);

    }
    private void setupRecycler(){
        rvAdapter = new RvAdapter(getContext(),dataModelArrayList);
        rvAdapter.notifyDataSetChanged();
        recyclerView.setAdapter(rvAdapter);
        recyclerView.setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false));

    }

}

错误是：2021-11-17 18:41:02.417 29997-29997/？E/rtphonemedicat:运行时设置的未知位_标志：0x8000 2021-11-17 18:41:03.628 29997-30029/com。尼戈特。smartphonemedicate E/GED:无法获取GED日志Buf，错误（0）2021-11-17 18:41:03.698 29997-30029/com。尼戈特。smartphonemedicate E/ion:ioctl c0044901失败，代码为-1:无效html" target="_blank">参数2021-11-17 18:41:13.899 29997-29997/com。尼戈特。smartphonemedicate E/RecyclerView：未连接适配器；跳过布局

提前感谢！！！

Answer 1

在将适配器设置为回收视图之前不要通知数据集

private void setupRecycler(){
        rvAdapter = new RvAdapter(getContext(),dataModelArrayList);
        rvAdapter.notifyDataSetChanged(); //remove this line
        recyclerView.setAdapter(rvAdapter);
        recyclerView.setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false));

    }

更新此功能

private void setupRecycler(){
            recyclerView.setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false));
            rvAdapter = new RvAdapter(getContext(),dataModelArrayList);
            recyclerView.setAdapter(rvAdapter);
    
        }