0

我正在使用带有 Cardview 的 Recycler View 并使用 Volley 显示来自 JSON 的数据。它在targetsdkversion 19上正常工作，但在targetsdkversion为26时不显示7个列表项后的数据。

            btnsend.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    chatLayout.setVisibility(View.VISIBLE);
                    subject = etsub.getText().toString();
                    details = etdetail.getText().toString();
                    if (etsub.getText().toString().equals("")) {
                        Toast.makeText(getActivity(), "Enter subject", Toast.LENGTH_SHORT).show();
                        subj_layout.setError("Plese Enter Subject!");
                    }
                    else if (etdetail.getText().toString().equals("")) {
                        detail_layout.setError("Please Enter Details!");
                    }
                    else {
                        Log.d(TAG, "onClick:send ");
                        String url = "http://webapi.eduware.in/test/api/ParentsCommunication?StudentCurrentID=" + studentId.trim() + "&SchoolID=" + schoolid.trim() + "&CommunicationSubject=" + subject.trim() + "&CommunicationDetails=" + details.trim();
                        Log.d(TAG, "onClick: " + url);
                        Log.d(TAG, "fetchNotificationByVolley: url = " + url);

                        StringRequest stringRequest = new StringRequest(Request.Method.POST, url,
                                new Response.Listener<String>() {
                                    @Override
                                    public void onResponse(String response) {
                                        Log.d(TAG, "onResponse: " + response);
                                        try {
                                            JSONObject jobj = new JSONObject(response);
                                            String status = jobj.getString("status");
                                            if (status.equals("1")) {
                                                Toast.makeText(getActivity(), "Successfully added", Toast.LENGTH_SHORT).show();
                                                getChatbyVolley();
                                                txtnocomm.setVisibility(View.GONE);

                                            } else {
                                                Toast.makeText(getActivity(), "Data not added", Toast.LENGTH_SHORT).show();
                                                chatLayout.setVisibility(View.VISIBLE);
                                            }
                                        } catch (JSONException e) {
                                            e.printStackTrace();
                                        }

                                    }
                                }, new Response.ErrorListener() {
                            @Override
                            public void onErrorResponse(VolleyError error) {
                                Log.d(TAG, "onErrorResponse: " + error.getMessage());
                            }
                        }) {
                            @Override
                            protected Map<String, String> getParams() throws AuthFailureError {
                                return null;
                            }
                        };

                        ApplicationController.getInstance().addToRequestQueue(stringRequest);

                        d.dismiss();
                    }
                }
            });

如图所示，单击右下角添加按钮打开一个自定义对话框，该 dislogs 编辑文本的详细信息将通过 getChatbyVolley 方法添加到 recyclerview。我已成功添加但未显示在列表中。但如果 targetsdkversion 为 18，则它完美无缺。

private void getChatbyVolley() {
    chatLayout.setVisibility(View.VISIBLE);
    String url = "http://webapi.eduware.in/test/api/ParentsCommunication?StudentCurrentID="+studentId.trim();
    final ArrayList<Chat> arrayList = new ArrayList<>();
    final ArrayList<String> array = new ArrayList<>();
    StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    Log.d(TAG, "onResponse: " + response);
                    try {
                        JSONObject jobj = new JSONObject(response);
                        String status = jobj.getString("status");
                        if(status.equals("1"))
                        {

                            JSONArray jsonArray = jobj.getJSONArray("data");

                            for(int i=0;i<jsonArray.length();i++)
                            {
                                JSONObject jsonObject = jsonArray.getJSONObject(i);
                                String date = jsonObject.getString("Date");
                                Log.d(TAG, "onResponse: "+date);
                                String[] separated = date.split("[T :]");
                                Log.d(TAG, "onResponse: splitted string0" + separated[0]);
                                Log.d(TAG, "onResponse: splitted string1" + separated[1]);
                                Log.d(TAG, "onResponse: splitted string2" + separated[2]);
                                Log.d(TAG, "onResponse: splitted string3" + separated[3]);
                                String time = separated[1] + ":" + separated[2];
                                Log.d(TAG, "onResponse: time is:::::::::::" + time);
                                DateFormat inputFormat = new SimpleDateFormat("yyyy-MM-dd");
                                DateFormat outputFormat = new SimpleDateFormat("dd MMM yyyy");
                                String inputDateStr=separated[0];
                                Date date1 = inputFormat.parse(inputDateStr);
                                String outputDateStr = outputFormat.format(date1);
                                String detail = jsonObject.getString("CommunicationDetails");
                                Log.d(TAG, "onResponse: details========="+detail);
                                String pid = jsonObject.getString("ParentID");
                                Log.d(TAG, "onResponse: pid is*********"+pid);
                                array.add(pid);
                                Log.d(TAG, "onResponse: pid is*********"+array);
                                editor.putString("parent_id",pid);
                                editor.putString("parentid_array",array.toString());
                                editor.commit();
                                Chat c = new Chat();
                                c.setCommsubject(jsonObject.getString("CommunicationSubject"));
                                c.setCommdetails(jsonObject.getString("CommunicationDetails"));
                                c.setDate(outputDateStr);
                                c.setParentid(pid);
                                arrayList.add(c);
                                progress.dismiss();

                            }
                            chatAdapter = new ChatAdapter(getActivity(), arrayList);
                            recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
                            recyclerView.setAdapter(chatAdapter);
                            recyclerView.setHasFixedSize(true);
                            chatAdapter.notifyDataSetChanged();

                            Log.d(TAG, "onResponse: " + arrayList.size());
                            progress.dismiss();
                        }
                        else
                        {
                            Toast.makeText(context, "No communication available", Toast.LENGTH_SHORT).show();
                            progress.dismiss();
                            rlnocomm.setVisibility(View.VISIBLE);
                            btnadd.setVisibility(View.VISIBLE);
                        }
                    } catch (JSONException e) {
                        e.printStackTrace();
                    } catch (ParseException e) {
                        e.printStackTrace();
                    }

                }
            }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            Log.d(TAG, "onErrorResponse: " + error.getMessage());
        }
    }) {
        @Override
        protected Map<String, String> getParams() throws AuthFailureError {
            return null;
        }
    };
    ApplicationController.getInstance().addToRequestQueue(stringRequest);

}
4

2 回答 2

0

在您的代码中添加以下行。这个对我有用

recyclerview.setHasFixedSize(true);
于 2018-08-12T07:49:20.540 回答
0

使用此代码并根据您的要求更改参数和输入文本和模型类

它对我有用...

public class YourActivity extends AppCompatActivity {
    private RecyclerView recyclerview;
    private RecyclerView.LayoutManager mLayoutManager;
    private ProgressDialog pdialog;
    RequestQueue requestQueue;
    private MyCustomAdapter myCustomAdapter;
    private ArrayList<DataFarmer> dataFarmers;
    private ArrayList<Datum> datumArrayList;

    public Datum datum;
    NewInsuranceList newInsuranceList;

    Context context;
    BankInfo bankInfo;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        recyclerview = (RecyclerView) findViewById(R.id.recycler_view_my_insurance);
        context = this;
        LinearLayoutManager layoutManager = new LinearLayoutManager(context);
        layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
        recyclerview.setLayoutManager(layoutManager);
        recyclerview.setHasFixedSize(true);

        initToolbar();
        doNormalPostOperation();
    }


    private void initToolbar() {
        Toolbar toolbar = (Toolbar) findViewById(R.id.mtoolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }

    public void doNormalPostOperation() {
        requestQueue = Volley.newRequestQueue(context);
        pdialog = new ProgressDialog(context);
        pdialog.setMessage("Loading");
        pdialog.show();

        StringRequest stringRequest = new StringRequest(Request.Method.POST, "YOUR_URL",
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        pdialog.dismiss();

                        Log.e("login output", response);

                        NewInsuranceListAll newInsuranceListAll = new GsonBuilder().create().fromJson(response, NewInsuranceListAll.class);
                        datumArrayList = newInsuranceListAll.getDatumArrayList();
                        myCustomAdapter = new MyCustomAdapter(datumArrayList);
                        recyclerview.setAdapter(myCustomAdapter);


                    }
                },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        pdialog.dismiss();
                        Toast.makeText(context, "Something went Wrong.. Please Try again..", Toast.LENGTH_SHORT).show();
                    }
                }) {
            @Override
            protected Map<String, String> getParams() {
                HashMap<String, String> map = new HashMap<String, String>();


                map.put("id", /*"1"*/PrefUtils.getUser(context).getData().get(0).getId());
                map.put("type", "get_insurance_list");
                Log.e("para", map + "");
                return map;
            }

        };

        requestQueue.add(stringRequest);

    }


    public class MyCustomAdapter extends RecyclerView.Adapter<MyCustomAdapter.MyViewHolder> {

        private ArrayList<Datum> moviesList;
        public class MyViewHolder extends RecyclerView.ViewHolder {
            public TextView farmer_name, aadhar_card, insurance_id, tagging_date, txtRepost;
            public ImageView farmer_image;
            CircleImageView circleImageViewProfile;
            ProgressBar simpleProgressBar;
            public Button btnViewMore;


            public MyViewHolder(View view) {
                super(view);

                farmer_name = view.findViewById(R.id.editText_farmer_name);
                aadhar_card = view.findViewById(R.id.agent_adhar_number);
                insurance_id = view.findViewById(R.id.insurance_id);
                tagging_date = view.findViewById(R.id.editText_Tagging_Date);
                circleImageViewProfile = view.findViewById(R.id.visit_profile_image);
                btnViewMore = view.findViewById(R.id.btnViewMore);

            }

        }


        public MyCustomAdapter(ArrayList<Datum> moviesList) {
            this.moviesList = moviesList;
        }

        @Override
        public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View itemView = LayoutInflater.from(parent.getContext())
                    .inflate(R.layout.layout_my_insurance, parent, false);

            return new MyViewHolder(itemView);
        }

        public void clear() {
            int size = this.moviesList.size();
            if (size > 0) {
                for (int i = 0; i < size; i++) {
                    this.moviesList.remove(0);
                }

                this.notifyItemRangeRemoved(0, size);
            }
        }

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


            final Datum datum = moviesList.get(position);

            holder.farmer_name.setText(datum.getFarmerName() + "  ");
            holder.aadhar_card.setText(datum.getFarmerAdhaar() + "  ");
            holder.insurance_id.setText(datum.getInsuranceNumber() + "  ");
            holder.tagging_date.setText(datum.getTaggingDate() + "  ");
            Picasso.with(MyInsuranceActivity.this).load("URL" + datum.getFarmerPhoto() + "").placeholder(R.drawable.profile_image).into(holder.circleImageViewProfile);

            holder.btnViewMore.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent viewMoreIntent = new Intent(context, ViewAllDetailsActivity.class);
                    viewMoreIntent.putExtra("farmer_id", moviesList.get(position).getFarmerId() + "");
                    Log.e("parasdasdas", moviesList.get(position).getFarmerId() + "");
                    startActivity(viewMoreIntent);
                }
            });
        }

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

    }
}
于 2018-12-26T09:16:01.053 回答