Develop Reference

onPostExecute() seems to be called only once

I've created class which extends AsyncTask, to synchronize with service. After synchro is finished I want to put the time (hh:mm) into TextView, to inform user, when synchro was made last time. I am doing it inside onPostExecute().
Problem is that this happens only once. TextView doesn't get updated later.
I'm prettey sure doInBackground() is being called because it takes quite a long time to synchronize just like when application starts (there is a lot of records), but I can't be 100% sure since data collection doesn't change at all.
That's my AsyncTask class:
private class Reconnect extends AsyncTask<String, Void, Void>{
private RotateAnimation anim = new RotateAnimation(0f, 360f, Animation.RELATIVE_TO_SELF,0.5f, Animation.RELATIVE_TO_SELF,0.5f);
#Override
protected void onPreExecute() {
rlRefresh.setEnabled(false);
anim.setInterpolator(new LinearInterpolator());
anim.setRepeatCount(Animation.INFINITE);
anim.setDuration(700);
refreshIV.startAnimation(anim);
}
#Override
protected Void doInBackground(String... strings) {
retrofit2.Call<List<ServiceTaskAxapta>> call = api.getTasks("1", strings[0]);
retrofit2.Response<List<ServiceTaskAxapta>> response = null;
try {
response = call.execute();
} catch (IOException e) {
e.printStackTrace();
}
if(response.code() != 200){
Toast.makeText(context, "Error 1", Toast.LENGTH_SHORT).show();
} else {
for (int i = 0; i < response.body().size(); i++){
String endTime = DateParser.increaseTimeString(response.body().get(i).getReportTime(), 8, 0, false, null, null, null);
allTasksDB.insertIntoDB(response.body().get(i).getTaskID(), "path", response.body().get(i).getStreet(), response.body().get(i).getCity(), response.body().get(i).getPhoneNumber(),
response.body().get(i).getCompanyName(), Integer.parseInt(response.body().get(i).getReportDay()), Integer.parseInt(response.body().get(i).getReportMonth()),
Integer.parseInt(response.body().get(i).getReportYear()), Integer.parseInt(response.body().get(i).getDeadlineDay()), Integer.parseInt(response.body().get(i).getDeadlineMonth()),
Integer.parseInt(response.body().get(i).getDeadlineYear()), response.body().get(i).getReportTime(), endTime);
}
}
call = api.getTasks("2", strings[0]);
response = null;
try {
response = call.execute();
} catch (IOException e) {
e.printStackTrace();
}
if(response.code() != 200){
Toast.makeText(context, "Error 2", Toast.LENGTH_SHORT).show();
} else {
for (int i = 0; i < response.body().size(); i++){
String endTime = DateParser.increaseTimeString(response.body().get(i).getStartTimeMax(), 24, 0,false, null, null, null);
acceptedTasksDB.insertIntoDB(response.body().get(i).getTaskID(), "path", response.body().get(i).getStreet(), response.body().get(i).getCity(), response.body().get(i).getPhoneNumber(),
response.body().get(i).getCompanyName(), Integer.parseInt(response.body().get(i).getDeadlineDay()), Integer.parseInt(response.body().get(i).getDeadlineMonth()),
Integer.parseInt(response.body().get(i).getDeadlineYear()), Integer.parseInt(response.body().get(i).getAcceptedDay()), Integer.parseInt(response.body().get(i).getAcceptedMonth()),
Integer.parseInt(response.body().get(i).getAcceptedYear()), response.body().get(i).getStartTime(), endTime, response.body().get(i).getStartTimeMax(), false, false,
null, null);
}
}
call = api.getTasks("3", strings[0]);
response = null;
try {
response = call.execute();
} catch (IOException e) {
e.printStackTrace();
}
if(response.code() != 200){
Toast.makeText(context, "Error 3", Toast.LENGTH_SHORT).show();
} else {
for (int i = 0; i < response.body().size(); i++){
acceptedTasksDB.insertIntoDB(response.body().get(i).getTaskID(), "path", response.body().get(i).getStreet(), response.body().get(i).getCity(), response.body().get(i).getPhoneNumber(),
response.body().get(i).getCompanyName(), Integer.parseInt(response.body().get(i).getDeadlineDay()), Integer.parseInt(response.body().get(i).getDeadlineMonth()),
Integer.parseInt(response.body().get(i).getDeadlineYear()), Integer.parseInt(response.body().get(i).getAcceptedDay()), Integer.parseInt(response.body().get(i).getAcceptedMonth()),
Integer.parseInt(response.body().get(i).getAcceptedYear()), response.body().get(i).getStartTime(), null, response.body().get(i).getStartTimeMax(), true, false,
null, null);
}
}
call = api.getTasks("4", strings[0]);
response = null;
try {
response = call.execute();
} catch (IOException e) {
e.printStackTrace();
}
if(response.code() != 200){
Toast.makeText(context, "Error 4", Toast.LENGTH_SHORT).show();
} else {
for (int i = 0; i < response.body().size(); i++){
acceptedTasksDB.insertIntoDB(response.body().get(i).getTaskID(), "path", response.body().get(i).getStreet(), response.body().get(i).getCity(), response.body().get(i).getPhoneNumber(),
response.body().get(i).getCompanyName(), Integer.parseInt(response.body().get(i).getDeadlineDay()), Integer.parseInt(response.body().get(i).getDeadlineMonth()),
Integer.parseInt(response.body().get(i).getDeadlineYear()), Integer.parseInt(response.body().get(i).getAcceptedDay()), Integer.parseInt(response.body().get(i).getAcceptedMonth()),
Integer.parseInt(response.body().get(i).getAcceptedYear()), response.body().get(i).getStartTime(), null, response.body().get(i).getStartTimeMax(), true, true,
null, null);
}
}
call = api.getTasks("5", strings[0]);
response = null;
try {
response = call.execute();
} catch (IOException e) {
e.printStackTrace();
}
if(response.code() != 200){
Toast.makeText(context, "Error 5", Toast.LENGTH_SHORT).show();
} else {
dbConnectionProblems.open();
for (int i = 0; i < response.body().size(); i++){
acceptedTasksDB.insertIntoDB(response.body().get(i).getTaskID(), "path", response.body().get(i).getStreet(), response.body().get(i).getCity(), response.body().get(i).getPhoneNumber(),
response.body().get(i).getCompanyName(), Integer.parseInt(response.body().get(i).getDeadlineDay()), Integer.parseInt(response.body().get(i).getDeadlineMonth()),
Integer.parseInt(response.body().get(i).getDeadlineYear()), Integer.parseInt(response.body().get(i).getAcceptedDay()), Integer.parseInt(response.body().get(i).getAcceptedMonth()),
Integer.parseInt(response.body().get(i).getAcceptedYear()), response.body().get(i).getStartTime(), null, response.body().get(i).getStartTimeMax(), true, false,
null, null);
dbConnectionProblems.insertIntoDB(response.body().get(i).getTaskID(), true, null, null, null, null);
}
dbConnectionProblems.close();
}
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
if(!anim.hasEnded()){
refreshIV.setAnimation(null);
}
String lastSynchro = calendar.get(Calendar.HOUR_OF_DAY) + ":" + calendar.get(Calendar.MINUTE) + "#" + calendar.get(Calendar.DAY_OF_MONTH) + "-" + (calendar.get(Calendar.MONTH)-1) + "-" + calendar.get(Calendar.YEAR);
ProjectStuff.saveLastSynchro(lastSynchro, context);
String synchroTime = "Last synchro: " + DateParser.parseTime(context, calendar.get(Calendar.HOUR_OF_DAY), calendar.get(Calendar.MINUTE));
tvSynchroInfo.setText(synchroTime);
rlRefresh.setEnabled(true);
}
}
And the execute() method:
rlRefresh.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Reconnect refreshEvent = new Reconnect();
refreshEvent.execute("12");
}
});
After amount of time (needed to synchronize), amination stops, so it looks like onPostExecute() is called, and TextView is updated, but every later call doesn't update it.

Ok, I've found the problem. I called calendar = Calendar.getInstance() inside onCreate() method, I should have done this in onPostExecute() right before saving it, and showing it inside TextView to get right time.

How to update the Recylerview View items after displayed First Json URL In android

I having a problem update the Item in Recycler View.I will explain clearly about my problem.
I am using two Json URL's first Json URL can send the items to model class.
after completed this called the adapter, then update the second Json URL items with the adapter by using setter model class.
so that's why called adapter.notifyitemchanged, but only one time can updated items next time while looping doesn't update the items display empty for second time.
Code:
public void servicecallsingle(String list, final int pin) {
url = Constants.singleproducturl + list;
JsonObjectRequest request1 = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener < JSONObject > () {
#Override
public void onResponse(JSONObject response) {
JSONObject response1 = response;
if (response1 != null) {
// int status=jsonObject.optInt("status");
String status = response1.optString("status");
if (status.equalsIgnoreCase("200")) { //check the status 200 or not
try {
productpath = response1.getString("productPath");
} catch (JSONException e) {
e.printStackTrace();
}
try {
JSONObject responses = response1.getJSONObject("response");
jsonarray = responses.getJSONArray(DATA);
if (jsonarray.length() > 0) {
// looping through json and adding to movies list
for (int i = 0; i < jsonarray.length(); i++) {
item = new CartItemoriginal();
JSONObject product = jsonarray.getJSONObject(i);
cartpid = product.getString("product_id");
cartproductname = product.getString("product_name");
cartaliasname = product.getString("product_alias");
cartprice = product.getString("mrp_price");
String sp = product.getString("selling_price");
String op = product.getString("offer_selling_price");
sellerid = product.getString("seller_id");
JSONArray pimg = product.getJSONArray("product_images");
JSONObject firstimg = pimg.getJSONObject(0);
cartimg = firstimg.getString("original_res");
String[] img2 = cartimg.split("\\.");
String imagone = productpath + sellerid + '/' + img2[0] + '(' + '2' + '0' + '0' + ')' + '.' + img2[1];
String Quantity = product.getString("product_max_add");
String minqty = product.getString("product_min_add");
int qty = Integer.parseInt(Quantity);
/*** calculation ***/
Long tsLong = System.currentTimeMillis() / 1000;
String ts = tsLong.toString();
int ts1 = Integer.parseInt(ts);
String startdate1 = product.getString("offer_selling_start_date");
String endate1 = product.getString("offer_selling_end_date");
if (("".equals(startdate1)) && ("".equals(endate1))) {
// Toast.makeText(getActivity(),"wrong statemnt",Toast.LENGTH_LONG).show();
if (cartprice.equalsIgnoreCase(sp)) {
double d = Double.parseDouble(cartprice);
int mrp = (int) d;
price = String.valueOf(mrp);
} else {
double s = Double.parseDouble(sp);
int sales = (int) s;
price = String.valueOf(sales);
}
} else {
int startdate = Integer.parseInt(startdate1);
int endate2 = Integer.parseInt(endate1);
if (ts1 > startdate && ts1 < endate2) {
double offer = Double.parseDouble(op);
int offers = (int) offer;
price = String.valueOf(offers);
} else {
if (cartprice.equalsIgnoreCase(sp)) {
double d = Double.parseDouble(cartprice);
int mrp = (int) d;
price = String.valueOf(mrp);
} else {
double s = Double.parseDouble(sp);
int sales = (int) s;
price = String.valueOf(sales);
}
}
}
item.setProductname(cartproductname);
item.setQty(1);
item.setProductimg(imagone);
item.setMaxquantity(Quantity);
item.setAliasname(cartaliasname);
item.setPrice(price);
item.setMinquantity(minqty);
item.setProductid(cartpid);
cart.add(item);
// cart.add(new CartItemoriginal(imagone,cartproductname,cartaliasname,1,Quantity,minqty,price,cartpid));
}
}
} catch (JSONException e) {
e.printStackTrace();
}
} // condtion check the status 200
else // this is if status falied in runtime
{
Toast.makeText(CartItems.this, "Status Failed in Banner Page check ur network connection", Toast.LENGTH_LONG).show();
}
// llm = new LinearLayoutManager(CartItems.this);
MainLinear.setVisibility(View.VISIBLE);
final CustomLinearLayoutManagercartpage layoutManager = new CustomLinearLayoutManagercartpage(CartItems.this, LinearLayoutManager.VERTICAL, false);
recyleitems.setHasFixedSize(false);
recyleitems.setLayoutManager(layoutManager);
cartadapter = new CartlistAdapter(cart, CartItems.this);
Log.i(String.valueOf(cartadapter), "cartadapter");
recyleitems.setAdapter(cartadapter);
recyleitems.setNestedScrollingEnabled(false);
myView.setVisibility(View.GONE);
cartadapter.notifyDataSetChanged();
}
String id = cartpid;
String selleid = sellerid;
final int pinnum = pin;
String pinurl = "http://192.168.0.33/sharpswebsite3/qcrest1.0/?type=pinCodeCheck&result=json&product_id=" + id + "&seller_id=" + selleid + "&pinCode=" + pinnum;
JsonObjectRequest request2 = new JsonObjectRequest(Request.Method.GET, pinurl, null, new Response.Listener < JSONObject > () {
#Override
public void onResponse(JSONObject responsesecond) {
JSONObject response2 = responsesecond;
// do something with response1 & response here...
if (response2 != null) {
// int status=jsonObject.optInt("status");
String status = response2.optString("status");
if (status.equalsIgnoreCase("200")) { //check the status 200 or not
try {
JSONObject responses = response2.getJSONObject("response");
jsonarray = responses.getJSONArray(DATA);
if (jsonarray.length() > 0) {
Log.i(String.valueOf(jsonarray.length()), "message");
// looping through json and adding to movies list
for (int j = 0; j < jsonarray.length(); j++) {
JSONObject product = jsonarray.getJSONObject(j);
process = product.getString("process");
Message = product.getString("message");
if (process.equalsIgnoreCase("success") && Message.equalsIgnoreCase("success")) {
cartdelivery = product.getString("delivery");
cartshippingcharge = product.getString("shipping_charge");
String pincode = product.getString("pincode");
/**************************calculation of shipping days**************************/
int day = Integer.parseInt(cartdelivery);
Calendar c = Calendar.getInstance();
String dayNumberSuffix = getDayNumberSuffix(day);
SimpleDateFormat sdf = new SimpleDateFormat(" MMM d'" + dayNumberSuffix + "', yyyy");
String currentDateandTime = sdf.format(new Date());
try {
c.setTime(sdf.parse(currentDateandTime));
} catch (ParseException e) {
e.printStackTrace();
}
c.add(Calendar.DATE, day);
Date resultdate = new Date(c.getTimeInMillis());
currentDateandTime = sdf.format(resultdate);
Log.d(String.valueOf(currentDateandTime), "shipping days");
cart.get(j).setDelivery("Standard delivery by" + " " + currentDateandTime);
cart.get(j).setShippincharge(cartshippingcharge);
cart.get(j).setSellername("richard feloboune");
cartadapter.notifyItemChanged(j);
cartadapter.notifyItemRangeChanged(j, cart.size());
} else {
// cart2.add(new Cartitemoringinaltwo("Seller doesn't deliver to this item to"+" "+ String.valueOf(pinnum)));
cart.get(j).setError("Seller doesn't deliver to this item to" + " " + String.valueOf(pinnum));
cartadapter.notifyItemChanged(j);
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
// stopping swipe refresh
// swipeRefreshLayout.setRefreshing(false);
} // condtion check the status 200
else // this is if status falied in runtime
{
Toast.makeText(CartItems.this, "Status Failed in Banner Page check ur network connection", Toast.LENGTH_LONG).show();
}
}
pincheck();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.i("onErrorResponse", error.toString());
}
});
AppController.getInstance().addToRequestQueue(request2);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.i("onErrorResponse", error.toString());
}
});
AppController.getInstance().addToRequestQueue(request1);
}
Note: While looping first time can set the item in setter model class but second couldn't set the item to model class.
Anyone solve this problem glad to appreciate.
Thanks in advance

The problem is volley doesn't wait for the request to be completed. So as the first call is made within seconds other call will be also made. So, you need to create an interface which will be called when the first webservice is called, and than in interface call other webservice and than notifyDataSet.
public void servicecallsingle(String list, final int pin) {
url = Constants.singleproducturl + list;
JsonObjectRequest request1 = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener < JSONObject > () {
#Override
public void onResponse(JSONObject response) {
JSONObject response1 = response;
if (response1 != null) {
// int status=jsonObject.optInt("status");
String status = response1.optString("status");
if (status.equalsIgnoreCase("200")) { //check the status 200 or not
try {
productpath = response1.getString("productPath");
} catch (JSONException e) {
e.printStackTrace();
}
parseJson(response1, new WebServiceCallBack{
public void getWebserviceCallBack(){
// Call another webservice here
String id = cartpid;
String selleid = sellerid;
final int pinnum = pin;
String pinurl = "http://192.168.0.33/sharpswebsite3/qcrest1.0/?type=pinCodeCheck&result=json&product_id=" + id + "&seller_id=" + selleid + "&pinCode=" + pinnum;
JsonObjectRequest request2 = new JsonObjectRequest(Request.Method.GET, pinurl, null, new Response.Listener < JSONObject > () {
#Override
public void onResponse(JSONObject responsesecond) {
JSONObject response2 = responsesecond;
// do something with response1 & response here...
if (response2 != null) {
// int status=jsonObject.optInt("status");
String status = response2.optString("status");
if (status.equalsIgnoreCase("200")) { //check the status 200 or not
try {
JSONObject responses = response2.getJSONObject("response");
jsonarray = responses.getJSONArray(DATA);
if (jsonarray.length() > 0) {
Log.i(String.valueOf(jsonarray.length()), "message");
// looping through json and adding to movies list
for (int j = 0; j < jsonarray.length(); j++) {
JSONObject product = jsonarray.getJSONObject(j);
process = product.getString("process");
Message = product.getString("message");
if (process.equalsIgnoreCase("success") && Message.equalsIgnoreCase("success")) {
cartdelivery = product.getString("delivery");
cartshippingcharge = product.getString("shipping_charge");
String pincode = product.getString("pincode");
/**************************calculation of shipping days**************************/
int day = Integer.parseInt(cartdelivery);
Calendar c = Calendar.getInstance();
String dayNumberSuffix = getDayNumberSuffix(day);
SimpleDateFormat sdf = new SimpleDateFormat(" MMM d'" + dayNumberSuffix + "', yyyy");
String currentDateandTime = sdf.format(new Date());
try {
c.setTime(sdf.parse(currentDateandTime));
} catch (ParseException e) {
e.printStackTrace();
}
c.add(Calendar.DATE, day);
Date resultdate = new Date(c.getTimeInMillis());
currentDateandTime = sdf.format(resultdate);
Log.d(String.valueOf(currentDateandTime), "shipping days");
cart.get(j).setDelivery("Standard delivery by" + " " + currentDateandTime);
cart.get(j).setShippincharge(cartshippingcharge);
cart.get(j).setSellername("richard feloboune");
cartadapter.notifyItemChanged(j);
cartadapter.notifyItemRangeChanged(j, cart.size());
} else {
// cart2.add(new Cartitemoringinaltwo("Seller doesn't deliver to this item to"+" "+ String.valueOf(pinnum)));
cart.get(j).setError("Seller doesn't deliver to this item to" + " " + String.valueOf(pinnum));
cartadapter.notifyItemChanged(j);
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
// stopping swipe refresh
// swipeRefreshLayout.setRefreshing(false);
} // condtion check the status 200
else // this is if status falied in runtime
{
Toast.makeText(CartItems.this, "Status Failed in Banner Page check ur network connection", Toast.LENGTH_LONG).show();
}
}
pincheck();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.i("onErrorResponse", error.toString());
}
});
AppController.getInstance().addToRequestQueue(request2);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.i("onErrorResponse", error.toString());
}
});
AppController.getInstance().addToRequestQueue(request1);
});
}
} // condtion check the status 200
else // this is if status falied in runtime
{
Toast.makeText(CartItems.this, "Status Failed in Banner Page check ur network connection", Toast.LENGTH_LONG).show();
}
// llm = new LinearLayoutManager(CartItems.this);
MainLinear.setVisibility(View.VISIBLE);
final CustomLinearLayoutManagercartpage layoutManager = new CustomLinearLayoutManagercartpage(CartItems.this, LinearLayoutManager.VERTICAL, false);
recyleitems.setHasFixedSize(false);
recyleitems.setLayoutManager(layoutManager);
cartadapter = new CartlistAdapter(cart, CartItems.this);
Log.i(String.valueOf(cartadapter), "cartadapter");
recyleitems.setAdapter(cartadapter);
recyleitems.setNestedScrollingEnabled(false);
myView.setVisibility(View.GONE);
cartadapter.notifyDataSetChanged();
}
public void parseJson(JSONObject response1, WebServiceCallBack webserviceCallBack){
try {
JSONObject responses = response1.getJSONObject("response");
jsonarray = responses.getJSONArray(DATA);
if (jsonarray.length() > 0) {
// looping through json and adding to movies list
for (int i = 0; i < jsonarray.length(); i++) {
item = new CartItemoriginal();
JSONObject product = jsonarray.getJSONObject(i);
cartpid = product.getString("product_id");
cartproductname = product.getString("product_name");
cartaliasname = product.getString("product_alias");
cartprice = product.getString("mrp_price");
String sp = product.getString("selling_price");
String op = product.getString("offer_selling_price");
sellerid = product.getString("seller_id");
JSONArray pimg = product.getJSONArray("product_images");
JSONObject firstimg = pimg.getJSONObject(0);
cartimg = firstimg.getString("original_res");
String[] img2 = cartimg.split("\\.");
String imagone = productpath + sellerid + '/' + img2[0] + '(' + '2' + '0' + '0' + ')' + '.' + img2[1];
String Quantity = product.getString("product_max_add");
String minqty = product.getString("product_min_add");
int qty = Integer.parseInt(Quantity);
/*** calculation ***/
Long tsLong = System.currentTimeMillis() / 1000;
String ts = tsLong.toString();
int ts1 = Integer.parseInt(ts);
String startdate1 = product.getString("offer_selling_start_date");
String endate1 = product.getString("offer_selling_end_date");
if (("".equals(startdate1)) && ("".equals(endate1))) {
// Toast.makeText(getActivity(),"wrong statemnt",Toast.LENGTH_LONG).show();
if (cartprice.equalsIgnoreCase(sp)) {
double d = Double.parseDouble(cartprice);
int mrp = (int) d;
price = String.valueOf(mrp);
} else {
double s = Double.parseDouble(sp);
int sales = (int) s;
price = String.valueOf(sales);
}
} else {
int startdate = Integer.parseInt(startdate1);
int endate2 = Integer.parseInt(endate1);
if (ts1 > startdate && ts1 < endate2) {
double offer = Double.parseDouble(op);
int offers = (int) offer;
price = String.valueOf(offers);
} else {
if (cartprice.equalsIgnoreCase(sp)) {
double d = Double.parseDouble(cartprice);
int mrp = (int) d;
price = String.valueOf(mrp);
} else {
double s = Double.parseDouble(sp);
int sales = (int) s;
price = String.valueOf(sales);
}
}
}
item.setProductname(cartproductname);
item.setQty(1);
item.setProductimg(imagone);
item.setMaxquantity(Quantity);
item.setAliasname(cartaliasname);
item.setPrice(price);
item.setMinquantity(minqty);
item.setProductid(cartpid);
cart.add(item);
// cart.add(new CartItemoriginal(imagone,cartproductname,cartaliasname,1,Quantity,minqty,price,cartpid));
}
}
} catch (JSONException e) {
e.printStackTrace();}
webserviceCallBack.getWebserviceCallBack();
}
public interface WebServiceCallBack{
public void getWebserviceCallBack()
}

how to resolve error in reading json?

Below is my json, which I am trying to read (code Log.i("callinfo", callInfo + ""); onwards, but getting error. My code to read and error message are also mentioned.
{
"CallInfo":[
{
"ItemInfo":[
{
"chargeable":"True",
"itemID":"B13984350K"
},
{
"chargeable":"True",
"itemID":"B13984351A"
}
],
"numberOfCopies":2
}
],
"ISBN":[
""
],
"TitleAvailabilityInfo":null,
"author":"Chief Army Medical Officer.",
"baseCallNumber":"RC87.1 PRE",
"publisherName":"HQ Army Medical Services,",
"title":"Preventing heat injuries : the commanders' guide",
"titleID":9206,
"yearOfPublication":"2000"
}
Code:
public void readBarCode(String response, String scannedBarcode) {
final CountDownLatch latch = new CountDownLatch(1);
final String[] names = new String[4];
JSONArray mArray, mArray1, mArray2;
int totalCount = 0;
int avail = 0;
String author, title, publisherName;
try {
JSONObject obj = new JSONObject(response);
//Results
if (obj.getJSONObject("Results") != null) {
JSONObject obj1 = obj.getJSONObject("Results");
//LookupTitleInfoResponse
if (obj1.getJSONObject("LookupTitleInfoResponse") != null) {
JSONObject obj2 = obj1.getJSONObject("LookupTitleInfoResponse");
//TitleInfo
if (obj2.getJSONArray("TitleInfo") != null) {
mArray = obj2.getJSONArray("TitleInfo");
JSONObject callInfo = mArray.getJSONObject(0);
Log.i("callinfo", callInfo + "");
mArray2 = callInfo.getJSONArray("ItemInfo");
for (int i = 0; i <= mArray2.length(); i++) {
if (mArray2.getJSONObject(i).getString("chargeable").equals("False")) {
totalCount++;
}
if (mArray2.getJSONObject(i).getString("itemID").equals(scannedBarcode)) {
avail = 1;
}
}
author = mArray.getJSONObject(0).getString("author");
publisherName = mArray.getJSONObject(0).getString("publisherName");
title = mArray.getJSONObject(0).getString("title");
TitleTxt.setText(title);
PublisherTxt.setText(publisherName);
CreatorTxt.setText(author);
BookBarcode.setText(scannedBarcode);
AvailabiltyTxt.setText(totalCount);
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}
Getting error on below line:
mArray2 = callInfo.getJSONArray("ItemInfo");
Error:
org.json.JSONException: No value for ItemInfo
03-28 16:33:09.953 17229-17229/com.androidatc.customviewindrawer W/System.err: at org.json.JSONObject.get(JSONObject.java:389)
03-28 16:33:09.953 17229-17229/com.androidatc.customviewindrawer W/System.err: at org.json.JSONObject.getJSONArray(JSONObject.java:584)
Here we can clearly see that ItemInfo got value.
Can anyone tell me - how to resolve above error?
Many thanks in advance.

Try with below code
mArray = obj2.getJSONArray("TitleInfo");
JSONObject titleInfo = mArray.getJSONObject(0);
JSONArray arr1 = titleInfo.getJSONArray("CallInfo");
JSONObject callInfo = arr1.getJSONObject(0);
JSONArray arr2 = callInfo.getJSONArray("ItemInfo");
Log.i("ItemInfo", arr2 + "");
Here is full method
public void readBarCode(String response, String scannedBarcode) {
final CountDownLatch latch = new CountDownLatch(1);
final String[] names = new String[4];
JSONArray mArray, mArray1, mArray2;
int totalCount = 0;
int avail = 0;
String author, title, publisherName;
try {
JSONObject obj = new JSONObject(response);
//Results
if (obj.getJSONObject("Results") != null) {
JSONObject obj1 = obj.getJSONObject("Results");
//LookupTitleInfoResponse
if (obj1.getJSONObject("LookupTitleInfoResponse") != null) {
JSONObject obj2 = obj1.getJSONObject("LookupTitleInfoResponse");
//TitleInfo
if (obj2.getJSONArray("TitleInfo") != null) {
mArray = obj2.getJSONArray("TitleInfo");
JSONObject titleInfo = mArray.getJSONObject(0);
JSONArray arr1 = titleInfo.getJSONArray("CallInfo");
JSONObject callInfo = arr1.getJSONObject(0);
JSONArray arr2 = callInfo.getJSONArray("ItemInfo");
Log.i("ItemInfo", arr2 + "");
for (int i = 0; i < arr2.length(); i++) {
if (arr2.getJSONObject(i).getString("chargeable").equals("False")) {
totalCount++;
}
if (arr2.getJSONObject(i).getString("itemID").equals(scannedBarcode)) {
avail = 1;
}
}
author = mArray.getJSONObject(0).getString("author");
publisherName = mArray.getJSONObject(0).getString("publisherName");
title = mArray.getJSONObject(0).getString("title");
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}

Android: JSON Custom Merge

I have created two JSON like following,
First Array:
[
{
"id":255,
"is_new":0,
"is_checked":true,
"name":"Towel Rack 650",
"is_favourite":false
},
{
"id":257,
"is_new":0,
"is_checked":true,
"name":"Towel Rod 450",
"is_favourite":false
},
{
"id":259,
"is_new":0,
"is_checked":true,
"name":"Napkin Ring - Round",
"is_favourite":false
}
]
Second Array:
[
{
"id":258,
"is_new":0,
"is_checked":false,
"name":"Towel Rod 650",
"is_favourite":true
},
{
"id":259,
"is_new":0,
"is_checked":false,
"name":"Napkin Ring - Round",
"is_favourite":true
}
]
In that I have to merge both array and also want to keep duplicate values once in final array.
I used following snippet for merging.
private JSONArray concatArray(JSONArray arr1, JSONArray arr2)
throws JSONException {
JSONArray result = new JSONArray();
for (int i = 0; i < arr1.length(); i++) {
result.put(arr1.get(i));
}
for (int i = 0; i < arr2.length(); i++) {
result.put(arr2.get(i));
}
return result;
}
I am getting:
[
{
"id":255,
"is_new":0,
"is_checked":true,
"name":"Towel Rack 650",
"is_favourite":false
},
{
"id":257,
"is_new":0,
"is_checked":true,
"name":"Towel Rod 450",
"is_favourite":false
},
{
"id":259,
"is_new":0,
"is_checked":true,
"name":"Napkin Ring - Round",
"is_favourite":false
},
{
"id":258,
"is_new":0,
"is_checked":false,
"name":"Towel Rod 650",
"is_favourite":true
},
{
"id":259,
"is_new":0,
"is_checked":false,
"name":"Napkin Ring - Round",
"is_favourite":true
}
]
In that I am getting duplicate values of id 259 which has different values of is_checked and is_favourite which I want true value for both like:
{
"id":259,
"is_new":0,
"is_checked":true,
"name":"Napkin Ring - Round",
"is_favourite":true
}
I have also tried SparseArray but not succeed. Is there any way to do this?
Your help would be appreciated.

Alright, I wrote the code for you:
First, preparing the objects:
JSONArray arr1 = new JSONArray(),arr2 = new JSONArray(),result = new JSONArray();
JSONObject jobj = new JSONObject();
try {
jobj.put("id", "255");
jobj.put("is_new", 0);
jobj.put("is_checked", true);
jobj.put("name", "Towel Rack 650");
jobj.put("is_favourite", false);
arr1.put(jobj);
jobj = new JSONObject();
jobj.put("id", "257");
jobj.put("is_new", 0);
jobj.put("is_checked", true);
jobj.put("name", "Towel Rod 450");
jobj.put("is_favourite", false);
arr1.put(jobj);
jobj = new JSONObject();
jobj.put("id", "259");
jobj.put("is_new", 0);
jobj.put("is_checked", true);
jobj.put("name", "Napkin Ring - Round");
jobj.put("is_favourite", false);
arr1.put(jobj);
jobj = new JSONObject();
jobj.put("id", "258");
jobj.put("is_new", 0);
jobj.put("is_checked", false);
jobj.put("name", "Towel Rod 650");
jobj.put("is_favourite", true);
arr2.put(jobj);
jobj = new JSONObject();
jobj.put("id", "259");
jobj.put("is_new", 0);
jobj.put("is_checked", false);
jobj.put("name", "Napkin Ring - Round");
jobj.put("is_favourite", true);
arr2.put(jobj);
result = concatArray(arr1, arr2);
} catch (JSONException e) {
e.printStackTrace();
}
Then, the method:
private JSONArray concatArray(JSONArray arr1, JSONArray arr2)
throws JSONException {
JSONArray result = new JSONArray();
JSONObject jobj1 = new JSONObject(),jobj2 = new JSONObject(),tmpobj = new JSONObject();
Set<String> objectsList = new HashSet<String>();
for (int i = 0; i < arr1.length(); i++) {
if(objectsList.add(arr1.getJSONObject(i).getString("id"))){
result.put(arr1.getJSONObject(i));
}
}
for (int i = 0; i < arr2.length(); i++) {
if(objectsList.add(arr2.getJSONObject(i).getString("id"))){
result.put(arr2.getJSONObject(i));
} else {
jobj1 = arr2.getJSONObject(i);
int index = 0;
for(int j = 0; j < result.length(); j++){
if(result.getJSONObject(j).getString("id").equals(jobj1.getString("id"))){
jobj2 = result.getJSONObject(j);
index = j;
}
}
tmpobj.put("id", jobj2.getString("id"));
tmpobj.put("is_new", jobj2.getInt("is_new"));
if(jobj1.getBoolean("is_checked")||jobj2.getBoolean("is_checked")){
tmpobj.put("is_checked", true);
} else {
tmpobj.put("is_checked", false);
}
tmpobj.put("name", jobj2.getString("name"));
if(jobj1.getBoolean("is_favourite")||jobj2.getBoolean("is_favourite")){
tmpobj.put("is_favourite", true);
} else {
tmpobj.put("is_favourite", false);
}
result.put(index, tmpobj);
}
}
return result;
}

You can add a SparseArray(key:id,value:each JSONObject in your JSONArray) to save your jsonobjects,every get a jsonobject,first check if its id has existed in SparseArray,if not,insert it.or you will do your logic to decide whether to insert it or update it or ignore it.
At last,if you want to get a JSONArray as return type,then add all SparseArray's values to your JSONArray result.

how do i load swipe to refresh data at top listview android

Currently, my listview shows me current data. On Swipe, it will load old data from the server and store first old data and after current data. load server data at the top while swipe to refresh data. it is no updating data at the top level. Help me out for this situation. every time load data on top. and show loader while refreshing data while swipe to top to bottom.
Thank you in advance. Here I am posting my code for review
public class CommmentActivity extends Activity{
String Curl;
boolean mBuzy;
String UserId;
String VidoId;
String strComment;
EditText etComment;
String mPositionId = "";
String strfriendsSyncDate;
ArrayAdapter<String> mentionList;
ListCommentAdapter commentAdapter;
AutoCompleteTextView aCompletView;
DatabaseHandler db = new DatabaseHandler(this);
List<CommentListInfo> list_CommentInfo = new ArrayList<CommentListInfo>();
ArrayList<MentionBeanClass> mList;
MentionBeanClass addMention;
List<String> SuggetionList;
ImageView IvAddComment;
ListView CommentList;
SessionCreator m_session;
boolean m = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.commentvideo_main);
SuggetionList = new ArrayList<String>();
Curl = GlobalMethod.TokenGenerator() + "&action=getCommentsVideo";
Intent data = getIntent();
UserId = data.getStringExtra("userId");
VidoId = data.getStringExtra("videoId");
init();
strfriendsSyncDate = m_session.getfriendsSyncDate();
new CommentsDetail().execute(UserId,VidoId,strfriendsSyncDate,mPositionId,Curl,"1");
ArratListBeans.setArMentionList(mList);
commentAdapter = new ListCommentAdapter(getApplicationContext(), list_CommentInfo);
CommentList.setAdapter(commentAdapter);
CommentList.setOnScrollListener(new OnScrollListener() {
#Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
// TODO Auto-generated method stub
switch (scrollState) {
case OnScrollListener.SCROLL_STATE_IDLE:{
Log.d("ScrollStateCheck", ""+scrollState);
break;
}
case OnScrollListener.SCROLL_STATE_TOUCH_SCROLL:
{
mBuzy = true;
int count = CommentList.getCount();
if(CommentList.getFirstVisiblePosition()==0){
CommentListInfo c;
c = (CommentListInfo) CommentList.getAdapter().getItem(CommentList.getFirstVisiblePosition());
mPositionId = c.CommentId;
Log.d("mpositionId", mPositionId);
String strUrl = GlobalMethod.TokenGenerator() + "&action=getCommentsVideo";
new CommentsDetail().execute(UserId,VidoId,strfriendsSyncDate,c.CommentId,strUrl,"1");
}
break;
}
case OnScrollListener.SCROLL_STATE_FLING:{
mBuzy = true;
break;
}
default:
break;
}
}
#Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
// TODO Auto-generated method stub
}
});
IvAddComment.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
strComment = etComment.getText().toString();
etComment.getText().clear();
String strUrl = GlobalMethod.TokenGenerator() + "&action=addCommentsVideo";
new CommentsDetail().execute(UserId,VidoId,strComment,strUrl,"0");
new CommentsDetail().execute(UserId,VidoId,strfriendsSyncDate,Curl,"1");
commentAdapter.notifyDataSetChanged();
}
});
}
private void init() {
// TODO Auto-generated method stub
m_session = new SessionCreator(getApplicationContext());
etComment = (EditText)findViewById(R.id.etComments);
CommentList = (ListView)findViewById(R.id.lvLatestComments);
IvAddComment = (ImageView)findViewById(R.id.addComment);
mList = new ArrayList<MentionBeanClass>();
}
public class CommentsDetail extends AsyncTask<String, String, String>{
#Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
ServiceHandler serviceClient;
String mJsonString;
try{
String userId = (String)params[0];
String vId = (String)params[1];
String syncdate = (String)params[2];
String startPosition = (String)params[3];
String strUrl = (String)params[4];
List<NameValuePair> paramsNameValuePairs = new ArrayList<NameValuePair>();
paramsNameValuePairs.add(new BasicNameValuePair("userId", userId));
paramsNameValuePairs.add(new BasicNameValuePair("videoId", vId));
paramsNameValuePairs.add(new BasicNameValuePair("startFrom", startPosition));
paramsNameValuePairs.add(new BasicNameValuePair("friendsSyncDate", syncdate));
serviceClient = new ServiceHandler();
mJsonString = serviceClient.makeServiceCall(strUrl,
ServiceHandler.POST, paramsNameValuePairs);
Log.i("---->>>>>>>>>>", paramsNameValuePairs + "");
Log.d("Response Json-----------------------",mJsonString );
return mJsonString;
}catch (Exception e) {
e.getStackTrace();
}
return null;
}
#SuppressWarnings({ "unchecked", "unchecked", "unchecked" })
#Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
try{
if (result != null) {
JSONObject responsJsonObj = new JSONObject(result);
JSONObject jsonObj = (JSONObject) responsJsonObj
.optJSONObject("data");
try {
String str = jsonObj.getString("error");
if ( str != null || str.length() != 0) {
// error
//Toast.makeText(NewsfeedActivity.this, jsonObj.getString("error"),Toast.LENGTH_LONG).show();
return;
}
} catch (JSONException je) {
Log.d("jex ------>", "" + je.getMessage());
try {
String str = jsonObj.getString("message");
Log.d("message=", "" + str);
if ( str != null || str.length() != 0) {
// VALID RESPONSE, NOW PARSE IT
if (jsonObj.has("comments")) {
JSONArray colArray = jsonObj.getJSONArray("comments");
Log.d("Colunm Array", ""+colArray);
int nComments = colArray.length();
Log.d("# comments", "" + nComments);
for(int i=0; i<nComments; i++){
JSONObject obj = colArray.getJSONObject(i);
Gson Comments = new Gson();
String strComments = Comments.toJson(obj);
Log.d("# obj=", "" + obj.toString());
CommentListInfo cmtInfo = new CommentListInfo();
cmtInfo.c_userId = obj.getString("userId");
cmtInfo.c_name = obj.getString("name");
cmtInfo.DateAdded = obj.getString("dateAdded");
cmtInfo.CommentId = obj.getString("commentId");
cmtInfo.CommentText = obj.getString("text");
cmtInfo.ImageUrl = obj.getString("imageLink");
list_CommentInfo.add(cmtInfo);
}
}
}
if ( str != null || str.length() != 0) {
// VALID RESPONSE, NOW PARSE IT
if (jsonObj.has("addPosition")) {
Log.d("# obj=", "" + jsonObj.toString());
Log.d("Add Position", jsonObj.getString("addPosition"));
}
}
if ( str != null || str.length() != 0) {
// VALID RESPONSE, NOW PARSE IT
if (jsonObj.has("mentions")) {
JSONArray colArray = jsonObj.getJSONArray("mentions");
Log.d("Colunm Array", ""+colArray);
int nMention = colArray.length();
Log.d("# mentions", "" + nMention);
for(int i=0; i<nMention; i++){
JSONObject obj = colArray.getJSONObject(i);
Log.d("# obj=", "" + obj.toString());
mList.add(new MentionBeanClass(obj.getString("id"), obj.getString("name")));
Log.d("Mention Info", "Id : "+obj.getString("id")+" Name : "+obj.getString("name"));
}
}
}
if ( str != null || str.length() != 0) {
// VALID RESPONSE, NOW PARSE IT
if (jsonObj.has("videoUserData")) {
Log.d("# obj=", "" + jsonObj.toString());
Log.d("videoUserData"," "+ jsonObj.getString("videoUserData"));
}
}
if ( str != null || str.length() != 0) {
// VALID RESPONSE, NOW PARSE IT
if (jsonObj.has("friendsAdded")) {
JSONArray colArray = jsonObj.getJSONArray("friendsAdded");
String json = colArray.toString();
Log.d("Colunm Array", ""+colArray);
int nfriendsAdded = colArray.length();
Log.d("# friendsAdded", "" + nfriendsAdded);
for(int i=0; i<nfriendsAdded; i++){
JSONObject obj = colArray.getJSONObject(i);
Log.d("# obj=", "" + obj.toString());
String id = obj.getString("userId");
String name = obj.getString("name");
String imgUrl = obj.getString("imageLink");
db.addCustomer(new FriendListInfo(id, name, imgUrl));
}
}
}
if ( str != null || str.length() != 0) {
// VALID RESPONSE, NOW PARSE IT
if (jsonObj.has("friendsDeleted")) {
JSONArray colArray = jsonObj.getJSONArray("friendsDeleted");
Log.d("Colunm Array", ""+colArray);
int nfriendsDeleted = colArray.length();
Log.d("# friendsDeleted", "" + nfriendsDeleted);
for(int i=0; i<nfriendsDeleted; i++){
JSONObject obj = colArray.getJSONObject(i);
Log.d("# obj=", "" + obj.toString());
}
}else{
Log.d("Delete Friends", " No Deleted List");
}
}
if ( str != null || str.length() != 0) {
// VALID RESPONSE, NOW PARSE IT
if (jsonObj.has("friendsUpdated")) {
JSONArray colArray = jsonObj.getJSONArray("friendsUpdated");
Log.d("Colunm Array", ""+colArray);
int nfriendsUpdated = colArray.length();
Log.d("# friendsDeleted", "" + nfriendsUpdated);
for(int i=0; i<nfriendsUpdated; i++){
JSONObject obj = colArray.getJSONObject(i);
Log.d("# obj=", "" + obj.toString());
}
}else{
Log.d("Update Friends", " No Updated List");
}
}
if ( str != null || str.length() != 0) {
// VALID RESPONSE, NOW PARSE IT
if (jsonObj.has("friendsSyncDate")) {
Log.d("# friendsDeleted", "" + jsonObj);
Log.d("# obj=", "" + jsonObj.toString());
String myString = m_session.getfriendsSyncDate();
Log.d("myString", myString);
m_session.putfriendsSyncDate(jsonObj.getString("friendsSyncDate"));
Log.d("Sync Date "," "+jsonObj.getString("friendsSyncDate"));
}
}
} catch (JSONException je2) {
je2.printStackTrace();
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
}

Add adapter-listview update code
case OnScrollListener.SCROLL_STATE_TOUCH_SCROLL:
{
mBuzy = true;
int count = CommentList.getCount();
if(CommentList.getFirstVisiblePosition()==0){
CommentListInfo c;
c = (CommentListInfo) CommentList.getAdapter().getItem(CommentList.getFirstVisiblePosition());
mPositionId = c.CommentId;
Log.d("mpositionId", mPositionId);
String strUrl = GlobalMethod.TokenGenerator() + "&action=getCommentsVideo";
new CommentsDetail().execute(UserId,VidoId,strfriendsSyncDate,c.CommentId,strUrl,"1");
CommentList.setAdapter(commentAdapter); //update code
}