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The items added multiple times into the RecyclerView with pagining

I am working on android app with java. and now I have to do messaging activities. I use RecyclerView to display the messages items. Also my messages Api is work with pagining, every time I send the last id and the server return the previous 10 messages.(Page size is 10). For filling the RecyclerView I use an Adapter but my problem is, that the item is added multiple times into the RecyclerView.
I will put my activity code and the adapter code
My Activity:
public class ConversationsActivity extends RootActivity implements ConversationsAdapter.ConversationOnClickHandler {
RetrofitBuilder rB = new RetrofitBuilder();
IApi service = rB.retrofit.create(IApi.class);
String authorization;
RecyclerView rv;
ConversationsAdapter adapter;
ProgressBar progressBar;
LinearLayoutManager layoutManager;
//declare it as global var for future cancel refresh
private SwipeRefreshLayout swipeLayout;
boolean wasSwiped;
// initialise loading state
boolean mIsLoading, mIsLastPage = false;
// amount of items you want to load per page
final int pageSize = 10;
int mCurrentPage =0;
int lastId;
boolean f;
int p =1;
private AlphaAnimation buttonClick = new AlphaAnimation(1F, 0.7F);
int chatId, to;
String senderType, name, to_type;
TextView no_data;
Button btnActionBar11, send;
TextView tvActionBar;
EditText message;
Context context;
ArrayList<Conversation.Data> conversationArrayList = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_conversations);
context = this;
adapter = new ConversationsAdapter(this,context);
Intent intent = getIntent();
chatId = intent.getIntExtra("chatId",0);
Intent intent1 = getIntent();
senderType = intent1.getStringExtra("senderType");
Intent intent2 = getIntent();
name = intent2.getStringExtra("name");
Intent intent3 = getIntent();
to = intent3.getIntExtra("from",0);
Intent intent4 = getIntent();
to_type = intent4.getStringExtra("from_type");
buttonClick.setDuration(500);
authorization = checkAuthorization();
setContentView(R.layout.activity_conversations);
progressBar = (ProgressBar) findViewById(R.id.progress);
tvActionBar = (TextView) findViewById(R.id.tvActionBar);
tvActionBar.setText(name);
layoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
layoutManager.setReverseLayout(true);
adapter.setHasStableIds(true);
// layoutManager.setStackFromEnd(true);
rv = (RecyclerView) findViewById(R.id.ConversationList);
no_data = (TextView) findViewById(R.id.no_data);
message = (EditText) findViewById(R.id.message);
send = (Button) findViewById(R.id.send);
rv.setLayoutManager(layoutManager);
btnActionBar11 = (Button) findViewById(R.id.btnActionBar11);
btnActionBar11.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getApplicationContext(), ChatActivity.class);
startActivity(intent);
}
});
send.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(message.getText().length() > 0){
sendMessage();
}
}
});
getConversation();
rv.addOnScrollListener(new RecyclerView.OnScrollListener() {
#Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
// number of visible items
int visibleItemCount = ((LinearLayoutManager)recyclerView.getLayoutManager()).getChildCount();
// number of items in layout
int totalItemCount = ((LinearLayoutManager)recyclerView.getLayoutManager()).getItemCount();
// the position of first visible item
int firstVisibleItemPosition = ((LinearLayoutManager)recyclerView.getLayoutManager()).findFirstVisibleItemPosition();
boolean isNotLoadingAndNotLastPage = !mIsLoading && !mIsLastPage;
// flag if number of visible items is at the last
boolean isAtLastItem = firstVisibleItemPosition + visibleItemCount >= totalItemCount;
// validate non negative values
boolean isValidFirstItem = firstVisibleItemPosition >= 0;
// validate total items are more than possible visible items
boolean totalIsMoreThanVisible = totalItemCount >= pageSize;
// flag to know whether to load more
boolean shouldLoadMore = isValidFirstItem && isAtLastItem && totalIsMoreThanVisible && isNotLoadingAndNotLastPage;
if (shouldLoadMore) loadMoreItems(false);
}
});
Intent intent11 = getIntent();
wasSwiped = intent11.getBooleanExtra("wasSwiped",false);
//where you initialize your views:
swipeLayout = (SwipeRefreshLayout) findViewById(R.id.swipe_container);
swipeLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
wasSwiped = true;
//your method to refresh content
Intent intent = new Intent(getApplicationContext(), ConversationsActivity.class)
.putExtra("chatId", chatId)
.putExtra("senderType", senderType)
.putExtra("name",name)
.putExtra("from", to)
.putExtra("from_type", to_type)
.putExtra("wasSwiped", wasSwiped);
startActivity(intent);
}
});
if(wasSwiped){
//don't forget to cancel refresh when work is done
if(swipeLayout.isRefreshing()) {
swipeLayout.setRefreshing(false);
}
}
}
#Override
public void onClickConversation(Conversation.Data conversation) {
}
#Override
public void onBackPressed() {
super.onBackPressed();
Intent intent = new Intent(getApplicationContext(), ChatActivity.class);
startActivity(intent);
}
public void sendMessage(){
Call<Message> call = service.sendMessage(authorization, to, to_type, message.getText().toString());
call.enqueue(new Callback<Message>() {
#Override
public void onResponse(Call<Message> call, Response<Message> response) {
if(response.isSuccessful()){
if(response.body()!= null)
if(response.body().getData() != null);
message.setText("");
getConversation();
//
// adapter.notifyDataSetChanged();
} else {
if(response.body()!= null)
if(response.body().getMessage() != null)
Toast.makeText(getApplicationContext(),"error: " + response.body().getMessage(), Toast.LENGTH_LONG).show();
}
}
#Override
public void onFailure(Call<Message> call, Throwable t) {
Toast.makeText(getApplicationContext(),"error: " + t.getMessage(), Toast.LENGTH_LONG).show();
}
});
}
public void getConversation(){
Call<Conversation> call = service.getConversation(authorization,chatId,"LANDLORD");
call.enqueue(new Callback<Conversation>() {
#Override
public void onResponse(Call<Conversation> call, Response<Conversation> response) {
if(conversationArrayList != null)
if(!conversationArrayList.isEmpty())
conversationArrayList.clear();
if(response.isSuccessful()){
if(response.body()!= null)
if(response.body().getData() != null)
if(response.body().getData().size() > 0){
if (!conversationArrayList.isEmpty())
conversationArrayList.clear(); //The list for update recycle view
adapter.notifyDataSetChanged();
for(int i =0; i < response.body().getData().size(); i++){
conversationArrayList.add(response.body().getData().get(i));
if( i == ( response.body().getData().size() -1 ))
lastId = conversationArrayList.get(conversationArrayList.size() - 1).getId();
}
progressBar.setVisibility(View.GONE);
if (conversationArrayList.isEmpty()) {
rv.setVisibility(View.GONE);
no_data.setVisibility(View.VISIBLE);
}
else {
rv.setVisibility(View.VISIBLE);
no_data.setVisibility(View.GONE);
progressBar.setVisibility(View.GONE);
configureRecyclerView(conversationArrayList);
}
} else {
progressBar.setVisibility(View.GONE);
no_data.setVisibility(View.VISIBLE);
rv.setVisibility(View.GONE);
}
} else {
Toast.makeText(getApplicationContext(),"error: " + response.body().getMessage(), Toast.LENGTH_LONG).show();
}
}
#Override
public void onFailure(Call<Conversation> call, Throwable t) {
Toast.makeText(getApplicationContext(),"error: " + t.getMessage(), Toast.LENGTH_LONG).show();
}
});
}
private void configureRecyclerView(ArrayList chat) {
rv = (RecyclerView) findViewById(R.id.ConversationList);
rv.setHasFixedSize(true);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
linearLayoutManager.setReverseLayout(true);
rv.setLayoutManager(linearLayoutManager);
adapter = new ConversationsAdapter(this,context);
adapter.setConversationData(chat);
adapter.notifyDataSetChanged();
rv.setAdapter(adapter);
}
private void loadMoreItems(boolean isFirstPage) {
mIsLoading = true;
f = isFirstPage;
p = p +1;
Call<Conversation> call = service.getConversationPagenation(authorization,chatId,senderType, lastId);
call.enqueue(new Callback<Conversation>() {
#Override
public void onResponse(Call<Conversation> call, Response<Conversation> response) {
if(response.isSuccessful()){
if(response.body() != null)
if(response.body().getData()!= null) {
// conversationArrayList.clear();
for(int i =0; i < response.body().getData().size(); i++){
conversationArrayList.add(response.body().getData().get(i));
if( i == ( response.body().getData().size() -1 ))
lastId = conversationArrayList.get(conversationArrayList.size() - 1).getId();
}
progressBar.setVisibility(View.GONE);
if(conversationArrayList == null){
rv.setVisibility(View.GONE);
no_data.setVisibility(View.VISIBLE);
return;
}
else if (!f) {
if (!conversationArrayList.isEmpty())
adapter.notifyDataSetChanged();
adapter.addAll(conversationArrayList);
// conversationArrayList.clear(); //The list for update recycle view
}
else {
rv.setVisibility(View.VISIBLE);
no_data.setVisibility(View.GONE);
configureRecyclerView(conversationArrayList);
}
if(conversationArrayList.size() > 0)
lastId = conversationArrayList.get(conversationArrayList.size() - 1).getId();
mIsLoading = false;
mIsLastPage = mCurrentPage == lastId;
mCurrentPage = lastId;
}
}
}
#Override
public void onFailure(Call<Conversation> call, Throwable t) {
Log.e("SomeActivity", t.getMessage());
}
});
}
public String checkAuthorization(){
SharedPreferences settings = getSharedPreferences("log",0);
return settings.getString("Authorization", null);
}
}
My Adapter:
public class ConversationsAdapter extends
RecyclerView.Adapter<ConversationsAdapter.ConversationsAdapterViewHolder> {
private Context context;
private ArrayList<Conversation.Data> mConversation;
private ConversationsAdapter.ConversationOnClickHandler mConversationOnClickHandler;
private static SharedPreferences pref;
public ConversationsAdapter(ConversationsAdapter.ConversationOnClickHandler conversationOnClickHandler, Context _context) {
mConversationOnClickHandler = conversationOnClickHandler;
pref = _context.getSharedPreferences("log", Context.MODE_PRIVATE);
}
public void setConversationData(ArrayList<Conversation.Data> conversation) {
mConversation = conversation;
notifyDataSetChanged();
}
public void addAll(ArrayList<Conversation.Data> newList) {
int lastIndex = mConversation.size() - 1;
mConversation.addAll(newList);
notifyItemRangeInserted(lastIndex, newList.size());
}
#Override
public ConversationsAdapter.ConversationsAdapterViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
context = parent.getContext();
LayoutInflater inflater = LayoutInflater.from(context);
// Inflate the custom layout
View contactView = inflater.inflate(R.layout.row_msg, parent, false);
// Return a new holder instance
ConversationsAdapter.ConversationsAdapterViewHolder viewHolder = new ConversationsAdapter.ConversationsAdapterViewHolder(contactView);
return viewHolder;
}
#Override
public void onBindViewHolder(ConversationsAdapter.ConversationsAdapterViewHolder viewHolder, int position) {
Conversation.Data conversation = mConversation.get(position);
TextView tv1 = viewHolder.tv1;
TextView tv2 = viewHolder.tv2;
// SharedPreferences preferences = context.getSharedPreferences("log", Context.MODE_PRIVATE);
String agentId = pref.getString("agentId", "");
String from_type = conversation.getFromType();
int from = conversation.getFrom();
if((agentId.equals(String.valueOf(from))) && from_type.equals("AGENT")){
tv2.setVisibility(View.GONE);
tv1.setVisibility(View.VISIBLE);
tv1.setText(conversation.getBody());
}
else {
tv2.setVisibility(View.VISIBLE);
tv1.setVisibility(View.GONE);
tv2.setText(conversation.getBody());
}
}
// Returns the total count of items in the list
#Override
public int getItemCount() {
if(mConversation == null) {
return 0;
}
return mConversation.size();
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public int getItemViewType(int position) {
return position;
}
#Override
public void setHasStableIds(boolean hasStableIds) {
super.setHasStableIds(hasStableIds);
}
public class ConversationsAdapterViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public final TextView tv1;
public final TextView tv2;
public ConversationsAdapterViewHolder(View view) {
super(view);
tv1 = (TextView) view.findViewById(R.id.tvMsgR);
tv2 = (TextView) view.findViewById(R.id.tvMsgL);
view.setOnClickListener(this);
}
#Override
public void onClick(View view) {
int position = getAdapterPosition();
Conversation.Data selectedNotifiction = mConversation.get(position);
mConversationOnClickHandler.onClickConversation(selectedNotifiction);
}
}
public interface ConversationOnClickHandler {
void onClickConversation(Conversation.Data conversation);
}
public long myTimeInMillis(String givenDateString ){
// String givenDateString = "Tue Apr 23 16:08:28 GMT+05:30 2013";
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
long timeInMilliseconds = 0;
try {
Date mDate = sdf.parse(givenDateString);
timeInMilliseconds = mDate.getTime();
// System.out.println("Date in milli :: " + timeInMilliseconds);
} catch (ParseException e) {
e.printStackTrace();
}
return timeInMilliseconds;
}
}
any help or advice?
And thankyou

in your addAll() function on ConversationsAdapter class
int lastIndex = mConversation.size() - 1;
mConversation.clear();
mConversation.addAll(newList);
notifyItemRangeInserted(lastIndex, newList.size());
this should do the trick

get serial number in recycler view

AmountCartModel.java
public class AmountCartModel {
private String testName;
private String testPrice;
private String serialNumber;
private Integer totalPrice;
public AmountCartModel() {
this.testName = testName;
this.testPrice = testPrice;
this.serialNumber = serialNumber;
this.totalPrice = totalPrice;
}
public String getTestName() {
return testName;
}
public void setTestName(String testName) {
this.testName = testName;
}
public String getTestPrice() {
return testPrice;
}
public void setTestPrice(String testPrice) {
this.testPrice = testPrice;
}
public String getSerialNumber() {
return serialNumber;
}
public void setSerialNumber(String serialNumber) {
this.serialNumber = serialNumber;
}
public Integer getTotalPrice() {
return totalPrice;
}
public void setTotalPrice(Integer totalPrice) {
this.totalPrice = totalPrice;
}
}
AmountCartActivity.java
public class AmountCartActivity extends AppCompatActivity implements View.OnClickListener {
#BindView(R.id.total_price)
TextView totalPriceDisplay;
SharePreferenceManager<LoginModel> sharePreferenceManager;
private RecyclerView recyclerView;
List<AmountCartModel> mydataList ;
private MyAdapter madapter;
Bundle extras ;
String testName="";
String testPrice="";
String totalPrice= "";
int counting = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_amount_cart);
ButterKnife.bind(this);
sharePreferenceManager = new SharePreferenceManager<>(getApplicationContext());
showcenterid(sharePreferenceManager.getUserLoginData(LoginModel.class));
mydataList = new ArrayList<>();
/*
* Getting Values From BUNDLE
* */
extras = getIntent().getExtras();
if (extras != null) {
testName = extras.getString("test_name");
testPrice = extras.getString("test_price");
totalPrice = String.valueOf(extras.getInt("total_price"));
counting = extras.getInt("serialNumber");
//Just add your data in list
AmountCartModel mydata = new AmountCartModel(); // object of Model Class
mydata.setTestName(testName );
mydata.setTestPrice(testPrice);
mydata.setTotalPrice(Integer.valueOf(totalPrice));
mydata.setSerialNumber(counting);
mydataList.add(mydata);
}
madapter=new MyAdapter(mydataList);
madapter.setMyDataList(mydataList);
recyclerView = (RecyclerView)findViewById(R.id.recyler_amount_cart);
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(madapter);
}
}
AmountCartAdapter.java
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder>
{
private List<AmountCartModel> context;
private List<AmountCartModel> myDataList;
public MyAdapter(List<AmountCartModel> context) {
this.context = context;
myDataList = new ArrayList<>();
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
{
// Replace with your layout
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.amount_cart_row, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
// Set Your Data here to yout Layout Components..
// to get Amount
/* myDataList.get(position).getTestName();
myDataList.get(position).getTestPrice();*/
holder.testName.setText(myDataList.get(position).getTestName());
holder.testPrice.setText(myDataList.get(position).getTestPrice());
holder.textView2.setText(myDataList.get(position).getSerialNumber());
}
#Override
public int getItemCount() {
/*if (myDataList.size() != 0) {
// return Size of List if not empty!
return myDataList.size();
}
return 0;*/
return myDataList.size();
}
public void setMyDataList(List<AmountCartModel> myDataList) {
// getting list from Fragment.
this.myDataList = myDataList;
notifyDataSetChanged();
}
public class ViewHolder extends RecyclerView.ViewHolder {
TextView testName,testPrice,textView2;
public ViewHolder(View itemView) {
super(itemView);
// itemView.findViewById
testName=itemView.findViewById(R.id.test_name_one);
testPrice=itemView.findViewById(R.id.test_price);
textView2=itemView.findViewById(R.id.textView2);
}
}
}
#Override
public void onBackPressed() {
super.onBackPressed();
startActivity(new
Intent(AmountCartActivity.this,HealthServicesActivity.class));
finish();
}
}
HealthCartActivity
public class HealthServicesActivity extends AppCompatActivity implements View.OnClickListener {
private ImageView imlogo;
private TextView Date;
private TextView Time;
private TextView Day;
private ImageView settingsButton;
#BindView(R.id.back_to_add_patient)
TextView backToDashboard;
int totalAmount = 0;
int totalPrice = 0;
String testName = "";
String testPrice = "";
int count = 0;
/*
*Api call
* */
private RecyclerView recyclerView;
private ArrayList<TestListModel> mydataList;
private RecyclerAdapter madapter;
private ArrayList<TestListModel> mydb;
private Button submitButton;
private TextView deviceModeName;
private TextView centerId;
SharePreferenceManager<LoginModel> sharePreferenceManager;
ProgressDialog progressDialog;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_health_services);
ButterKnife.bind(this);
sharePreferenceManager = new SharePreferenceManager<>(getApplicationContext());
imlogo=(ImageView) findViewById(R.id.action_bar_logo);
Day=(TextView) findViewById(R.id.day);
Date=(TextView) findViewById(R.id.date);
Time=(TextView)findViewById(R.id.time);
//backButton=(Button) findViewById(R.id.back_button);
centerId=(TextView)findViewById(R.id.center_id);
deviceModeName=(TextView)findViewById(R.id.device_mode_name);
settingsButton=(ImageView)findViewById(R.id.settings);
submitButton=(Button) findViewById(R.id.submit_button);
dayTimeDisplay();
showcenterid(sharePreferenceManager.getUserLoginData(LoginModel.class));
settingsButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//Creating the instance of PopupMenu
PopupMenu popup = new PopupMenu(HealthServicesActivity.this, settingsButton);
//Inflating the Popup using xml file
popup.getMenuInflater()
.inflate(R.menu.common_navigation_menu, popup.getMenu());
//registering popup with OnMenuItemClickListener
popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
public boolean onMenuItemClick(MenuItem item) {
int id = item.getItemId();
if (id==R.id.home){
startActivity(new Intent(getApplicationContext(), DashBoardActivity.class));
finish();
}
if (id==R.id.my_profile){
startActivity(new Intent(getApplicationContext(), MyProfileActivity.class));
finish();
}
if (id==R.id.change_password){
startActivity(new Intent(getApplicationContext(), ChangePasswordActivity.class));
finish();
}
Toast.makeText(HealthServicesActivity.this, "You Clicked : " + item.getTitle(), Toast.LENGTH_SHORT
).show();
return true;
}
});
popup.show(); //showing popup menu
}
});
progressDialog = new ProgressDialog(HealthServicesActivity.this);
progressDialog.setMessage("Please Wait...");
progressDialog.setCanceledOnTouchOutside(false);
//registerOnline();
initViews();
submitButton.setOnClickListener(this);
backToDashboard.setOnClickListener(this);
}
/*
* Action Bar DATE N TIME
* */
private void dayTimeDisplay(){
SimpleDateFormat sdf1 = new SimpleDateFormat("EEEE");
java.util.Date d = new Date();
String dayOfTheWeek = sdf1.format(d);
Day.setText(dayOfTheWeek);
String currentDateTimeString = DateFormat.getDateInstance().format(new Date());
Date.setText(currentDateTimeString);
Date dt = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("hh:mm aa");
String time1 = sdf.format(dt);
Time.setText(time1);
}
/*
* On Click Listner
* */
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.submit_button:
AtomicInteger sharedOutput = new AtomicInteger(0);
List<TestListModel> stList = ((RecyclerAdapter) madapter)
.getTestList();
for (int i = 0; i < stList.size(); i++) {
TestListModel singleStudent = stList.get(i);
if (singleStudent.isSelected() == true) {
//testListId = testListId+ "\n" + singleStudent.getTestlist_id().toString();
testName = testName + "\n" + singleStudent.getTest_name().toString();
testPrice = testPrice+"\n" + singleStudent.getTest_price().toString();
//count = singleStudent.setSerial_number("\n" +i);
//singleStudent.getSerial_number(count);
count ++;
/* count = sharedOutput.get() + 1;
System.out.println(count);
sharedOutput.incrementAndGet();*/
totalAmount = Integer.parseInt(stList.get(i).getTest_price());
totalPrice = totalPrice + totalAmount;
}
}
Toast.makeText(HealthServicesActivity.this,
"Selected Lists: \n" + testName+ "" + testPrice, Toast.LENGTH_LONG)
.show();
Intent in= new Intent(HealthServicesActivity.this, AmountCartActivity.class);
in.putExtra("test_name", testName);
in.putExtra("test_price", testPrice);
in.putExtra("total_price", totalPrice);
in.putExtra("serial_number", count);
startActivity(in);
finish();
break;
/** back Button Click
* */
case R.id.back_to_add_patient:
startActivity(new Intent(getApplicationContext(), PatientActivity.class));
finish();
break;
default:
break;
}
}
/** show center Id in action bar
* */
#Override
protected void onResume() {
super.onResume();
showcenterid(sharePreferenceManager.getUserLoginData(LoginModel.class));
}
private void showcenterid(LoginModel userLoginData) {
centerId.setText(userLoginData.getResult().getGenCenterId());
centerId.setText(userLoginData.getResult().getGenCenterId().toUpperCase());
deviceModeName.setText(userLoginData.getResult().getDeviceModeName());
}
private void initViews() {
recyclerView = (RecyclerView)findViewById(R.id.test_list_recycler_view);
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
recyclerView.setLayoutManager(layoutManager);
loadJSON();
}
private void loadJSON() {
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(" http://192.168.1.80/aoplnew/api/")
// .baseUrl("https://earthquake.usgs.gov/fdsnws/event/1/query?")
.addConverterFactory(GsonConverterFactory.create())
.build();
ApiInterface request = retrofit.create(ApiInterface.class);
Call<JSONResponse> call = request.getTestLists();
call.enqueue(new Callback<JSONResponse>() {
#Override
public void onResponse(Call<JSONResponse> call, Response<JSONResponse> response) {
JSONResponse jsonResponse = response.body();
mydataList = new ArrayList<>(Arrays.asList(jsonResponse.getResult()));
madapter = new RecyclerAdapter(mydataList);
recyclerView.setAdapter(madapter);
}
#Override
public void onFailure(Call<JSONResponse> call, Throwable t) {
Log.d("Error",t.getMessage());
}
});
}
}
I am trying to display serial number to my AmountCartActivity of recycler view whichever I am selecting from previous HealthCartActivity using checkbox. And, I have implemented some code but I am not getting how to get the serial number.

Well, you can work-around. And you won't have to keep serialNumber variable in model just to track it's position.
You can use position parameter variable of onBindViewHolder() for serial number and counting.
i.e.
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
//here position is unique for every item in the list, so, you can use it as a serial number
// also, since it's starting from 0, you should add 1 with it, in case you wanna start from 1
// holder.textView2.setText(myDataList.get(position).getSerialNumber());
holder.textView2.setText("S.No. "+(position+1));
}

#Override
public void onBindViewHolder(ViewHolder holder, int position)
holder.id.setText(String.valueOf(" "+(position+1)));
Use above method.

You have to add serialNumber to your AmountCartModel.This will fix your problem

Put an id in your AmountCartModel as below;
public class AmountCartModel {
private int serialNumber; // add this line
private String testName;
private String testPrice;
private Integer totalPrice;
public AmountCartModel() {
this.serialNumber= serialNumber; // add this line
this.testName = testName;
this.testPrice = testPrice;
this.totalPrice = totalPrice;
}
public int getSerialNumber (){
} // add this line
public void setSerialNumber(int serialNumber) {
}// add this line also
Then retrieve this serialNumber from each view.
Since you are sending the intent form onBackPressed(); attach the list as an extra to the intent as follows,
#Override
public void onBackPressed() {
super.onBackPressed();
startActivity(new
Intent(AmountCartActivity.this,HealthServicesActivity.class).putParcelableArrayList("the list", mDataList));
finish();
}
Please ensure the object (AmountCarModel) you are making a list from extends Parcelable, and catch it in the HealthServiceActivity in onResume()
Alternatively, and probably the best way, is to attach the serialNumber inside the HealthServiceActivity in the Retrofit onResponse() method as below;
#Override
public void onResponse(Call<JSONResponse> call, Response<JSONResponse> response) {
JSONResponse jsonResponse = response.body();
data = new ArrayList<>(Arrays.asList(jsonResponse.getResult()));
if (data != null){
for (int i = 0; i<data.size(); i++) {
data.setSerialNumber(i);}}
madapter = new RecyclerAdapter(data);
recyclerView.setAdapter(madapter);
}

In AmountCartModel serialNumber is of String datatype
and while putting object you are setting
counting = extras.getInt("serialNumber");
//Just add your data in list
AmountCartModel mydata = new AmountCartModel(); // object of Model Class
mydata.setTestName(testName );
mydata.setTestPrice(testPrice);
mydata.setTotalPrice(Integer.valueOf(totalPrice));
mydata.setSerialNumber(counting);
and you are storing it in ArrayList without for loop so every time only one object will get inclued in your arraylist

try this way
int count = 0;
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.submit_button:
int totalAmount = 0;
int totalPrice = 0;
String testName = "";
String testPrice="";
List<TestListModel> stList = ((RecyclerAdapter) madapter)
.getTestList();
for (int i = 0; i < stList.size(); i++) {
TestListModel singleStudent = stList.get(i);
//AmountCartModel serialNumber = stList.get(i);
if (singleStudent.isSelected() == true) {
testName = testName + "\n" + singleStudent.getTest_name().toString();
testPrice = testPrice+"\n" + singleStudent.getTest_price().toString();
count++;
totalAmount = Integer.parseInt(stList.get(i).getTest_price());
totalPrice = totalPrice + totalAmount;
}
}
Toast.makeText(HealthServicesActivity.this,
"Selected Lists: \n" + testName+ "" + testPrice, Toast.LENGTH_LONG)
.show();
Intent in= new Intent(HealthServicesActivity.this, AmountCartActivity.class);
in.putExtra("test_name", testName);
in.putExtra("test_price", testPrice);
in.putExtra("total_price", totalPrice);
in.putExtra("serialNumber", count);
startActivity(in);
finish();
break;
/** back Button Click
* */
case R.id.back_to_add_patient:
startActivity(new Intent(getApplicationContext(), PatientActivity.class));
finish();
break;
default:
break;
}
}

I found the answer. I have done code for serial number like below. Here I am getting serial number in front of the elements. In this code I took one int variable and initialized with value 1. After that I call srNo variable in for loop then incremented at the end of the for loop.
int srNo = 1;
List < TestListModel > stList = ((RecyclerAdapter) madapter)
.getTestList();
for (int i = 0; i < stList.size(); i++) {
TestListModel singleStudent = stList.get(i);
if (singleStudent.isSelected() == true) {
testListId = testListId + "\n" + Integer.parseInt(String.valueOf(srNo));
testName = testName + "\n" + singleStudent.getTest_name().toString();
testPrice = testPrice + "\n" + singleStudent.getTest_price().toString();
srNo++;
totalAmount = Integer.parseInt(stList.get(i).getTest_price());
totalPrice = totalPrice + totalAmount;
}
}

How can i save changed data from RecyclerView and upload the changes

I am processing an image and getting 'data' from it. Then i show those in RecyclerView. I correct some data in RecyclerView if necessary. How to upload the corrected data with all the rest, Because even if the correction shows in RecyclerView it is not uploading the change ,Rather mistaken data are being uploaded. Can someone please help i am stuck for several days...
This is part of my mainActivity where i am adding the data to Recyclerview?
TextExtractionActivity.class
if (fileDirectory.isDirectory()) {
listCroppedImages.clear();
EmptyViewCroppedImage.setVisibility(View.GONE);
RVCroppedImages.setVisibility(View.VISIBLE);
listCroppedImages.clear();
String PhotoPath[] = new String[100];
final String StudentMatric[] = new String[100];
final String AttendanceRecord[] = new String[100];
for (int i = 1; i <= fileDirectory.listFiles().length; i++) {
PhotoPath[i] = croppedImageDirectory + i + ".jpg";
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Bitmap croppedimageold = BitmapFactory.decodeFile(PhotoPath[i], options);
Bitmap croppedimagenew = Bitmap.createScaledBitmap(croppedimageold, 460, 66, true);
StudentMatric[i] = TextImageProcess(croppedimagenew);
AttendanceRecord[i] = CircleDetection(croppedimagenew, StudentMatric[i]);
listCroppedImages.add(new CroppedImageModel(String.valueOf(i), PhotoPath[i], StudentMatric[i], AttendanceRecord[i]));
btnUploadAttendance.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
for (int x = 1; x <= listCroppedImages.size(); x++) {
UploadData(StudentMatric[x], AttendanceRecord[x], x);
}
}
});
}
} else {
EmptyViewCroppedImage.setVisibility(View.VISIBLE);
RVCroppedImages.setVisibility(View.GONE);
}
-----------------------------------------------------------------------
public void UploadData(final String StudentMatric, final String AttendanceRecord, final int x) {
ProgressUploadAttendance.setVisibility(View.VISIBLE);
Query query = StudentsRef.orderByKey().equalTo(StudentMatric);
query.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if (dataSnapshot.exists()) {
int progress = x / listCroppedImages.size() * 100;
DatabaseReference StudentMatricRef = StudentsRef.child(StudentMatric).child("Attendance").push();
StudentMatricRef.child("Status").setValue(AttendanceRecord);
StudentMatricRef.child("Date").setValue(getCurrentDate());
ProgressUploadAttendance.setProgress(progress);
} else {
Toast.makeText(TextExtractionActivity.this, "Could not Find " + StudentMatric, Toast.LENGTH_LONG).show();
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
throw databaseError.toException(); // don't ignore errors
}
});
}
"RecyclerViewAdapterCroppedImages.class"
class RecyclerViewAdapterCroppedImages extends RecyclerView.Adapter<RecyclerViewAdapterCroppedImages.CroppedimageViewHolder> {
private Context mContext;
private List<CroppedImageModel> mData;
int x =0;
// private String StudentMatric, studentMatric, AttendanceStatus, attendanceStatus;
public RecyclerViewAdapterCroppedImages() { } //Constructor
public RecyclerViewAdapterCroppedImages(Context mContext, List<CroppedImageModel> mData) {
this.mContext = mContext;
this.mData = mData;
}
#Override
public CroppedimageViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View croppedimageview;
LayoutInflater mInflater = LayoutInflater.from(mContext);
croppedimageview = mInflater.inflate(R.layout.item_cropped_image, parent, false);
return new CroppedimageViewHolder(croppedimageview);
}
#Override
public void onBindViewHolder(final CroppedimageViewHolder holder, final int position) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Bitmap croppedimageold = BitmapFactory.decodeFile(mData.get(position).getCroppedImagePath(), options);
Bitmap croppedimagenew = Bitmap.createScaledBitmap(croppedimageold, 528, 80, true);
holder.StudentNo.setText(mData.get(position).getStudentNo());
holder.CroppedImage.setImageBitmap(croppedimagenew);
holder.StudentId.setText(mData.get(position).getStudentMatric());
holder.StudentStatus.setText(mData.get(position).getAttendanceRecord());
holder.StudentStatus.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (mData.get(position).getAttendanceRecord().equals("Failed")) {
holder.StudentStatus.setText("Present");
} else if (mData.get(position).getAttendanceRecord().equals("Present")) {
holder.StudentStatus.setText("Absent");
} else if (mData.get(position).getAttendanceRecord().equals("Absent")) {
holder.StudentStatus.setText("Present");
}
}
});
}
#Override
public int getItemCount() {
return mData.size();
}
class CroppedimageViewHolder extends RecyclerView.ViewHolder {
TextView StudentNo, StudentId, StudentStatus;
ImageView CroppedImage;
private CroppedimageViewHolder(View itemView) {
super(itemView);
StudentNo = itemView.findViewById(R.id.tvtxtprocessstudentno);
CroppedImage = itemView.findViewById(R.id.ivcroppedimage);
StudentId = itemView.findViewById(R.id.tvtxtprocessstudentid);
StudentStatus = itemView.findViewById(R.id.tvtxtprocessstudentstatus);
}
}
}

I found the solution. The thing is i thought i have to notifiyOnDatachange by adapter which located in my main activity. but i did not have to..
in my RecyclerViewAdapterCroppedImage.class
final CroppedImageModel changedRecord = mData.get(position);
holder.IVattendance.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
switch (mData.get(position).getAttendanceRecord())
{
case "Failed":
mData.get(position).setAttendanceRecord("Present");
correctionAttendance(position, changedRecord);//code
break;
case "Present":
mData.get(position).setAttendanceRecord("Absent");
correctionAttendance(position, changedRecord);
break;
case "Absent":
mData.get(position).setAttendanceRecord("Present");
correctionAttendance(position, changedRecord);
break;
default:
break;
}
}
});
public void correctionAttendance(int position, CroppedImageModel attendanceRecord ) {
mData.set(position, attendanceRecord);
notifyItemChanged(position);
notifyDataSetChanged();
}
and in my TextExtractionActivity.class i fetch the data directly from Adapter rather than where i am processing and sending the data to Adapter.
btnUploadAttendance.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
for (int x = 0; x < listCroppedImages.size(); x++) {
UploadData(listCroppedImages.get(x).getStudentMatric(),listCroppedImages.get(x).getAttendanceRecord(),x);
}
}
});
and lastly my UploadData() remain same as stated in the question..
Thank you anyone who intend to answer or provide format correction..

My data of recyclerview loss in scroll down

I have a recyclerview and set text some textview in it. when I scroll down or my fragment goes to onPause state my data loss.
what can i do?
import static com.test.mohammaddvi.snappfood.Adapter.SectionListDataAdapter.decodeSampledBitmapFromResource;
public class RecyclerViewMenuFragmentAdapter extends RecyclerView.Adapter<RecyclerViewMenuFragmentAdapter.SingleItemInMenuFragment> {
private ArrayList<Food> foodList;
private Context mContext;
public RecyclerViewMenuFragmentAdapter(ArrayList<Food> foodList, Context mContext) {
this.foodList = foodList;
this.mContext = mContext;
}
#NonNull
#Override
public RecyclerViewMenuFragmentAdapter.SingleItemInMenuFragment onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.foodlist, null);
return new RecyclerViewMenuFragmentAdapter.SingleItemInMenuFragment(v);
}
#Override
public void onBindViewHolder(final RecyclerViewMenuFragmentAdapter.SingleItemInMenuFragment holder, int position) {
Food food = foodList.get(position);
holder.foodName.setText(food.getName());
holder.foodDetails.setText(food.getDetails());
holder.foodPrice.setText(food.getPrice() + " تومان ");
holder.foodOrderNumber.setVisibility(View.INVISIBLE);
holder.foodMinusButton.setVisibility(View.INVISIBLE);
holder.foodOrderNumber.setText(0 + "");
holder.foodImage.setImageBitmap(decodeSampledBitmapFromResource(mContext.getResources(), mContext.getResources().getIdentifier(food.getImage(),
"drawable", mContext.getPackageName()), 50, 50));
handleClick(holder, position);
}
private void handleClick(final SingleItemInMenuFragment holder, final int position) {
holder.foodPlusButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int orderNumber = Integer.parseInt(holder.foodOrderNumber.getText().toString());
holder.foodOrderNumber.setText(orderNumber + 1 + "");
holder.foodOrderNumber.setVisibility(View.VISIBLE);
holder.foodMinusButton.setVisibility(View.VISIBLE);
}
});
holder.foodMinusButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int orderNumber = Integer.parseInt(holder.foodOrderNumber.getText().toString());
if (orderNumber > 1) {
holder.foodOrderNumber.setText(orderNumber - 1 + "");
holder.foodOrderNumber.setVisibility(View.VISIBLE);
}
if (orderNumber == 1) {
holder.foodOrderNumber.setText(orderNumber - 1 + "");
holder.foodOrderNumber.setVisibility(View.INVISIBLE);
holder.foodMinusButton.setVisibility(View.INVISIBLE);
}
}
});
}
#Override
public int getItemCount() {
return (null != foodList ? foodList.size() : 0);
}
public class SingleItemInMenuFragment extends RecyclerView.ViewHolder {
TextView foodName;
TextView foodPrice;
Button foodPlusButton;
Button foodMinusButton;
TextView foodOrderNumber;
ImageView foodImage;
TextView foodDetails;
SingleItemInMenuFragment(View itemView) {
super(itemView);
this.foodName = itemView.findViewById(R.id.foodName);
this.foodImage = itemView.findViewById(R.id.imageFood);
this.foodPrice = itemView.findViewById(R.id.foodPrice);
this.foodDetails = itemView.findViewById(R.id.foodDetails);
this.foodPlusButton = itemView.findViewById(R.id.plusbutton);
this.foodMinusButton = itemView.findViewById(R.id.minusbutton);
this.foodOrderNumber = itemView.findViewById(R.id.ordernumber);
}
}
}
and this is my fragment that i use recyclerview in that:
public class MenuFragment extends Fragment{
private static final String TAG = "menufragment";
ArrayList<Food> allfoods = new ArrayList<>();
RecyclerView recyclerview;
private static Bundle bundle;
private final String KEY_RECYCLER_STATE= "recycler_state";
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.menufragment, container, false);
}
#Override
public void onStart() {
super.onStart();
String jsonFilePath = "foods.json";
recyclerview = getActivity().findViewById(R.id.lstitems);
RecyclerViewMenuFragmentAdapter adapter = new RecyclerViewMenuFragmentAdapter(allfoods, getContext());
recyclerview.setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false));
recyclerview.setHasFixedSize(true);
recyclerview.setAdapter(adapter);
parsJson(jsonFilePath);
}
//this method is for read a local json and return a string
public String readLocalJson(String jsonFile) {
String json;
try {
InputStream is = getActivity().getAssets().open(jsonFile);
int size = is.available();
byte[] buffer = new byte[size];
is.read(buffer);
is.close();
json = new String(buffer, "UTF-8");
} catch (IOException e) {
e.printStackTrace();
return null;
}
return json;
}
public void parsJson(String jsonFilePath) {
try {
JSONObject obj = new JSONObject(readLocalJson(jsonFilePath));
JSONArray jsonArray = obj.getJSONArray("results");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
String image = jsonObject.getString("image");
JSONArray jsonArrayFoot = jsonObject.getJSONArray("foots");
for (int j = 0; j < jsonArrayFoot.length(); j++) {
JSONObject jsonObjectFoot = jsonArrayFoot.getJSONObject(j);
String foodName = jsonObjectFoot.getString("name");
String fooddetails = jsonObjectFoot.getString("fooddetails");
String price = jsonObjectFoot.getString("price");
allfoods.add(new Food(foodName, price, fooddetails, image));
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}

Basically, you just initialized the data on onStart which will eventually called when your activity/fragment is resumed, and because of that all data you've changed was overwritten to initial data.
Move your onStart initialization to onViewCreated:
#Override
public void onViewCreated() {
super.onViewCreated();
String jsonFilePath = "foods.json";
recyclerview = getActivity().findViewById(R.id.lstitems);
RecyclerViewMenuFragmentAdapter adapter = new RecyclerViewMenuFragmentAdapter(allfoods, getContext());
recyclerview.setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false));
recyclerview.setHasFixedSize(true);
recyclerview.setAdapter(adapter);
parsJson(jsonFilePath);
}
And for scrolling, its normal because RecyclerView recycles the view from the list above but the data is not, so what you need to do is store values from the list source.
#Override
public void onBindViewHolder(final RecyclerViewMenuFragmentAdapter.SingleItemInMenuFragment holder, int position) {
Food food = foodList.get(position);
holder.foodName.setText(food.getName());
holder.foodDetails.setText(food.getDetails());
holder.foodPrice.setText(food.getPrice() + " تومان ");
holder.foodOrderNumber.setVisibility(View.INVISIBLE);
holder.foodMinusButton.setVisibility(View.INVISIBLE);
holder.foodOrderNumber.setText(food.getFoodOrderNumber());
holder.foodImage.setImageBitmap(decodeSampledBitmapFromResource(mContext.getResources(), mContext.getResources().getIdentifier(food.getImage(),
"drawable", mContext.getPackageName()), 50, 50));
handleClick(holder, position);
}
private void handleClick(final SingleItemInMenuFragment holder, final int position) {
holder.foodPlusButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int orderNumber = Integer.parseInt(holder.foodOrderNumber.getText().toString());
int newOrderNumber = orderNumber + 1;
Food food = foodList.get(position);
food.setFoodOrderNumber(newOrderNumber);
holder.foodOrderNumber.setText(newOrderNumber + "");
holder.foodOrderNumber.setVisibility(View.VISIBLE);
holder.foodMinusButton.setVisibility(View.VISIBLE);
}
});
holder.foodMinusButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Food food = foodList.get(position);
int orderNumber = food.getFoodOrderNumber();
if (orderNumber > 1) {
int newOrderNumber = orderNumber - 1;
food.setFoodOrderNumber(newOrderNumber);
holder.foodOrderNumber.setText(newOrderNumber + "");
holder.foodOrderNumber.setVisibility(View.VISIBLE);
}
if (orderNumber == 1) {
int newOrderNumber = orderNumber - 1;
food.setFoodOrderNumber(newOrderNumber);
holder.foodOrderNumber.setText(newOrderNumber + "");
holder.foodOrderNumber.setVisibility(View.INVISIBLE);
holder.foodMinusButton.setVisibility(View.INVISIBLE);
}
}
});
}
And on your Food object just add this field and functions:
public class Food {
int foodOrderNumber;
public int getFoodOrderNumber() {
return foodOrderNumber;
}
public void setFoodOrderNumber(int foodOrderNumber) {
this.foodOrderNumber = foodOrderNumber;
}
}

add this line to your onBindViewHolder method and check again if the problem still exits:
holder.setIsRecyclable(false);

changing items in recyclerview adapter

I inserted/removing from particular position in ArrayList onBindViewHolder . Now , i want to show this modified list on recyclerview .
Adapter Code:
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyAdapterViewHolder> {
private List<Info> dataList;
private Context mAct;
private List<Info> totalCandidatesList;
private String TAG = "OWD";
public MyAdapter(List<Info> dataList, Context context) {
this.dataList = dataList;
this.mAct = context;
}
public void addApplications(List<Info> candidates) {
if(this.totalCandidatesList == null){
totalCandidatesList = new ArrayList<>();
}
this.dataList.addAll(candidates);
this.totalCandidatesList.addAll(candidates);
this.notifyItemRangeInserted(0, candidates.size() - 1);
}
public void clearApplications() {
int size = this.dataList.size();
if (size > 0) {
for (int i = 0; i < size; i++) {
dataList.remove(0);
totalCandidatesList.remove(0);
}
this.notifyItemRangeRemoved(0, size);
}
}
#Override
public int getItemCount() {
return dataList.size();
}
public void onBindViewHolder(MyAdapterViewHolder mAdapterViewHolder, int i) {
if (i % 2 == 1) {
mAdapterViewHolder.cardView.setCardBackgroundColor(Color.parseColor("#ecf5fe"));
mAdapterViewHolder.layoutRipple.setBackgroundColor(Color.parseColor("#ecf5fe"));
} else {
mAdapterViewHolder.cardView.setCardBackgroundColor(Color.parseColor("#e2f1ff"));
mAdapterViewHolder.layoutRipple.setBackgroundColor(Color.parseColor("#e2f1ff"));
}
final WorkHolders workHolders = SingleTon.getInstance().getWorkHolders();
final String customerName = SingleTon.getInstance().getCustomerName();
String siteName = null;
if(customerName !=null) {
String[] sitenamearray = customerName.split("--");
if (sitenamearray.length > 1) {
siteName = sitenamearray[1];
}
}
final Info ci = dataList.get(i);
mAdapterViewHolder.title.setText(ci.heading1);
mAdapterViewHolder.jobNumber.setText(ci.heading2);
mAdapterViewHolder.distance.setText(ci.distance);
if(siteName != null && siteName.equalsIgnoreCase(ci.heading2)) {
mAdapterViewHolder.cardView.setCardBackgroundColor(Color.parseColor("#a7ffeb"));
mAdapterViewHolder.layoutRipple.setBackgroundColor(Color.parseColor("#a7ffeb"));
if(i!=0){
> //Here i removed and inserted item in list .
> dataList.remove(i);
> dataList.add(0,ci);
}
}
final String finalSiteName = siteName;
final Bundle bundle = new Bundle();
mAdapterViewHolder.layoutRipple.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Fragment fragment;
String name = ci.heading1 + "--" + ci.heading2;
Log.d(TAG,"new Jobname : "+ name);
if (finalSiteName == null || finalSiteName.equalsIgnoreCase("")) {
bundle.putString("name", customerName);
bundle.putString("oldwork", "yes");
bundle.putString("running_job_selected", "yes");
} else {
Log.d(TAG,"StartedOn Before Sending Bundle :" + workHolders.startedOn);
Log.d(TAG, "running Job is not selected");
bundle.putString("name", name);
bundle.putString("oldwork", "yes");
bundle.putString("running_job_selected", "no");
}
FragmentTransaction ft = ((FragmentActivity) mAct).getSupportFragmentManager().beginTransaction();
ft.setCustomAnimations(R.anim.glide_fragment_horizontal_in, R.anim.glide_fragment_horizontal_out);
fragment = new WorkDescriptionFragment();
fragment.setArguments(bundle);
ft.addToBackStack("myadapter");
ft.replace(R.id.content_frame, fragment).commit();
SingleTon.getInstance().setWorkStatus("start");
}
});
}
#Override
public MyAdapterViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View itemView = LayoutInflater.
from(viewGroup.getContext()).
inflate(R.layout.single_item1, viewGroup, false);
return new MyAdapterViewHolder(itemView);
}
public static class MyAdapterViewHolder extends RecyclerView.ViewHolder {
protected TextView title;
protected TextView dateTime;
protected TextView distance;
protected TextView jobNumber;
protected CardView cardView;
protected LayoutRipple layoutRipple;
public MyAdapterViewHolder(View v) {
super(v);
title = (TextView) v.findViewById(R.id.title);
dateTime = (TextView) v.findViewById(R.id.dateTimeTextView);
distance = (TextView) v.findViewById(R.id.distanceTextView);
jobNumber = (TextView) v.findViewById(R.id.jobNumber);
cardView = (CardView) v.findViewById(R.id.cv);
layoutRipple = (LayoutRipple)v.findViewById(R.id.singleitemripple);
}
}
}
you will see following lines in above code where i am removing/inserting item in a list onBindview and would like to show same in recyclerview .
But right now i am getting normal datalist(unchanged) .
//Here i removed and inserted item in list .
dataList.remove(i);
dataList.add(0,ci);
Please help me to achieve this .

onBindViewHolder is not the place where you should update your adapter. The staregy is to update item inside your Adapter data list and then notifyDataChanged(). For example thise are the methods for updating info inside my adapter:
public void update(Track track) {
tracks.remove(track);
add(track);
}
public void add (Track track) {
tracks.add(track);
this.notifyDataSetChanged();
}
public void addTracks(List<Track> tracks){
this.tracks.addAll(tracks);
this.notifyDataSetChanged();
}
public void clearAndAddTracks(List<Track> tracks) {
for (int i = 0; i < this.tracks.size(); i++) {
if (!this.tracks.get(i).isRunning()){
}
}
this.tracks.clear();
this.tracks.addAll(tracks);
this.notifyDataSetChanged();
}