Develop Reference

(Rest Api) Recycler View with Accept and Decline a request Buttons in each Row in android

I am developing an android application based on Rest Api remote data, in which I have made one RecyclerView. I have added 2 buttons with each row in RecyclerView. These 2 buttons are Accept and Decline. When user selects accept button certain portion of the JSON Property have to change to True and if selects decline button certain portion of the JSON Property have to change to false and #POST it. How can I do it?
I’m new in Rest Api with RecyclerView, so if you know the solution please help, thanks.
What i have been done so far:
My main activity:
public class ViewRefundRequest extends AppCompatActivity{
private RecyclerView viewRefundRequestRecylcerView;
private RecyclerView.LayoutManager layoutManager;
private AdminViewRefundRequestAdapter adapter;
List<ViewRefundRequestModel> vrrList;
RelativeLayout vrrMainLayout;
AdminViewRefundRequestAdapter.RecyclerViewClickListener listener;
ProgressBar progressBarVRR;
ApiService serviceVRR;
TokenManager tokenManagerVrr;
Call<List<ViewRefundRequestModel>> callViewRefundRequestData;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_refund_request);
tokenManagerVrr = TokenManager.getInstance(getSharedPreferences("prefs", MODE_PRIVATE));
serviceVRR = RetrofitBuilder.createServiceWithAuth(ApiService.class, tokenManagerVrr);
progressBarVRR = (ProgressBar) findViewById(R.id.viewRefundRequestProgressBar);
viewRefundRequestRecylcerView = (RecyclerView) findViewById(R.id.viewRefundRequestRecylcerView);
layoutManager = new LinearLayoutManager(this);
viewRefundRequestRecylcerView.setLayoutManager(layoutManager);
listener = new AdminViewRefundRequestAdapter.RecyclerViewClickListener() {
#Override
public void onRowClick(View view, int position) {
}
#Override
public void onButtonYesClick(View view, int position) {
int acceptStatusCode = 110;
final int id = vrrList.get(position).getId();
//final int statusCode = vrrList.get(position).getRefundStatus();
acceptRequest(id, acceptStatusCode);
adapter.notifyDataSetChanged();
}
#Override
public void onButtonNoClick(View view, int position) {
}
};
//Rest Api call
allViewRefundRequestData();
}
private void allViewRefundRequestData() {
progressBarVRR.setVisibility(View.VISIBLE);
callViewRefundRequestData = serviceVRR.getAllViewRefundRequest();
callViewRefundRequestData.enqueue(new Callback<List<ViewRefundRequestModel>>() {
#Override
public void onResponse(#NotNull Call<List<ViewRefundRequestModel>> call, #NotNull Response<List<ViewRefundRequestModel>> response) {
progressBarVRR.setVisibility(View.GONE);
if (response.isSuccessful() && response.body() != null){
vrrList = response.body();
adapter = new AdminViewRefundRequestAdapter(vrrList, ViewRefundRequest.this, listener);
viewRefundRequestRecylcerView.setAdapter(adapter);
adapter.notifyDataSetChanged();
}else {
if (response.code() == 401) {
startActivity(new Intent(ViewRefundRequest.this, LoginActivity.class));
finish();
tokenManagerVrr.deleteToken();
Toast.makeText(ViewRefundRequest.this, "User session expired, Login again", Toast.LENGTH_LONG).show();
}
}
}
#Override
public void onFailure(#NotNull Call<List<ViewRefundRequestModel>> call, #NotNull Throwable t) {
progressBarVRR.setVisibility(View.GONE);
Snackbar snackbar = Snackbar.make(findViewById(android.R.id.content), "Network Status: " + t.getMessage(), Snackbar.LENGTH_LONG);
View snackbarView = snackbar.getView();
snackbarView.setBackgroundColor(Color.parseColor("#f5003d"));
TextView tv = (TextView) snackbarView.findViewById(R.id.snackbar_text);
tv.setTextColor(Color.WHITE);
snackbar.show();
}
});
}
public void acceptRequest(final int id, final int statusCode){
Call<ViewRefundRequestModel> callAccepted = serviceVRR.acceptRefundRequest(id, statusCode);
callAccepted.enqueue(new Callback<ViewRefundRequestModel>() {
#Override
public void onResponse(Call<ViewRefundRequestModel> call, Response<ViewRefundRequestModel> response) {
Snackbar snackbar = Snackbar.make(vrrMainLayout, "Accepted", Snackbar.LENGTH_SHORT);
View snackbarView = snackbar.getView();
snackbarView.setBackgroundColor(Color.parseColor("#5ec639"));
TextView tv = (TextView) snackbarView.findViewById(R.id.snackbar_text);
tv.setTextSize(16);
tv.setTextAlignment(View.TEXT_ALIGNMENT_CENTER);
tv.setTypeface(tv.getTypeface(), Typeface.BOLD);
tv.setTextColor(Color.WHITE);
snackbar.show();
}
#Override
public void onFailure(Call<ViewRefundRequestModel> call, Throwable t) {
}
});
}
public void declineRequest(final int id, Integer statusCode, String noteRefund){
Call<ViewRefundRequestModel> callDeclined = serviceVRR.cancelRefundRequest(id, statusCode, noteRefund);
callDeclined.enqueue(new Callback<ViewRefundRequestModel>() {
#Override
public void onResponse(Call<ViewRefundRequestModel> call, Response<ViewRefundRequestModel> response) {
}
#Override
public void onFailure(Call<ViewRefundRequestModel> call, Throwable t) {
}
});
}
#Override
protected void onDestroy() {
super.onDestroy();
if (callViewRefundRequestData != null) {
callViewRefundRequestData.cancel();
callViewRefundRequestData = null;
}
}
}
My adapter class:
public class AdminViewRefundRequestAdapter extends BaseAdapter {
private List<ViewRefundRequestModel> viewRefundRequestModels;
List<ViewRefundRequestModel> viewRefundRequestModels;
private Context context;
private RecyclerViewClickListener mListener;
public AdminViewRefundRequestAdapter(List<ViewRefundRequestModel> viewRefundRequestModels, Context context, RecyclerViewClickListener listener) {
this.viewRefundRequestModels = viewRefundRequestModels;
this.context = context;
this.mListener = listener;
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.model_view_refund_reques, parent, false);
return new MyViewHolder(view, mListener);
}
#Override
public void onBindViewHolder(#NonNull final MyViewHolder holder, int position) {
final ViewRefundRequestModel thisModelResponse = viewRefundRequestModels.get(position);
Patient patient = thisModelResponse.getPatient();
String patientName= patient.getFirstName()+" "+patient.getLastName();
Item item =thisModelResponse.getItem();
String itemName= item.getName();
ItemCategory itemCategory = item.getItemCategory();
String itemCategoryName = itemCategory.getName();
holder.patient_name.setText(patientName);
holder.patient_id.setText(Integer.toString(thisModelResponse.getPatientID()));
holder.item_name.setText(itemName);
holder.category.setText(itemCategoryName);
holder.quantity.setText(Integer.toString(thisModelResponse.getServiceQuantity()));
holder.amount.setText(Double.toString(thisModelResponse.getServiceActualPrice()));
holder.discount.setText(Double.toString(thisModelResponse.getDiscount()));
holder.amount_after_discount.setText(Double.toString(thisModelResponse.getServiceListPrice()));
holder.refund_note.setText(thisModelResponse.getRefundNote());
}
#Override
public int getItemCount() {
return viewRefundRequestModels.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private RecyclerViewClickListener mListener;
private TextView patient_name, patient_id, item_name,
category, quantity, amount, discount, amount_after_discount, refund_note;
private Button make_decisionBtn_Yes, make_decisionBtn_No;
private RelativeLayout row_container_vrr;
public MyViewHolder(#NonNull View itemView, RecyclerViewClickListener listener) {
super(itemView);
patient_name = itemView.findViewById(R.id.patient_name_VRR_Model);
patient_id = itemView.findViewById(R.id.patient_id_VRR_Model);
item_name = itemView.findViewById(R.id.item_name_VRR_Model);
category = itemView.findViewById(R.id.category_VRR_Model);
quantity = itemView.findViewById(R.id.quantity_VRR_Model);
amount = itemView.findViewById(R.id.amount_VRR_Model);
discount = itemView.findViewById(R.id.discount_VRR_Model);
amount_after_discount = itemView.findViewById(R.id.amount_after_discount_VRR_Model);
refund_note = itemView.findViewById(R.id.refund_note_VRR_Model);
make_decisionBtn_Yes = itemView.findViewById(R.id.make_decisionBtn01_VRR_Model);
make_decisionBtn_No = itemView.findViewById(R.id.make_decisionBtn02_VRR_Model);
row_container_vrr = itemView.findViewById(R.id.row_container_vrr);
mListener = listener;
row_container_vrr.setOnClickListener(this);
make_decisionBtn_Yes.setOnClickListener(this);
make_decisionBtn_No.setOnClickListener(this);
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.row_container_vrr:
mListener.onRowClick(row_container_vrr, getAdapterPosition());
break;
case R.id.make_decisionBtn01_VRR_Model:
mListener.onButtonYesClick(make_decisionBtn_Yes, getAdapterPosition());
break;
case R.id.make_decisionBtn02_VRR_Model:
mListener.onButtonNoClick(make_decisionBtn_No, getAdapterPosition());
break;
default:
break;
}
}
}
public interface RecyclerViewClickListener {
void onRowClick(View view, int position);
void onButtonYesClick(View view, int position);
void onButtonNoClick(View view, int position);
}
}
Where did I go wrong?
Or should I follow another approach?
If I have to then what is it?

You can do like this first create a Pojo class like
class SendDataModel{
private String email;
private Name name;
private String password;
public String getEmail ()
{
return email;
}
public void setEmail (String email)
{
this.email = email;
}
public Name getName ()
{
return name;
}
public void setName (Name name)
{
this.name = name;
}
public String getPassword ()
{
return password;
}
public void setPassword (String password)
{
this.password = password;
}
#Override
public String toString()
{
return "ClassPojo [email = "+email+", name = "+name+", password = "+password+"]";
}
}
and other Pojo Class like
class Name{
private String lastName;
private String firstName;
public String getLastName ()
{
return lastName;
}
public void setLastName (String lastName)
{
this.lastName = lastName;
}
public String getFirstName ()
{
return firstName;
}
public void setFirstName (String firstName)
{
this.firstName = firstName;
}
#Override
public String toString()
{
return "ClassPojo [lastName = "+lastName+", firstName = "+firstName+"]";
}
}
and set your first and last name like
Name name = new Name();
name.setFirstName();
name.setLastName();
SendDataModel sendDatamodel=new SendDataModel();
sendDatamodel.setName(name);
sendDatamodel.setEmail("yourEmail")
sendDatamodel.setPassword("yourPassword");
and pass your sendDatamodel to your request.
Call<RegisterResponseModel> res = apiService.register(sendDatamodel);
res.enqueue(new Callback<RegisterResponseModel>() {
#Override
public void onResponse(Call<RegisterResponseModel> call,
Response<RegisterResponseModel> response) {
}
#Override
public void onFailure(Call<RegisterResponseModel> call, Throwable t)
{
// Log error here since request failed
Log.e(TAG, t.toString());
}
});

you have to set clickListener in onBindViewHolder like
#Override public void onBindViewHolder(#NonNull final MyViewHolder holder, int position) {
...
holder.row_container_vrr.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
mListener.onRowClick(v, position);
}
);
holder.make_decisionBtn_Yes.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
mListener.onButtonYesClick(v, position);
}
);
holder.make_decisionBtn_No.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
mListener.onButtonNoClick(v, position);
}
);
}

Data from Firebase did not show in RecyclerView

My RecyclerView not show any data from Firebase. I don't see any errors at logcat so I don't know why. I followed guide from youtube video. But still nothing. I'm using android 8.0 and API 27. Hope Somebody can help.
My Main Activity Code:
public class ViewProduct extends AppCompatActivity {
DatabaseReference ref;
ArrayList<Model> list;
private RecyclerView recyclerView;
private RecyclerView.Adapter viewHolder;
private RecyclerView.LayoutManager layoutManager;
SearchView searchView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_product) ;
ref = FirebaseDatabase.getInstance().getReference().child("buddymealplanneruser").
child("Products");
recyclerView = findViewById(R.id.stallproductRecyclerView);
//recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
//SEARCH VIEW
searchView = findViewById(R.id.searchProductStall);
//ADAPTER
list = new ArrayList<>();
viewHolder = new ViewHolder(list);
recyclerView.setAdapter(viewHolder);
}
#Override
protected void onRestart() {
super.onRestart();
if (ref!=null)
{
ref.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
if (dataSnapshot.exists())
{
//list = new ArrayList<>();
list.clear();
for(DataSnapshot ds : dataSnapshot.getChildren())
{
list.add(ds.getValue(Model.class));
}
//ViewHolder viewHolder = new ViewHolder(list);
//recyclerView.setAdapter(viewHolder);
viewHolder.notifyDataSetChanged();
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
Toast.makeText(ViewProduct.this, databaseError.getMessage(),
Toast.LENGTH_SHORT).show();
}
});
}
if (searchView !=null)
{
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String s)
{
return false;
}
#Override
public boolean onQueryTextChange(String s) {
search(s);
return true;
}
});
}
}
private void search(String str) {
ArrayList<Model> myList = new ArrayList<>();
for(Model object : list)
{
if(object.getProductName().toLowerCase().contains(str.toLowerCase()))
{
myList.add(object);
}
}
ViewHolder viewHolder = new ViewHolder(myList);
recyclerView.setAdapter(viewHolder);
}
}
My Adapter:
public class ViewHolder extends RecyclerView.Adapter<ViewHolder.MyViewHolder> {
ArrayList<Model> list;
public ViewHolder (ArrayList<Model> list)
{
this.list=list;
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.row_product, viewGroup,false);
return new MyViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull MyViewHolder myViewHolder, int i) {
myViewHolder.productName.setText(list.get(i).getProductName());
myViewHolder.productCalorie.setText(list.get(i).getProductCalorie());
myViewHolder.StallId.setText(list.get(i).getStallId());
myViewHolder.productType.setText(list.get(i).getProductType());
myViewHolder.productServing.setText(list.get(i).getProductServing());
myViewHolder.statusProduct.setText(list.get(i).getStatusProduct());
}
#Override
public int getItemCount()
{
return list.size();
}
class MyViewHolder extends RecyclerView.ViewHolder
{
TextView productName, productCalorie, StallId;
TextView productType, productServing, statusProduct;
ImageView productImageView;
public MyViewHolder (#NonNull View itemView){
super((itemView));
productName = itemView.findViewById(R.id.productTitle);
productCalorie = itemView.findViewById(R.id.productDescriptionCalorie);
StallId = itemView.findViewById(R.id.productDescriptionStallId);
productType = itemView.findViewById(R.id.productDescriptionType);
productServing=itemView.findViewById(R.id.productDescriptionServing);
statusProduct=itemView.findViewById(R.id.productDescriptionAvailibility);
//productImageView = itemView.findViewById(R.id.productImageView);
}
}
}
My Model :
package com.example.buddymealplannerstall.Child;
import android.view.Display;
public class Model {
//String productName, productImage, productCalorie, StallId, productType, productServing, statusProduct;
private String StallId;
private String productCalorie;
private String productImage;
private String productName;
private String productServing;
private String productType;
private String statusProduct;
public Model (String StallId,
String productCalorie,
String productImage,
String productName,
String productServing,
String productType,
String statusProduct){
this.StallId = StallId;
this.productCalorie = productCalorie;
this.productImage = productImage;
this.productName = productName;
this.productServing = productServing;
this.productType = productType;
this.statusProduct = statusProduct;
}
public Model(){
}
public String getStallId() {
return StallId;
}
public void setStallId(String stallId) {
StallId = stallId;
}
public String getProductCalorie() {
return productCalorie;
}
public void setProductCalorie(String productCalorie) {
this.productCalorie = productCalorie;
}
public String getProductImage() {
return productImage;
}
public void setProductImage(String productImage) {
this.productImage = productImage;
}
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
public String getProductServing() {
return productServing;
}
public void setProductServing(String productServing) {
this.productServing = productServing;
}
public String getProductType() {
return productType;
}
public void setProductType(String productType) {
this.productType = productType;
}
public String getStatusProduct() {
return statusProduct;
}
public void setStatusProduct(String statusProduct) {
this.statusProduct = statusProduct;
}
}
Screen Shot of my firebase and my apps.
firebase
my app

According to your comment:
yes, buddymealplanner is my project's name
Please note that there is no need to add the name of your project as a child in the reference. So please change the following line of code:
ref = FirebaseDatabase.getInstance().getReference().child("buddymealplanneruser").
child("Products");
Simply to:
ref = FirebaseDatabase.getInstance().getReference().child("Products");

I dont think you are populating your list, you are sending it empty. From what I can see, you only add items to the list when you are restarting the activity. Try either populating it before sendinig the list, or changing the onRestart() for an onStart() or an onResume().

RecyclerView don't accept Constructor from Model

I can't understand why it makes problem with it. It take data from server with retrofit and it can't use that data in recyclerview. It make problem with Constructor but I can not understand why it makes problem with it. That can get data from service successfully with this Model, but problem is to put adapter and recyclierview. How can solve it?
ProductPage.java
public class ProductPage {
private int productID;
private String productName;
private String productDescription;
private List<String> productImages;
private List<ProductPrice> productPrices;
public int getProductID() {
return productID;
}
public void setProductID(int productID) {
this.productID = productID;
}
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
public String getProductDescription() {
return productDescription;
}
public void setProductDescription(String productDescription) {
this.productDescription = productDescription;
}
public List<String> getProductImages() {
return productImages;
}
public void setProductImages(List<String> productImages) {
this.productImages = productImages;
}
public List<ProductPrice> getProductPrices() {
return productPrices;
}
public void setProductPrices(List<ProductPrice> productPrices) {
this.productPrices = productPrices;
}
}
ProductDetailAdapter.java
public class ProductDetailAdapter extends RecyclerView.Adapter<ProductDetailAdapter.ViewHolder> {
private Context mContext;
int rawLayout;
private List<ProductPage> productPageList;
private int cartAmount;
public ProductDetailAdapter(Context mContext,int rawLayout, List<ProductPage> productPageList, CartListener cartListener) {
this.mContext = mContext;
this.rawLayout = rawLayout;
this.productPageList = productPageList;
this.cartListener = cartListener;
}
#NonNull
#Override
public ProductDetailAdapter.ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int i) {
View mView = LayoutInflater.from(parent.getContext()).inflate(rawLayout, parent, false);
return new ViewHolder(mView); }
#Override
public void onBindViewHolder(final ViewHolder viewHolder, final int position) {
Glide.with(mContext).load(productPageList.get(position).getProductPrices().get(position).getShopImage())
.apply(RequestOptions.placeholderOf(R.drawable.ic_glide_img).error(R.drawable.ic_glide_warning)).
into(viewHolder.imgProductDetail);
viewHolder.textProductDetailCost.setText(Double.toString(productPageList
.get(position).getProductPrices().get(position).getShopProductPrice())+" TL");
viewHolder.textProductDetailMarket.setText(productPageList.get(position).getProductPrices().get(position).getShopName());
}
#Override
public int getItemCount() {
return productPageList.size();
}
class ViewHolder extends RecyclerView.ViewHolder{
private ImageView imgProductDetail;
private TextView textProductDetailCost, textProductDetailMarket;
private Button btnProductDetail;
private CardView cardViewProductDetail;
ViewHolder(View itemView){
super(itemView);
imgProductDetail = itemView.findViewById(R.id.imageView_product_detail);
textProductDetailCost = itemView.findViewById(R.id.text_product_detail_cost);
textProductDetailMarket = itemView.findViewById(R.id.textViewProductShopName);
btnProductDetail = itemView.findViewById(R.id.buttonProductDetail);
cardViewProductDetail = itemView.findViewById(R.id.cardViewProductDetail);
}
}
public interface CartListener {
void onProductSelect(ProductPage productPage);
}
}
ProductActivity.java
public class ProductActivity extends AppCompatActivity implements ProductDetailAdapter.CartListener {
TextView textProductName, textDescription;
RecyclerView recyclerViewProduct;
protected RecyclerView.LayoutManager mLayoutManager;
String productCost, productMarket, productImage, productTitle, prdouctMarketImage;
int id;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_product);
init();
loadProductPage();
}
private void init() {
textProductName = findViewById(R.id.text_product_title);
imgProduct = findViewById(R.id.img_product);
recyclerViewProduct = findViewById(R.id.product_recycylerwiew);
textDescription = findViewById(R.id.text_product_description);
textDescription.setMovementMethod(new ScrollingMovementMethod()); // Scroll yapabilmek için açmıştım
mLayoutManager = new LinearLayoutManager(getApplicationContext());
recyclerViewProduct.setLayoutManager(mLayoutManager);
private void loadProductPage() {
ApiInterface apiInterface = ApiClient.getRetrofitInstance().create(ApiInterface.class);
Call<ProductPage> call = apiInterface.getProductPage(id);
call.enqueue(new Callback<ProductPage>() {
#Override
public void onResponse(Call<ProductPage> call, Response<ProductPage> response) {
if (response.isSuccessful()) {
ProductPage product_page_list = response.body();
textProductName.setText(product_page_list.getProductName());
textDescription.setText(product_page_list.getProductDescription());
Glide.with(getApplicationContext()).load(product_page_list.getProductImages())
.apply(RequestOptions.placeholderOf(R.drawable.ic_glide_img).error(R.drawable.ic_glide_warning)).
into(imgProduct);
ProductDetailAdapter myAdapter = new ProductDetailAdapter(getApplicationContext(),R.layout.product_detail_item_view,product_page_list,ProductActivity.this);
recyclerViewProduct.setAdapter(myAdapter);
}
else
ApiErrorUtils.parseError(response);
}
#Override
public void onFailure(Call<ProductPage> call, Throwable t) {
Log.d("response","apiError");
}
});
}
#Override
public void onProductSelect(ProductPage productPage) {
}

You are just passing ProductPage object to adapter.
ProductPage product_page_list = response.body();
but your adapter required
List<ProductPage> productPageList
So you need to add product object to product list like this
ProductPage productPage = response.body();
List<ProductPage> productList=new ArrayList<>();
productList.add(productPage);

ProductPage product_page_list = response.body();
product_page_list is not List<ProductPage>()
in your adapter need List<ProductPage> productPageList

recyclerview empty on very first launch of app

i have this issue that i am trying to solve without success. i created an pp that shows a recyclerview on main activity. But when the app is launched for the very first time the recyclerview is empty though i am fetching data from firestore, but when i go another activity and come back it get loaded. i am using AsyncTask here is my code
public class FragmentHome extends Fragment {
private List<ProductPost> product_list;
private RecyclerAdapter productRecyclerAdapter;
FirebaseFirestore firebaseFirestore;
RecyclerView product_list_view;
public FragmentHome() {
// Required empty public constructor
}
public View onCreateView(#NonNull LayoutInflater inflater, ViewGroup
container,
Bundle savedInstanceState) {
//initialize AsynTask class
LoadMyData loadMyData = new LoadMyData(getContext());
loadMyData.execute();
View view = inflater.inflate(R.layout.fragment_fragment_home,
container, false);
//product list for adapters
product_list = new ArrayList<>();
product_list_view = view.findViewById(R.id.recycler1);
productRecyclerAdapter = new RecyclerAdapter(getActivity(), product_list);
product_list_view.setLayoutManager(new
LinearLayoutManager(getActivity(), LinearLayoutManager.HORIZONTAL, false));
product_list_view.setAdapter(productRecyclerAdapter);
}
public class LoadMyData extends AsyncTask<String, String, String>{
private Context context;
private ProgressDialog progressDialog;
public LoadMyData(Context context){
this.context = context;
}
#Override
protected String doInBackground(String... strings) {
//Retrieve politics books for recycler1
Query secondQuery = firebaseFirestore.collection("All_Books")
.whereEqualTo("category", "politics")
.orderBy("time", Query.Direction.DESCENDING);
secondQuery.addSnapshotListener(new EventListener<QuerySnapshot>() {
#Override
public void onEvent(#Nullable QuerySnapshot queryDocumentSnapshots, #Nullable FirebaseFirestoreException e) {
if (e != null) {
return;
}
if(queryDocumentSnapshots != null && !queryDocumentSnapshots.isEmpty()){
for (DocumentChange doc : queryDocumentSnapshots.getDocumentChanges()) {
if (doc.getType() == DocumentChange.Type.ADDED) {
String productID = doc.getDocument().getId();
ProductPost productPost = doc.getDocument().toObject(ProductPost.class).withId(productID);
product_list.add(productPost);
productRecyclerAdapter.notifyDataSetChanged();
}
}
}//else statement here...
}
});
return null;
}
#Override
protected void onPostExecute(String s) {
progressDialog.dismiss();
product_list_view.setAdapter(productRecyclerAdapter);
super.onPostExecute(s);
}
#Override
protected void onPreExecute() {
progressDialog = new ProgressDialog(context);
progressDialog.setTitle("Loading data...");
progressDialog.show();
super.onPreExecute();
}
}
}
//getter and setter class
package com.example.ibrahimsahko.yateerenlite;
import java.util.Date;
public class ProductPost extends ProductID{
private String Name, book_price, book_title, image, category;
private Date time;
private String qty;
public ProductPost(){
}
public ProductPost(String name, String book_price, String book_title, String image, Date time, String category, String qty) {
this.Name = name;
this.book_price = book_price;
this.book_title = book_title;
this.image = image;
this.time = time;
this.category = category;
this.qty = qty;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public String getBook_price() {
return book_price;
}
public void setBook_price(String book_price) {
this.book_price = book_price;
}
public String getBook_title() {
return book_title;
}
public void setBook_title(String book_title) {
this.book_title = book_title;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public Date getTime() {
return time;
}
public void setTime(Date time) {
this.time = time;
}
public String getQty() {
return qty;
}
public void setQty(String qty) {
this.qty = qty;
}
}
I will be gratefull if anyone can help me find whats wrong with m code here

You can be in post you are passing the adapter again when you already have it on the onCreateView
#Override
protected void onPostExecute(String s) {
progressDialog.dismiss();
//product_list_view.setAdapter(productRecyclerAdapter);
super.onPostExecute(s);
}

Unable to display all the images (image urls - arraylist) from adapter_Firebase

This is my adapter class , where taking setters and getters from Blog.class and calling adapter class from main activity like below!! Code for calling adapter class from main activity
mdatabaseReference =
FirebaseDatabase.getInstance().getReference().child("Blog");
userdatabaseReference=
FirebaseDatabase.getInstance().getReference().child("Users");
likesdatabaseReference= FirebaseDatabase.getInstance().getReference().child("Likes");
mDBRefSetup = FirebaseDatabase.getInstance().getReference().child("Users");
mquery = mdatabaseReference.orderByChild("time");
mdatabaseReference.keepSynced(true);
userdatabaseReference.keepSynced(true);
firebaseAuth.addAuthStateListener(authStateListener);
mProgressbar.setMessage("Fetching .....");
mProgressbar.show();
mProgressbar.dismiss();
list = new ArrayList<>();
adapter = new MyCustomAdapter(this,list,firebaseAuth,mdatabaseReference,likesdatabaseReference);
recyclerView = (RecyclerView) findViewById(R.id.blog_list);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(adapter);
mchildEventListener = new ChildEventListener() {
#Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
mProgressbar.dismiss();
String j = dataSnapshot.getKey();
Log.v("GETKEYZZZ", j);
Blog friendlyMessage = dataSnapshot.getValue(Blog.class);
friendlyMessage.setPostkey(j);
list.add(friendlyMessage);
adapter.notifyDataSetChanged();
}
public void onChildChanged(DataSnapshot dataSnapshot, String s) {}
public void onChildRemoved(DataSnapshot dataSnapshot){}
public void onChildMoved(DataSnapshot dataSnapshot, String s) {}
public void onCancelled(DatabaseError databaseError) {}
};
mquery.addChildEventListener(mchildEventListener);
This is my Adapter class, displaying username,time,description and images using image urls arryalist but its showing one image.
public class MyCustomAdapter extends RecyclerView.Adapter {
Context context;
ArrayList<Blog> list;
List <String> imageUrls;
LayoutInflater inflator;
int lastPosition = 1;
boolean mprogressLike = true,mprogressview = true;
DatabaseReference likeDatabaseReference;
FirebaseAuth firebaseAuth;
DatabaseReference blogDatabaseReference;
public MyCustomAdapter(Context context, ArrayList<Blog> list,FirebaseAuth firebaseAuth,DatabaseReference blogDatabaseReference, DatabaseReference likeDatabaseReference) {
this.context=context;
this.list=list;
inflator=LayoutInflater.from(context);
this.likeDatabaseReference=likeDatabaseReference;
this.firebaseAuth=firebaseAuth;
this.blogDatabaseReference=blogDatabaseReference;
}
#Override
public myviewholder onCreateViewHolder(ViewGroup parent, int position) {
View v=inflator.inflate(R.layout.posts,parent,false);
myviewholder holder=new myviewholder(v);
return holder;
}
#Override
public void onBindViewHolder(final myviewholder holder, int position) {
final Blog p=list.get(position);
holder.title.setText(p.getTitle());
holder.username.setText(p.getUsername());
holder.viewno.setText(p.getTimestamp());
for(Blog model : list) {
imageUrls = new ArrayList<>();;
imageUrls.addAll(model.getUrl());
Log.v("IMURLSSS", String.valueOf(imageUrls));
}
for(int i=0; i<imageUrls.size(); i++)
{
Picasso.with(context).load(imageUrls.get(i)).into(holder.imageview);
Log.v("IMGGPOS", imageUrls.get(i));
}
Picasso.with(context).load(p.getImage()).into(holder.userdp);
final String post_key = p.getUid().toString();
Log.v("POST", post_key);
final String current_user= firebaseAuth.getCurrentUser().getUid();
Log.v("CURRENT", current_user);
if(post_key.equals(current_user)){
holder.over.setVisibility(View.VISIBLE);
}else{
holder.over.setVisibility(View.INVISIBLE);
}
#Override
public int getItemCount() {
return list.size();
}
public class myviewholder extends RecyclerView.ViewHolder
{
TextView title,desc,username,likeno,viewno;
ImageView imageview,userdp, over, comments, likes;
ImageButton likebtn,viewbtn;
public myviewholder(View itemView)
{
super(itemView);
title = (TextView) itemView.findViewById(R.id.blog_desc);
username = (TextView) itemView.findViewById(R.id.blog_user_name);
viewno = (TextView) itemView.findViewById(R.id.blog_date);
likeno = (TextView) itemView.findViewById(R.id.blog_like_count);
userdp = (ImageView) itemView.findViewById(R.id.blog_user_image);
imageview = (ImageView) itemView.findViewById(R.id.blog_image);
comments = (ImageView) itemView.findViewById(R.id.blog_comment_icon);
}
popup.show();
}
}
public void filterList(ArrayList<Blog> newList)
{
list=newList;
notifyDataSetChanged();
}
}
finally this is my blog.class:
public class Blog {
String title;
String description;
ArrayList<String> url;
String uid;
int time;
String username;
String image;
String postkey;
String timestamp;
int views;
public int getViews()
{
return views;
}
public void setViews(int views)
{
this.views = views;
}
public String getTimestamp()
{
return timestamp;
}
public void setTimestamp(String timestamp)
{
this.timestamp = timestamp;
}
public int getTime()
{
return time;
}
public void setTime(int time)
{
this.time = time;
}
public String getTitle()
{
return title;
}
public String getUid()
{
return uid;
}
public String getPostkey()
{
return postkey;
}
public void setPostkey(String postkey)
{
this.postkey = postkey;
}
public String getImage()
{
return image;
}
public void setImage(String image)
{
this.image = image;
}
public void setUid(String uid)
{
this.uid = uid;
}
public String getUsername()
{
return username;
}
public void setUsername(String username)
{
this.username = username;
}
public void setTitle(String title)
{
this.title = title;
}
public String getDescription()
{
return description;
}
public void setDescription(String description)
{
this.description = description;
}
public ArrayList<String> getUrl()
{
return url;
}
public void setUrl(ArrayList<String> url)
{
this.url = url;
}
}

I hope this will work for you.
Use below code.
Picasso.with(context).load(list.get(position).getUrl()).into(holder.imageview);
Log.e("IMGGPOS", list.get(i).getUrl());
Insted of this
for(Blog model : list) {
imageUrls = new ArrayList<>();;
imageUrls.addAll(model.getUrl());
Log.v("IMURLSSS", String.valueOf(imageUrls));
}
for(int i=0; i<imageUrls.size(); i++)
{
Picasso.with(context).load(imageUrls.get(i)).into(holder.imageview);
Log.v("IMGGPOS", imageUrls.get(i));
}