I am trying to retrieve data from another firebase project, but the data is not displaying in the recylerview. I am not getting any errors but just a blank cardview. Can someone help me solve this issue that I am having. My code is below.
// This my code
public class ExampleFragment extends Fragment {
LinearLayout linearLayoutWithoutItems,linearLayoutNoConnection;
View rootView;
private RecyclerView recyclerView;
private Adapter1 aAdapter;
ImageButton menu_click;
ImageView imageView;
//Variables
NavigationView navigationView;
Toolbar toolbar;
Menu menu;
LinearLayout linearLayout;
TextView textView;
BottomNavigationView bottomNavigationView;
private DatabaseReference databaseReference;
private ArrayList<Model_Information> myUploads;
FirebaseStorage firebaseStorage;
StorageReference storageReference;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView =inflater.inflate(R.layout.fragment_example, container, false);
init();
return rootView;
}
public void init()
{
recyclerView = rootView.findViewById(R.id.WithItems_recyclerview);
linearLayoutWithoutItems = rootView.findViewById(R.id.WithoutItems);
linearLayoutNoConnection = rootView.findViewById(R.id.no_connection);
RecyclerView.LayoutManager layoutManager = new GridLayoutManager(getContext(),1);
recyclerView.setLayoutManager(layoutManager);
myUploads = new ArrayList<Model_Information>();
aAdapter = new Adapter1(getContext(), myUploads);
recyclerView.setAdapter(aAdapter);
aAdapter.notifyDataSetChanged();
databaseReference = FirebaseDatabase.getInstance("https://liou-43081.firebaseio.com").getReference().child("Post");
if (InternetConnection.checkConnection(getContext())) {
databaseReference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
if(dataSnapshot.exists()){
//progressBar.setVisibility(View.GONE);
for (DataSnapshot postsnapshot : dataSnapshot.getChildren()) {
Model_Information upload=postsnapshot.getValue(Model_Information.class);
//myUploads.clear();
myUploads.add(upload);
aAdapter = new Adapter1(getContext(), myUploads);
recyclerView.setAdapter(aAdapter);
aAdapter.notifyDataSetChanged();
recyclerView.invalidate();
}
linearLayoutWithoutItems.setVisibility(View.GONE);
recyclerView.setVisibility(View.VISIBLE);
aAdapter.notifyDataSetChanged();
}else{
linearLayoutWithoutItems.setVisibility(View.VISIBLE);
recyclerView.setVisibility(View.GONE);
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
Toast.makeText(getContext(), databaseError.getMessage(), Toast.LENGTH_LONG).show();
}
});
} else {
linearLayoutNoConnection.setVisibility(View.VISIBLE);
linearLayoutWithoutItems.setVisibility(View.GONE);
recyclerView.setVisibility(View.GONE);
}
//Adapter1.class
public class Adapter1 extends RecyclerView.Adapter<Adapter1.ImageViewHolder>{
private Context mContext;
private ArrayList<Model_Information> users;
DatabaseReference databaseReference;
public Adapter1(Context context, ArrayList<Model_Information> uploads){
mContext = context;
users = uploads;
}
#NonNull
#Override
public ImageViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View V = LayoutInflater.from(mContext).inflate(R.layout.cardview1, parent, false);
return new ImageViewHolder(V);
}
#Override
public void onBindViewHolder(#NonNull final ImageViewHolder holder, final int position) {
//String uploadCurrent=users.get(position).getmImageUrl();
Glide.with(mContext).load(users.get(position).getmImageUrl()).thumbnail(0.05f).transition(DrawableTransitionOptions.withCrossFade()).fitCenter().centerInside().into(holder.imageView);
holder.imageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//Toast.makeText(mContext,users.get(position).getCategory(), Toast.LENGTH_LONG).show();
Long l= Long.valueOf(1);
databaseReference = FirebaseDatabase.getInstance("https://louie-43081.firebaseio.com").getReference("Clicks_and_Views").child(users.get(position).id);
databaseReference.child("views").setValue(ServerValue.increment(l));
/*
Intent intent=new Intent(mContext,ViewActivity.class);
intent.putExtra("website",users.get(position).getWebsiteurl());
intent.putExtra("action",users.get(position).getAction());
intent.putExtra("image",users.get(position).getmImageUrl());
intent.putExtra("id",users.get(position).id);
mContext.startActivity(intent);
*/
}
});
}
#Override
public int getItemCount() {
return users.size();
}
public class ImageViewHolder extends RecyclerView.ViewHolder{
public ImageView imageView;
public ImageViewHolder(#NonNull View itemView) {
super(itemView);
imageView=itemView.findViewById(R.id.image);
}
}
You should not initialize adapter twice.
Your code block should look like this,
for (DataSnapshot postsnapshot : dataSnapshot.getChildren()) {
Model_Information upload=postsnapshot.getValue(Model_Information.class);
myUploads.add(upload);
aAdapter.notifyDataSetChanged();
recyclerView.invalidate();
}
Related
I'm loading some data into a RecyclerView from Firebase Realtime Database. This RecyclerView is in a fragment and I want to open a new activity when an item is clicked. But when i add the onClickListener to an item from the adapter, my click doesn't even recognized by the app. I'm not sure what I'm doing wrong here because this method worked fine for a RecyclerView when it is inside of a normal activity.
This is a project for my university and I should submit it tomorrow. So I can really use some help.
This is the my data Adapter class,
public class Adapter_NoLimit extends RecyclerView.Adapter<Adapter_NoLimit.LViewHolder> {
Context context;
ArrayList<Helper> list_nl;
public Adapter_NoLimit(Context context, ArrayList<Helper> list_nl) {
this.context = context;
this.list_nl = list_nl;
}
#NonNull
#Override
public Adapter_NoLimit.LViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(context).inflate(R.layout.itemlist, parent, false);
return new LViewHolder(v);
}
#Override
public void onBindViewHolder(#NonNull Adapter_NoLimit.LViewHolder holder, int position) {
//final Helper temp = list_nl.get(position);
String fname_txt = list_nl.get(position).getFname();
String catg_txt = list_nl.get(position).getSpin();
String prof_img = list_nl.get(position).getProfile_url();
holder.setUsers(fname_txt, catg_txt, prof_img);
holder.f_name.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
AppCompatActivity activity = (AppCompatActivity) v.getContext();
Intent i = new Intent(activity, UserProfile_VV.class);
i.putExtra("full name", fname_txt);
activity.startActivity(i);
}
});
}
#Override
public int getItemCount() {
return list_nl.size();
}
public class LViewHolder extends RecyclerView.ViewHolder{
private TextView f_name, catG;
private ImageView profile_pic;
public LViewHolder(#NonNull View itemView) {
super(itemView);
f_name = itemView.findViewById(R.id.username_view);
catG = itemView.findViewById(R.id.category_view);
profile_pic = itemView.findViewById(R.id.userimage);
}
public void setUsers(String fname_txt, String catg_txt, String prof_img) {
f_name.setText(fname_txt);
catG.setText(catg_txt);
Picasso.get().load(prof_img).fit().into(profile_pic);
}
}
}
This is one of fragments,
public class Beauty_Frag extends Fragment {
RecyclerView recyclerView;
DatabaseReference reference, user_ref;
ArrayList<Helper> list;
Adapter adapter;
FirebaseAuth auth;
String uid;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_beauty, container, false);
recyclerView = v.findViewById(R.id.beauty_recycler_frag);
reference = FirebaseDatabase.getInstance().getReference();
user_ref = reference.child("users");
auth = FirebaseAuth.getInstance();
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
//searchField = findViewById(R.id.search_field);
list = new ArrayList<>();
adapter = new Adapter(getContext(), list);
recyclerView.setAdapter(adapter);
user_ref.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull /*#org.jetbrains.annotations.NotNull*/ DataSnapshot snapshot) {
for (DataSnapshot key : snapshot.getChildren()) {
if( key.child("spin").getValue().toString().equals("Beauty")) {
Helper helper = key.getValue(Helper.class);
list.add(helper);
adapter.notifyDataSetChanged();
}
}
}
#Override
public void onCancelled(#NonNull /*#org.jetbrains.annotations.NotNull*/ DatabaseError error) {
}
});
return v;
}
}
You are very welcome if you have any solution.
Use below code for onClicklistner:
holder.f_name.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(context, UserProfile_VV.class);
i.putExtra("full name", fname_txt);
context.startActivity(i);
}
});
I am new in android development. I am trying to create list of firebase data. so i have created a recyclerview and represent the data in recyclerview.
I have featched data from firebase and assign to adapter class. but data is not showing in recyclerview.
Fragment Class
public class HomeFragment extends Fragment {
DatabaseReference reference;
RecyclerView recyclerView;
ArrayList<Carmodel> list = new ArrayList<>();;
CarAdapter adapter;
public View onCreateView(#NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.recyclerview, container, false);
recyclerView = (RecyclerView) root.findViewById(R.id.recycler);
recyclerView.setLayoutManager( new LinearLayoutManager(getContext()));
reference = FirebaseDatabase.getInstance().getReference().child("AddCar");
reference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
for (DataSnapshot dataSnapshot1 : dataSnapshot.getChildren()) {
Carmodel p = dataSnapshot1.getValue(Carmodel.class);
Log.e("Get Data", p.getCarName());
list.add(p);
}
}
#Override
public void onCancelled(#NonNull DatabaseError error) {
Toast.makeText(getActivity(), "Opsss.... Something is wrong", Toast.LENGTH_SHORT).show();
}
});
adapter = new CarAdapter(getContext(), list);
recyclerView.setAdapter(adapter);
adapter.notifyDataSetChanged();
return root;
}
}
Adapert Class
public class CarAdapter extends RecyclerView.Adapter<CarAdapter.MyViewHolder> {
Context context;
ArrayList<Carmodel> profiles;
public CarAdapter(Context c , ArrayList<Carmodel> p)
{
context = c;
profiles = p;
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
return new MyViewHolder(LayoutInflater.from(context).inflate(R.layout.fragment_admin_home, parent, false));
}
#Override
public void onBindViewHolder(#NonNull MyViewHolder holder, int position) {
holder.name.setText(profiles.get(position).getCarName());
holder.seater.setText(profiles.get(position).getSeater());
holder.price.setText(profiles.get(position).getPrice());
holder.status.setText(profiles.get(position).getAvailable());
Picasso.get().load(profiles.get(position).getImageURL()).into(holder.car_image);
}
#Override
public int getItemCount() {
return profiles.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder
{
TextView name,seater,price, status;
ImageView car_image;
#SuppressLint("CutPasteId")
public MyViewHolder(View itemView) {
super(itemView);
name = (TextView) itemView.findViewById(R.id.CarName);
seater = (TextView) itemView.findViewById(R.id.Seater);
price = (TextView) itemView.findViewById(R.id.Seater);
car_image = (ImageView) itemView.findViewById(R.id.imageView);
status = (TextView) itemView.findViewById(R.id.Status);
}
}
Carmodel p = dataSnapshot1.getValue(Carmodel.class);
make you sure it is (p) not empty
You are notifying your adapter in wrong time for data change
adapter = new CarAdapter(getContext(), list);
recyclerView.setAdapter(adapter);
reference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
for (DataSnapshot dataSnapshot1 : dataSnapshot.getChildren()) {
Carmodel p = dataSnapshot1.getValue(Carmodel.class);
Log.e("Get Data", p.getCarName());
list.add(p);
}
adapter.notifyDataSetChanged();
}
#Override
public void onCancelled(#NonNull DatabaseError error) {
Toast.makeText(getActivity(), "Opsss.... Something is wrong", Toast.LENGTH_SHORT).show();
}
});
Please modify your method like this
I am currently trying to create a messaging app.The users who have registered on to my app are showed in users tab but along with those users the user who is currently logged into my app also sees himself in users tab .I don't want user to see himself in users tab.
My code
UserAdapter.java
public class UserAdapter extends RecyclerView.Adapter<UserAdapter.ViewHolder> {
private Context mContext;
private List<User> mUsers;
private boolean ischat;
public UserAdapter(Context mContext, List<User> mUsers,boolean ischat) {
this.mContext = mContext;
this.mUsers = mUsers;
this.ischat=ischat;
}
#NonNull
#Override
public UserAdapter.ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view= LayoutInflater.from(mContext).inflate(R.layout.user_item,parent,false);
return new UserAdapter.ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull UserAdapter.ViewHolder holder, int position) {
final User user=mUsers.get(position);
holder.username.setText(user.getFirst());
if (user.getImageURL().equals("default")){
holder.profile_image.setImageResource(R.mipmap.ic_launcher);
} else {
Glide.with(mContext).load(user.getImageURL()).into(holder.profile_image);
}
if (ischat){
if (user.getStatus().equals("online")){
holder.img_on.setVisibility(View.VISIBLE);
holder.img_off.setVisibility(View.GONE);
} else {
holder.img_on.setVisibility(View.GONE);
holder.img_off.setVisibility(View.VISIBLE);
}
} else {
holder.img_on.setVisibility(View.GONE);
holder.img_off.setVisibility(View.GONE);
}
holder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent=new Intent(mContext, MessageActivity.class);
intent.putExtra("UserName",user.getFirst());
intent.putExtra("userid", user.getId());
mContext.startActivity(intent);
}
});
}
#Override
public int getItemCount() {
return mUsers.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
public TextView username;
public ImageView profile_image;
private ImageView img_on;
private ImageView img_off;
public ViewHolder(#NonNull View itemView) {
super(itemView);
username=itemView.findViewById(R.id.username);
profile_image=itemView.findViewById(R.id.profile_image);
img_on = itemView.findViewById(R.id.img_on);
img_off = itemView.findViewById(R.id.img_off);
}
}
}
UsersFragment.java
public class UsersFragment extends Fragment {
private RecyclerView recyclerView;
private UserAdapter mUserAdapter;
private List<User> mUsers;
String TAG = "MyTag";
public UsersFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_users, container, false);
recyclerView = view.findViewById(R.id.recycler_view);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
mUsers = new ArrayList<>();
readUser();
return view;
}
private void readUser() {
final FirebaseUser firebaseUser=FirebaseAuth.getInstance().getCurrentUser();
DatabaseReference reference= FirebaseDatabase.getInstance().getReference("Users");
reference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
mUsers.clear();
for (DataSnapshot snapshot: dataSnapshot.getChildren()) {
User user=snapshot.getValue(User.class);
mUsers.add(user);
}
mUserAdapter=new UserAdapter(getContext(),mUsers,false);
recyclerView.setAdapter(mUserAdapter);
mUserAdapter.notifyDataSetChanged();
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
});
}
}
Make condition to check if whether current login user is not not equals to the key node then it will add users in array
reference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
mUsers.clear();
for (DataSnapshot snapshot: dataSnapshot.getChildren()) {
if(!FirebaseAuth.getInstance().getCurrentUser().getUid().equals(snapshot.getId())){
User user=snapshot.getValue(User.class);
mUsers.add(user);
}
}
mUserAdapter=new UserAdapter(getContext(),mUsers,false);
recyclerView.setAdapter(mUserAdapter);
mUserAdapter.notifyDataSetChanged();
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
});
I have "E/RecyclerView: No adapter attached; skipping layout" error message.
I have recycleView inside fragment so I must have done something wrong on fragment1.java.
here is the code. I set adapter on the code as you can see, but I am getting this error. Any help would be appreciated. Thank you.
public class Fragment1 extends Fragment {
private RecyclerView recyclerView;
private RecyclerView.Adapter adapter;
private RecyclerView.LayoutManager layoutManager;
private ArrayList<Bible> arrayList;
private FirebaseDatabase database;
private DatabaseReference databaseReference;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment1, container, false);
recyclerView = rootView.findViewById(R.id.recyclerView);
recyclerView.setHasFixedSize(true);
//GridLayoutManager layoutManager = new GridLayoutManager(getContext(), 2);
layoutManager = new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false);
recyclerView.setLayoutManager(layoutManager);
arrayList = new ArrayList<>();
database = FirebaseDatabase.getInstance();
databaseReference = database.getReference("Bible");
databaseReference.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
arrayList.clear();
for(DataSnapshot snapshot: dataSnapshot.getChildren()){
Bible bible = snapshot.getValue(Bible.class);
arrayList.add(bible);
}
adapter.notifyDataSetChanged();
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
Log.e("fragment1", String.valueOf(databaseError.toException()));//에러문 출력
}
});
adapter = new BibleAdapter(arrayList, getContext());
recyclerView.setAdapter(adapter);
return rootView;
}
}
public class BibleAdapter extends RecyclerView.Adapter {
private ArrayList<Bible> arrayList;
private Context context;
private OnVerseItemClickListener listener;
public BibleAdapter(ArrayList<Bible> arrayList, Context context) {
this.arrayList = arrayList;
this.context = context;
}
public void setOnItemClickListener(OnVerseItemClickListener listener){
this.listener = listener;
}
#NonNull
#Override
public BibleAdapter.BibleViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.verse_item, parent, false);
BibleViewHolder holder = new BibleViewHolder(view, listener);
return holder;
}
#Override
public void onBindViewHolder(#NonNull BibleAdapter.BibleViewHolder holder, int position) {
Glide.with(holder.imageView)
.load(arrayList.get(position).getImage())
.into(holder.imageView);
holder.bibleType.setText(arrayList.get(position).getBibleType());
holder.keysentance.setText(arrayList.get(position).getKeysentance());
holder.verse.setText(arrayList.get(position).getVerse());
}
#Override
public int getItemCount() {
return (arrayList!=null? arrayList.size():0);
}
public class BibleViewHolder extends RecyclerView.ViewHolder{
ImageView imageView;
TextView bibleType;
TextView verse;
TextView keysentance;
public BibleViewHolder(#NonNull View itemView, final OnVerseItemClickListener listener) {
super(itemView);
this.imageView = itemView.findViewById(R.id.imageView);
this.bibleType = itemView.findViewById(R.id.bibleType);
this.keysentance = itemView.findViewById(R.id.keysentance);
this.verse = itemView.findViewById(R.id.verse);
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int position = getAdapterPosition();
if(listener != null){
listener.onItemClick(BibleViewHolder.this, v, position);
}
}
});
}
}
}
in your code you have create adapter with empty arrayList, but never after that you update the list.
in adapter create swapData() method and call it when you have to refresh data or have refreshed data, in your case you will get it in onDataChange().
And also define adapter before adding listener:
adapter = new BibleAdapter(arrayList, getContext());
recyclerView.setAdapter(adapter);
databaseReference.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
arrayList.clear();
for(DataSnapshot snapshot: dataSnapshot.getChildren()){
Bible bible = snapshot.getValue(Bible.class);
arrayList.add(bible);
}
adapter.swapData(arrayList);
//adapter.notifyDataSetChanged();
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
Log.e("fragment1", String.valueOf(databaseError.toException()));//에러문 출력
}
});
in adapter class create method as:
public void swapData(ArrayList<Bible> filtersList) {
if (filtersList != null) {
this.arrayList.clear();
this.arrayList.addAll(filtersList);
notifyDataSetChanged();
}
}
Here is my fragment
public class TransactionsFragment extends Fragment {
private FirebaseAuth mAuth;
private DatabaseReference mDBref;
FirebaseUser Fuser;
private String UID;
private RecyclerView recyclerView;
private RecyclerView.Adapter trpAdapter;
private List<TransGetterSetter> DataList;
String trans_id;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_transactions, container, false);
DataList = new ArrayList<>();
recyclerView = (RecyclerView) v.findViewById(R.id.RVList);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
TransactionRVAdapter trvAdapter = new TransactionRVAdapter(DataList, getContext());
recyclerView.setAdapter(trvAdapter);
mAuth = FirebaseAuth.getInstance();
mDBref = FirebaseDatabase.getInstance().getReference();
Fuser = mAuth.getInstance().getCurrentUser();
UID = Fuser.getUid();
mDBref.child("transactions").child(UID).addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
for (DataSnapshot chidSnap : dataSnapshot.getChildren()) {
trans_id = chidSnap.getKey();
DataList.add(new TransGetterSetter("" + trans_id));
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
});
trvAdapter.notifyDataSetChanged();
return v;
}
}
If i toast "trans_id" string im getting expected result.
Here is My Adapter class
public class TransactionRVAdapter extends RecyclerView.Adapter<TransactionRVAdapter.rvViewHolder> {
Context mContext;
List<TransGetterSetter> DataList = new ArrayList<>();
public class rvViewHolder extends RecyclerView.ViewHolder{
private TextView TransId;
public rvViewHolder(#NonNull View itemView) {
super(itemView);
TransId = (TextView) itemView.findViewById(R.id.TransIdTxt);
}
}
public TransactionRVAdapter( List<TransGetterSetter> DataList,Context mContext){
this.DataList = DataList;
this.mContext = mContext;
}
#NonNull
#Override
public rvViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
LayoutInflater inflater = LayoutInflater.from(mContext);
View view = inflater.inflate(R.layout.fragment_transactions_item, viewGroup, false);
return new rvViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull rvViewHolder rvViewHolder, int i) {
rvViewHolder.TransId.setText(DataList.get(i).getTrans_id());
}
#Override
public int getItemCount() {
return DataList.size();
}
}
Here is my GetterSetter class
public class TransGetterSetter {
private String trans_id;
public TransGetterSetter() {
}
public TransGetterSetter(String trans_id) {
this.trans_id = trans_id;
}
public String getTrans_id() {
return trans_id;
}
public void setTrans_id(String trans_id) {
this.trans_id = trans_id;
}
}
Im able to get Data from firebase, but when i try to add it to recycler view it dosen't show any data. Recycler view is showing empty. I checked my code many time but haven't found solution.
You should call :
trvAdapter.notifyDataSetChanged();
After the for loop inside the (onDataChange) event listener.
Try to called ..
DataList.add(new TransGetterSetter("" + trans_id));
after this line called ..
trvAdapter.notifyDataSetChanged();