I want to read the value of a child(name) from Client's nodes when I use a firebase recycler adapter from Request's nodes which have childs with the value of Client's keys
I tried this, but I only received the link
adapter=new FirebaseRecyclerAdapter<Request, OrderViewHolder>(optionsReq) {
#Override
protected void onBindViewHolder(#NonNull OrderViewHolder holder, final int position, #NonNull final Request model) {
holder.txtOrderId.setText(adapter.getRef(position).getKey());
holder.txtOrderStatus.setText(Common.convertCodeToStatus(model.getStatus()));
holder.txtOrderAddress.setText(model.getAddress());
holder.txtOrderDate.setText(Common.getDate(Long.parseLong(model.getDate())));
holder.txtOrderClient.setText(client.child(model.getDniclient()).child("name").toString());
#NonNull
#Override
public OrderViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.order_layout, parent,false);
return new OrderViewHolder(view);
}
};
recyclerView.setAdapter(adapter);
}
DatabaseReference databaseReference;
String name;
adapter=new FirebaseRecyclerAdapter<Request, OrderViewHolder>(optionsReq) {
#Override
protected void onBindViewHolder(#NonNull OrderViewHolder holder, final int position, #NonNull final Request model) {
holder.txtOrderId.setText(adapter.getRef(position).getKey());
holder.txtOrderStatus.setText(Common.convertCodeToStatus(model.getStatus()));
holder.txtOrderAddress.setText(model.getAddress());
holder.txtOrderDate.setText(Common.getDate(Long.parseLong(model.getDate())));
holder.txtOrderClient.setText(client.child(model.getDniclient()).child("name").toString());
databaseReference = FirebaseDatabase.getInstance().getReference().child("Client").child(model.getDniclient());
databaseReference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
name = dataSnapshot.child("name").getValue().toString();
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
#NonNull
#Override
public OrderViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.order_layout, parent,false);
return new OrderViewHolder(view);
}
};
recyclerView.setAdapter(adapter);
}
Related
#Override
public void onStart() {
super.onStart();
FirebaseRecyclerAdapter<Data,MyViewHolder>adapter=new FirebaseRecyclerAdapter<Data, MyViewHolder> ("what to put here?") {
#Override
protected void onBindViewHolder(#NonNull MyViewHolder holder, int position, #NonNull Data model) {
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
return null;
}
};
}
I was trying to do a recycler view where in I can put the FirebaseRealtimeDatabase
You will need a FirebaseRecyclerOptions:
FirebaseRecyclerOptions <Data> options = new FirebaseRecyclerOptions.Builder <Data>().setQuery(query, Data.class).build();
Data : Is your class.
query : Is your DatabaseReference that reference, your data node that you want to populate in the recycler view.
And pass this options to the place that you are referring to:
//here
.... = new FirebaseRecyclerAdapter<Data, MyViewHolder> (options) {
The method searchForFriends retrieves users stored in firebase database based on their
usernames. However a logged in user can search for himself too.
I tried couple solutions but none worked.
I tried to get the currentuserid and transform it to string variable even though
the issue continued.
searchIcon.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view)
{
String searchTextInput = searchText.getText().toString();
searchForFriends(searchTextInput);
}
});
private void searchForFriends(String searchTextInput)
{
Toast.makeText(FindFriendsActivity.this, "Searching...", Toast.LENGTH_SHORT).show();
Query searchForPeople = usersRef.orderByChild("username")
.startAt(searchTextInput).endAt(searchTextInput+"\uf8ff");
FirebaseRecyclerOptions<FindFriends> options
= new FirebaseRecyclerOptions.Builder<FindFriends>()
.setQuery(searchForPeople,FindFriends.class).build();
FirebaseRecyclerAdapter<FindFriends,FindFriendsViewHolder> adapter
= new FirebaseRecyclerAdapter<FindFriends, FindFriendsViewHolder>(options) {
#Override
protected void onBindViewHolder(#NonNull FindFriendsViewHolder holder, int position, #NonNull FindFriends model)
{
holder.userFullName.setText(model.getFullname());
holder.userStatus.setText(model.getStatus());
Picasso.get().load(model.getProfileimage()).into(holder.userProfileImage);
}
#NonNull
#Override
public FindFriendsViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType)
{
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.show_searched_users,parent,false);
FindFriendsViewHolder viewHolder = new FindFriendsViewHolder(view);
return viewHolder;
}
};
searchResults.setAdapter(adapter);
adapter.startListening();
}
public static class FindFriendsViewHolder extends RecyclerView.ViewHolder
{
TextView userFullName, userStatus;
CircleImageView userProfileImage;
public FindFriendsViewHolder(#NonNull View itemView)
{
super(itemView);
userFullName = itemView.findViewById(R.id.show_searched_users_full_name);
userStatus = itemView.findViewById(R.id.show_searched_users_status);
userProfileImage = itemView.findViewById(R.id.searched_user_profile_image);
}
}
Im attempting a FireBase Horizontal RecyclerView (like an Netflix clone).
I have looked at Git and Android Arsenal to find programing similar, but had been unsuccessful finding anything with a firebase backend. I had played with the adapter and the database. I have work on this for a couple days without finding a solution.
public class RestaurantList extends AppCompatActivity {
RecyclerView recyclerView1;
RecyclerView recyclerView2;
FirebaseRecyclerOptions<Restaurant> options = new FirebaseRecyclerOptions.Builder<Restaurant>()
.setQuery(FirebaseDatabase.getInstance()
.getReference()
.child("Restaurants1")
,Restaurant.class)
.build();
FirebaseRecyclerAdapter<Restaurant, RestaurantViewHolder> adapter = new FirebaseRecyclerAdapter<Restaurant, RestaurantViewHolder>(options) {
#NonNull
#Override
public RestaurantViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.restaurant_item, parent, false);
return new RestaurantViewHolder(itemView);
}
#Override
protected void onBindViewHolder(#NonNull RestaurantViewHolder viewHolder, int position, #NonNull Restaurant model) {
viewHolder.txt_restaurant_name.setText(model.getName());
Picasso.get().load(model.getImage())
.into(viewHolder.img_restaurant);
final Restaurant clickItem = model;
viewHolder.setItemClickListener(new ItemClickListener() {
#Override
public void onClick(View view, int position, boolean isLongClick) {
Intent foodList = new Intent(RestaurantList.this, Home.class);
Common.restaurantSelected=adapter.getRef(position).getKey();
startActivity(foodList);
}
});
}
};
FirebaseRecyclerOptions<Restaurant> options2 = new FirebaseRecyclerOptions.Builder<Restaurant>()
.setQuery(FirebaseDatabase.getInstance()
.getReference()
.child("Restaurants2")
,Restaurant.class)
.build();
FirebaseRecyclerAdapter<Restaurant, RestaurantViewHolder> adapter2= new FirebaseRecyclerAdapter<Restaurant, RestaurantViewHolder>(options2) {
#NonNull
#Override
public RestaurantViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.restaurant_item, parent, false);
return new RestaurantViewHolder(itemView);
}
#Override
protected void onBindViewHolder(#NonNull RestaurantViewHolder viewHolder, int position, #NonNull Restaurant model) {
viewHolder.txt_restaurant_name.setText(model.getName());
Picasso.get().load(model.getImage())
.into(viewHolder.img_restaurant);
final Restaurant clickItem = model;
viewHolder.setItemClickListener(new ItemClickListener() {
#Override
public void onClick(View view, int position, boolean isLongClick) {
Intent foodList = new Intent(RestaurantList.this, Home.class);
Common.restaurantSelected=adapter2.getRef(position).getKey();
startActivity(foodList);
}
});
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_restaurant_list);
RelativeLayout relativeLayout = findViewById(R.id.root2_layout);
AnimationDrawable animationDrawable = (AnimationDrawable)relativeLayout.getBackground();
animationDrawable.setEnterFadeDuration(5);
animationDrawable.setExitFadeDuration(1000);
animationDrawable.start();
LinearLayoutManager layoutManager = new LinearLayoutManager(this,LinearLayoutManager.HORIZONTAL,false);
LinearLayoutManager layoutManager2 = new LinearLayoutManager(this,LinearLayoutManager.HORIZONTAL,false);
recyclerView1 = (RecyclerView) findViewById(R.id.recycler_restaurant);
recyclerView1.setLayoutManager(layoutManager);
recyclerView2 = (RecyclerView) findViewById(R.id.recycler_restaurant2);
recyclerView1.setLayoutManager(layoutManager2);
loadAsianFood();
loadSteakHouse();
}
private void loadSteakHouse() {
adapter.startListening();
recyclerView1.setAdapter(adapter);
recyclerView1.getAdapter().notifyDataSetChanged();
recyclerView1.scheduleLayoutAnimation();
}
private void loadAsianFood() {
adapter2.startListening(); // Did you mean adapter2.startListening()?
recyclerView2.setAdapter(adapter2);
recyclerView2.getAdapter().notifyDataSetChanged();
recyclerView2.scheduleLayoutAnimation();
}
#Override
protected void onStop() {
super.onStop();
adapter.stopListening();
adapter2.stopListening();;
}
#Override
protected void onResume() {
super.onResume();
if (adapter != null)
adapter.startListening();
adapter2.startListening();
}
}
It only runs the first category (Restaurant1) only.
A few problems I noticed, though I don't know if they'll solve your actual issue.
1 - You are calling startListening on the first adapter when it should be the second:
private void loadAsianFood() {
adapter.startListening(); // Did you mean adapter2.startListening()?
recyclerView2.setAdapter(adapter2);
recyclerView2.getAdapter().notifyDataSetChanged();
recyclerView2.scheduleLayoutAnimation();
}
2 - You are only stopping the first adapter, not the second.
#Override
protected void onStop() {
super.onStop();
adapter.stopListening();
}
3 - You are only resuming the first adapter, not the second:
#Override
protected void onResume() {
super.onResume();
if (adapter != null)
adapter.startListening();
}
RecyclerView recyclerView1;
RecyclerView recyclerView2;
FirebaseRecyclerOptions<Restaurant> options = new FirebaseRecyclerOptions.Builder<Restaurant>()
.setQuery(FirebaseDatabase.getInstance()
.getReference("RestaurantCategory")
.child("01").child("SteakHouse")
,Restaurant.class)
.build();
FirebaseRecyclerAdapter<Restaurant, RestaurantViewHolder> adapter = new FirebaseRecyclerAdapter<Restaurant, RestaurantViewHolder>(options) {
#NonNull
#Override
public RestaurantViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.restaurant_item, parent, false);
return new RestaurantViewHolder(itemView);
}
#Override
protected void onBindViewHolder(#NonNull RestaurantViewHolder viewHolder, int position, #NonNull Restaurant model) {
viewHolder.txt_restaurant_name.setText(model.getName());
Picasso.get().load(model.getImage())
.into(viewHolder.img_restaurant);
final Restaurant clickItem = model;
viewHolder.setItemClickListener(new ItemClickListener() {
#Override
public void onClick(View view, int position, boolean isLongClick) {
Intent foodList = new Intent(RestaurantList.this, Home.class);
Common.restaurantSelected=adapter.getRef(position).getKey();
startActivity(foodList);
}
});
}
};
FirebaseRecyclerOptions<Restaurant> options2 = new FirebaseRecyclerOptions.Builder<Restaurant>()
.setQuery(FirebaseDatabase.getInstance()
.getReference("RestaurantCategory")
.child("02").child("AsianFood")
,Restaurant.class)
.build();
FirebaseRecyclerAdapter<Restaurant, RestaurantViewHolder> adapter2= new FirebaseRecyclerAdapter<Restaurant, RestaurantViewHolder>(options2) {
#NonNull
#Override
public RestaurantViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.restaurant_item, parent, false);
return new RestaurantViewHolder(itemView);
}
#Override
protected void onBindViewHolder(#NonNull RestaurantViewHolder viewHolder, int position, #NonNull Restaurant model) {
viewHolder.txt_restaurant_name.setText(model.getName());
Picasso.get().load(model.getImage())
.into(viewHolder.img_restaurant);
final Restaurant clickItem = model;
viewHolder.setItemClickListener(new ItemClickListener() {
#Override
public void onClick(View view, int position, boolean isLongClick) {
Intent foodList = new Intent(RestaurantList.this, Home.class);
Common.restaurantSelected=adapter2.getRef(position).getKey();
startActivity(foodList);
}
});
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_restaurant_list);
RelativeLayout relativeLayout = findViewById(R.id.root2_layout);
AnimationDrawable animationDrawable = (AnimationDrawable)relativeLayout.getBackground();
animationDrawable.setEnterFadeDuration(5);
animationDrawable.setExitFadeDuration(1000);
animationDrawable.start();
LinearLayoutManager layoutManager = new LinearLayoutManager(this,LinearLayoutManager.HORIZONTAL,false);
LinearLayoutManager layoutManager2 = new LinearLayoutManager(this,LinearLayoutManager.HORIZONTAL,false);
recyclerView1 = (RecyclerView) findViewById(R.id.recycler_restaurant);
recyclerView1.setLayoutManager(layoutManager);
recyclerView2 = (RecyclerView) findViewById(R.id.recycler_restaurant2);
recyclerView1.setLayoutManager(layoutManager2);
loadAsianFood();
loadSteakHouse();
}
private void loadSteakHouse() {
adapter.startListening();
recyclerView1.setAdapter(adapter);
recyclerView1.getAdapter().notifyDataSetChanged();
recyclerView1.scheduleLayoutAnimation();
}
private void loadAsianFood() {
adapter2.startListening(); // Did you mean adapter2.startListening()?
recyclerView2.setAdapter(adapter2);
recyclerView2.getAdapter().notifyDataSetChanged();
recyclerView2.scheduleLayoutAnimation();
}
#Override
protected void onStop() {
super.onStop();
adapter.stopListening();
adapter2.stopListening();;
}
#Override
protected void onResume() {
super.onResume();
if (adapter != null)
adapter.startListening();
adapter2.startListening();
}
}
I have a firebase strucuture as
The recycler view is only displaying the last added or say latest added node to the database instead of displaying each and every node
the database reference i am using is
r2 = FirebaseDatabase.getInstance().getReference().child("Uploads").child("Wheat").child(S).child(D).child(T).child(FirebaseAuth.getInstance().getUid());
and the code for recycler view is as
public class MyPost extends AppCompatActivity {
private RecyclerView recyclerView;
private DatabaseReference r, r2, r3;
private String S, D, T;
FirebaseRecyclerAdapter<RecyclerCropView, ViewHolder2> Fbra1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_post);
r = FirebaseDatabase.getInstance().getReference().child("User_Data").child(MainDashboard.type).child(FirebaseAuth.getInstance().getUid());
recyclerView = (RecyclerView) findViewById(R.id.R_view2);
r.addListenerForSingleValueEvent(rr);
}
private ValueEventListener rr = new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
S = dataSnapshot.child("State").getValue().toString();
D = dataSnapshot.child("City").getValue().toString();
T = dataSnapshot.child("Tehsil").getValue().toString();
// Toast.makeText(MyPost.this,S+D+T.toString(),Toast.LENGTH_LONG).show();
r2 = FirebaseDatabase.getInstance().getReference().child("Uploads").child("Wheat").child(S).child(D).child(T).child(FirebaseAuth.getInstance().getUid());
// Toast.makeText(MyPost.this,r2.toString(),Toast.LENGTH_LONG).show();
r2.addChildEventListener(new ChildEventListener() {
#Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
r3=r2.child(dataSnapshot.getKey());
Toast.makeText(MyPost.this, r3.toString(), Toast.LENGTH_LONG).show();
FirebaseRecyclerOptions<RecyclerCropView> options = new FirebaseRecyclerOptions.Builder<RecyclerCropView>().setQuery(r3, RecyclerCropView.class).build();
Fbra1 = new FirebaseRecyclerAdapter<RecyclerCropView, ViewHolder2>(options) {
#Override
protected void onBindViewHolder(#NonNull ViewHolder2 holder, int position, #NonNull RecyclerCropView model) {
holder.setProductImage(model.getProduct_Image());
holder.setProduct(model.getProduct());
holder.setMax(model.getMaximumPrice());
holder.setQuantityUnit(model.getQuantityUnit());
holder.setQuantity(model.getQuantity());
}
#NonNull
#Override
public ViewHolder2 onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_post, parent, false);
return new ViewHolder2(v);
}
};
Fbra1.notifyDataSetChanged();
recyclerView.hasFixedSize();
recyclerView.setLayoutManager(new LinearLayoutManager(MyPost.this));
Fbra1.startListening();
recyclerView.setAdapter(Fbra1);
}
#Override
public void onChildChanged(DataSnapshot dataSnapshot, String s) {
}
#Override
public void onChildRemoved(DataSnapshot dataSnapshot) {
}
#Override
public void onChildMoved(DataSnapshot dataSnapshot, String s) {
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
};
#Override
protected void onRestart() {
super.onRestart();
finish();
}
}
Recycler view is only showing very last item that was added to database.
Note:-
The item.xml file has width set to wrap content.
if i remove the childEventListener the recyclerView shows multiple items with
null on the place of TextView(These are those textView on which data retrived was supposed to be set)
Here is the problem: r2.addChildEventListener
Classes implementing this interface can be used to receive events about changes in the child locations of a given DatabaseReference ref. Attach the listener to a location using addChildEventListener(ChildEventListener) and the appropriate method will be triggered when changes occur.
Firebase Docs
What you should use is a r2.addListenerForSingleValueEvent
This returns the children of the specific node. But now since you are using FirebaseUI library, you will not need to listen as it is a listener itself.
So your code should listen to the root of the posts. This r3=r2.child(dataSnapshot.getKey()); is unnecessary because it only gets one entry
Change to this
FirebaseRecyclerOptions<RecyclerCropView> options = new FirebaseRecyclerOptions.Builder<RecyclerCropView>().setQuery(r2, RecyclerCropView.class).build();
Fbra1 = new FirebaseRecyclerAdapter<RecyclerCropView, ViewHolder2>(options) {
#Override
protected void onBindViewHolder(#NonNull ViewHolder2 holder, int position, #NonNull RecyclerCropView model) {
holder.setProductImage(model.getProduct_Image());
holder.setProduct(model.getProduct());
holder.setMax(model.getMaximumPrice());
holder.setQuantityUnit(model.getQuantityUnit());
holder.setQuantity(model.getQuantity());
}
#NonNull
#Override
public ViewHolder2 onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_post, parent, false);
return new ViewHolder2(v);
}
};
Fbra1.notifyDataSetChanged();
recyclerView.hasFixedSize();
recyclerView.setLayoutManager(new LinearLayoutManager(MyPost.this));
Fbra1.startListening();
recyclerView.setAdapter(Fbra1);
I've been searching about autocomplete textview but I can't seem figure out how can i implement it in firebase recycler adapter ? I saw this thread: How can I load an AutoCompleteTextView from a list of Firebase data?
But I don't know how I can implement it in my program .
Here's my portion of my code ,
private void firebaseUserSearch(String searchText) {
String spinnerSearchs=spinnerSearch.getSelectedItem().toString();
Toast.makeText(getActivity(), "Started Search", Toast.LENGTH_LONG).show();
if(spinnerSearchs.equals("Book Title")){
Query firebaseQuerySearch = mBookDatabase.orderByChild("bookTitle").startAt(searchText).endAt(searchText + "\uf8ff");
FirebaseRecyclerOptions bookOptions= new FirebaseRecyclerOptions.Builder<Book>().setQuery(firebaseQuerySearch,Book.class).build();
mBook = new FirebaseRecyclerAdapter<Book, UsersViewHolder>(bookOptions) {
#Override
protected void onBindViewHolder(final UsersViewHolder holder, final int position,final Book model) {
holder.setDetails(model.getBookId(),model.getBookTitle(),model.getAuthorName());
holder.setItemClickListener(new ItemClickListener() {
#Override
public void OnClick(View view, int position, boolean isLongClick) {
Intent intent = new Intent(getActivity().getBaseContext(),Borrow.class);
intent.putExtra(BOOK_ID,model.getBookId());
getActivity().startActivity(intent);
}
});
holder.setIsRecyclable(false);
}
#Override
public UsersViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.book_layout,parent,false);
return new UsersViewHolder(view,bookList);
}
};
mSearchList.setAdapter(mBook);
} else if(spinnerSearchs.equals("Author")){
Query firebaseQuerySearch = mBookDatabase.orderByChild("authorName").startAt(searchText).endAt(searchText + "\uf8ff");
FirebaseRecyclerOptions bookOptions= new FirebaseRecyclerOptions.Builder<Book>().setQuery(firebaseQuerySearch,Book.class).build();
mBook = new FirebaseRecyclerAdapter<Book, UsersViewHolder>(bookOptions) {
#Override
protected void onBindViewHolder(final UsersViewHolder holder, final int position,final Book model) {
holder.setDetails(model.getBookId(),model.getBookTitle(),model.getAuthorName());
holder.setItemClickListener(new ItemClickListener() {
#Override
public void OnClick(View view, int position, boolean isLongClick) {
Intent intent = new Intent(getActivity().getBaseContext(),Borrow.class);
intent.putExtra(BOOK_ID,model.getBookId());
getActivity().startActivity(intent);
}
});
holder.setIsRecyclable(false);
}
#Override
public UsersViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.book_layout,parent,false);
return new UsersViewHolder(view,bookList);
}
};
mSearchList.setAdapter(mBook);
}
mBook.startListening();
}