Develop Reference

Android Studio Find Friends is not working using firebase realtime database(E/RecyclerView: No adapter attached; skipping layout)

I'm a cs student and now I have to write an app using firebase and android studio for a project.
I'm so new in this and now I faced a problem. in my FindFriends activity when i run my app and then search for any user it starts to show all the users(Even deleted one) and not the one I searched in the box.
also it says E/RecyclerView: No adapter attached; skipping layout and I couldn't find why?
Here is my FindFriends Activity:
{
private Toolbar mToolbar;
private ImageButton SearchButton;
private EditText SearchInputText; //searchField
private RecyclerView SearchResultList;
private DatabaseReference allUsersDatabaseRef;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_find_friends);
allUsersDatabaseRef = FirebaseDatabase.getInstance().getReference().child("Users");
mToolbar = (Toolbar) findViewById(R.id.find_friends_app_bar_layout);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setTitle("Search For Friends");
SearchResultList = (RecyclerView) findViewById(R.id.search_result_list);
SearchResultList.setHasFixedSize(true);
SearchResultList.setLayoutManager(new LinearLayoutManager(this));
SearchButton = (ImageButton) findViewById(R.id.search_for_friends_button);
SearchInputText = (EditText) findViewById(R.id.search_box_input);
SearchButton.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
String searchBoxInput = SearchInputText.getText().toString();
SearchForFriends(searchBoxInput);
}
});
}
private void SearchForFriends(String searchBoxInput)
{
Toast.makeText(this, "Searching...", Toast.LENGTH_LONG).show();
Query searchForFriendsQuery = allUsersDatabaseRef.orderByChild("fullname")
.startAt(searchBoxInput).endAt(searchBoxInput + "\uf8ff");
FirebaseRecyclerOptions<FindFriends> option =
new FirebaseRecyclerOptions.Builder<FindFriends>()
.setQuery(allUsersDatabaseRef, FindFriends.class)
.build();
FirebaseRecyclerAdapter<FindFriends, FindFriendsViewHolder> firebaseRecyclerAdapter
= new FirebaseRecyclerAdapter<FindFriends, FindFriendsViewHolder>(option)
{
#Override
protected void onBindViewHolder(#NonNull FindFriendsViewHolder holder, final int position, #NonNull FindFriends model)
{
holder.setFullname(model.getFullname());
holder.setStatus(model.getStatus());
holder.setProfileimage(getApplicationContext(), model.getProfileimage());
holder.mView.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
String visit_user_id = getRef(position).getKey();
Intent profileIntent = new Intent(FindFriendsActivity.this, PersonProfileActivity.class);
profileIntent.putExtra("visit_user_id", visit_user_id);
startActivity(profileIntent);
}
});
}
#NonNull
#Override
public FindFriendsViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType)
{
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.all_users_display_layout,parent, false);
FindFriendsViewHolder viewHolder = new FindFriendsViewHolder(view);
return viewHolder;
}
};
firebaseRecyclerAdapter.startListening();
SearchResultList.setAdapter(firebaseRecyclerAdapter);
}
public class FindFriendsViewHolder extends RecyclerView.ViewHolder
{
View mView;
public FindFriendsViewHolder(#NonNull View itemView) {
super(itemView);
mView = itemView;
}
public void setProfileimage(Context ctx ,String profileimage)
{
CircleImageView myImage = (CircleImageView) mView.findViewById(R.id.all_users_profile_image);
Picasso.get().load(profileimage).placeholder(R.drawable.profile).into(myImage);
}
public void setFullname(String fullname)
{
TextView myName = (TextView) mView.findViewById(R.id.all_users_full_name);
myName.setText(fullname);
}
public void setStatus(String status)
{
TextView myStatus = (TextView) mView.findViewById(R.id.all_users_Status);
myStatus.setText(status);
}
}
}
also my FindFriends class:
package com.example.pingoo;
public class FindFriends
{
public String profileimage, fullname, status;
public FindFriends()
{
}
public FindFriends(String profileimage, String fullname, String status) {
this.profileimage = profileimage;
this.fullname = fullname;
this.status = status;
}
public String getProfileimage() {
return profileimage;
}
public void setProfileimage(String profileimage) {
this.profileimage = profileimage;
}
public String getFullname() {
return fullname;
}
public void setFullname(String fullname) {
this.fullname = fullname;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
}
I will appreciate if anyone could help me with this because it's sooo nesseccary for me

The searchForFriendsQuery looks fine to me at first glance. But that's not what you're passing to the adapter, as you're still using allUsersDatabaseRef there:
.setQuery(allUsersDatabaseRef, FindFriends.class)
That should probably be:
.setQuery(searchForFriendsQuery, FindFriends.class)

How to retrieve just specific data in Recycler View using Firebase Database?

I have a problem with retrieving specific data from Firebase Realtime Database. My problem is that I want to display in RecyclerView just the materials that has the Course_ID (as you can see in the image below) equals to the Course_ID (see Course -> Teacher-Courses in Firebase). How can I accomplish that thing? I will attach the code used in the RecyclerView and the class that contains the model.
As a mention: 1.I have tried to add all the course id's from Firebase and store them to a List, but the app doesn't show anything and 2. In another class I have an Intent that sends me here and also send a extra String with Course_ID that I have accesed.
I am waiting for your responses. Thank you!
FileMaterial.class
public class FileMaterial {
private String Course_ID;
private String Denumire_material;
private String Locatie_material;
private String Teacher_ID;
public FileMaterial() {
}
public FileMaterial(String course_ID, String denumire_material, String locatie_material, String teacher_ID) {
Course_ID = course_ID;
Denumire_material = denumire_material;
Locatie_material = locatie_material;
Teacher_ID = teacher_ID;
}
public String getCourse_ID() {
return Course_ID;
}
public void setCourse_ID(String course_ID) {
Course_ID = course_ID;
}
public String getDenumire_material() {
return Denumire_material;
}
public void setDenumire_material(String denumire_material) {
Denumire_material = denumire_material;
}
public String getLocatie_material() {
return Locatie_material;
}
public void setLocatie_material(String locatie_material) {
Locatie_material = locatie_material;
}
public String getTeacher_ID() {
return Teacher_ID;
}
public void setTeacher_ID(String teacher_ID) {
Teacher_ID = teacher_ID;
}
CourseMaterial.class
public class CourseMaterial extends AppCompatActivity {
private RecyclerView recyclerView;
private DatabaseReference reference, userReference;
private FirebaseAuth mAuth;
FirebaseRecyclerOptions<FileMaterial> options;
FirebaseRecyclerAdapter<FileMaterial, CourseMaterial.FileViewHolder> adapter;
ImageView btnAddMaterial;
ImageView deleteMaterial;
StorageReference storageReference;
FirebaseStorage firebaseStorage;
String urlReference;
String value;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_course_material);
value = getIntent().getStringExtra("course id").toString();
mAuth = FirebaseAuth.getInstance();
reference = FirebaseDatabase.getInstance().getReference().child("Materials").child(mAuth.getCurrentUser().getUid());
recyclerView = findViewById(R.id.recyclerView_fileMaterials);
recyclerView.setLayoutManager(new LinearLayoutManager(getApplicationContext()));
btnAddMaterial = findViewById(R.id.addMaterials);
btnAddMaterial.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(CourseMaterial.this, UploadFile.class));
}
});
}
#Override
public void onStart() {
super.onStart();
options = new FirebaseRecyclerOptions.Builder<FileMaterial>().setQuery(reference, FileMaterial.class).build();
adapter = new FirebaseRecyclerAdapter<FileMaterial, FileViewHolder>(options) {
#Override
protected void onBindViewHolder(#NonNull final FileViewHolder fileViewHolder, int i, #NonNull final FileMaterial fileMaterial) {
fileViewHolder.denumire_material.setText(fileMaterial.getDenumire_material());
}
#NonNull
#Override
public FileViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.youtube_view,parent, false);
FileViewHolder fileViewHolder = new FileViewHolder(v);
return fileViewHolder;
}
};
adapter.startListening();
recyclerView.setAdapter(adapter);
}
public static class FileViewHolder extends RecyclerView.ViewHolder{
TextView denumire_material, dataMaterial;
ImageView deleteMaterial;
public FileViewHolder(#NonNull View itemView) {
super(itemView);
denumire_material = itemView.findViewById(R.id.txtDenMaterial);
deleteMaterial = itemView.findViewById(R.id.imgDeleteMaterial);
}
}

Maybe make a query and pass it to the options of the adapter:
#Override
public void onStart() {
super.onStart();
Query query = reference.orderByChild("Course_ID").equalTo(value);
options = new FirebaseRecyclerOptions.Builder<FileMaterial>().setQuery(query, FileMaterial.class).build();
.......
.......
.......

how to remove item from Recyclerview

friends...
In my project, I am creating a list of images from the server and showing in Recyclerview.
now I want to remove a particular item from the list when I click on the verify button.
I tried to hide holder.itemview but its see again when I scroll.
I just want to remove or hide that item which is verified once.
here is my code :
1) Main activity
public class MainActivity extends AppCompatActivity {
private static final String url = "www.mysite.com/api/api-id-list.php?action=imgs";
private ProgressDialog mDetailProgress;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_main_activity);
LoadRecyclerView();
}
private void LoadRecyclerView() {
mDetailProgress = new ProgressDialog(this);
mDetailProgress.setTitle("Loading images");
mDetailProgress.setMessage("Please Wait...");
mDetailProgress.setCanceledOnTouchOutside(false);
mDetailProgress.show();
final RecyclerView imgList = (RecyclerView) findViewById(R.id.imgList);
imgList.setLayoutManager(new LinearLayoutManager(this));
StringRequest request = new StringRequest(url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
GsonBuilder gsonBuilder = new GsonBuilder();
Gson gson = gsonBuilder.create();
Image[] images = gson.fromJson(response, Image[].class);
imgList.setAdapter(new ImageAdapter(MainActivity.this, images));
mDetailProgress.dismiss();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getBaseContext(), "Something went wrong..!", Toast.LENGTH_LONG);
}
});
RequestQueue queue = Volley.newRequestQueue(this);
queue.add(request);
}}
2) ImageAdapter
public class ImageAdapter extends RecyclerView.Adapter<ImageAdapter.ImageViewHolder> {
private ProgressDialog mDetailProgress;
private Context context;
private Image[] data;
Button btn_ban, btn_verify;
private View view;
public ImageAdapter (Context context, Image[] data) {
this.context = context;
this.data = data;
}
#NonNull
#Override
public ImageViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int i) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
view = inflater.inflate(R.layout.single_item, parent, false);
return new ImageViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull final ImageViewHolder holder, final int position) {
final Image imagelist = data[position];
holder.userCode.setText(imagelist.getCode());
Glide.with(holder.userImage.getContext()).load(imagelist.getIdPhoto()).into(holder.userImage);
btn_verify.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
holder.itemView.setVisibility(View.GONE);
}
});
}
#Override
public int getItemCount() { return data.length; }
public class ImageViewHolder extends RecyclerView.ViewHolder {
TextView userCode;
ImageView userImage;
public ImageViewHolder(#NonNull View itemView) {
super(itemView);
userImage = (ImageView) itemView.findViewById(R.id.card_iv_img);
userCode = (TextView) itemView.findViewById(R.id.card_tv_code);
btn_ban = (Button) itemView.findViewById(R.id.btn_ban);
btn_verify = (Button) itemView.findViewById(R.id.btn_verify);
}
}}
3) Image.java
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
public class Image {
#SerializedName("per_ID")
#Expose
private String perID;
#SerializedName("code")
#Expose
private String code;
#SerializedName("first_nm")
#Expose
private String firstNm;
#SerializedName("last_nm")
#Expose
private String lastNm;
#SerializedName("photo_ID")
#Expose
private String photoID;
#SerializedName("id_photo")
#Expose
private String idPhoto;
public String getPerID() {
return perID;
}
public void setPerID(String perID) {
this.perID = perID;
}
public Image withPerID(String perID) {
this.perID = perID;
return this;
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public Image withCode(String code) {
this.code = code;
return this;
}
public String getFirstNm() {
return firstNm;
}
public void setFirstNm(String firstNm) {
this.firstNm = firstNm;
}
public Image withFirstNm(String firstNm) {
this.firstNm = firstNm;
return this;
}
public String getLastNm() {
return lastNm;
}
public void setLastNm(String lastNm) {
this.lastNm = lastNm;
}
public Image withLastNm(String lastNm) {
this.lastNm = lastNm;
return this;
}
public String getPhotoID() {
return photoID;
}
public void setPhotoID(String photoID) {
this.photoID = photoID;
}
public Image withPhotoID(String photoID) {
this.photoID = photoID;
return this;
}
public String getIdPhoto() {
return idPhoto;
}
public void setIdPhoto(String idPhoto) {
this.idPhoto = idPhoto;
}
public Image withIdPhoto(String idPhoto) {
this.idPhoto = idPhoto;
return this;
}}

First make data not array, but List, so it's easy to remove item;
Secondly set listener for verify button inside ViewHolder and inside OnClick remove item and notify adapter.
btn_verify.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int position = getAdapterPosition();
data.remove(position);
notifyItemRemoved(position);
}
});
Note: Setting OnClickListener inside ViewHolder makes sure that only correct item is removed by using getAdapterPosition() to get correct position.
Position provided by onBindViewHolder might be invalid after new items are inserted.

Android firebase query search title issue

This is SearchActivity.java
public class SearchActivity extends AppCompatActivity
{
/*UI*/
private EditText mSearchText;
private Button mSearchBtn;
private Toolbar mSearchToolbar;
private FragmentPagerAdapter mPagerAdapter;
private ViewPager mViewPager;
private String value;
private TextWatcher tw;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search);
mSearchText = (EditText)findViewById(R.id.activity_search_search_text);
mSearchBtn = (Button)findViewById(R.id.activity_search_search_btn);
mSearchToolbar = (Toolbar)findViewById(R.id.activity_search_toolbar);
setSupportActionBar(mSearchToolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setTitle(null);
mSearchBtn.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
value = mSearchText.getText().toString();
Toast.makeText(SearchActivity.this, "value test 1: " + value, Toast.LENGTH_LONG).show();
searchText(value);
}
});
}
private void searchText(final String value)
{
Toast.makeText(SearchActivity.this, "value test 2: " + value, Toast.LENGTH_LONG).show();
mPagerAdapter = new FragmentPagerAdapter(getSupportFragmentManager())
{
private final Fragment[] mFragments = new Fragment[]
{
new FragmentSearch(value)
};
#Override
public Fragment getItem(int position)
{
return mFragments[position];
}
#Override
public int getCount()
{
return mFragments.length;
}
};
mViewPager = (ViewPager) findViewById(R.id.activity_search_view_pager);
mViewPager.setAdapter(mPagerAdapter);
}
}
This is FragmentSearch.java
public class FragmentSearch extends MainFragment
{
public String value;
public FragmentSearch(String value)
{
this.value = value;
}
#Override
public Query getQuery(DatabaseReference databaseReference)
{
Toast.makeText(getActivity().this, "value test 3: " + value, Toast.LENGTH_LONG).show();
Query postsQuery = databaseReference.child("Post").orderByChild("title").equalTo(value);
return postsQuery;
}
}
This is MainFragment.java
public abstract class MainFragment extends Fragment
{
private DatabaseReference mDatabase;
private FirebaseRecyclerAdapter<Post, PostViewHolder> mAdapter;
private RecyclerView mRecycler;
private LinearLayoutManager mManager;
public MainFragment()
{
}
#Override
public View onCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
super.onCreateView(inflater, container, savedInstanceState);
View rootView = inflater.inflate(R.layout.fragment_all_posts, container, false);
mDatabase = FirebaseDatabase.getInstance().getReference();
mRecycler = (RecyclerView)rootView.findViewById(R.id.messages_list);
mRecycler.setHasFixedSize(true);
return rootView;
}
#Override
public void onActivityCreated(Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
mManager = new LinearLayoutManager(getActivity());
mManager.setReverseLayout(true);
mManager.setStackFromEnd(true);
mRecycler.setLayoutManager(mManager);
Query postsQuery = getQuery(mDatabase);
mAdapter = new FirebaseRecyclerAdapter<Post, PostViewHolder>(Post.class, R.layout.item_post,
PostViewHolder.class, postsQuery)
{
#Override
protected void populateViewHolder(final PostViewHolder viewHolder, final Post model, final int position)
{
final DatabaseReference postRef = getRef(position);
final String postKey = postRef.getKey();
viewHolder.itemView.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
// Intent intent = new Intent(getActivity(), PostDetailActivity.class);
// intent.putExtra(PostDetailActivity.EXTRA_POST_KEY, postKey);
// startActivity(intent);
}
});
if(model.stars.containsKey(getUid()))
{
viewHolder.starView.setImageResource(R.drawable.ic_toggle_star_24);
}
else
{
viewHolder.starView.setImageResource(R.drawable.ic_toggle_star_outline_24);
}
viewHolder.bindToPost(model, new View.OnClickListener()
{
#Override
public void onClick(View starView)
{
DatabaseReference globalPostRef = mDatabase.child("Post").child(postRef.getKey());
DatabaseReference userPostRef = mDatabase.child("UserPost").child(model.uid).child(postRef.getKey());
onStarClicked(globalPostRef);
onStarClicked(userPostRef);
}
});
}
};
mRecycler.setAdapter(mAdapter);
}
private void onStarClicked(DatabaseReference postRef) {
postRef.runTransaction(new Transaction.Handler() {
#Override
public Transaction.Result doTransaction(MutableData mutableData) {
Post p = mutableData.getValue(Post.class);
if (p == null) {
return Transaction.success(mutableData);
}
if (p.stars.containsKey(getUid())) {
// Unstar the post and remove self from stars
p.starCount = p.starCount - 1;
p.stars.remove(getUid());
} else {
// Star the post and add self to stars
p.starCount = p.starCount + 1;
p.stars.put(getUid(), true);
}
// Set value and report transaction success
mutableData.setValue(p);
return Transaction.success(mutableData);
}
#Override
public void onComplete(DatabaseError databaseError, boolean b,
DataSnapshot dataSnapshot) {
}
});
}
#Override
public void onDestroy()
{
super.onDestroy();
if (mAdapter != null)
{
mAdapter.cleanup();
}
}
public String getUid()
{
return FirebaseAuth.getInstance().getCurrentUser().getUid();
}
public abstract Query getQuery(DatabaseReference databaseReference);
}
This is PostViewHolder.java
public class PostViewHolder extends RecyclerView.ViewHolder
{
public TextView titleView;
public TextView authorView;
public ImageView starView;
public TextView numStarsView;
public TextView bodyView;
public PostViewHolder(View itemView)
{
super(itemView);
titleView = (TextView) itemView.findViewById(R.id.post_title);
authorView = (TextView) itemView.findViewById(R.id.post_author);
starView = (ImageView) itemView.findViewById(R.id.star);
numStarsView = (TextView) itemView.findViewById(R.id.post_num_stars);
bodyView = (TextView) itemView.findViewById(R.id.post_body);
}
public void bindToPost(Post post, View.OnClickListener starClickListener)
{
titleView.setText(post.title);
authorView.setText(post.author);
numStarsView.setText(String.valueOf(post.starCount));
bodyView.setText(post.body);
starView.setOnClickListener(starClickListener);
}
}
This is Post.java
#IgnoreExtraProperties
public class Post
{
public String uid;
public String author;
public String title;
public String body;
public int starCount = 0;
public String type;
public Map<String, Boolean> stars = new HashMap<>();
public Post()
{
}
public Post(String uid, String author, String title, String body, String type)
{
this.uid = uid;
this.author = author;
this.title = title;
this.body = body;
this.type = type;
}
#Exclude
public Map<String, Object> toMap()
{
HashMap<String, Object> result = new HashMap<>();
result.put("uid", uid);
result.put("author", author);
result.put("title", title);
result.put("body", body);
result.put("starCount", starCount);
result.put("stars", stars);
result.put("type", type);
return result;
}
}
Thank you so much for reading. I created a program to search title of the posts. When I type title in the EditText then press Search button, my toast1 test, toast2 test, and toast3 test give correct and same value and it successfully lists what I want with Query. But the problem is that when I type different text in EditText after deleting the previous text then press enter, toast3 test(in FragmentSearch.java) stays the same and does not change value. So, it just gives the previous result, not changed result. Can anyone assist me with this? Thank you!

The problem is that you only change the value on the FragmentSearch constructor. And this constructor is only called once, and not when you press Enter.
You should change your getQuery method to have this value as a parameter.
On your MainFragment.java:
public abstract Query getQuery(DatabaseReference databaseReference, String value);
On your FragmentSearch.java:
#Override
public Query getQuery(DatabaseReference databaseReference, String value)
{
this.value = value;
Toast.makeText(getActivity().this, "value test 3: " + value, Toast.LENGTH_LONG).show();
Query postsQuery = databaseReference.child("Post").orderByChild("title").equalTo(value);
return postsQuery;
}

FirebaseRecyclerAdapter not showing data in Fragment

I've a Fragment where I'm trying to show the ListView using FirebaseRecyclerAdapter which comes in compile 'com.firebaseui:firebase-ui:0.4.2'.
My Fragment code goes like this :
public class HomeFragment extends Fragment {
private RecyclerView services_list;
private DatabaseReference mDatabase;
public HomeFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_home, container, false);
// Inflate the layout for this fragment
return view;
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mDatabase = FirebaseDatabase.getInstance().getReference().child("AllServices");
mDatabase.keepSynced(true);
services_list = (RecyclerView) view.findViewById(R.id.services_list);
services_list.setHasFixedSize(true);
services_list.setLayoutManager(new LinearLayoutManager(getContext()));
}
#Override
public void onStart() {
super.onStart();
FirebaseRecyclerAdapter<Services, ServiceViewHolder> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<Services, ServiceViewHolder>(
Services.class,
R.layout.service_row,
ServiceViewHolder.class,
mDatabase
) {
#Override
protected void populateViewHolder(ServiceViewHolder viewHolder, Services model, final int position) {
viewHolder.setServiceName(model.getName());
viewHolder.setServicePrice(model.getPrice());
viewHolder.setImage(getContext(), model.getImageUrl());
viewHolder.service_name_textview.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getContext(), "Clicked on Service Name "+(position+1), Toast.LENGTH_SHORT).show();
}
});
viewHolder.service_price_text_view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getContext(), "Clicked on Service Price "+(position+1), Toast.LENGTH_SHORT).show();
}
});
viewHolder.service_image.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getContext(), "Clicked on Service Image "+(position+1), Toast.LENGTH_SHORT).show();
}
});
}
};
services_list.setAdapter(firebaseRecyclerAdapter);
}
public static class ServiceViewHolder extends RecyclerView.ViewHolder
{
View mView;
TextView service_name_textview;
TextView service_price_text_view;
ImageView service_image;
public ServiceViewHolder(View itemView) {
super(itemView);
mView = itemView;
}
public void setServiceName(String title)
{
service_name_textview = (TextView) mView.findViewById(R.id.service_name_textview);
service_name_textview.setText(title);
}
public void setServicePrice(String desc)
{
service_price_text_view = (TextView) mView.findViewById(R.id.service_price_text_view);
service_price_text_view.setText(desc);
}
public void setImage(final Context ctx, final String image)
{
service_image = (ImageView) mView.findViewById(R.id.service_image);
//Picasso.with(ctx).load(image).into(post_image);
Picasso.with(ctx).load(image).networkPolicy(NetworkPolicy.OFFLINE).into(service_image, new Callback() {
#Override
public void onSuccess() {
}
#Override
public void onError() {
Picasso.with(ctx).load(image).into(service_image);
}
});
}
}
}
My Services.java code goes like this :
public class Services {
private String Name;
private String ImageUrl;
private String Price;
public Services() {
}
public Services(String name, String imageUrl, String price) {
Name = name;
ImageUrl = imageUrl;
Price = price;
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public String getImageUrl() {
return ImageUrl;
}
public void setImageUrl(String imageUrl) {
ImageUrl = imageUrl;
}
public String getPrice() {
return Price;
}
public void setPrice(String price) {
Price = price;
}
}
There are 21 rows to be displayed into the RecyclerView.
NOTE : once when I installed app for the first time then the data get loaded into the recyclerview (and in the logcat there was images link from where the images were getting downloaded) but after that the data never loaded into the app.
I'm really trying hard to get it sorted but nothing seems to help.

Same problem occurred me. Simply remove the service_list.setHasFixedSize(true).

Sometimes there is an issue in sizing of Recycleview
I also had the same problem that I fixed it with setting
android:layout_width="match_parent"
android:layout_height="match_parent"
just set height and width to match_parent