I can not find the populateViewHolder method in class FirebaseRecyclerAdapter

Question

I want to use FirebaseRecyclerAdapterin my project, and I used this code segment in a previous project

FirebaseRecyclerAdapter<ChatMessage, ChatMessageViewHolder> adapter = new FirebaseRecyclerAdapter<ChatMessage, ChatMessageViewHolder>(ChatMessage.class, android.R.layout.two_line_list_item, ChatMessageViewHolder.class, ref) {
              public void populateViewHolder(ChatMessageViewHolder chatMessageViewHolder, ChatMessage chatMessage, int position) {
                  chatMessageViewHolder.nameText.setText(chatMessage.getName());
                  chatMessageViewHolder.messageText.setText(chatMessage.getMessage());
              }
          };
         recycler.setAdapter(mAdapter);

and it worked fine, but now it no longer works. Is there an update in the new version FirebaseUithat prevents me from reusing this code now?

I tried this in my project

 @Override
    protected void onStart() {
        super.onStart();
        FirebaseRecyclerAdapter<BlogModel, BlogListViewHolder> adapter = new FirebaseRecyclerAdapter<BlogModel, BlogListViewHolder>(BlogModel.class, android.R.layout.two_line_list_item, BlogListViewHolder.class, mDatabaseReference) {
            public void populateViewHolder(BlogListViewHolder blogListViewHolder, BlogModel blogModel, int position) {
                blogListViewHolder.postTitle.setText(blogModel.getPostTitle());
                blogListViewHolder.postDesc.setText(blogModel.getPostDesc());

            }
        };
        mBlogList.setAdapter(adapter);
    }

and Android Studio gives a message that you should implement the method onCreateViewHolder,onBindViewHolder.

Class BlogListViewHolder

public static class BlogListViewHolder extends RecyclerView.ViewHolder {

        ImageView postImage;
        TextView postTitle;
        TextView postDesc;

        public BlogListViewHolder(View view) {
            super(view);
            postImage = view.findViewById(R.id.blog_image_id);
            postTitle = view.findViewById(R.id.blog_title_id);
            postDesc = view.findViewById(R.id.blog_desc_id);
            view.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                }
            });

        }

    }

I use this dependency

dependencies {



 compile fileTree(dir: 'libs', include: ['*.jar'])
        androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
            exclude group: 'com.android.support', module: 'support-annotations'
        })
        compile 'com.android.support:appcompat-v7:26.0.2'
        compile 'com.google.firebase:firebase-auth:11.4.2'
        compile 'com.google.firebase:firebase-database:11.4.2'
        compile 'com.google.firebase:firebase-storage:11.4.2'
        compile 'com.firebaseui:firebase-ui-database:3.1.0'
        compile 'com.firebaseui:firebase-ui-firestore:3.1.0'
        compile 'com.firebaseui:firebase-ui-auth:3.1.0'
        compile 'com.firebaseui:firebase-ui-storage:3.1.0'
        testCompile 'junit:junit:4.12'
        compile 'com.squareup.picasso:picasso:2.5.2'

    }
    apply plugin: 'com.google.gms.google-services'

Answer 1

The syntax has changed. The section of the document describing the calls is here:

https://github.com/firebase/FirebaseUI-Android/blob/master/database/README.md

gradle Firebase Database FirebaseUI:

// FirebaseUI for Firebase Realtime Database
compile 'com.firebaseui:firebase-ui-database:3.1.0'
compile 'com.google.firebase:firebase-database:11.4.2'

ViewHolder Model. .

:

private RecyclerView mPeopleRV;
private FirebaseRecyclerAdapter<PersonModel, PeopleVH> mPeopleRVAdapter;

onCreateView() :

mPeopleRV = v.findViewById(R.id.peopleRV);

onActivityStarted() .

onCreateViewHolder - , . bindViewHolder() - , , Firebase.

, , .

    DatabaseReference personsRef = FirebaseDatabase.getInstance().getReference().child("People");
    Query personsQuery = personsRef.orderByKey();

    mPeopleRV.hasFixedSize();
    mPeopleRV.setLayoutManager(new LinearLayoutManager(getActivity()));

    FirebaseRecyclerOptions personsOptions = new FirebaseRecyclerOptions.Builder<PersonModel>().setQuery(personsQuery, PersonModel.class).build();

    mPeopleRVAdapter = new FirebaseRecyclerAdapter<PersonModel, PeopleVH>(personsOptions) {
        @Override
        protected void onBindViewHolder(PeopleVH holder, int position, PersonModel model) {
            holder.setPersonFirstName(model.getFirstName());
            holder.setPersonLastName(model.getLastName());
        }

        @Override
        public PeopleVH onCreateViewHolder(ViewGroup parent, int viewType) {

            View view = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.single_row_people_rv, parent, false);

            return new PeopleVH(view);
        }
    };

    mPeopleRV.setAdapter(mPeopleRVAdapter);

:

onStart() onStop():

@Override
public void onStart() {
    super.onStart();
    mPeopleRVAdapter.startListening();
}

@Override
public void onStop() {
    super.onStop();
    mPeopleRVAdapter.stopListening();
}