"cannot resolve constructor FirebaseRecyclerAdapter" when trying to use FirebaseUI

Question

I am using FirebaseUI's FirebaseRecyclerAdapter as described in github.

But I am getting the error (cannot resolve constructor FirebaseRecyclerAdapter). Tried everything possible but still getting the same error.

Here is my activity

Firebase ref = new Firebase("https://myapp.firebaseio.com/shoplist");

RecyclerView recyclerView;
String enteredShopName;

private FirebaseRecyclerAdapter<Chat, ChatHolder> mRecyclerViewAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
    recyclerView.setHasFixedSize(true);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));

    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            createDialog();
        }
    });
}

@Override
protected void onStart() {
    super.onStart();

    attachRecyclerViewAdapter();
}

private void attachRecyclerViewAdapter() {
    mRecyclerViewAdapter = new FirebaseRecyclerAdapter<Chat, ChatHolder>(
            Chat.class, R.layout.message, ChatHolder.class, ref) {

        @Override
        public void populateViewHolder(ChatHolder chatView, Chat chat, int position) {
            chatView.setName(chat.getName());


        }
    };

               }
    });

    mRecyclerViewAdapter.setAdapter(mRecyclerViewAdapter);
}

private void createDialog() {
    AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
    LayoutInflater inflater = this.getLayoutInflater();
    final View dialogView = inflater.inflate(R.layout.addshop_dialog, null);
    dialogBuilder.setView(dialogView);

    final EditText randeephooda = (EditText) dialogView.findViewById(R.id.et_shopName);

    enteredShopName = randeephooda.getText().toString();

    dialogBuilder.setTitle("Add Shop");
    dialogBuilder.setPositiveButton("Add", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            //do something with edt.getText().toString();


            Chat chat = new Chat(enteredShopName);
            ref.push().setValue(chat);
        }
    });

    dialogBuilder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            //pass
        }
    });

    AlertDialog b = dialogBuilder.create();
    b.show();
}

My pojo

    String name;

    public Chat() {
    }

    public Chat(String name) {
        this.name = name;

    }

    public String getName() {
        return name;
    }

My ViewHolder

    public ChatHolder(View itemView) {
        super(itemView);
        mView = itemView;
    }

    public void setName(String name) {
        TextView field = (TextView) mView.findViewById(R.id.shoprecyclerview_textView);
        field.setText(name);
    }
}

Please provide the error and the link to the github class you are using. You also may want to [edit] your question to show a [mcve] — OneCricketeer, May 28 '16 at 15:10
@cricket_007 Here is the link (https://github.com/firebase/FirebaseUI-Android/blob/master/app/src/main/java/com/firebase/uidemo/ChatActivity.java) — Mehul Kanzariya, May 28 '16 at 15:22
If Android Studio can't find the`FirebaseRecyclerAdapter` class, you're missing this import `import com.firebase.ui.database.FirebaseRecyclerAdapter;` or this dependency `compile 'com.firebaseui:firebase-ui-database:0.4.0'`. — Frank van Puffelen, May 28 '16 at 15:23
If it can't resolve the constructor, then your object types are incorrect. Check your imports against the documented constructor — OneCricketeer, May 28 '16 at 15:39

score 3 · Answer 1 · answered May 28 '16 at 16:40

3

Change

mRecyclerViewAdapter.setAdapter(mRecyclerViewAdapter);//this line caused error

to

recyclerView.setAdapter(mRecyclerViewAdapter);//Need to set adapter to the recyclerview

Done.

answered May 28 '16 at 16:40

pRaNaY

24,642
24
96
146

1

Good catch. Would have been easier to spot if the error message was more descriptive in the question – OneCricketeer May 28 '16 at 16:49
1

Well spotted indeed – Frank van Puffelen May 29 '16 at 00:28

score 0 · Answer 2 · edited May 23 '17 at 11:51

0

Please view answer here:

Problem is using the old firebase code when creating a reference

Firebase ref = new Firebase("https://myapp.firebaseio.com/shoplist");

Migrate to new firebase code and use this instead:

DatabaseReference rootRef = FirebaseDatabase.getInstance().getReference();

edited May 23 '17 at 11:51

Community

1
1

answered Jun 04 '16 at 09:03

Higen

77
5

I'm using the new reference but still the `populateViewHolder`method is never called, see : http://stackoverflow.com/questions/38263758/populateviewholder-not-executing-with-firebaserecycleradapter-android. Any ideas? Thanks! – raphh Jul 08 '16 at 10:26

"cannot resolve constructor FirebaseRecyclerAdapter" when trying to use FirebaseUI

2 Answers2