Unable to use custom layout in FirebaseRecyclerAdapter (Android Studio)

Question

In my blog app, post that include (title, description, and image). Unable to retrieve data from Firebase and show it using RecyclerView adapter. I am unable to identify the problem where it is. Code is:-

public class MainActivity extends AppCompatActivity {

    private RecyclerView mBlogList;

    private DatabaseReference mDatabase;

    private static final String TAG = "MainActivity";

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

        mDatabase = FirebaseDatabase.getInstance().getReference().child("Blog");

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

    }

    @Override
    protected void onStart() {
        super.onStart();
        Query query = FirebaseDatabase.getInstance()
                .getReference()
                .child("Blog_Images");

        FirebaseRecyclerOptions<Blog> options =
                new FirebaseRecyclerOptions.Builder<Blog>()
                        .setQuery(query, Blog.class)
                        .build();

        FirebaseRecyclerAdapter<Blog, BlogViewHolder> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<Blog, BlogViewHolder>
                (options) {
            @Override
            public BlogViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.blog_row,parent,false);
                return new BlogViewHolder(view);
            }
            @Override
            protected void onBindViewHolder(@NonNull BlogViewHolder holder, int position, @NonNull Blog model) {
                holder.setTitle(model.getTitle());
                holder.setDescription(model.getDescription());
                holder.setImage(getApplicationContext(),model.getImage());
            }
        };
        mBlogList.setAdapter(firebaseRecyclerAdapter);
    }

    public class BlogViewHolder extends RecyclerView.ViewHolder {

        View mView;

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

        public void setTitle(String title)
        {
            TextView post_title = (TextView) mView.findViewById(R.id.post_title);
            post_title.setText(title);
        }

        public void setDescription(String desc)
        {
            TextView post_desc = (TextView) mView.findViewById(R.id.post_desc);
            post_desc.setText(desc);
        }

        public void setImage(Context ctx, String image)
        {
            ImageView post_image = (ImageView) mView.findViewById(R.id.post_image);
            //Picasso.with(ctx).load(image).into(post_image);
            Glide.with(MainActivity.this).load(image).into(post_image);
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main_menu,menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == R.id.action_add)
        {
            startActivity(new Intent(MainActivity.this,PostActivity.class));
        }
        return super.onOptionsItemSelected(item);
    }
}

My MainActivity is just blank. I don't know where is the problem. I tried ValueEventListener, addValueEventListener but no result, in fact it says in LOGCAT:

Unable to find layout, skipping this

Possible duplicate of [Android ListView adapter not pushing individual items for chat app - Firebase-Ui 3.1](https://stackoverflow.com/questions/47228262/android-listview-adapter-not-pushing-individual-items-for-chat-app-firebase-ui) — Peter Haddad, Jan 28 '18 at 15:59
also above .setQuery(query, Blog.class) write .setLayout(...) your layout — Peter Haddad, Jan 28 '18 at 17:16
it says `unable to resolve setLayout` when writing it doesn't show any method setLayout. — Anish Arya, Jan 28 '18 at 17:20
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/164043/discussion-between-peter-haddad-and-anish-arya). — Peter Haddad, Jan 28 '18 at 17:35
just click on `continue this discussion in chat` in my comment — Peter Haddad, Jan 28 '18 at 17:37
@PeterHaddad ineed help, cant add post to the database, when clicked on submit button nothing happens — Anish Arya, Apr 22 '18 at 07:35

score 1 · Accepted Answer · answered Jan 28 '18 at 18:27

1

After talking with OP in chat, he exported the JSON and the parent node had the name Blog and not Blog_images, so I told him to change this:

 Query query = FirebaseDatabase.getInstance()
            .getReference()
            .child("Blog_Images");

into this:

 Query query = FirebaseDatabase.getInstance()
            .getReference()
            .child("Blog");

answered Jan 28 '18 at 18:27

Peter Haddad

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thankyou so much for the help. i was stuck here for 7 days – Anish Arya Jan 28 '18 at 18:31
hey there, i need your help in firebase again, when can we chat? – Anish Arya Apr 19 '18 at 07:07
please ask it as a question and hope for the best, it is better maybe someone else can help you also – Peter Haddad Apr 19 '18 at 07:11
i am unable to retrieve image from my firebase database. i tried picasso and glide both, but unable to fetch image from database. no errors, gave internet permisssion, cant identify anything in logcat – Anish Arya Apr 19 '18 at 07:13
please ask it as a question with code of the specific problem provided – Peter Haddad Apr 19 '18 at 07:20
help, cant add new post,items to database, when clicked on submit button, nothing happens – Anish Arya Apr 22 '18 at 07:36

Unable to use custom layout in FirebaseRecyclerAdapter (Android Studio)

1 Answers1