Ndtyjky

I'm making a wallpaper app and I'm trying to make category section with a category text over a wallpaper representing the category (Like Text - nature, picture - forest). The problem is, that nothing shows up when I play the app, but there is no errors as well, everything should be working fine, but it doesnt.

Firebase rules are all set up.

I've granted access to the internet for the app.

Dependencies:

dependencies {

implementation 'com.squareup.picasso:picasso:2.71828'

implementation 'com.firebaseui:firebase-ui-database:3.+'

implementation fileTree(dir: 'libs', include: ['*.jar'])

implementation 'com.android.support:appcompat-v7:28.0.0'

implementation 'com.android.support:recyclerview-v7:28.0.0'

implementation 'com.android.support:cardview-v7:28.0.0'

implementation 'com.android.support:design:28.0.0'

implementation 'com.android.support.constraint:constraint-layout:1.1.3'

implementation 'com.android.support:design:28.0.0'

implementation 'com.android.support:support-v4:28.0.0'

testImplementation 'junit:junit:4.12'

androidTestImplementation 'com.android.support.test:runner:1.0.2'

androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

implementation 'com.google.firebase:firebase-database:16.0.1'

implementation 'com.google.firebase:firebase-core:16.0.5'

}

Category fragment class:

public class CategoryFragment extends Fragment {



    //Firebase

    FirebaseDatabase database;

    DatabaseReference categoryBackground;



    //FirebaseUI adapteris

    FirebaseRecyclerOptions<CategoryItem> options;

    FirebaseRecyclerAdapter<CategoryItem, CategoryViewHolder> adapter;

    //view

    RecyclerView recyclerView;





    private static CategoryFragment INSTANCE = null;



    public CategoryFragment() {

        // Required empty public constructor

        database = FirebaseDatabase.getInstance();

        categoryBackground = database.getReference(Common.STR_CATEGORY_BACKGROUND);





        options = new FirebaseRecyclerOptions.Builder<CategoryItem>()

                .setQuery(categoryBackground,CategoryItem.class)

                .build();



        adapter = new FirebaseRecyclerAdapter<CategoryItem, CategoryViewHolder>(options) {

            @Override

            protected void onBindViewHolder(@NonNull final CategoryViewHolder holder, int position, @NonNull final CategoryItem model) {



                Picasso.get()

                        .load(model.getImageLink())

                        .networkPolicy(NetworkPolicy.OFFLINE)

                        .into(holder.background_image, new Callback() {

                            @Override

                            public void onSuccess() {



                            }



                            @Override

                            public void onError(Exception e) {

                                //Bandyti dar karta online jeigu nepavyksta

                                Picasso.get()

                                        .load(model.getImageLink())

                                        .error(R.drawable.ic_error_black_24dp)

                                        .into(holder.background_image, new Callback() {

                                            @Override

                                            public void onSuccess() {



                                            }



                                            @Override

                                            public void onError(Exception e) {

                                                Log.e("ERROR_", "Couldn't fetch image");

                                            }

                                        });

                            }

                        });



                holder.category_name.setText(model.getName());



                holder.setItemClickListener(new ItemClickListener() {

                    @Override

                    public void onClick(View view, int position) {



                    }

                });

            }





            @Override

            public CategoryViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {

                View itemView = LayoutInflater.from(parent.getContext())

                        .inflate(R.layout.layout_category_item, parent, false);

                return new CategoryViewHolder(itemView);

            }

        };

    }





    public static CategoryFragment getInstance()

    {



        if(INSTANCE == null)

            INSTANCE = new CategoryFragment();

        return INSTANCE;

    }



    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);



    }



    @Override

    public View onCreateView(LayoutInflater inflater, ViewGroup container,

                             Bundle savedInstanceState) {

        // Inflate the layout for this fragment

        View view = inflater.inflate(R.layout.fragment_category, container, false);

        recyclerView = (RecyclerView)view.findViewById(R.id.recycler_category);

        recyclerView.setHasFixedSize(true);

        GridLayoutManager gridLayoutManager = new GridLayoutManager(getActivity(),2);

        recyclerView.setLayoutManager((gridLayoutManager));



        setCategory();



        return view;



    }



    private void setCategory() {

        adapter.startListening();

        recyclerView.setAdapter(adapter);

    }



    @Override

    public void onStart() {

        super.onStart();

        if(adapter != null)

            adapter.startListening();

    }



    @Override

    public void onStop() {

        if(adapter != null)

            adapter.stopListening();

        super.onStop();

    }



    @Override

    public void onResume() {

        super.onResume();

        if(adapter != null)

            adapter.startListening();

    }

}

Found a solution, I was sitting hours on this and didn't notice a spelling mistake in a string. Kill me.