Dfyjkt

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.