setVisiblitiy to an ImageView according to SQLite table column value

Question

Im doing an app in Material Design and my goal is to get items form SQLite database and if an item row boolean is_checked is 1, then display this item with an ImageVIew in RecyclerView. I know this explanation is bit off so here is my code:

DbHandler:

 public void deleteProduct(String productname){
        SQLiteDatabase db=getWritableDatabase();
        String[] args = {productname};

        db.delete(TABLE_PRODUCTS, COLUMN_PRODUCTNAME + "= ?", args);
    }

public void changeProduct(Product product){

        ContentValues values= new ContentValues();
        values.put(COLUMN_PRODUCTNAME,product.get_productname());
        values.put(COLUMN_ISCHECKED,product.is_checked());
        SQLiteDatabase db=getWritableDatabase();
        db.insert(TABLE_PRODUCTS,null,values);
        db.close();
    }

My main activity where I communicate with database:

RecyclerView recyclerView;
    CustomAdapter adapter;
    ArrayList<Product> productnames=new ArrayList<>();
    DBHandler dbhandler;
    Toolbar toolbar;



protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        toolbar= (Toolbar) findViewById(R.id.app_bar);
        setSupportActionBar(toolbar);




        recyclerView=(RecyclerView)findViewById(R.id.productList);

        FloatingActionButton fab= (FloatingActionButton) findViewById(R.id.fab);
        fab.attachToRecyclerView(recyclerView);


 dbhandler=new DBHandler(this,null,null,1);
    adapter= new CustomAdapter(this,productnames,this,this);
    getProductsFromDb();
    recyclerView.setAdapter(adapter);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));

And my CustomAdapter :

 private LayoutInflater inflater;
    List<Product> products= Collections.emptyList();
    public DbItemDeleteListener deleteListener;
    public DbItemChangeListener changeListener;


    public CustomAdapter(Context context,List<Product> products,DbItemDeleteListener deleteListener,DbItemChangeListener changeListener){
        inflater=LayoutInflater.from(context);
        this.products=products;
        this.deleteListener = deleteListener;
        this.changeListener = changeListener;

    }



    public void check(int position){
        Product product=products.get(position);
        product.set_checked(true);
    }
    public void uncheck(int position){
        Product product=products.get(position);
        product.set_checked(false);
    }

    public Product getProduct(int position){
        Product product=products.get(position);
        return product;
    }


    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view=inflater.inflate(R.layout.custom_list_row,parent,false);
        MyViewHolder holder=new MyViewHolder(view);



        return holder;
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        Product currentProduct=products.get(position);
        holder.productname.setText(currentProduct.get_productname());
        if(currentProduct.is_checked()) {
            holder.checkIcon.setVisibility(View.VISIBLE);
        }
        else {
            holder.checkIcon.setVisibility(View.GONE);
        }
    }

    @Override
    public int getItemCount() {
        return products.size();
    }

    class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
        TextView productname;
        Button checkButton;
        Button deleteButton;
        ImageView checkIcon;


        public MyViewHolder(View itemView) {
            super(itemView);
            itemView.setOnClickListener(this);

            productname= (TextView) itemView.findViewById(R.id.ProductName);
            checkButton= (Button) itemView.findViewById(R.id.checkButton);
            deleteButton= (Button) itemView.findViewById(R.id.deleteButton);
            checkIcon= (ImageView) itemView.findViewById(R.id.checkIcon);




        }

As you can see I tried to check this field with the code:

 public void onBindViewHolder(MyViewHolder holder, int position) {
        Product currentProduct=products.get(position);
        holder.productname.setText(currentProduct.get_productname());
        if(currentProduct.is_checked()) {
            holder.checkIcon.setVisibility(View.VISIBLE);
        }
        else {
            holder.checkIcon.setVisibility(View.GONE);
        }
    }

But it wont work.

I have checked my database and check and uncheck methods works aka the database column value changes correctly.