I am fetching a list of products from an api using retrofit and displaying it in an activity using recycler view. Now when I click on a specific item it should open its details page where there are more details about the product. It’s working fine for first 15 items but after that I get this error in my logcat and in the app it just throws me to the first screen which contains a button(view products).

Here is the code of activity containing recycler view:

@AndroidEntryPoint
class ProductListActivity: AppCompatActivity() {
    private lateinit var binding: ProductlistRecyclerviewBinding
    private val productViewModel: ProductListActivityViewModel by viewModels()
    private lateinit var productAdapter: ProductAdapter
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ProductlistRecyclerviewBinding.inflate(layoutInflater)
        setContentView(binding.root)

        initRecyclerView()
        getProductsFromInternet()
        productViewModel.productList.observe(this){
            it.let {
                productAdapter.updateProducts(it)
            }
        }

        productViewModel.isLoading.observe(this) {
            binding.progressCircular.isVisible = it
        }

    }

    private fun getProductsFromInternet() {
        productViewModel.getProducts()
    }

    private fun initRecyclerView() {
        productAdapter = ProductAdapter(arrayListOf())
        binding.recyclerView.layoutManager = LinearLayoutManager(this)
        binding.recyclerView.adapter = productAdapter
    }
}

Here is it’s viewModel:

@HiltViewModel
class ProductListActivityViewModel @Inject constructor(
    private val getProductUseCase: GetProductUseCase
): ViewModel() {
    val productList = MutableLiveData<ArrayList<Product>>()
    val isLoading = MutableLiveData<Boolean>()

    fun getProducts(){
        isLoading.postValue(true)
        viewModelScope.launch {
            val products = getProductUseCase.invoke()
            Log.d("ProductListActivity", "Fetched products: $products")
            if (products != null){
                productList.postValue(products)
                isLoading.postValue(false)
            }
        }
    }
}

Here is its adapter:

class ProductAdapter(private val productList: ArrayList<Product>): RecyclerView.Adapter<ProductViewHolder>() {
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ProductViewHolder {
        val layoutInflater = LayoutInflater.from(parent.context)
        return ProductViewHolder(layoutInflater.inflate(R.layout.productlist_item,parent,false))
    }

    override fun getItemCount(): Int {
        return productList.size
    }

    override fun onBindViewHolder(holder: ProductViewHolder, position: Int) {
        val currentProduct = productList[position]
        holder.render(currentProduct, holder.itemView.context)
        holder.itemView.setOnClickListener {
            goToProduct(
                currentProduct, holder.itemView.context
            )
        }
    }

    private fun goToProduct(product: Product, context: Context) {
        val intent = Intent(context, ProductDetailsActivity::class.java)
        intent.putExtra("product",product)
        context.startActivity(intent)
    }
    fun updateProducts(newProducts: ArrayList<Product>) {
        productList.clear()
        productList.addAll(newProducts)
        notifyDataSetChanged()
    }

}

and it’s viewHolder:

class ProductViewHolder(view: View): RecyclerView.ViewHolder(view) {
    private val binding = ProductlistItemBinding.bind(view)

    fun render(product: Product, context: Context) {
        Glide.with(context).load(product.thumbnail).into(binding.imageView)
        binding.idTextView.text = "Product ${product.id}"
        binding.titleTextView.text = "${product.title}"
    }

}

This is the code of details screen where I am receiving the particular product:

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityProductDetailsBinding.inflate(layoutInflater)
        setContentView(binding.root)
        val product = intent.getParcelableExtra<Product>("product")