Refresh Fragment view when RecyclerView.Adapter is changed

Certainly! Here's the HTML code for the provided information: ```html

In Java/Kotlin, you pass by value, not by reference. When passing the list to the StaggeredProductCardRecyclerViewAdapter( theList ), you should update the list from the Adapter, not the one you passed. Here's an example:

class StaggeredProductCardRecyclerViewAdapter(private val theList: List) {

    private var listOfItems = theList

    fun removeItem(position: Int) {
        listOfItems = listOfItems.remove(position)
        notifyDatasetChanged()
    }
}

val featured = view.findViewById(R.id.featured) as Button
// set on-click listener
featured.setOnClickListener {
       adapter.removeItem(1)
}

---

EDIT:

You're operating on an immutable list inside the StaggeredProductCardRecyclerViewAdapter. To filter items on the list based on "featured," for example, do this:

class StaggeredProductCardRecyclerViewAdapter(private val initList: List<ProductEntry>?) : RecyclerView.Adapter<StaggeredProductCardViewHolder>() {

    private var productList: List<ProductEntry>? = initList

    override fun getItemViewType(position: Int): Int {
        return position % 3
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): StaggeredProductCardViewHolder {
        var layoutId = R.layout.shr_staggered_product_card_first
        if (viewType == 1) {
            layoutId = R.layout.shr_staggered_product_card_second
        } else if (viewType == 2) {
            layoutId = R.layout.shr_staggered_product_card_third
        }

        val layoutView = LayoutInflater.from(parent.context).inflate(layoutId, parent, false)
        return StaggeredProductCardViewHolder(layoutView)
    }

    override fun onBindViewHolder(holder: StaggeredProductCardViewHolder, position: Int) {
        if (productList != null && position < productList.size) {
            val product = productList[position]
            holder.productTitle.text = product.title
            holder.productPrice.text = product.price
            ImageRequester.setImageFromUrl(holder.productImage, product.url)
        }
    }

    override fun getItemCount(): Int {
        return productList?.size ?: 0
    }

    fun replaceList(items: List<ProductEntry>?) {
        productList = items
        notifyDatasetChanged()
    }
}

And in ProductGridFragment:

featured.setOnClickListener {
       adapter.replaceList(ProductEntry.initProductEntryList(resources, "featured"))
}

---

Another approach: Refreshing Fragment's onCreateView method

supportFragmentManager.beginTransaction().detach(yourFragment).commitNow()
supportFragmentManager.beginTransaction().attach(yourFragment).commitNow()

This will rerender the whole view. Use childFragmentManager for different cases.

The most efficient solution when adapter data changes is to use notifyDatasetChanged().

---

Simple Way to Refresh RecyclerView in Fragment

viewpager.setAdapter(myViewPagerAdapter);

This will call the onResume() method of the fragment.

```