java - 从 Adapter 中刷新整个 RecyclerView

Question

我尝试从 Adapter 类(onBindViewHolder 方法)刷新整个 RecyclerView。如果我点击列表中的一个项目，我希望这个项目的参数会改变。这样做的最佳方法是什么？

Adapter 类中的

onBindViewHolder 方法:

@Override
public void onBindViewHolder(@NonNull final StoreRecyclerViewAdapter.ViewHolder holder, final int position) {

    // Get the image of the Player item
    Glide.with(context)
            .asBitmap()
            .load(allPlayers.get(position))
            .into(holder.playerInStore);

    // Get the price of the Player of the item
    holder.playerPrice.setText(allPrices.get(position).toString());

    // Get the status of the Player of the item
    holder.status = allStatus.get(position);

    // If Player status is "CLOSED", get the closed lock image of the item
    if (allStatus.get(position).equals("CLOSE")) {
        Glide.with(context)
                .asBitmap()
                .load(close.getStatusPic())
                .into(holder.playerLock);

        // The user can purchase the item
        holder.layoutStore.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                int price = Integer.valueOf(holder.playerPrice.getText().toString());
                boolean canPurchase = StoreLogic.getStoreLogic().canPurchase(price);

                if (canPurchase) {

                    String purchaseSuccessfully = "purchase succcessfully :)";
                    Toast.makeText(context, purchaseSuccessfully, Toast.LENGTH_SHORT).show();

                    // update list details
                    //****************** REFRESH LIST *******************



                }
                else {
                    String purchaseFailed = "not enough coins :(";

                    Toast.makeText(context, purchaseFailed, Toast.LENGTH_SHORT).show();

                }
            }
        });
    }

    // If Player status is "OPEN", get the open lock image of the item
    else {
        Glide.with(context)
                .asBitmap()
                .load(open.getStatusPic())
                .into(holder.playerLock);

        // The user cannot purchase the item
        holder.layoutStore.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(context, "already available", Toast.LENGTH_SHORT).show();

            }
        });
    }
}

RecyclerView 类中的

initRecyclerView 方法:

protected void initRecyclerViewForAllPlayers() {
    RecyclerView recyclerView = findViewById(R.id.rv_store);
    StoreRecyclerViewAdapter adapter = new StoreRecyclerViewAdapter(this, allPlayers, allPrices, allStatus, open, close);
    recyclerView.setAdapter(adapter);
    recyclerView.setLayoutManager(new LinearLayoutManager((this)));

}

---

找到解决方案

不幸的是，评论中的解决方案都没有帮助，方法 notifyDataSetChanged() 、 notifyItemChanged(position) 没有刷新数据。

也许它会在将来帮助某人:为了刷新整个列表，我访问了 Activity (Store) 中的 init 方法 (initImageBitmapsForAllPlayers)，并从 onBindViewHolder 调用它在适配器中:

if (context instanceof Store) {
    notifyItemChanged(position);
    ((Store) context).initImageBitmapsForAllPlayers();
}

Answer 1

调用以下方法刷新内部适配器:

notifyDataSetChanged()

内部 Activity

if (recyclerView.getAdapter() != null) {
     recyclerView.getAdapter().notifyDataSetChanged();
}