java - Recyclerview显示具体数据

Question

我有两种类型的用户。第一个用户可以在回收器 View 中看到所有数据。第二个用户只能在回收者 View 中看到特定数据。

现在只能显示具体的数据，第二个用户点击后，就会显示第一个数据，而不是按照位置显示。

如何修复用户在右侧显示上的点击并将继续处理正确的数据？

MainActivity.java。准备根据情况显示回收者 View 。

private void prepareMainMenu(final String type) {
        MainItem mainItem;
        switch (type) {
            case "Customer":
                mainItem = new MainItem("Customer", imageViewMain[1]);
                mainItemList.add(mainItem);
                break;
            case "Packages":
                mainItem = new MainItem("Packages", imageViewMain[2]);
                mainItemList.add(mainItem);
                break;
            case "Live Chat":
                mainItem = new MainItem("Live Chat", imageViewMain[3]);
                mainItemList.add(mainItem);

                break;
            case "Transaction":
                mainItem = new MainItem("Transaction", imageViewMain[5]);
                mainItemList.add(mainItem);

                break;
            case "Profit Report":
                mainItem = new MainItem("Profit Report", imageViewMain[4]);
                mainItemList.add(mainItem);

                break;
            case "Owner":
                mainItem = new MainItem("Admin", imageViewMain[0]);
                mainItemList.add(mainItem);

                mainItem = new MainItem("Customer", imageViewMain[1]);
                mainItemList.add(mainItem);

                mainItem = new MainItem("Packages", imageViewMain[2]);
                mainItemList.add(mainItem);

                mainItem = new MainItem("Live Chat", imageViewMain[3]);
                mainItemList.add(mainItem);

                mainItem = new MainItem("Profit Report", imageViewMain[4]);
                mainItemList.add(mainItem);

                mainItem = new MainItem("Transaction", imageViewMain[5]);
                mainItemList.add(mainItem);
                break;

        }
        //Display
        mainViewAdapter.notifyDataSetChanged();
    }

MainViewAdapter.java(用户将单击的位置)

 @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, final int position) {
        MainItem mainItem = mainItemList.get(position);
        holder.getTextViewTitle().setText(mainItem.getNameMain());

        Glide.with(context)
                .load(mainItem.getImageMain())
                .into(holder.imageViewMain);

        holder.getView().setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //Check the position
                switch (position) {
                    case 0:
                        context.startActivity(new Intent(context, AdminActivity.class));
                        break;
                    case 1:
                        context.startActivity(new Intent(context, CustomerActivity.class));
                        break;
                    case 2:
                        context.startActivity(new Intent(context, PackagesSelectorActivity.class));
                        break;
                    case 3:
                        context.startActivity(new Intent(context, LiveChatActivity.class));
                        break;
                    case 4:
                        context.startActivity(new Intent(context, ProfitReportActivity.class));
                        break;
                    case 5:
                        context.startActivity(new Intent(context, TransactionActivity.class));
                        break;
                }

            }
        });
    }

更新:这就是方法prepareMainMenu 的用途。

 private void retrieveData() {
        if (firebaseUser != null) {
            databaseReference.child("admin").child(firebaseUser.getUid()).addListenerForSingleValueEvent(new ValueEventListener() {
                @Override
                public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                    if (dataSnapshot.exists()) {
                        Admin admin = dataSnapshot.getValue(Admin.class);
                        if (admin != null) {
                            fullName = admin.getFullName();
                            email = admin.getEmail();
                            type = admin.getType();

                            //Then display
                            textViewFullName.setText(fullName);
                            textViewEmail.setText(email);
                            textViewType.setText(type);
                            //Check the type of admin
                            switch (type) {
                                case "Customer":
                                    prepareMainMenu("Customer");
                                    break;
                                case "Packages":
                                    prepareMainMenu("Packages");
                                    break;
                                case "Live Chat":
                                    prepareMainMenu("Live Chat");
                                    break;
                                case "Transaction":
                                    prepareMainMenu("Transaction");
                                    break;
                                case "Profit Report":
                                    prepareMainMenu("Profit Report");
                                    break;
                                case "Owner":
                                    prepareMainMenu("Owner");
                                    break;
                            }
                        }
                    }
                }

                @Override
                public void onCancelled(@NonNull DatabaseError databaseError) {

                }
            });
        }
    }

Answer 1

不要使用 onBindViewHolder 中的 position，而是使用 mainItem 名称来区分点击事件。

holder.getView().setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
    switch (mainItem.getNameMain().toLowerCase()) {
        case "admin":
            context.startActivity(new Intent(context, AdminActivity.class));
            break;
        case "customer":
            context.startActivity(new Intent(context, CustomerActivity.class));
            break;
        case "packages":
            context.startActivity(new Intent(context, PackagesSelectorActivity.class));
            break;
        case "live chat":
            context.startActivity(new Intent(context, LiveChatActivity.class));
            break;
        case "profit report":
            context.startActivity(new Intent(context, ProfitReportActivity.class));
            break;
        case "transaction":
            context.startActivity(new Intent(context, TransactionActivity.class));
            break;
    }

}
});

此外，我使用了小写字符串比较，这将降低字符串匹配的风险。