wrong section TAG value

问题

I'm try to remove some rows from section one and some from section two, but

sectionAdapter.notifyItemRemovedFromSection(TAG, key);

TAG always return the 2st section list string TAG, but I was selected row in first list

here is full class code:

class ContactsSection extends StatelessSection {

    final String TAG;
    String title;
    List<Item> list;
    ItemViewHolder row;
    HeaderViewHolder MainRow;

    ContactsSection(String title, ArrayList<Item> list) {
        super(R.layout.shopping_row_item_header, R.layout.shopping_row_item);
        this.title = title;
        this.list = list;
        this.TAG = title;
    }

    @Override
    public int getContentItemsTotal() {
        return list.size();
    }

    @Override
    public RecyclerView.ViewHolder getItemViewHolder(View view) {
        return new ItemViewHolder(view);
    }

    @Override
    public void onBindItemViewHolder(final RecyclerView.ViewHolder holder, final int position) {

        final ItemViewHolder itemHolder = (ItemViewHolder) holder;
        final Item name = list.get(position);
        itemHolder.tvItem.setText(name.name);
        ((ItemViewHolder) holder).IntegBOX.setChecked(name.checked);
        ((ItemViewHolder) holder).IntegBOX.setTag(position);


        deleteAll.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View arg0) {

                Iterator it = selectedCheckBox.entrySet().iterator();
                if (!it.hasNext()) {

                    new makeDialog().makeDialog(mActivity, mActivity.getResources().getString(R.string.share_no_data));

                } else {


                    while (it.hasNext()) {
                        Map.Entry pair = (Map.Entry) it.next();
                        int key = (Integer) pair.getKey();
                        if ((Boolean) pair.getValue()) {
                            list.remove(key);

     // problem Here 
                            sectionAdapter.notifyItemRemovedFromSection(TAG, key);               

 }


                    }

                    chooseAllradioButton.setSelected(false);
                }
            }
        });


        itemHolder.IntegBOX.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                //Set the button's appearance
                ((CheckBox) v).setChecked(!((CheckBox) v).isChecked());

                // if button Already in checked statue
                if (((CheckBox) v).isChecked()) {

                    Iterator it = selectedCheckBox.entrySet().iterator();
                    while (it.hasNext()) {
                        Map.Entry pair = (Map.Entry) it.next();
                        int key = (Integer) pair.getKey();
                        if (key == (Integer) v.getTag()) {
                            it.remove();
                        }
                        // set it as false
                        ((CheckBox) v).setChecked(false);
                    }
                } else {
                    // Otherwise set it to true and add it to hashMap
                    ((CheckBox) v).setChecked(true);
                    selectedCheckBox.put((Integer) v.getTag(), true);
                }


                Toast.makeText(mActivity, String.format("Clicked on position #%s of Section %s", sectionAdapter.getPositionInSection(itemHolder.getAdapterPosition()), title), Toast.LENGTH_SHORT).show();
            }
        });
    }

    @Override
    public RecyclerView.ViewHolder getHeaderViewHolder(View view) {
        return new HeaderViewHolder(view);
    }

    @Override
    public void onBindHeaderViewHolder(RecyclerView.ViewHolder holder) {
        HeaderViewHolder headerHolder = (HeaderViewHolder) holder;
        headerHolder.tvTitle.setText(title);
    }

    // Remove All Btn Fuc





    class HeaderViewHolder extends RecyclerView.ViewHolder {

        private final TextView tvTitle;

        HeaderViewHolder(View view) {
            super(view);
            tvTitle = (TextView) view.findViewById(R.id.DishName);
        }
    }

    class ItemViewHolder extends RecyclerView.ViewHolder implements CompoundButton.OnCheckedChangeListener {

        private final View rootView;
        private final TextView tvItem;
        private final CheckBox IntegBOX;

        ItemViewHolder(View view) {
            super(view);

            rootView = view;
            tvItem = (TextView) view.findViewById(R.id.DishName);
            IntegBOX = (CheckBox) view.findViewById(R.id.chooseDish);
            IntegBOX.setOnCheckedChangeListener(this);
        }

        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            //   int position = getAdapterPosition();
            //   list.get(position).checked = isChecked;
        }
    }


}


private class Item {
    String name;
    boolean checked;

    Item(String name) {
        this.name = name;
        checked = false;
    }
}

add sections code :

     for (int d = 0; d < DishesIngredientsShoppingList.size(); d++) {
        contacts = new ArrayList<>();
        for (int i = 0; i < DishesIngredientsShoppingList.get(d).getGroups().length; i++) {
            for (int g = 0; g < DishesIngredientsShoppingList.get(d).getGroups()[i].getIngredients().length; g++) {
                if (Language)
                    contacts.add(new Item(DishesIngredientsShoppingList.get(d).getGroups()[i].getIngredients()[g].getName()));
                else
                    contacts.add(new Item(DishesIngredientsShoppingList.get(d).getGroups()[i].getIngredients()[g].getNameEnglish()));


            }
        }

     sectionAdapter = new SectionedRecyclerViewAdapter();
    ArrayList<Item> contacts = new ArrayList<>();
    // ArrayList<String> dishNames = new ArrayList<>();
    mRecyclerView.setLayoutManager(new LinearLayoutManager(mActivity));
             if (Language)
            sectionAdapter.addSection(DishesIngredientsShoppingList.get(d).getName(), new ContactsSection(DishesIngredientsShoppingList.get(d).getName(),contacts));
        else
            sectionAdapter.addSection(DishesIngredientsShoppingList.get(d).getEnglishName(), new ContactsSection(DishesIngredientsShoppingList.get(d).getEnglishName(),contacts));


    }
    mRecyclerView.setAdapter(sectionAdapter);

note : i have delete button is setup at action bar not in every row so when the code runs the code can not detect current row section tag

回答1:

You are storing all the selected checkboxes from all sections in this selectedCheckBox map, but when the deleteAll button is tapped you call notifyItemRemovedFromSection from the section where it is in.

You will have to change your selectedCheckBox map to also store which section 'tag' that checkbox belongs to, then when you call notifyItemRemovedFromSection you can pass the correct 'tag'.

来源：https://stackoverflow.com/questions/43726876/wrong-section-tag-value