Question

我正在使用section recyclerview添加到购物车屏幕。并且想要从类别中的各种项目中一次只选择一个复选框。下面是代码和屏幕图像。请给我解决方案，从产品类别中一次只选择一个复选框。

以下是json回复，

{
 "Status":"Success",
 "StatusCode":"200",
 "Message":"data fetch successfully.",
 "Data":{
  "1":{
     "OptionGroupName":"Base",
     "OptionGroupId":"1",
     "OptionCount":2,
     "Options":[
        {
           "OptionGroupId":"1",
           "OptionGroupName":"Base",
           "ProductId":"54",
           "OptionId":"1",
           "OptionName":"Soft",
           "OptionPrice":"25",
           "IsActive":"1"
        },
        {
           "OptionGroupId":"1",
           "OptionGroupName":"Base",
           "ProductId":"54",
           "OptionId":"2",
           "OptionName":"Hard",
           "OptionPrice":"15",
           "IsActive":"1"
        }
     ]
  },
  "2":{
     "OptionGroupName":"Sauce",
     "OptionGroupId":"2",
     "OptionCount":3,
     "Options":[
        {
           "OptionGroupId":"2",
           "OptionGroupName":"Sauce",
           "ProductId":"54",
           "OptionId":"3",
           "OptionName":"Shezwan",
           "OptionPrice":"10",
           "IsActive":"1"
        },
        {
           "OptionGroupId":"2",
           "OptionGroupName":"Sauce",
           "ProductId":"54",
           "OptionId":"4",
           "OptionName":"Chilly",
           "OptionPrice":"20",
           "IsActive":"1"
        },
        {
           "OptionGroupId":"2",
           "OptionGroupName":"Sauce",
           "ProductId":"54",
           "OptionId":"5",
           "OptionName":"Soya",
           "OptionPrice":"29",
           "IsActive":"1"
        }
     ]
  }
  }
  }

这是java代码;

  public class ProductCartAdapter extends SectionedRecyclerViewAdapter<RecyclerView.ViewHolder> {
    private List<ProductCart> allData;

    public ProductCartAdapter(List<ProductCart> data) {
        this.allData = data;
    }

    @Override
    public int getSectionCount() {
        return allData.size();
    }

    @Override
    public int getItemCount(int section) {
        return allData.get(section).getItemList().size();
    }

    @Override
    public void onBindHeaderViewHolder(RecyclerView.ViewHolder holder, int section) {
        String sectionName = allData.get(section).getName();
        SectionViewHolder sectionViewHolder = (SectionViewHolder) holder;
        sectionViewHolder.tvProductName.setText(sectionName);
    }

    @Override
    public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int section, final int relativePosition, final int absolutePosition) {
        final ItemViewHolder itemViewHolder = (ItemViewHolder) holder;
        itemViewHolder.tvProductName.setText(allData.get(section).getItemList().get(relativePosition).getOptionName());
        itemViewHolder.tvProductPrice.setText("+ $" + allData.get(section).getItemList().get(relativePosition).getOptionPrice());

        **// what I have to code here for selecting only one checkbox (not from addons only from base and sauce)**

        itemViewHolder.cbProduct.setTag(section);
        itemViewHolder.cbProduct.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Integer pos = (Integer) itemViewHolder.cbProduct.getTag();

                if (allData.get(section).getItemList().get(relativePosition).isSelected()) {
                    allData.get(pos).getItemList().get(relativePosition).setSelected(false);
                } else {
                    allData.get(pos).getItemList().get(relativePosition).setSelected(true);
                }
            }
        });
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, boolean header) {
        View v = null;
        if (header) {
            v = LayoutInflater.from(parent.getContext())
                    .inflate(R.layout.list_section_cart, parent, false);
            return new SectionViewHolder(v);
        } else {
            v = LayoutInflater.from(parent.getContext())
                    .inflate(R.layout.list_cart_item, parent, false);
            return new ItemViewHolder(v);
        }

    }

    // SectionViewHolder Class for Sections
    public class SectionViewHolder extends RecyclerView.ViewHolder {
        final TextView tvProductName;

        public SectionViewHolder(View itemView) {
            super(itemView);
            tvProductName = (TextView) itemView.findViewById(R.id.tvProductName);
        }
    }

    // ItemViewHolder Class for Items in each Section
    public class ItemViewHolder extends RecyclerView.ViewHolder {

        final TextView tvProductName, tvProductPrice;
        CheckBox cbProduct;

        public ItemViewHolder(final View itemView) {
            super(itemView);
            tvProductName = (TextView) itemView.findViewById(R.id.tvProductName);
            tvProductPrice = (TextView) itemView.findViewById(R.id.tvProductPrice);
            cbProduct = (CheckBox) itemView.findViewById(R.id.cbProduct);
        }
    }

}

Answer 1

如果您只想检查一个项目，请使用RadioGroup代替或使用recyclerview（在一个内部）。

这样用户就会知道他/她只能从列表中选择一个项目。这将提高用户的理解，同时还会减少循环，以检查是否已检查任何项目。

在recylerview部分只选择一个复选框？

2 个答案: