java.lang.NumberFormatException：无效整数：“130 PHP”

Question

我不知道如何解决这个问题

我找不到代码中的错误

请帮我解决一下:(谢谢！

 private void loadListFood() {
    cart = new Database(this).getCarts();
    adapter = new CartAdapter(cart,this);
    recyclerView.setAdapter(adapter);

    int total = 0;
    for(Order order:cart)
        total+=(Integer.parseInt(order.getPrice()))*(Integer.parseInt(order.getQuantity()));
    Locale locale = new Locale("en", "US");
    NumberFormat fmt = NumberFormat.getCurrencyInstance(locale);

    txtTotalPrice.setText(fmt.format(total));


}

我被重定向到 总计+=(Integer.parseInt(order.getPrice()))*(Integer.parseInt(order.getQuantity()));

这是我的适配器代码

public class CartAdapter extends RecyclerView.Adapter<CartViewHolder>{
    private List<Order> listData = new ArrayList<>();

    private Context context;

    public CartAdapter(List<Order> cart, Cart cart1)
    {
    }


    @Override
    public CartViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(context);
        View itemView = inflater.inflate(R.layout.cartlayout,parent,false);
        return new CartViewHolder(itemView);
    }

    @Override
    public void onBindViewHolder(CartViewHolder holder, int position) {
        TextDrawable drawable = TextDrawable.builder()
                .buildRound(""+listData.get(position).getQuantity(), Color.RED);
        holder.img_cart_count.setImageDrawable(drawable);


        int price = (Integer.parseInt(listData.get(position).getPrice()))*(Integer.parseInt(listData.get(position).getQuantity()));
        holder.txt_price.setText(price);
        holder.txt_cart_name.setText(listData.get(position).getProductName());


    }

    @Override
    public int getItemCount() {
        return listData.size();
    }
}

Answer 1

来自 JavaDoc：方法 Integer.parseInt(String s) 抛出一个 NumberFormatException

if the string does not contain a parsable integer.

这意味着方法 order.getPrice() 或 order.getQuantity() returns "130 PHP" 不是有效的 Integer.

您真正的问题可能是：为什么方法 returns 是 String 而不是 Integer 因为您现在必须解析 String。很容易出错和不好的做法。

如果您的 GUI 元素（或其他元素）不适合 Integer，至少将您的 "PHP" 从输入字段中删除，您也许能够解析您的 String无需使用一些 String 辅助方法对其进行操作。

Answer 2

class  CartViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener
    , View.OnCreateContextMenuListener {

    public TextView txt_cart_name,txt_price;
    public ImageView img_cart_count;

    private ItemClickListener itemClickListener;

    public void setTxt_cart_name(TextView txt_cart_name) {
        this.txt_cart_name = txt_cart_name;
    }

    public CartViewHolder(View itemView) {
        super(itemView);

        txt_cart_name = (TextView)itemView.findViewById(R.id.cart_item_name);
        txt_price = (TextView)itemView.findViewById(R.id.cart_item_Price);
        img_cart_count = (ImageView)itemView.findViewById(R.id.cart_item_count);

        itemView.setOnCreateContextMenuListener(this);

    }

    @Override
    public void onClick(View view) {

    }

    @Override
    public void onCreateContextMenu(ContextMenu contextMenu, View view, ContextMenu.ContextMenuInfo contextMenuInfo) {

        contextMenu.setHeaderTitle("Selecione uma Ação");
        contextMenu.add(0,0,getAdapterPosition(),Common.DELETE);
    }
}

public class CartAdapter extends RecyclerView.Adapter<CartViewHolder> {

    private List<Order> listData = new ArrayList<>();
    private Context context;

    public CartAdapter(List<Order> listData, Context context) {
        this.listData = listData;
        this.context = context;
    }

    @Override
    public CartViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(context);
        View itemView = inflater.inflate(R.layout.cart_layout,parent,false);
        return new CartViewHolder(itemView);
    }

    @Override
    public void onBindViewHolder(CartViewHolder holder, int position) {
        TextDrawable drawable = TextDrawable.builder()
                .buildRound(""+listData.get(position).getQuantity(), Color.BLUE);
        holder.img_cart_count.setImageDrawable(drawable);

        Locale locale = new Locale("pt","BR");
        NumberFormat fmt = NumberFormat.getCurrencyInstance(locale);
        int price = (Integer.parseInt(listData.get(position).getPrice()))*(Integer.parseInt(listData.get(position).getQuantity()));
        holder.txt_price.setText(fmt.format(price));

        holder.txt_cart_name.setText(listData.get(position).getProductName());


    }


    @Override
    public int getItemCount() {
        return listData.size();
    }
}

java.lang.NumberFormatException：无效整数：“130 PHP”

java.lang.NumberFormatException: Invalid int: "130 PHP"

invalid-characters