Question

我想显示来自服务器的数据。我的结果数据显示为[get（0）; index（0），价格：3800]。我想用android中的listview显示所有数据。我使用BaseAdapter，CustomAdapter。这里预订对象api。

[
  {
    "order_id": 13,
    "booking_person": 2,
    "booking_datetime": "2016-07-01 22:30:00",
    "total_amount": 2100,
    "order_details": [
      {
        "id": 20,
        "order_id": 13,
        "qty": 1,
        "price": 3800,
        "sub_total": 3800,
      },
      {
        "id": 21,
        "order_id": 13,
        "qty": 1,
        "price": 3250,
        "sub_total": 3250,,
      },
      {
        "id": 124,
        "order_id": 13,
        "qty": 1,
        "price": 2100,
        "sub_total": 2100,            
      }
    ]
  },
]

BookingActivity.java

Bundle bundle = getIntent().getExtras();
Booking booking = new Gson().fromJson(bundle.getString("Booking"), Booking.class);
List<Booking> bookingList = new ArrayList<Booking>();
bookingList.add(booking);
BookingDetailAdapter adapter = new BookingDetailAdapter(BookingActivity.this, bookingList);
lv.setAdapter(adapter);

BookingDetailAdapter.clsas

@Override
    public View getView(int position, View convertView, ViewGroup parent){
Booking booking = list.get(position);
        for (int i = 0; i < list.size(); i++) {
            holder.textView.setText(list.get(i).getOrderDetail().get(0).getPrice().toString());
        }
        return rowView;
}

Answer 1

您的适配器填充您拥有的父Booking对象。但是，如果将order_detail列表传递给适配器，则可以看到3行。

BookingDetailAdapter adapter = new BookingDetailAdapter(BookingActivity.this, bookingList.get(0).getOrderDetail());

你不应该在列表中循环。将为列表中的每个项触发getView方法。

OrderDetail detail = list.get(position);
holder.textView.setText(detail.get(position).getPrice().toString());       
return rowView;

Answer 2

首先，你应该使用Gson在一个对象中解析结果，然后将结果列表传递给ListAdapter，然后在getView中传递：

@Override
public View getView(int position, View convertView, ViewGroup parent){

Booking booking = list.get(position);
    holder.textView.setText(list.get(position).getOrderDetail().get(0).getPrice().toString());

    return rowView;
}

如何在android中使用ListView显示数据？

2 个答案: