我有一个expandableListView解析JSON数据。但问题是每次我得到相同的组名，每个组都有相同的孩子。
我的JSON数据是
[
{
"PrvCusID": "10000000",
"CusCategory": null,
"Title": null,
"CusName": "Rakib Hossain",
"Address": null,
"City": null,
"Phone": null,
"Email": null,
"DOB": "0001-01-01T00:00:00",
"Active": null,
"ClubName": null,
"CardNo": "123",
"PinNo": null,
"BalanceAmount": 0,
"Picture": null,
"tempSales": [
{
"TempID": 2014,
"CounterId": "",
"UserId": "raj",
"PrvCusID": "10000000",
"Item_id": "26",
"OptionsID": "",
"AddonsID": "",
"OptionsGroupName": "",
"ItemName": "popcorn",
"AddonsName": "",
"OptionsName": "",
"RPU": 75,
"VAT": 0,
"QTY": 1,
"CPU": 0,
"GuestNo": 0,
"TblNo": "Pool table 1",
"IsHappyHourPrice": "N",
"IsPrinted": "N",
"ShopID": "S01",
"CustomerName": "Rakib Hossain",
"ItemSL": 1,
"OrderNo": "S012015070100001",
"Area": "null",
"RPU_Text": "75",
"QTY_Text": "1",
"Instruction": "",
"InstructionIDs": "",
"IsInvoicePrint": null,
"CardNo": null
},
{
"TempID": 2013,
"CounterId": "",
"UserId": "raj",
"PrvCusID": "10000000",
"Item_id": "27",
"OptionsID": "",
"AddonsID": "",
"OptionsGroupName": "",
"ItemName": "chips",
"AddonsName": "",
"OptionsName": "",
"RPU": 50,
"VAT": 0,
"QTY": 1,
"CPU": 0,
"GuestNo": 0,
"TblNo": "Pool table 1",
"IsHappyHourPrice": "N",
"IsPrinted": "N",
"ShopID": "S01",
"CustomerName": "Rakib Hossain",
"ItemSL": 1,
"OrderNo": "S012015070100001",
"Area": "null",
"RPU_Text": "50",
"QTY_Text": "1",
"Instruction": "",
"InstructionIDs": "",
"IsInvoicePrint": null,
"CardNo": null
}
]
},
{
"PrvCusID": "10000001",
"CusCategory": null,
"Title": null,
"CusName": "Sehav",
"Address": null,
"City": null,
"Phone": null,
"Email": null,
"DOB": "0001-01-01T00:00:00",
"Active": null,
"ClubName": null,
"CardNo": "456",
"PinNo": null,
"BalanceAmount": 0,
"Picture": null,
"tempSales": [
{
"TempID": 2016,
"CounterId": "",
"UserId": "raj",
"PrvCusID": "10000001",
"Item_id": "23",
"OptionsID": "",
"AddonsID": "",
"OptionsGroupName": "",
"ItemName": "patat met",
"AddonsName": "",
"OptionsName": "",
"RPU": 175,
"VAT": 0,
"QTY": 1,
"CPU": 0,
"GuestNo": 0,
"TblNo": "Pool table 1",
"IsHappyHourPrice": "N",
"IsPrinted": "N",
"ShopID": "S01",
"CustomerName": "Sehav",
"ItemSL": 1,
"OrderNo": "S012015070100001",
"Area": "null",
"RPU_Text": "175",
"QTY_Text": "1",
"Instruction": "",
"InstructionIDs": "",
"IsInvoicePrint": null,
"CardNo": null
},
{
"TempID": 2015,
"CounterId": "",
"UserId": "raj",
"PrvCusID": "10000001",
"Item_id": "28",
"OptionsID": "",
"AddonsID": "",
"OptionsGroupName": "",
"ItemName": "peanuts",
"AddonsName": "",
"OptionsName": "",
"RPU": 125,
"VAT": 0,
"QTY": 1,
"CPU": 0,
"GuestNo": 0,
"TblNo": "Pool table 1",
"IsHappyHourPrice": "N",
"IsPrinted": "N",
"ShopID": "S01",
"CustomerName": "Sehav",
"ItemSL": 1,
"OrderNo": "S012015070100001",
"Area": "null",
"RPU_Text": "125",
"QTY_Text": "1",
"Instruction": "",
"InstructionIDs": "",
"IsInvoicePrint": null,
"CardNo": null
}
]
}
]
这里CusName是组名，数组“tempSales”中的元素是child 我的代码在下面
StringRequest stringRequest=new StringRequest(Method.GET, baseUrl+"/dc/Api/Sales/GetOrderPreviewByCustomers?orderNo="+orderno,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
ArrayList<Group> group_list = new ArrayList<Group>();
ArrayList<Child> ch_list;
try {
Group gru = new Group();
ch_list = new ArrayList<Child>();
jsonArray = new JSONArray(response);
for (int i = 0; i < jsonArray.length(); i++) {
String customerName = jsonArray.getJSONObject(i)
.getString("CusName");
JSONArray childArray=jsonArray.getJSONObject(i).getJSONArray("tempSales");
Child ch = new Child();
for (int j = 0; j < childArray.length(); j++) {
String itemName=childArray.getJSONObject(j).getString("ItemName");
String itemQuantity=childArray.getJSONObject(j).getString("QTY_Text");
String unitPrice=childArray.getJSONObject(j).getString("RPU_Text");
ch.setName(itemName);
ch.setQuantity(itemQuantity);
ch.setUnitPrice(unitPrice);
ch_list.add(ch);
}
gru.setName(customerName);
gru.setItems(ch_list);
group_list.add(gru);
}
ExpAdapter = new ExpandListAdapter(
getApplicationContext(), group_list);
ExpandList.setAdapter(ExpAdapter);
PD.dismiss();
} catch (JSONException e) {
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError arg0) {
PD.dismiss();
}
});
AppController.getInstance().addToRequestQueue(stringRequest);
我怎么能解决这个问题？提前谢谢。
答案 0 :(得分：0)
移动
Child ch = new Child();
在循环中。
for (int j = 0; j < childArray.length(); j++) {
您要多次将同一个对象添加到列表中
答案 1 :(得分：0)
在childArray循环中创建child的新对象
StringRequest stringRequest=new StringRequest(Method.GET, baseUrl+"/dc/Api/Sales/GetOrderPreviewByCustomers?orderNo="+orderno,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
ArrayList<Group> group_list = new ArrayList<Group>();
ArrayList<Child> ch_list;
try {
jsonArray = new JSONArray(response);
for (int i = 0; i < jsonArray.length(); i++) {
Group gru = new Group();
ch_list = new ArrayList<Child>();
String customerName = jsonArray.getJSONObject(i)
.getString("CusName");
JSONArray childArray=jsonArray.getJSONObject(i).getJSONArray("tempSales");
for (int j = 0; j < childArray.length(); j++) {
Child ch = new Child();
String itemName=childArray.getJSONObject(j).getString("ItemName");
String itemQuantity=childArray.getJSONObject(j).getString("QTY_Text");
String unitPrice=childArray.getJSONObject(j).getString("RPU_Text");
ch.setName(itemName);
ch.setQuantity(itemQuantity);
ch.setUnitPrice(unitPrice);
ch_list.add(ch);
}
gru.setName(customerName);
gru.setItems(ch_list);
group_list.add(gru);
}
ExpAdapter = new ExpandListAdapter(
getApplicationContext(), group_list);
ExpandList.setAdapter(ExpAdapter);
PD.dismiss();
} catch (JSONException e) {
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError arg0) {
PD.dismiss();
}
});
答案 2 :(得分：0)
StringRequest stringRequest=new StringRequest(Method.GET, baseUrl+"/dc/Api/Sales/GetOrderPreviewByCustomers?orderNo="+orderno,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
ArrayList<Group> group_list = new ArrayList<Group>();
ArrayList<Child> ch_list;
try {
// Group gru = new Group();
ch_list = new ArrayList<Child>();
jsonArray = new JSONArray(response);
for (int i = 0; i < jsonArray.length(); i++) {
// create in inside the loop
Group gru = new Group();
String customerName = jsonArray.getJSONObject(i)
.getString("CusName");
JSONArray childArray=jsonArray.getJSONObject(i).getJSONArray("tempSales");
// Child ch = new Child();
for (int j = 0; j < childArray.length(); j++) {
// create in inside the loop
Child ch = new Child()
String itemName=childArray.getJSONObject(j).getString("ItemName");
String itemQuantity=childArray.getJSONObject(j).getString("QTY_Text");
String unitPrice=childArray.getJSONObject(j).getString("RPU_Text");
ch.setName(itemName);
ch.setQuantity(itemQuantity);
ch.setUnitPrice(unitPrice);
ch_list.add(ch);
}
gru.setName(customerName);
gru.setItems(ch_list);
group_list.add(gru);
}
ExpAdapter = new ExpandListAdapter(
getApplicationContext(), group_list);
ExpandList.setAdapter(ExpAdapter);
PD.dismiss();
} catch (JSONException e) {
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError arg0) {
PD.dismiss();
}
});
AppController.getInstance().addToRequestQueue(stringRequest);