向下滚动listview我收到IndexOutOfBound例外。
让我解释一下情景： -
首先，列表由我从服务器获取的数据填充。 - 没有错误
第二，当我 PULL TO REFRESH 获取数据时，同时当我滚动时，我得到IndexOutofBound Exception。 我陷入了这种情况。
请帮忙。
这是我的代码： -
NewOrders.java
公共类NewOrders扩展了Fragment工具 SwipeRefreshLayout.OnRefreshListener {
private ListView listView;
private SwipeRefreshLayout swipeRefreshLayout;
NewOrderListviewAdapter adp;
public static String allResId = "", boy_id = "";
String passedArg = "";
DialogView dialogView;
private Boolean isRefreshing = false;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_neworders,
container, false);
dialogView = new DialogView();
listView = (ListView) rootView.findViewById(R.id.list);
swipeRefreshLayout = (SwipeRefreshLayout) rootView
.findViewById(R.id.swipe_refresh_layout);
new getNewOrders().execute();
swipeRefreshLayout.setOnRefreshListener(this);
return rootView;
}
public class getNewOrders extends AsyncTask<Void, String, String> {
String strMessage;
@Override
protected void onPreExecute() {
// if (!PendingOrderListDataStorage.NEW_ORDER.isEmpty())
// PendingOrderListDataStorage.NEW_ORDER.clear();
// showing refresh animation before making http call
swipeRefreshLayout.setRefreshing(true);
}
@Override
protected String doInBackground(Void... params) {
HttpClient httpClient = SessionControl.getHttpclient();
String url = ServiceAPIs.PENDING_ORDER_LIST;
HttpPost httppost = new HttpPost(url);
try {
List<NameValuePair> valuepair = new ArrayList<NameValuePair>();
String resIds = "";
for (int i = 0; i < PendingOrderListDataStorage.RESTAURANT_LIST
.size(); i++) {
resIds = resIds
+ ","
+ PendingOrderListDataStorage.RESTAURANT_LIST
.get(i).restaurant_id;
}
resIds = resIds.substring(1);
valuepair.add(new BasicNameValuePair("res_id", resIds));
Log.d("RID", allResId);
valuepair.add(new BasicNameValuePair("boy_id", passedArg));
Log.d("BID", passedArg);
httppost.setEntity(new UrlEncodedFormEntity(valuepair));
HttpResponse httpResponse = httpClient.execute(httppost);
StatusLine statusLine = httpResponse.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) {
HttpEntity httpEntity = httpResponse.getEntity();
if (httpEntity != null) {
InputStream instream = httpEntity.getContent();
strMessage = Converter.inputStreamToString(instream)
.toString();
}
} else {
return null;
}
} catch (ClientProtocolException e) {
e.printStackTrace();
return null;
} catch (IOException e) {
e.printStackTrace();
return null;
} finally {
httpClient.getConnectionManager().closeExpiredConnections();
}
return strMessage;
}
@Override
protected void onProgressUpdate(String... progress) {
super.onProgressUpdate(progress);
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
// stopping swipe refresh
swipeRefreshLayout.setRefreshing(false);
isRefreshing = false;
Log.d("BID from Rending for Delivery", passedArg);
if (result != null) {
Log.v("Result", result);
try {
JSONObject jsonObj = new JSONObject(result);
String status = jsonObj.getString("status");
if (status.equals("0")) {
System.out.print("No Pending Orders");
} else {
JSONArray array = jsonObj.getJSONArray("data");
if (array.length() > 0) {
for (int i = 0; i < array.length(); i++) {
JSONObject obj = array.getJSONObject(i);
if (obj.getString("delivery_boy_status")
.equals("P")) {
String deliveryDate = "";
if (obj.getString("deliverydate").contains(
"/")) {
deliveryDate = convertDate(obj
.getString("deliverydate"));
}
else {
deliveryDate = obj
.getString("deliverydate");
}
NewOrderListObjectItem ObjectItemData = new NewOrderListObjectItem(
obj.getString("restaurant_name"),
obj.getString("status"),
obj.getString("delivery_boy_status"),
obj.getString("app_order_status"),
obj.getString("orderid"),
obj.getString("ordergenerateid"),
obj.getString("customer_id"),
obj.getString("usertype"),
obj.getString("customername"),
obj.getString("customerlastname"),
obj.getString("customeremail"),
obj.getString("customercellphone"),
obj.getString("customerlandline"),
obj.getString("deliverydoornumber"),
obj.getString("deliverystreet"),
obj.getString("deliverylandmark"),
obj.getString("deliveryarea"), obj
.getString("cityname"), obj
.getString("zipcode"),
obj.getString("deliverystate"), obj
.getString("deliverytype"),
obj.getString("foodassoonas"),
deliveryDate, obj
.getString("deliverytime"),
obj.getString("ordertotalprice"),
obj.getString("payment_type"),
obj.getString("paypal_status"), obj
.getString("orderdate"));
// PendingOrderListDataStorage.NEW_ORDER
// .clear();
if (!PendingOrderListDataStorage.NEW_ORDER
.isEmpty())
PendingOrderListDataStorage.NEW_ORDER
.clear();
PendingOrderListDataStorage.NEW_ORDER
.add(ObjectItemData);
}
}
}
}
if (adp != null)
adp.notifyDataSetChanged();
else
makeList();
} catch (JSONException e) {
e.printStackTrace();
dialogView.showCustomToast(getActivity(), "Error");
}
} else {
dialogView.showCustomToast(getActivity(),
"Please Check your Internet Connection");
}
}
private void makeList() {
Log.d("Size: From New Orders List", ""
+ PendingOrderListDataStorage.NEW_ORDER.size());
if (PendingOrderListDataStorage.NEW_ORDER.size() > 0) {
adp = new NewOrderListviewAdapter(getActivity(),
R.layout.order_item_new,
PendingOrderListDataStorage.NEW_ORDER);
listView.setAdapter(adp);
adp.notifyDataSetChanged();
}
}
@SuppressLint("SimpleDateFormat")
String convertDate(String inputDate) {
SimpleDateFormat theDateFormat = new SimpleDateFormat("MM/dd/yyyy");
Date date = null;
try {
date = theDateFormat.parse(inputDate);
} catch (ParseException parseException) {
// Date is invalid. Do what you want.
} catch (Exception exception) {
// Generic catch. Do what you want.
}
theDateFormat = new SimpleDateFormat("yyyy-MM-dd");
return theDateFormat.format(date);
}
}
@Override
public void onRefresh() {
swipeRefreshLayout.setRefreshing(true);
if (!isRefreshing) {
isRefreshing = true;
new getNewOrders().execute();
}
}
}
NewOrderListViewAdapter.java
@Override
public View getView(final int position, View convertView,
final ViewGroup parent) {
final ViewHolder holder;
LayoutInflater inflater = ((Activity) mContext).getLayoutInflater();
if (convertView == null) {
convertView = inflater.inflate(layoutResourceId, null);
holder = new ViewHolder();
holder.btn_confirm = (TextView) convertView
.findViewById(R.id.confirm);
holder.btn_details = (TextView) convertView
.findViewById(R.id.details);
holder.title = (TextView) convertView.findViewById(R.id.title);
holder.orderDateTime = (TextView) convertView
.findViewById(R.id.orderDateTime);
holder.deliveryDateTime = (TextView) convertView
.findViewById(R.id.deliveryDateTime);
holder.orderNumberCode = (TextView) convertView
.findViewById(R.id.orderNumberCode);
holder.orderAddressName = (TextView) convertView
.findViewById(R.id.orderAddressName);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
NewOrderListObjectItem list = data.get(position);
holder.title.setText(list.getRestaurant_name());
Log.d("RestaurantName", list.getRestaurant_name());
holder.orderNumberCode.setText("#ORD " + list.getOrderid());
Log.d("Order No.:", "#ORD" + list.getOrderid());
holder.orderDateTime.setText(list.customername + " "
+ list.customerlastname);
Log.d("Order Date & Time", list.getOrderdate());
holder.deliveryDateTime.setText(list.getDeliverydate() + " "
+ list.getDeliverytime());
Log.d("Delivery Date & Time",
list.getDeliverydate() + "" + list.getDeliverytime());
holder.orderAddressName.setText(list.getDeliverystreet() + ", "
+ list.getDeliveryarea() + ", " + list.getDeliverycity() + ", "
+ list.getDeliverystate() + ", " + list.getDeliverystate());
holder.btn_details.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent next = new Intent(mContext, Orders.class);
Bundle bundle = new Bundle();
bundle.putString("order_id", holder.orderNumberCode.getText()
.toString());
Log.d("Order Id: ", holder.orderNumberCode.getText().toString());
bundle.putString("order_status", order_status);
Log.d("Order Status: ", order_status);
bundle.putInt("gridPositionClicked", position);
next.putExtras(bundle);
mContext.startActivity(next);
((Activity) mContext).overridePendingTransition(
R.anim.push_left_in, R.anim.push_left_out);
((Activity) mContext).finish();
}
});
holder.btn_confirm.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
boy_id = GlobalVariable.boy_id_one;
order_id = holder.orderNumberCode.getText().toString();
Log.d("CONFIRM_BUTTON", order_id);
new changeOrderStatus().execute();
}
});
return convertView;
}
答案 0 :(得分：1)
您正在清除PendingOrderListDataStorage.NEW_ORDER.clear（）; 在Asynctast的preExecute中，在将新数据添加到Asynctask的Onpostexecute中的列表之前清除数组。