@override
void initState() {
super.initState();
_loadData();
}
void _loadData() async {
await StorageUtil.getInstance();
String cookie = StorageUtil.getString('sess');
String page = currentPage.toString();
if (cookie != null) {
ApiService.getEstimateList(cookie, page, myAllestimate, search)
.then((value) {
if (value.data != null) {
if (count < _totalRecords) {
setState(() {
invoicelist.addAll(value.data);
print(value.data);
_totalRecords = value.recordsTotal;
});
print(
'List size is $count and TotalRecord - ${value.recordsTotal} , TotalFiltered - ${value.recordsFiltered}');
}
}
});
}
}
Future<bool> _loadMoreData() async {
print('_loadMoreData()');
await Future.delayed(Duration(seconds: 0, milliseconds: 1000));
currentPage += 1;
_loadData();
return true;
}
Future<void> _refresh() async {
currentPage = 1;
_totalRecords = 100;
invoicelist.clear();
_loadData();
}
getCustomFormattedDateTime(String givenDateTime, String dateFormat) {
// dateFormat = 'MM/dd/yy';
final DateTime docDateTime = DateTime.parse(givenDateTime);
return DateFormat(dateFormat).format(docDateTime);
}
onSearchTextChanged(String text) async {
String search = text.toLowerCase();
searchResult.clear();
if (text.isEmpty) {
setState(() {});
return;
}
if (_selectedIndex == 0) {
myAllestimate = 'my';
} else {
myAllestimate = 'all';
}
currentPage = 1;
String cookie = StorageUtil.getString('sess');
String page = currentPage.toString();
if (cookie != null) {
ApiService.getEstimateList(cookie, page, myAllestimate, search)
.then((value) {
if (value.data.length > 0) {
if (count < _totalRecords) {
setState(() {
searchResult.addAll(value.data);
_totalRecords = value.recordsTotal;
});
print(
'searchResult size is $count and TotalRecord - ${value.recordsTotal} , TotalFiltered - ${value.recordsFiltered}');
}
} else {
searchResult.clear();
setState(() {});
}
});
}
}
@override
Widget build(BuildContext context) {
return new Scaffold(
floatingActionButton: FloatingActionButton(
onPressed: () {
Navigator.push(
context,
new MaterialPageRoute(
builder: (context) =>
new CatalogService(pageDirection: pageDirection)));
},
backgroundColor: Colors.orange[600],
elevation: 2.0,
child: Icon(
Icons.add,
color: Colors.white,
),
),
floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
bottomNavigationBar: _bottomTab(),
appBar: new AppBar(
title: appBarTitle,
actions: [
new IconButton(
icon: actionIcon,
onPressed: () {
setState(() {
if (this.actionIcon.icon == Icons.search) {
this.actionIcon = new Icon(Icons.close);
this.appBarTitle = new TextField(
controller: controller,
onChanged: onSearchTextChanged,
style: new TextStyle(
color: Colors.white,
),
decoration: new InputDecoration(
prefixIcon:
new Icon(Icons.search, color: Colors.white),
hintText: "Search...",
hintStyle: new TextStyle(color: Colors.white)),
);
} else {
controller.clear();
searchResult.clear();
this.actionIcon = new Icon(Icons.search);
this.appBarTitle = new Text("Manage Estimate");
}
});
},
),
],
),
body: Stack(
children: [
Center(
child: Visibility(
visible: (search.length > 0 && searchResult.length > 0)
? true
: false,
child: Text('No Data Found'),
),
),
Container(
child: searchResult.length != 0 || controller.text.isNotEmpty
? searchResults()
: buildResults()),
],
));
}
Widget searchResults() {
return RefreshIndicator(
child: LoadMore(
isFinish: count >= _totalRecords,
onLoadMore: _loadMoreData,
child: ListView.builder(
itemBuilder: (BuildContext context, int index) {
final item = searchResult[index];
String date = item.invDate.toString();
String strDate = getCustomFormattedDateTime(date, 'dd-MM-yyyy');
return Container(
padding: EdgeInsets.only(
top: 10.0, left: 20.0, right: 20.0, bottom: 10.0),
child: GestureDetector(
onTap: () {
print(searchResult[index].id);
String bmaster = StorageUtil.getString('bmaster');
String cookie = StorageUtil.getString('sess');
String id = searchResult[index].id.toString();
String mobile = searchResult[index].mobile.toString();
int custId = invoicelist[index].custId;
var weburl = '', pdfUrl;
ApiService.viewInvoice(cookie, id, bmaster, 'estimate')
.then((value) {
if (value != null) {
var result = jsonDecode(value);
if (result['status'].toString() == '1') {
var decode = Uri.decodeFull(result['url']);
var pdf_url = Uri.decodeFull(result['pdf_url']);
pdfUrl = pdf_url.toString();
weburl = decode.toString();
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => WebViewContainer(
weburl, 'Estimate', pdfUrl, mobile, id, custId),
),
);
}
}
});
},
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Container(
width: ScreenUtil().setSp(150),
child: Text(
item.custName,
style: TextStyle(
fontSize: 14.0,
color: Colors.black,
fontFamily: 'montserratbold',
fontWeight: FontWeight.w500,
),
),
),
Padding(
padding:
EdgeInsets.only(top: 2.0, bottom: 2.0)),
Text(
"EST-" + item.invNumber,
style: TextStyle(
fontSize: ScreenUtil().setSp(12.0),
fontFamily: 'montserrat',
color: Colors.black),
),
Padding(padding: EdgeInsets.only(top: 2.0)),
Text(
strDate,
style: TextStyle(
fontSize: ScreenUtil().setSp(12.0),
fontFamily: 'montserrat',
color: Colors.black),
),
// Padding(padding: EdgeInsets.only(top: 2.0)),
// Text(
// 'Party Balance-' +
// item.p.toString(),
// style: TextStyle(
// fontSize: 12.0, color: Colors.black),
// ),
],
),
Column(
children: <Widget>[
Text(
'Rs.' + item.totalAmt,
style: TextStyle(
fontSize: ScreenUtil().setSp(12.0),
fontFamily: 'montserrat',
color: Colors.black),
),
Padding(padding: EdgeInsets.only(top: 10.0)),
Container(
width: ScreenUtil().setSp(100),
height: ScreenUtil().setSp(25),
decoration: BoxDecoration(
color:
Color(0xffffcdd2), // border: Border.all(
// color: Colors.red[500],
// ),
borderRadius:
BorderRadius.all(Radius.circular(5))),
child: Container(
alignment: Alignment.center,
child: Text(
(item.status == 0) ? 'Paid' : 'Not Paid',
style: TextStyle(
fontWeight: FontWeight.bold,
fontFamily: 'montserrat',
fontSize: ScreenUtil().setSp(12),
color: Colors.red),
),
),
),
],
),
],
),
Padding(padding: EdgeInsets.only(top: 15)),
Container(
margin: EdgeInsets.only(top: 5, bottom: 5),
child: const Divider(
height: 2,
thickness: 1,
),
),
// Text(item.custName),
],
),
),
);
},
itemCount: searchResult.length,
),
whenEmptyLoad: true,
delegate: DefaultLoadMoreDelegate(),
textBuilder: DefaultLoadMoreTextBuilder.english,
),
onRefresh: _refresh,
);
}
Widget buildResults() {
return RefreshIndicator(
child: LoadMore(
isFinish: count >= _totalRecords,
onLoadMore: _loadMoreData,
child: ListView.builder(
itemBuilder: (BuildContext context, int index) {
final item = invoicelist[index];
String date = item.invDate.toString();
String strDate = getCustomFormattedDateTime(date, 'dd-MM-yyyy');
return Container(
padding: EdgeInsets.only(
top: 10.0, left: 20.0, right: 20.0, bottom: 10.0),
child: GestureDetector(
onTap: () {
print(invoicelist[index].id);
String bmaster = StorageUtil.getString('bmaster');
String cookie = StorageUtil.getString('sess');
String id = invoicelist[index].id.toString();
String estNumber = invoicelist[index].invNumber.toString();
String mobile = invoicelist[index].mobile.toString();
int custId = invoicelist[index].custId;
var weburl = '', pdfUrl;
ApiService.viewInvoice(cookie, id, bmaster, 'estimate')
.then((value) {
if (value != null) {
var result = jsonDecode(value);
if (result['status'].toString() == '1') {
var decode = Uri.decodeFull(result['url']);
var pdf_url = Uri.decodeFull(result['pdf_url']);
pdfUrl = pdf_url.toString();
weburl = decode.toString();
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => WebViewContainer(weburl,
'Estimate', pdfUrl, mobile, estNumber, custId),
),
);
}
}
});
},
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Container(
width: ScreenUtil().setSp(150),
child: Text(
item.custName,
style: TextStyle(
fontSize: 14.0,
color: Colors.black,
fontFamily: 'montserratbold',
fontWeight: FontWeight.w500,
),
),
),
Padding(
padding:
EdgeInsets.only(top: 2.0, bottom: 2.0)),
Text(
"EST-" + item.invNumber,
style: TextStyle(
fontSize: ScreenUtil().setSp(12.0),
fontFamily: 'montserrat',
color: Colors.black),
),
Padding(padding: EdgeInsets.only(top: 2.0)),
Text(
strDate,
style: TextStyle(
fontSize: ScreenUtil().setSp(12.0),
fontFamily: 'montserrat',
color: Colors.black),
),
// Padding(padding: EdgeInsets.only(top: 2.0)),
// Text(
// 'Party Balance-' +
// item.p.toString(),
// style: TextStyle(
// fontSize: 12.0, color: Colors.black),
// ),
],
),
Column(
children: <Widget>[
Text(
'Rs.' + item.totalAmt,
style: TextStyle(
fontSize: ScreenUtil().setSp(12.0),
fontFamily: 'montserrat',
color: Colors.black),
),
Padding(padding: EdgeInsets.only(top: 10.0)),
Container(
width: ScreenUtil().setSp(100),
height: ScreenUtil().setSp(25),
decoration: BoxDecoration(
color:
Color(0xffffcdd2), // border: Border.all(
// color: Colors.red[500],
// ),
borderRadius:
BorderRadius.all(Radius.circular(5))),
child: Container(
alignment: Alignment.center,
child: Text(
'Not Paid',
style: TextStyle(
fontWeight: FontWeight.bold,
fontFamily: 'montserrat',
fontSize: ScreenUtil().setSp(12),
color: Colors.red),
),
),
),
],
),
],
),
Padding(padding: EdgeInsets.only(top: 15)),
Container(
margin: EdgeInsets.only(top: 5, bottom: 5),
child: const Divider(
height: 2,
thickness: 1,
),
),
// Text(item.custName),
],
),
),
);
},
itemCount: count,
),
whenEmptyLoad: true,
delegate: DefaultLoadMoreDelegate(),
textBuilder: DefaultLoadMoreTextBuilder.english,
),
onRefresh: _refresh,
);
}我正在我的loadmore列表视图中执行搜索，当我从API中搜索数据时，这会导致错误。
错误：
未处理异常：此小部件已被卸载，因此State不再具有上下文（并且应被视为已失效）。E/flutter（21599）：考虑在“dispose”期间取消任何活动的工作，或者使用“mounted”getter来确定State是否仍然是活动的。
2条答案
按热度按时间new9mtju1#
可以在调用setState（）之前检查mounted
布尔安装
此State对象当前是否在树中。
在创建State对象之后和调用initState之前，框架通过将State对象与BuildContext关联来“装载”该对象。State对象将保持装载状态，直到框架调用dispose，在此之后，框架将不再要求State对象再次生成。
除非mounted为true，否则调用setState是错误的。
https://api.flutter.dev/flutter/widgets/State/mounted.html
j0pj023g2#
if(mounted)已弃用。您不能直接使用。