Comments (6)
lcuis
commented on July 29, 2024
Hi @Thembelani-M ,
Thanks for reporting this issue.
Is this error a compilation or an execution error?
Is there a line referred to by this error?
from search_choices.
Thembelani-M
commented on July 29, 2024
@lcuis Thank you for the quick response.
This is an execution error.
When the exception was thrown, this was the stack:
#0 _DropdownDialogState.listWithPagination.<anonymous closure>.<anonymous closure> (package:search_choices/src/dropdown/dropdown_dialog.dart:980:58)
#1 MappedListIterable.elementAt (dart:_internal/iterable.dart:415:31)
#2 ListIterator.moveNext (dart:_internal/iterable.dart:344:26)
#3 new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:189:27)
#4 new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
#5 new List.of (dart:core-patch/array_patch.dart:47:28)
#6 ListIterable.toList (dart:_internal/iterable.dart:214:7)
#7 _DropdownDialogState.listWithPagination.<anonymous closure> (package:search_choices/src/dropdown/dropdown_dialog.dart:981:16)
#8 _FutureBuilderState.build (package:flutter/src/widgets/async.dart:612:55)
#9 StatefulElement.build (package:flutter/src/widgets/framework.dart:5409:27)
#10 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5297:15)
#11 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5462:11)
#12 Element.rebuild (package:flutter/src/widgets/framework.dart:5016:7)
#13 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2779:19)
#14 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:916:21)
#15 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:360:5)
#16 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1297:15)
#17 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1227:9)
#18 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1085:5)
#22 _invoke (dart:ui/hooks.dart:172:10)
#23 PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:401:5)
#24 _drawFrame (dart:ui/hooks.dart:140:31)
from search_choices.
faizananwerali
commented on July 29, 2024
same issue.
type '_Map<String, String>' is not a subtype of type 'Null'
futureSearchFn: (String? keyword,
String? orderBy,
bool? orderAsc,
List<Tuple2<String, String>>? filters,
int? pageNb) async {
try {
var response = await http
.get(Uri.parse(
"${url}countries?page=${pageNb ?? 1}${(keyword == null || keyword.isEmpty) ? "" : "&name=$keyword"}"))
.timeout(const Duration(seconds: 10));
if (response.statusCode != 200) {
throw Exception(
"Failed to get data from the internet");
}
var data = json.decode(response.body);
int nbResults = data["data"]["total"];
var records =
(data["data"]["data"] as List<dynamic>)
.map((item) {
return {
"value": item?["id"].toString() ?? "",
"name": item?["name"].toString() ?? "",
};
}).toList();
print('records: $records');
List<DropdownMenuItem> results = records.map<DropdownMenuItem>((item) =>
DropdownMenuItem(
value: item,
child: Card(
shape: RoundedRectangleBorder(
borderRadius:
BorderRadius.circular(4),
side: BorderSide(
color: Colors.blue,
width: 1,
),
),
margin: EdgeInsets.all(1),
child: Padding(
padding:
const EdgeInsets.all(6),
child: Text("${item["name"]}"),
),
),
))
.toList();
return (Tuple2<List<DropdownMenuItem>, int>(
results, nbResults));
} catch (e) {
print("Error: $e");
throw Exception("Failed to fetch data");
}
},══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following _TypeError was thrown building FutureBuilder<Tuple2<List<DropdownMenuItem<dynamic>>,
int>>(dirty, state: _FutureBuilderState<Tuple2<List<DropdownMenuItem<dynamic>>, int>>#54481):
type '_Map<String, String>' is not a subtype of type 'Null'
The relevant error-causing widget was:
FutureBuilder<Tuple2<List<DropdownMenuItem<dynamic>>, int>>
FutureBuilder:file:///Users/faizanrupani/.pub-cache/hosted/pub.dev/search_choices-2.2.7/lib/src/dropdown/dropdown_dialog.dart:941:15
When the exception was thrown, this was the stack:
#0 _DropdownDialogState.listWithPagination.<anonymous closure>.<anonymous closure>
(package:search_choices/src/dropdown/dropdown_dialog.dart:980:58)
#1 MappedListIterable.elementAt (dart:_internal/iterable.dart:425:31)
#2 ListIterator.moveNext (dart:_internal/iterable.dart:354:26)
#3 new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:189:27)
#4 new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
#5 new List.of (dart:core-patch/array_patch.dart:39:18)
#6 ListIterable.toList (dart:_internal/iterable.dart:224:7)
#7 _DropdownDialogState.listWithPagination.<anonymous closure> (package:search_choices/src/dropdown/dropdown_dialog.dart:981:16)
#8 _FutureBuilderState.build (package:flutter/src/widgets/async.dart:609:55)
#9 StatefulElement.build (package:flutter/src/widgets/framework.dart:5583:27)
#10 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5471:15)
#11 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5634:11)
#12 Element.rebuild (package:flutter/src/widgets/framework.dart:5187:7)
#13 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2895:19)
#14 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:984:21)
#15 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:457:5)
#16 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1325:15)
#17 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1255:9)
#18 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1113:5)
#19 _invoke (dart:ui/hooks.dart:312:13)
#20 PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:383:5)
#21 _drawFrame (dart:ui/hooks.dart:283:31)
════════════════════════════════════════════════════════════════════════════════════════════════════
Tried
DropdownMenuItem(
value: item['value'],got error.
type 'String' is not a subtype of type 'Null'
got the same error with this also.
var records =
(data["data"]["data"] as List<dynamic>)
.map((item) {
return {
"id": item?["id"].toString() ?? "",
"name": item?["name"].toString() ?? "",
};
}).toList(); DropdownMenuItem(
value: item['id'],from search_choices.
lcuis
commented on July 29, 2024
Hi @faizananwerali and @Thembelani-M ,
Sorry for the delay and the lack of answer. It is difficult for me to investigate this issue. At first sight, it looks like you have at least one DropdownMenuItem value that is not as expected (likely null).
Are your queries always behaving as intended?
Do you see circumstances when the error does not occur?
from search_choices.
faizananwerali
commented on July 29, 2024
I was never able to run it. None of the values were null. I spent hours then I switched to other library so I can show client something.
from search_choices.
lcuis
commented on July 29, 2024
I understand @faizananwerali and I am really sorry about that. I wish I had all the information necessary to investigate.
I never encountered such case myself and CI with Flutster never showed any issue.
I will now close this issue.
Feel free to reopen this issue in case anyone can share a full example.
from search_choices.
Related Issues (20)
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- build failed after flutter upgrade HOT 9
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