bloc Questions

LateInitializationError hive using bloc – Flutter

March 29, 2023
abdo
2 Answers

======== Exception caught by widgets library ======================================================= The following LateError was thrown building KeyedSubtree-[GlobalKey#74540]: LateInitializationError: Field '_persondb' has not been initialized. The relevant error-causing widget was: Scaffold Scaffold:file:///C:/Users/Prive/StudioProjects/tanja/lib/person/screens/personsScreen/personsSreen.dart:18:16 When the exception was thrown, this was the stack: C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/internal/js_dev_runtime/private/ddc_runtime/errors.dart 266:49 throw…

VIEW QUESTION

Flutter Bloc emit how to handle when the stream is done

March 29, 2023
RINDAMAN
2 Answers

await emit.onEach( // This stream, how do you handle when this stream is done? stream, onData: (data){ } ); Normally on Flutter Stream we have a callback onDone, but on emit onEach or forEach flutter bloc callback, onDone do not…

VIEW QUESTION

Unsupported operation: Cannot add to an unmodifiable list unsing Bloc – Flutter

March 17, 2023
Gbenga B Ayannuga
2 Answers

i am using bloc to add and remove from am list.. my bloc state is like this, @freezed class InterestActionState with _$InterestActionState { factory InterestActionState({ required bool isSubmitting, required List<String> selectedInterest, required Option<Either<InterestFailure, Unit>> intrestFailureOrSuccessOption, }) = Initial; factory InterestActionState.initial()…

VIEW QUESTION

How to create BLoC initial state based on dynamic JSON response – Flutter

March 15, 2023
Vaibhav
2 Answers

In my Flutter project I want to initialise BLoC (Provider/Cubit) once API responds with definition of shape of the state required for entire app. Consider following shapes shape-1 { arr1: [], arr2: [], selected: false } shape-2 { arr1: [],…

VIEW QUESTION

Should I use StatefulWidget or a Cubit for this case? – Flutter

March 7, 2023
A.Ktns
2 Answers

I have to build a single page that consists of let's say a switch and a button. The user can continue to the next screen only if he has turned on the switch, then the user can press the button…

VIEW QUESTION

Flutter Bloc Search Textfield reloads on every state change

March 6, 2023
Joel
2 Answers

I've developed a search screen using bloc patter to filter local list data. Here my problem is every-time I search filter the list the search box too get reloaded due to event change. Any solutions to fix such issue. @override…

VIEW QUESTION

Initiate global bloc on Logout – Flutter

February 17, 2023
Haresh Gediya
2 Answers

I'm providing bloc at top of all view to access at globally. When I'm doing logout and re-login without closing app, event not called because it is already initiate. Here, I want to refresh bloc on logout, so that FetchList…

VIEW QUESTION

How to show ListView.builder with bloc – Flutter

February 16, 2023
Bilbo Baggins
2 Answers

I want to showing list of items with ListView.builder. My code is success connect to API, but the problem is I do not know how to display the items, instead the length of the items. Here I attach the code:…

VIEW QUESTION

The return type 'Null' isn't a 'Future<Message>', as required by the closure's context – Flutter

February 13, 2023
FERHATI KHALIL
2 Answers

i am using Mockitou package to Test my MessageBloc and the logic of my Message application in Flutter but i have common issue in all my tests mentioned in the title (The return type 'Null' isn't a 'Future<Message>', as required…

VIEW QUESTION

MultiBlocProvider throws an error when I try to use 2 blocs – Flutter

February 12, 2023
raiton
2 Answers

I was using this setup with BlocProvider without any issues, but now i'm creating a page where i need to access 2 different Blocs, as the changes there need to go to 2 different endpoints. Worst case scenario i'll create…

VIEW QUESTION