flutter-bloc

问题 I am a beginner in Dart language development. I try to create a sample flutter application BLOC pattern inspired by this GitHub repo, but I got some error message related to the class inheritance. I am already familiar with the inheritance and superclass and subclass programming in the dot net C# language. But in the case of the dart, I need some advice. Here is my code: class UserRegBloc extends Bloc<UserRegEvent, UserRegState> { UserRepository userRepository; UserRegBloc({@required

问题 I am a beginner in Dart language development. I try to create a sample flutter application BLOC pattern inspired by this GitHub repo, but I got some error message related to the class inheritance. I am already familiar with the inheritance and superclass and subclass programming in the dot net C# language. But in the case of the dart, I need some advice. Here is my code: class UserRegBloc extends Bloc<UserRegEvent, UserRegState> { UserRepository userRepository; UserRegBloc({@required

问题 Below is the code. Navigation to Login page, from Home page ElevatedButton( onPressed: () => Navigator.of(context, rootNavigator: true) .push(MaterialPageRoute( fullscreenDialog: true, builder: (context) => UserLoginPage(), )), child: Text('Login to continue'), ), Inside Login page: BlocConsumer<UserAuthCubit, UserAuthState>( listener: (context, state) { if (state is UserAuthorized) { Navigator.of(context, rootNavigator: true).pop(); } if (state is UserAuthWaiting) { showModalBottomSheet(

问题 How would one load a set of local images for display in a widget (noting this is async - see function below) triggered by (based on) a change in state from a flutter_bloc for “settings”? Noting this bloc is persisted too via hydrated_bloc. So the use case for which I’m asking how do I code this in flutter (noting I’m using flutter_bloc) is: Use Case - Render different set of images on the same Widget I have for dynamically displaying a room for a 2D point & click adventure type game, BASED ON

问题 There are many versions of implementation of BLoC pattern. One of them is flutter_bloc by Felix Angelov. On one of the social medias I came across of the statement that flutter_bloc is not a good choice for the project and another BLoC or another state management should be chosen instead . Actually it was a small standard project separated into layers:domain,application,infrastructure and presentation. Nothing special about it. So the guy who complained about the wrong choice was saying that

问题 I have two BLoCs. EstateBloc EstateTryBloc My Application basically gets estates from an API and displays them in a similar fashion Now I wanted to add a sort functionality, but I could only access the List of Estates via a specific state. if(currentState is PostLoadedState){{ print(currentState.estates); } I wanted to make the List of estates available for whichever bloc, that needed that list. What I did was, I created the EstateTryBloc, which basically contains the List of estates as a

问题 I would like download the data, but also use the application all the time. Can you tell me if it's right solution? The case is we press button download and call funtion bloc.dispatch(Event.download()); In mapEventToState in _Download event we reqest data. But we don't wait for response because we don't want to block others events which are changing view. So I create Future and after getting response I call event _UpdateData() where I process downloaded data and generate state with them. It's

问题 Hello I'm trying to listen state of bloc form other bloc. I'm using this package https://pub.dev/packages/bloc From my UserBloc I want listen AuthBloc and when It has the state AuthenticationAuthenticated the UserBloc should fire an event. final UserRepository userRepository; final authBloc; StreamSubscription authSub; UserBloc({ @required this.userRepository, @required this.authBloc}) { authSub = authBloc.listen((stateAuth) { //here is my problem because stateAuth, even is

问题 Hello I'm trying to listen state of bloc form other bloc. I'm using this package https://pub.dev/packages/bloc From my UserBloc I want listen AuthBloc and when It has the state AuthenticationAuthenticated the UserBloc should fire an event. final UserRepository userRepository; final authBloc; StreamSubscription authSub; UserBloc({ @required this.userRepository, @required this.authBloc}) { authSub = authBloc.listen((stateAuth) { //here is my problem because stateAuth, even is

问题 example_states: abstract class ExampleState extends Equatable { const ExampleState(); } class LoadingState extends ExampleState { // } class LoadedState extends ExampleState { // } class FailedState extends ExampleState { // } example_events: abstract class ExampleEvent extends Equatable { // } class SubscribeEvent extends ExampleEvent { // } class UnsubscribeEvent extends ExampleEvent { // } class FetchEvent extends ExampleEvent { // } example_bloc: class ExampleBloc extends Bloc