BlocBuilder is a Flutter widget which requires a bloc and a builder function . BlocBuilder handles building the widget in response to new states. BlocBuilder is very similar to StreamBuilder but has a more simple API to reduce the amount of boilerplate code needed.
Read moreDoes Flutter use REST API?
Flutter provides http package to consume HTTP resources . http is a Future-based library and uses await and async features. It provides many high level methods and simplifies the development of REST based mobile applications.
Read moreWhat is Cubit in Flutter BLoC?
Cubit: As we know, cubit is not event-driven . We call functions (like actions) to send these “states”, so we can track which state were emitted and not events because here there are not events. We can track state overriding the “onChange” function; another way is using a BLoC observer.
Read moreHow do you make a cubit in Flutter?
CubitProvider( create: (BuildContext context) => CubitA() , child: ChildA(), ); In some cases, CubitProvider can be used to provide an existing cubit to a new portion of the widget tree. This will be most commonly used when an existing cubit needs to be made available to a new route.
Read moreHow do you create a BLoC in Flutter?
Code Implementation Let’s build a simple app to implement this Bloc pattern. We will create a simple counter app that has two buttons to increment and decrement a number. Start a new Flutter project by typing “flutter create [project_name]” in the console. Create BlocCounter class in counter_bloc.
Read moreWhat is mapEventToState?
In the current version, mapEventToState returns a Stream which lends itself to relying on async generators (async*) in order to react to events and emit states . The new on<Event> API introduced in v7. 2.0 makes it easier and safer to implement complex state changes while eliminating uncertainty.
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