![]() fetch data from the internet and process it). The BLoC component has to do all work related to the business logic (i.e. The main responsibility of the BLoC component is to interpret the action, handle it, and return a new or updated state to the UI component. When a user clicks and interacts with the UI, they send an action or an event to the BLoC component. BLoC architecture is rather simple, and this is what makes it easy to test and expand This simple diagram demonstrates how the BLoC architecture works. And while these small components are discrete, it’s also easy to test any aspect of an application.īLoC attempts to make state changes predictable by regulating when a state change can occur and enforcing a single way to change state throughout an entire application. The ability to create complex applications out of smaller components is what makes the BLoC architecture powerful. Due to this, code also becomes more reusable, as you can apply the same logic in multiple places instead of having to develop it again.īLoC is rather simple and elegant, which makes it easy to understand for both junior and experienced developers that provide Flutter app development services. The testability of the apps built with BloC architecture is better because of the separation between the logic and widgets themselves. This prevents multiple rebuilds and ensures better performance. BloC, however, defines business logic differently by using bloc classes. ![]() This initiates rebuilds and causes performance issues. Usually what developers do is use setState several times. BLoC, which was specifically developed for Flutter, is the closest to perfection for the Flutter framework, as it’s built around three core values:īloC allows easier management for stateful widgets. There are many Flutter app architectures to choose from, but deciding which one to use can be daunting, as no architecture can ever fulfill all your needs.
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