![]() ![]() One popular choice for architecture in Flutter is the BLoC (Business Logic Components) pattern. One key aspect of building high-quality Flutter apps is implementing a robust architecture. ![]() In addition, Flutter has been recognized as a top-performing framework regarding developer satisfaction and adoption by multiple industry reports, such as the "2020 Developer Survey Results" by Stack Overflow and the "2021 Mobile App Development Frameworks" report by GoodFirms. Nearly 90% have reported being "satisfied" or "very satisfied" with Flutter. It allows developers to build natively compiled mobile, web, and desktop applications from a single codebase.Īccording to the latest survey conducted by Google, over 50% of Flutter developers have been using the framework for less than a year. The way it’s done is that Riverpod creates a container for all providers which exists separately from the tree.Flutter is a highly popular open-source mobile application development framework created by Google. Riverpod and its satellite flutter_riverpod do not rely on Flutter itself for dependency injection, because they don’t rely on context. Now, most of the Flutter devs on the internet will tell you that this is a bit too many global state providers, but again, for a lot of real-life projects, it’s much easier to implement and forget, especially if the customer is pressing deadlines. On the other hand in teams of mixed experience and in convoluted projects that have pressing deadlines, you can often have this in your widget tree: On one hand, it makes it easier to limit a bloc only to the subtree that is governed by its state. Each BlocProvider stores a reference to a Bloc or Cubit that gets passed down the subtree of widgets. This means that you have to add BlocProvider widgets into the widget tree on a level of the tree that is covered by a particular Bloc. The provider relies on Flutter’s context, which is inseparable from the widget tree. This is where the main difference lies.įlutter_bloc relies on its own extension of Provider to allow Flutter widgets to access a Bloc instance. Providing state to the widget treeīoth Bloc and Riverpod have satellite packages for use with Flutter - respectively flutter_bloc and flutter_riverpod. The main differences come from the way you inject your state management into UI and how you consume the respective package state. This changed in 8.0 where Bloc authors introduced a concise way to map events to state directly in the constructor body of a bloc.Īs you can see, there isn’t much of a difference between Bloc/Cubit and State Notifier. Apart from state class and a bloc itself, you needed a separate mapping of events to the state. Prior to version 8.0, using Bloc was a bit cumbersome due to the amount of boilerplate code you had to write. Where Cubit uses emit(event) syntax, State Notifier uses state = event.īloc on the other hand relies on events instead of functions to get feedback from UI to Cubit. The only difference is in the syntax of emitting state. You can swap “cubit” in the picture above and nothing will change. This approach is literally the same as State Notifier from a developer’s perspective. As illustrated by Bloc authors, the workflow of Cubit looks the following way: The reason being is that Cubit while being a bit simplified version of Bloc, looks and feels exactly the same way as State Notifier for a developer. Bloc/Cubit and State Notifierįirst of all, we are going to throw out Cubit from this comparison. Let’s start by comparing the state management packages. Riverpod on the other hand is literally Provider 2.0 for DI and has a State Notifier package bundled with it for state management (and the name Riverpod is an anagram of the Provider for the reason that it’s next generation Provider). Both of these packages can be virtually split into two parts: dependency injection and state management.īloc uses its own extensions of the Provider package for DI and Bloc or Cubit classes for storing state. Riverpod and Bloc are the most prominent packages which promote an immutable state (meaning that you cannot change the state of the app from the UI, so you eliminate the possibility of a rogue code behaving unpredictably).Ĭomparing Riverpod and Bloc is not strictly a correct approach. ![]() There are countless threads on Twitter and Reddit posts that pitch one solution against another or preach a pure solution of only using Flutter-provided classes like ChangeNotifier, but when it comes to real-life products, you have to decide on a stack of third parties and approaches that would be most beneficial to your team and your app. One of the most actively asked questions from Flutter beginners is “What is the best state management library?”. ![]()
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