#Flutter provider dispose code

Now, the first question that should strike your mind is: “ Provider is InheritedWidget, but easier” – said by Rémi Rousselet in Flutter Europe. It is not actually a state management solution (as it doesn’t deal with the architecture of the app), but it is rather more like a dependency injection technique, and it also provides some additional advantages.

#Flutter provider dispose code

There are various libraries that try to make this verbose code better, and the most highly recommended package among them is Provider. This sort of solves the issue, but InheritedWidget itself leads to a lot of boilerplate and nested code (reducing readability). Using this, you can grab variables further up the widget tree directly (without passing them). The first solution for this that is provided by the Flutter framework itself is the InheritedWidget. The first step to make your code more concise is to avoid passing variables through constructors that you need to access three to four levels down the widget tree. This helps to keep the codebase manageable as it grows and also to prevent a few bugs. This is when you realize you require some kind of state management technique.Īnother important reason for using state management in Flutter is to separate your business logic and the app UI by creating some abstraction. This is something you might not care about much when you first start working with an app idea, but as the app grows further down the line, you might need to retain and share a state across different classes. In simple apps, setState() is enough to manage the state of widgets in your app. Why do you need state management in your Flutter project? This is where state management solutions help a lot. The state that is shared across different widgets is known as the app state (sometimes also called shared state). To learn more about the difference between StatelessWidget and StatefulWidget, check out this article. As the state is contained within a single widget, there is no need for any complex state management techniques – just using a simple StatefulWidget to rebuild the UI is enough. The state that is local to any widget is known as ephemeral state (sometimes also called UI state). The states that you need to manage can be separated into two conceptual types: (You will also find this in the official Flutter state management docs.) In a broad sense, app state consists of everything that is loaded in memory while the app is running, including the app’s assets and the information about the framework, like the UI, animation state, fonts and so on.īut these are already handled by the Flutter framework, so when we talk about managing state, we are referring to the data you need in order to rebuild your UI at any moment in time. This article is written by Souvik Biswas Ephemeral state and app state Finally, we will take a deep dive into Riverpod and explore how it simplifies Flutter state management. In this article, we will take a look into what “ states” in Flutter are and why you even need a state management solution (when the Flutter framework itself manages most of the states for you 🤔). Though this is a good thing, it makes it quite intimidating for developers to choose a proper state management approach for their project. This is partially due to Flutter’s huge range of choices when it comes to state management. Many people who are just getting started with Flutter (and even those who have some experience) are afraid of the term state management. State management is a hot topic in relation to Flutter and is also an important concept that you should definitely explore.