#Flutter provider update

FutureProvider takes a Future class and updates the widgets depending on it when the future is completed.

StreamProvider listens to a stream, exposes the latest value emitted, and asks widgets dependent on the stream to rebuild.

ValueListenableProvider listens to a ValueListenable and exposes the value.

ChangeNotifierProvider is similar to ListenableProvider but for ChangeNotifier objects, and calls ChangeNotifier.dispose automatically when needed.

It will listen, then ask widgets depending on it and affected by the state change to rebuild any time the listener is called

ListenableProvider is the specific provider used for listenable objects.

The Provider class takes a value and exposes it, regardless of the value type.The Provider package offers different types of providers – listed below are some of them: Whatever change in the state observed from the ChangeNotifier class causes the listening widget to rebuild. Three major components make all of this possible: the ChangeNotifier class in Flutter, the ChangeNotifierProvider (primarily used in our sample app), and the Consumer widgets. As soon as the state changes, that particular widget rebuilds without affecting other widgets in the tree.

Recall what we discussed about Provider earlier: that widgets listen to changes and notify each other if there is a rebuild. Therefore, instead of the entire widget tree rebuilding when there is a state change, only the affected widget is changed, thus reducing the amount of work and making the app run faster and more smoothly.

#Flutter provider update

In Provider, widgets listen to changes in the state and update as soon as they are notified. The Provider package, created by Remi Rousselet, aims to handle the state as cleanly as possible. Flutter can also use the state to display pieces of information to the user. That means everything widgets do requires handling the data retrieved from the user and passing it among themselves to perform one or more operations. The state of an app can be updated or completely changed at the start of an application, or when a page reloads.

The “state” in Flutter refers to the data stored inside a widget that can be modified depending on the current operation. Let’s talk about what it means to manage the state in a Flutter application.

In this article, we will be building a sample app with one of the best state management packages for Flutter: Provider.īefore we begin, note that this article assumes you have an operational Flutter development environment on your machine, along with working knowledge of Flutter. Many state management solutions have been developed over the years, each based on the same concept of manipulating or modifying the state in the cleanest and most easily accessible way possible. Therefore, managing this data in the best way possible ensures the application is clean-coded, properly abstracted, operates smoothly, and delivers the best results possible. This is because everything we do in Flutter, from operations related to receiving information from a user to displaying a piece of data, deals with the state. The concept of state management remains one of the most critical topics in Flutter. A quick guide to Provider for Flutter state management Chinedu Imoh Follow Chinedu is a tech enthusiast focused on full-stack JavaScript and Infrastructure engineering.