How to Use InheritedWidget in Flutter
Explore InheritedNotifier and InheritedModel - subclasses of InheritedWidget in Flutter
Unless you’re a Multimillion or a Billion dollar company, you probably don’t have a multimillion-dollar ad budget or professional Spinners. Your product needs to stand out on its own merits like App Quality, Performance, UI design, and User Experience. Most companies don't care about you, your product, and your vision or dreams. They don't give a damn about either their work helped you to get more business, revenue, users, or solving a problem. That's where CANOPAS comes into the picture. Whether you have a GREAT IDEA and you want to turn it into a DIGITAL PRODUCT. OR You need a team that can turn your NIGHTMARES into SWEET DREAMS again by improving your existing product. We help Entrepreneurs, startups, and small companies to bring their IDEA to LIFE by developing digital products for their business. We prefer using Agile and Scrum principles in project management for flexibility and rapid review cycles. We are not bound by technology. We will learn new technology if it significantly improves the performance of your app. We will solve your tech-related problems even though we are not THE EXPERT in it. And we've done it multiple times in the last 7 years. In the last seven years, we helped... A STARTUP to expand its users from 2500 to over 100000 by developing mobile apps for them. An enterprise client to redevelop their app that has 1M+ monthly paid users and 10M+ app downloads. Another enterprise client(5M+ app downloads in each store) to fix bugs and broken parts in the app and as a result, they had over 98% crash-free users. We offer a 100% MONEY BACK GUARANTEE if you don't like our work. No questions asked. Visit : https://canopas.com/blog
InheritedWidget provides a way to share data across the widget tree in Flutter. It serves as a container for data that can be accessed by any descendant widget in the hierarchy. Whenever the data within the InheritedWidget changes, it triggers a rebuild of all the dependent widgets in the subtree.
However, besides InheritedWidget, there are two other subclasses, InheritedNotifier and InheritedModel, that offers unique approaches to sharing data in Flutter.
In this article, we will explore each of the subclasses and how they can be implemented by code.
Table of contents
What is InheritedNotifier?
Defining the Listenable class
Creating InheritedNotifier Class
Update the state
Using the InheritedNotifier
Key Points
What is InheritedModel?
Creating the InheritedModel Class
Using the InheritedModel
Key Points
Conclusion
What is InheritedNotifier?
InheritedNotifier is a subclass of InheritedWidget that combines the capabilities of InheritedWidget and ChangeNotifier. It propagates changes from a ChangeNotifier to descendant widgets. By wrapping ChangeNotifier with InheritedNotifier, you can automatically rebuild dependent widgets whenever the ChangeNotifier triggers updates using notifyListeners().
When creating an InheritedNotifier, you need to provide a Listenable object as its notifier parameter, such as ValueNotifier for simple objects or ChangeNotifier for complex objects.
To better understand the concept, let’s implement the demo.
For full demo access, check out Canopas Blog.
