State Manager
If you are new to Flutter and state management, I suggest using riverpod package. Provider and Riverpod are both good.
provider
InheritedWidget are snippets of code that allow you to reuse and easily add functionality to widgets. This package adds a wrapper around it so they’re easier to use and more reusable.
Too often when building an interface, you are required to instantiate new classes for widgets that are semantically the same. Provider offers a solution by using InheritedWidget in place of manually making a custom class each time. This way, developers can keep memory usage low while composing large layouts with many user interfaces.
Not only does it reduce production overhead in terms of wasted resources and allocation/disposal costs due to increased simplicity, but this process allows code reuse in places where inheritance is appropriate without having to write boilerplate every time – leading to increased scalability for larger projects.
riverpod
riverpod offers a simple method to access state from anywhere in your Flutter app. It is robust and testable.
riverpod can catch errors at compile time and remove nesting for listening/combining objects. It makes the code more testable.
bloc
It’s a reliable state management logic that aids in the implementation of the BLoC (Business Logic Component) design pattern.
For Flutter, it has flutter_bloc which proivdes BloC design pattern widgets for BloC that make it simple to implement. It is designed to work with the bloc state management package.