A widget whose content stays synced with a ValueListenable . Given a ValueListenable<T> and a builder which builds widgets from concrete values of T , this class will automatically register itself as a listener of the ValueListenable and call the builder with updated values when the value changes.
Read moreWhat is the alternative of setState in Flutter?
The short answer is that just add currentIndex as one of the parameter inside your navBarSection . Inside home. dart , just pass the currentIndex of the page.
Read moreWhat is change notifier in Flutter?
ChangeNotifier is a simple class included in the Flutter SDK which provides change notification to its listeners . In other words, if something is a ChangeNotifier , you can subscribe to its changes.
Read moreWhat is a provider flutter?
The provider package is an easy to use package which is basically a wrapper around the InheritedWidgets that makes it easier to use and manage . It provides a state management technique that is used for managing a piece of data around the app.
Read moreWhat is listener flutter?
Listener class Null safety. A widget that calls callbacks in response to common pointer events . It listens to events that can construct gestures, such as when the pointer is pressed, moved, then released or canceled.
Read moreWhat is inherited widget in flutter?
In flutter, the inherited widget is a base class that allows those classes to extend the information under the tree from it . Inherited widgets are also a kind of state management technique. It works by telling registered build references when a change occurs.
Read moreWhat is ValueNotifier in flutter?
ValueNotifier is a special type of class that extends Changenotifier, which can hold a single value and notifies the widgets which are listening to it whenever its holding value gets change .15 Eki 2021
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