The setState() method notifies the framework that the internal state of the current object is “dirty,” which means that it has been changed in a way that might impact the UI. After this notification, the framework will call the build() method to update and rebuild a widget.
Read moreWhat can I use instead 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 moreWhy do you need to call setState in a stateful widget?
Calling setState notifies the framework that the internal state of this object has changed in a way that might impact the user interface in this subtree , which causes the framework to schedule a build for this State object.
Read moreWhy do you need to call setState (() }) in a stateful widget when changing some internal data )?
setState is a way to dynamically change the UI. We call it inside the State Object class of the StatefulWidget. Calling setState marks the corresponding Widget dirty .20 Haz 2021
Read moreHow do I make widgets not rebuild in flutter?
The ultimate solution to prevent widget rebuild by flutter
Read moreHow do I rebuild a child’s widget?
A nice way to rebuild only a child widget when a value in the parent changes is to use ValueNotifier and ValueListenableBuilder . Add an instance of ValueNotifier to the parent’s state class, and wrap the widget you want to rebuild in a ValueListenableBuilder .
Read moreDoes setState rebuild widget?
When setState() is called on a State, all descendent widgets rebuild . Therefore, localize the setState() call to the part of the subtree whose UI actually needs to change.
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