A widget is either stateful or stateless. If a widget can change—when a user interacts with it, for example—it’s stateful. A stateless widget never changes . Icon , IconButton , and Text are examples of stateless widgets.
Read moreWhy do we need stateless widget?
Stateless widget are useful when the part of the user interface you are describing does not depend on anything other than the configuration information in the object itself and the BuildContext in which the widget is inflated .
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 moreWhich method is called to Rerender the widget tree once state is changed?
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 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 moreCan a stateless widget contain a stateful widget in flutter?
A stateful widget is defined as any widget which changes its state within its lifetime. But it is a very common practice for a StatelessWidget to have a StatefulWidget as one of its children .9 Eyl 2018
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