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Flutter setState kullanımı

Why do you need to call setState in a stateful widget?

1 April 2022 Enpatika.com Genel

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.

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Which method is called to Rerender the widget tree once state is changed?

1 April 2022 Enpatika.com Genel

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.

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What can I use instead of setState in flutter?

1 April 2022 Enpatika.com Genel

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.

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Why do you need to call setState (() }) in a stateful widget when changing some internal data )?

1 April 2022 Enpatika.com Genel

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

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What is Statelesswidget and StatefulWidget in Flutter?

1 April 2022 Enpatika.com Genel

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.

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What is Statelesswidget and StatefulWidget in Flutter?

1 April 2022 Enpatika.com Genel

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.

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Is initState called after setState?

1 April 2022 Enpatika.com Genel

Because we can’t call setState() directly in the initState method, we can’t call it from a function called by initState either. Unless this function is asynchronous and the setState call is made after the first await .

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