The solution is to pass a new Key to WidgetB every time we need it to be rebuilt : WidgetA will see that WidgetB has changed and will rebuild it when setState is called. In other words, whenever a stateful widget’s Key property changes, calling setState on its parent will force a rebuild of the stateful widget.12 Tem 2021
Read moreWhy is the build () method on state and not stateful widget?
Why is the build method on State, and not StatefulWidget? Putting a Widget build(BuildContext context) method on State rather than putting a Widget build(BuildContext context, State state) method on StatefulWidget gives developers more flexibility when subclassing StatefulWidget .
Read moreCan initState be async?
In this example, we are going to show the way to run or call asynchronous functions, codes inside initState() in Flutter Apps. Sometimes, you may need to execute async code while initializing app. But Flutter will show an error if you add ‘async’ modifier to initState . See the example below to solve this issue.
Read moreHow do you call a build method in Flutter?
Calling the setState() method in a stateful widget in Flutter calls the build() method first. Not only that, the build() method rebuilds all the descendant widgets. To enhance your fluttering performance, you need to understand the inner mechanism of Flutter.22 May 2021
Read moreWhat is the use of setState () method in flutter?
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 moreWhat is Flutter build context?
A handle to the location of a widget in the widget tree . This class presents a set of methods that can be used from StatelessWidget. build methods and from methods on State objects. BuildContext objects are passed to WidgetBuilder functions (such as StatelessWidget. build), and are available from the State.
Read moreDoes a new state object is created if the widget rebuild?
The tldr version is that State objects are long lived, but StatefulWidget s (and all Widget subclasses) are thrown away and rebuilt whenever configuration changes .
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