Overriding of initState() method performs initialization which depends on the location at which this object was inserted into the tree (like context) or on the widget used to configure this object (or widget). In simple terms, while a page in flutter gets created on screen, this method gets called at very first.29 Nis 2020
Read moreWhat is override in Flutter?
The @override annotation applies to instance methods, instance getters, instance setters and instance variables (fields) . When applied to an instance variable, it means that the variable’s implicit getter and setter (if any) are marked as overriding. It has no effect on the variable itself.
Read moreHow do you override initState in Flutter?
We generally override this method if we need to do some sort of initialisation work like registering a listener because, unlike build() , this method is called once. And to unregister your listener (or doing some post work), you override dispose() method.
Read moreHow do I override widgets in Flutter?
Note that you can do it quickly by clicking on your widget and do (ctrl +) .
Read moreHow do I rebuild a stateful widget?
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 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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