Stateless Widget: The widgets whose state can not be altered once they are built are called stateless widgets. These widgets are immutable once they are built i.e any amount of change in the variables, icons, buttons, or retrieving data can not change the state of the app.19 Mar 2021
Read moreWhat is DART key?
A Key is an identifier for Widgets, Elements and SemanticsNodes . A new widget will only be used to update an existing element if its key is the same as the key of the current widget associated with the element.
Read moreWhen should I use stateful widgets?
Stateful widgets are useful when the part of the user interface you are describing can change dynamically , e.g. due to having an internal clock-driven state, or depending on some system state.
Read moreWhen should Super initState be called?
super. initState() should always be the first line in your initState method . From docs: initState(): If you override this, make sure your method starts with a call to super.
Read moreWhat is super initState in Flutter?
Credit to @Remi, initState() is a method which is called once when the stateful widget is inserted in the widget tree . 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.12 Eyl 2018
Read moreWhat does initState () do in Flutter?
InitState() is used to subscribe to the object . 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).
Read moreWhat is void initState () in Flutter?
initState() is a method of class State and it is considered as an important lifecycle method in Flutter. initState() is called only Once and we use it for one time initializations. Example : To initialize data that depends on the specific BuildContext . To initialize data that needs to executed before build() .
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