Flutter widgets are built using a modern framework that takes inspiration from React. The central idea is that you build your UI out of widgets. Widgets describe what their view should look like given their current configuration and state .
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 moreWhat is the purpose of build context in Flutter?
Notion of BuildContext A BuildContext is nothing else but a reference to the location of a Widget within the tree structure of all the Widgets which are built . In short, think of a BuildContext as the part of Widgets tree where the Widget is attached to this tree.6 Ağu 2018
Read moreWhy do we use stateless?
We use a stateless widget when we create an application that isn’t required to redraw a widget again and again . For example, when we are creating an AppBar , a stateless widget can be scaffolding or icons that do not need to be changed.1 Tem 2021
Read moreWhat is stateful and stateless widget?
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 use 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 more