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 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 command patterns?
The command pattern should be used when: You need a command to have a life span independent of the original request , or if you want to queue, specify and execute requests at different times. You need undo/redo operations. The command’s execution can be stored for reversing its effects.
Read moreWhat is builder and context in Flutter?
As we know that every widget in Flutter is created by the build method and the build method takes a BuildContext as an argument . This helps the build method to find which widget it is going to draw and also it helps in locating the position of the widget to be drawn in the widget tree.
Read moreWhat is widget build?
A widget’s main job is to implement a build() function, which describes the widget in terms of other, lower-level widgets . The framework builds those widgets in turn until the process bottoms out in widgets that represent the underlying RenderObject , which computes and describes the geometry of the widget.
Read moreWhat is builder context in Flutter?
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 moreWhat is build () in Flutter?
build method Null safety Describes the part of the user interface represented by this widget . The framework calls this method when this widget is inserted into the tree in a given BuildContext and when the dependencies of this widget change (e.g., an InheritedWidget referenced by this widget changes).
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