What 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.

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What 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.

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What 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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