Flutter run

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).

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. A BuildContext only belongs to one widget.

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. A BuildContext only belongs to one widget.

The build method is called any time you call setState , your widget’s dependencies update, or any of the parent widgets are rebuilt (when setState is called inside of those). Your widget will depend on any InheritedWidget you use, e.g. Theme. of(context) , MediaQuery. of(context) etc.16 Ağu 2019

The build method is called any time you call setState , your widget’s dependencies update, or any of the parent widgets are rebuilt (when setState is called inside of those). Your widget will depend on any InheritedWidget you use, e.g. Theme. of(context) , MediaQuery. of(context) etc.16 Ağu 2019

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).