Tag: What are methods 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).

Types of Widgets: There are broadly two types of widgets in the flutter: Stateless Widget. Stateful Widget.

Methods are functions on a class that provide behavior for an object . Instance methods on objects are exposed via instances of the class. They have access to other variables and methods on the instance, as well as the keyword this .

Calling a method of child widget from a parent widget is discouraged in Flutter. Instead, Flutter encourages you to pass down the state of a child as constructor parameters. Instead of calling a method of the child, you just call setState in the parent widget to update its children .25 Haz 2018

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