Tag: What is the main purpose of setState () method call?

The State object consists of values that can change. The State object contains its associated widget’s ‘mutable state . ‘ — it stores values that can change over time. When those values have changed, more often than not, the associated StatefulWidget is re-created.

Calling setState notifies the framework that the internal state of this object has changed in a way that might impact the user interface in this subtree, which causes the framework to schedule a build for this State object.

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).