Bacancy Technology

Bacancy Technology represents the connected world, offering innovative and customer-centric information technology experiences, enabling Enterprises, Associates and the Society to Rise™.

12+

Countries where we have happy customers

1050+

Agile enabled employees

World wide offices

12+

Years of Experience

Agile Coaches

Certified Scrum Masters

1000+

Clients projects

1458

Happy customers

Flutter

July 31, 2023

The Method ‘setState’ isn’t Defined for the Class MyApp Error in Flutter

If you want to use setState then you should use StatefulWidget instead of a StatelessWidget, I am assuming you are trying to setState on a stateless widget.

Below is the example to explain you how to use setState with stateful widget:

class HomePage extends StatefulWidget {
 const HomePage({Key? key}) : super(key: key);

 @override
 State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
 int incrementValue = 0;

 @override
 Widget build(BuildContext context) {
   return Scaffold(
       backgroundColor: Colors.white,
       body: InkWell(
         onTap: () {
           setState(() {
             //write code here
             incrementValue++;
           });
         },
         child: Text("Press Here $incrementValue"),
       ));
 }
}