StatefulWidgetState Explained | Flutter for Android Developers

What’s StatefulWidgetState?

The State class is an abstract class in Flutter that holds the logic and internal state for a StatefulWidget.

Check the official documentation for more.

StatefulWidgetState explained for Android Developers

State is information that can be read synchronously when the widget is built and might change during the widget’s lifetime. The widget implementer must ensure that the State is notified of changes using the setState method. This is somewhat similar to how Android developers manage UI state using ViewModels and LiveData, where changes in data trigger UI updates.

Example Code

Here is an example of how to use StatefulWidgetState:

class MyWidget extends StatefulWidget {
  @override
  MyWidgetState createState() => MyWidgetState();
}

class MyWidgetState extends State<MyWidget> {
  int counter = 0;

  void incrementCounter() {
    setState(() {
      counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Text('Counter: $counter');
  }
}