Basic Floop example

example.dart

class Clicker extends StatelessWidget with Floop {
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Opacity(
          // opacity goes from 0 to 1 in two seconds
          opacity: transition(2000),
          // Text always displays the current value of floop[#clicks].
          child: Text('${floop[#clicks]}'),
        )
      ),
      floatingActionButton: FloatingActionButton(
        child: Icon(Icons.add),
        onPressed: () {
          floop[#clicks]++;
          // Restarts the opacity transition.
          TransitionGroup(context: context).restart();
        }),
      ),
    );
  }
}