HookWidget

HookWidget.dart

class MyWidget extends HookWidget {
  @override
  Widget build(BuildContext context) {
    final future = useMemoized(() {
      // Future<String> callAsyncFetch() => Future.delayed(Duration(seconds: 3), () => "hi bro");
      callAsyncFetch(); // or your own async function
    });
    return FutureBuilder<String>(
      future: future,
      builder: (context, snapshot) {
        return Text(snapshot.hasData ? snapshot.data : 'Loading...');
      }
    );
  }
}