Flutter – Futurebuilder

import 'package:flutter/material.dart';

class FuturebuilderTest extends StatelessWidget {
  String data;

  Future myFuture() async {
    data = "External";
    await Future.delayed(Duration(seconds: 2));

    /* If we return data from the future, the snapshot will recieve data
    return "This is snapshot data";
    */
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        margin: EdgeInsets.all(20),
        child: FutureBuilder(
            future: myFuture(),
            builder: (context, snapshot) {
              switch (snapshot.connectionState) {
                case ConnectionState.done:
                  {
                    if (snapshot.hasData) {
                      return Text('Done(snapshot=${snapshot.data})');
                    } else if (snapshot.hasError) {
                      return Text('Future error');
                    } else {
                      return Text('Done(no-snapshot, data=$data)');
                    }
                  }
                  break;
                case ConnectionState.waiting:
                  {
                    return Center(
                      child: CircularProgressIndicator(),
                    );
                  }
                  break;
                default:
                  {
                    return Text('Undefined');
                  }
              }
            }),
      ),
    );
  }
}

FutureBuilder(
        future: Future.wait([
          context.read<Searching>().getSomeData1(),
          context.read<Searching>().getSomeData2(),
        ]),
        builder: (context, AsyncSnapshot<List<dynamic>> dataSnapshot) {
          if (dataSnapshot.connectionState == ConnectionState.waiting) {
            return Center(
               child: CircularProgressIndicator(),
            );
          } else {
            if (dataSnapshot.hasError) {
              return Center(
                child: Text('Future error: ${dataSnapshot.error}'),
              );
            } else {
              print(dataSnapshot.data![0]);
              print(dataSnapshot.data![1]);
              return Text('OK');
            }
          }
        },
      ),