vlasentiy

import 'package:flutter/material.dart';

void main() =>
    runApp(MaterialApp(home: Scaffold(body: Center(child: MyWidget()))));

Future<String> callAsyncFetch() =>
    Future.delayed(Duration(seconds: 3), () => "hi bro !");

class MyWidget extends StatelessWidget {
  @override

vlasentiy

import 'package:flutter/material.dart';

void main() =>
    runApp(MaterialApp(home: Scaffold(body: Center(child: MyWidget()))));

Future<String> callAsyncFetch() =>
    Future.delayed(Duration(seconds: 3), () => "hi bro !");


class MyWidget extends StatelessWidget {

vlasentiy

import 'package:flutter/material.dart';

void main() =>
    runApp(MaterialApp(home: Scaffold(body: Center(child: MyWidget()))));

Future<String> callAsyncFetch() =>
    Future.delayed(Duration(seconds: 3), () => "hi bro !");


class MyWidget extends StatelessWidget {

vlasentiy

// FutureBuilder *is* a stateful widget
class FutureBuilder<T> extends StatefulWidget {
  
  // it takes in a `future` and a `builder`
  const FutureBuilder({
    this.future,
    this.builder
  });

  final Future<T> future;

vlasentiy

import 'package:flutter/material.dart';

main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(context) {
    return StreamBuilder<void>(

vlasentiy

class MyWidget extends StatelessWidget {
  // Future<String> callAsyncFetch() => Future.delayed(Duration(seconds: 3), () => "hi bro");
  @override
  Widget build(BuildContext context) {
    // print('building widget');
    return FutureProvider<String>(
      create: (_) {
        // print('calling future');
        return callAsyncFetch();
      },

vlasentiy

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) {