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플루터 future란 이름에서 볼 수 있듯이, "나중에" 입니다. 그러니깐 여기에 비동기로 값이 들어오는데, 값이 들어올 수도 있고 안 들어올 수도 있을 때 Future를 씁니다.

https://api.flutter.dev/flutter/material/Icons-class.html Icons class - material library - Dart API Identifiers for the supported material design icons. Use with the Icon class to show specific icons. Icons are identified by their name as listed below. To use this class, make sure you set uses-material-design: true in your project's pubspec.yaml file in api.flutter.dev 플루터에서 아래와 같이 아이콘들을 제공합니다.

import 'package:flutter/material.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { // This widget is the root of your application. @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', theme: ThemeData( // This is the theme of your application. // // Try running your application with "flutter run". You'll see the // application has a..

플루터 hello world 할려고 하면 갑자기 이런 에러가 날 때가 있습니다. Error: ADB exited with exit code 1 Performing Streamed Install adb: failed to install /Users/himchanyoon/AndroidStudioProjects/flutter_app124124/build/app/outputs/apk/app.apk: Failure [INSTALL_FAILED_INSUFFICIENT_STORAGE] Error launching application on Android SDK built for x86. 그냥 쿨하게 새롭게 에뮬레이터 하나 새롭게 띄우면 됩니다. 끝.

import 'package:flutter/material.dart'; import 'package:flutterapptab/bottom_bar.dart'; import 'package:flutterapptab/home_screen.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { // This widget is the root of your application. @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', theme: ThemeData( // This is the theme of your applic..

import 'dart:math'; import 'package:flutter/material.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { // This widget is the root of your application. @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', theme: ThemeData( // This is the theme of your application. // // Try running your application with "flutter run". You'll see the ..

import 'package:flutter/material.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { // This widget is the root of your application. @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', theme: ThemeData( // This is the theme of your application. // // Try running your application with "flutter run". You'll see the // application has a..

import 'package:flutter/material.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { // This widget is the root of your application. @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', theme: ThemeData( // This is the theme of your application. // // Try running your application with "flutter run". You'll see the // application has a..

플루터에서 Stateful 과 Stateless 위젯을 쓸 때가 있습니다. 이 2개가 다른데 용도에 따라서 보면 Stateful = 사용자와 상호작용을 학는 것(ex 체크박스) Stateless = 사용자와 상호작용을 하지 않는 것(ex 텍스트) 라고 하면 되는데 왜 나눠놨는지 보면은 이 친구들의 lifecycle이 다릅니다. 참조 https://progdev.tistory.com/18