Flutter is an open source framework by Google for building beautiful, natively compiled, multi-platform applications from a single codebase. https://flutter.dev/ What’s Flutter Intro 12
1. Custom asset transformers, because they enable some performance improvements. 2. Efficient 2D scrolling widgets (e.g. tables and trees), to improve the performance of applications with this kind of interface. 3. Multiple windows, especially for desktop platforms, because this is a very highly requested feature. 4. Platform Views on macOS and Windows, by popular demand. 5. Drag and drop, also by popular demand. 6. Wireless debugging on iOS, our second-most-requested feature. 7. Custom "flutter create" templates, which makes it much easier for third-parties (e.g. the Flame engine) to bootstrap developers. 8. Supporting element embedding (see also #32329), which allows Flutter content to be added to any standard web , by popular demand. Engineering Roadmap Features Intro 15
I/O FLIP 18 An AI-designed card game powered by Google, built for Google I/O 2023 ● https://flip.withgoogle.com/#/ ● https://github.com/flutter/io_flip
Learn the latest from Dart and Flutter, including how they enable you to build beautiful native apps for any platform. This session covers breakthrough graphics performance, seamless integration, emerging architectures and platforms, and developer experience. What's new in Dart and Flutter Section 01 20
Material 3 지원 확대 연관 세션 1. What’s New in Material Design 2. Design for every device with Flutter and Material 3 100% Sound null safety New : Patterns New: Class modifiers Material 3 Dart 3 UI Upgraded to use Material 3 Trace Viewer based on Perfetto DevTools 01 02 03 Section 01 23 What's new in Dart and Flutter 📌 Section Pick 📌 Section Pick
OrbShader Custom Shader GLSL 연관 세션 Building next-gen UIs in Flutter Breakthrough graphics performance. New Rendering Engine Production ready for iOS 연관 세션 Tour of Impeller - Flutter's new rendering engine Fragment Shaders for Web Impeller Flutter Web Wasm (WebAssembly) 연관 세션 Evolving Flutter's support for the web Wasm 04 05 06 Section 01 24 What's new in Dart and Flutter
Dart 3 - The road to Dart3 Section 01 25 What's new in Dart and Flutter ● ✅ Around January/February 2023: Dart 3 alpha released. ● ✅ Around March/April 2023: Dart 3 beta released. ○ This release previews the new features in Dart 3. ● ✅ Around mid 2023: Dart 3 stable released. ○ Sound null safety becomes the only supported mode.
Dart 3 Section 01 26 What's new in Dart and Flutter ● 100% Sound Null Safety ○ Reduce run-time errors from nulls ○ Smaller compiled output ○ Improved performance ● New Patterns → Modern programming ○ Structured data with records ○ Pattern matching ● New Class Modifiers
Dart 3 Section 01 27 What's new in Dart and Flutter ● 100% Sound Null Safety ○ Null Safety는 Dart 2.12 버전때 소개되어 약 2년정도 시간 경과 ○ dart migrate tool 제거 → SDK 2.19 사용하여 migrate 수행 필요
Dart 3 Section 01 28 What's new in Dart and Flutter ● New: Records & Patterns ○ Records는 Dart SDK 3.0 버전에 새로 적용된 Type ○ Pattern은 Dart 언어의 a syntactic category ■ statements and expressions ■ match a value, destructure a value New Feature
Dart 3 Section 01 29 What's new in Dart and Flutter ● What are Records ○ First-class : Store in variables, return from functions ■ 변수를 저장하고, 함수로부터 값을 반환, 제네릭 타입 사용 ○ Objects: Subtype of Record which extends Object ○ Value semantics: Automatic == and hashCode ○ Optimizable: No persistent identity → Compiler can optimize away
var io23BusanSpeaker = {'name': "Dreamwalker", "part": "Flutter", "track": 2}; IO23Busan speakerInfo(Map json) { return IO23Busan( json['name'] as String, json["part"] as String, json['track'] as int, ); } var info = speakerInfo(io23BusanSpeaker); var name = info.name; var part = info.part; var track = info.track; 33
(String, String, int) speakerInfo(Map json) { return ( json['name'] as String, json["part"] as String, json['track'] as int, ); } var info = speakerInfo(io23BusanSpeaker); var name = info.$1; var part = info.$2; var track = info.$3; 34
// method 1 var record = ('first', a: 2, b: true, 'last'); // method 2 (int x, int y, int z) point = (1, 2, 3); // method 3 ({int x, int y, int z}) point = (x: 1, y: 2, z: 3); 35
// pattern // Before var info = speakerInfo(io23BusanSpeaker); // Pattern var (name, part, track) = speakerInfo(io23BusanSpeaker); // Pattern var (name, _, track) = speakerInfo(io23BusanSpeaker); 36
// Pattern - Destructuring // Before var json = { 'user': ['Dreamwalker', "Flutter", 2] }; var name = json['user']?[0]; var track = json['track']?[1]; 37
sealed class Burger {} class CheeseBurger extends Burger { final int count; CheeseBurger(this.count); } class DoubleCheeseBurger extends Burger { final int count; DoubleCheeseBurger(this.count); } int calculateCheese(Burger burger) => switch (burger) { CheeseBurger(count: int c) => 1 * c, DoubleCheeseBurger(count: int c) => 1 * c, }; 42
Dart 3 Section 01 45 What's new in Dart and Flutter 다양한 조합.. ○ abstract ○ base ○ final ○ interface ○ sealed ○ mixin Declaration Construct? Extend? Implement? Mix in? Exhaustive? class Yes Yes Yes No No base class Yes Yes No No No interface class Yes No Yes No No final class Yes No No No No sealed class No No No No Yes abstract class No Yes Yes No No abstract base class No Yes No No No abstract interface class No No Yes No No abstract final class No No No No No mixin class Yes Yes Yes Yes No base mixin class Yes Yes No Yes No abstract mixin class No Yes Yes Yes No abstract base mixin class No Yes No Yes No mixin No No Yes Yes No base mixin No No No Yes No
Material 3 brings new widgets to help create beautiful designs for every device that Flutter supports. Layouts can be quite different depending on the platform they are running on and what input devices are currently active. Deep dive into the various ways you can create with adaptive layouts, expressive color and typography, and theming the many widgets available for Material 3. Theming does not have to be hard when a design can be broken down into reusable widgets. Design for every device with Flutter and Material 3 Section 02 47
Section 02 52 Flutter and Material 3 Making Material 3 the default 2023-07-13 기준 Master channel: 현재 적용 완료 Beta 채널: 8월 중 적용 (현재 적용된것으로 보임) Stable 채널: beta 채널 적용 이후 https://github.com/flutter/flutter/issues/127064 Access: 2023-07-22
Firebase provides you with APIs and tools to build, release, and operate full-stack apps for many platforms, including Flutter. In this session you will learn about the latest improvements that we made and what we’re working on for the future. What's new in Firebase's Flutter Section 03 61
● For Cloud and Firebase, that means offering packages like FlutterFire that make it easy to complement Flutter apps with our cloud backend, as well as documentation and guidance for hosting Dart in the cloud. It includes supporting Cloud account teams who are selling full-stack solutions to their customers. ● For Android, we help customers “shift left”: giving iOS developers a path to build on a supported Google stack that also targets Android. This also includes the sizable revenue stream we are building for in-app purchases with Play. In 2023, we will continue to enthusiastically build pathways to help developers light up on Android, in collaboration with the Android team. ● For Ads, we continue to partner on breadth opportunities, with first-party support for a broad set of mobile ads formats, targeted campaigns around casual gaming, and product investments around deep-linking. In 2023, we will broadly roll out our work with news publishers to offer a custom toolkit that incorporates ads and Firebase. ● For Geo, we will partner with them to grow our maps plugin, including adding support for client-side directions, and integration into the Google Maps developer docs. Flutter as an on-ramp for Google Section 03 62 Source: Flutter 2023 Strategy What's new in Firebase's Flutter Strategy
Platform Support Section 03 65 What's new in Firebase's Flutter ● FlutterFire CLI 업데이트 ● Firbase support for windows development workflows ● C++ ● Desktop Support
Flutter’s new rendering engine was developed with the goal of eliminating shader compilation jank and providing predictable performance. This talk will discuss the design of Impeller and how it fits into the broader architecture for Flutter. This includes a tour of Impeller’s sub frameworks, and a demonstration of how lower level APIs are used in Flutter applications. The session will also discuss how Impeller enables new experiences, like 3D support. Flutter's new rendering engine Section 04 67
Section 04 71 Flutter's new rendering engine What’s Jank? ● Slow Frame ● FPS (Frame per second ) = 초당 프레임 수 ● 60 FPS 는 1초에 60 개의 프레임을 출력 ● 1개의 프레임을 렌더링하는데 걸리는 속도는? ○ 16ms 내외로 처리가 가능해야함 60fps의 경우 16ms 내로 처리하는지 못하는 경우 중간 중간 프레임 처리를 놓치는 경우 UI Jank, 프레임 드롭
Section 04 73 Flutter's new rendering engine My app sits on the splash screen for about 6 seconds on first launch, which is a really poor first impression for my users.
Skia’s shader generation and compilation happens in sequence with the frame workload. Impeller generates and compiles all necessary shaders when we build the Flutter Engine. Therefore apps running on Impeller already have all the shaders they need, and the shaders can be used without introducing jank into animations. Skia Impeller What’s Shader Compilation Jank? Section # 74 Flutter's new rendering engine
Impeller Section 04 75 Flutter's new rendering engine ● A rendering engine for Flutter. ● Replaces Skia in Flutter Engine. Impeller available by default on iOS
Impeller Section 04 77 Flutter's new rendering engine Per Vertex Shader Per pixel Shader o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o
o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o Impeller Section 04 78 Flutter's new rendering engine o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o
Flutter apps on the web are loading faster and have better integration with HTML in the latest release. We will also be sharing our progress on compiling Flutter web apps to WebAssembly. Evolving Flutter's support for the web Section 05 82
1. Enable "hot reload" (not just "hot restart") for Flutter Web #53041 2. Improve the indexability (SEO) of Flutter apps on the web (#46789) 3. Server-side rendering for Flutter web (#47600) 4. main.dart.js is too large #46589 Flutter for the Web Section 05 83 ● Flutter as the first of a new breed of frameworks that target WebGL and Wasm and leave HTML behind. ● Flutter for web, as currently designed, is fundamentally a client-side technology. ● Dart is compiled to JS (or maybe one day Wasm, we're looking into that in the coming year).
1. Compress canvasKit size 2. Compress font size 3. Element Embedding 4. WASM(WebAssembly) 5. Fragment Shaders for Web Flutter for the Web Section 05 84
jaichang@PARKui-MacBookPro untitled1 % flutter build web --release Font asset "CupertinoIcons.ttf" was tree-shaken, reducing it from 283452 to 1272 bytes (99.6% reduction). Tree-shaking can be disabled by providing the --no-tree-shake-icons flag when building your app. Font asset "MaterialIcons-Regular.otf" was tree-shaken, reducing it from 1645184 to 7652 bytes (99.5% reduction). Tree-shaking can be disabled by providing the --no-tree-shake-icons flag when building your app. 87
Fragment Shaders for the Web Section 05 95 https://codelabs.developers.google.com/codelabs/flutter-nex t-gen-uis?hl=ko#0 Shader Support Evolving Flutter's support for the web
Learn how Flutter on the Raspberry Pi enables makers to build exciting new embedded user interfaces. The Raspberry Pi was introduced as a tool to teach computer science, but since its introduction has been a staple in every maker’s toolbox. It’s been used as the basis for maker projects such as IoT devices, game emulators, and kiosks. So this is the answer to "What would a Flutter & Raspberry Pi game console look like?" Flutter, Dart, and Raspberry Pi Section 06 97
Section 07 116 Release SDK 3.13 Release 3.13 Stable New support targets Flutter now supports targeting Android 14/ API 34. While we are still working on a few new features in Android 14 (i.e. predictive back navigation), Preparing for iOS 17 and Xcode 15 With the impending release of iOS 17 and Xcode 15, users who desire to develop using this toolchain will need to be on Flutter 3.13. In addition, when downloading Xcode 15, make sure you also download the iOS 17 simulator. Stable
1. 🤔 Custom asset transformers, because they enable some performance improvements. 2. ✅ Efficient 2D scrolling widgets (e.g. tables and trees), to improve the performance of applications with this kind of interface. 3. ✅ Multiple windows, especially for desktop platforms, because this is a very highly requested feature. 4. 🤔 Platform Views on macOS and Windows, by popular demand. 5. 🤔 Drag and drop, also by popular demand. 6. ✅ Wireless debugging on iOS, our second-most-requested feature. 7. 🤔 Custom "flutter create" templates, which makes it much easier for third-parties (e.g. the Flame engine) to bootstrap developers. 8. ✅ Supporting element embedding (see also #32329), which allows Flutter content to be added to any standard web , by popular demand. Engineering Roadmap Features Summary 127
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