What's new in flutter and dart in 2020

Nov 13, 20204 likes698 views

Ahmed Abu Eldahab

In this session I talked about Flutter 1.77 & 1.20 & 1.22 releases also Dart 2.8 & Dart 2.9 and Dart 2.10

Ahmed Abu Eldahab
Google Developer Expert in Flutter & Dart
Senior Technical Consultant
Kortobaa LLC CTO
/Dahabdev

Flutter is Google’s UI toolkit
for building beautiful,
natively compiled
applications for mobile, web,
and desktop from a single
codebase

https://flutter.dev/docs/whats-new

https://github.com/flutter/flutter/wiki/Flutter-build-release-channels
New Release Process
- Flutter and Dart release processes and
channels are now aligned
- Non-stable release versions will be
annotated with .pre
- once a quarter, beta will be pushed to
stable channel
Flutter 1.17

Performance Improvement
- 20%-37% speedup for the default navigation
- a 70% memory reduction in fast scrolling
through large images,
- App size improvement
https://github.com/flutter/flutter/wiki/Metal-on-iOS-FAQ
Flutter 1.17

Metal support on iOS
- From iOS 12 Metal is the recommended API
- Flutter Metal support improves performance
by 50% on iOS
- When Metal cannot be used, OpenGL will be
used instead
https://github.com/flutter/flutter/wiki/Metal-on-iOS-FAQ
Flutter 1.17

Dart 2.8
- Flutter create decreased from 6.5 seconds
in Flutter 1.12 to 2.5 seconds in Flutter
1.17.
- Managing dependencies with Flutter pub
outdated
https://medium.com/dartlang/announcing-dart-2-8-7750918db0a
Flutter 1.17

New Material widgets
https://medium.com/flutter/announcing-flutter-1-17-4182d8af7f8e
Flutter 1.17
Navigation Rail DatePicker

New Animations Package
https://pub.dev/packages/animations
Flutter 1.17

Modernizing Flutter Text Theming
https://material.io/design/typography/the-type-system.html#type-scale
Flutter 1.17

Google Fonts for Flutter
https://pub.dev/packages/google_fonts
Flutter 1.17

New Network Tab
https://medium.com/flutter/announcing-flutter-1-17-4182d8af7f8e
Flutter 1.17

https://flutter.dev/docs/whats-new
Flutter 1.20

Dev Tools in VS Code Flutter 1.20
https://dartcode.org/releases/

Auto Import - VS Code Flutter 1.20
https://dartcode.org/releases/

New visual appeals
Slider - RangeSlider - DatePicker - TimePicker
Flutter 1.20

Interactive Viewer - drag n’ drop widgets
Flutter 1.20

Pigeon
https://pub.dev/packages/pigeon
Flutter 1.20

Performance improvement
Icon & fonts tree shaking
Flutter 1.20

https://flutter.dev/docs/whats-new
Flutter 1.22

Flutter 1.22
Android 11 better animation

Flutter 1.22
https://flutter.dev/docs/development/ios-14
ios 14 support

Flutter 1.22
Google Maps and
WebView plugins ready
for production

Flutter 1.22
Expanding the Button “universe”

Flutter 1.22
App size analysis tool
--analyze-size
- flutter build apk
- flutter build appbundle
- flutter build ios
- flutter build linux
- flutter build macos
- flutter build windows

Google Pay picks Flutter
to drive its global
product development

Google Pay picks Flutter to
drive its global product
development
now available in open beta
in India and Singapore

https://firebase.flutter.dev/

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Flutter is Google's mobile app SDK for building high-performance, cross-platform applications. It uses Dart as its programming language. Flutter compiles code to native ARM machine code rather than using an intermediary language. This allows Flutter apps to have native performance. Flutter provides a rich set of widgets that can be customized and combined to build user interfaces. Everything in Flutter is represented as a widget, allowing for great flexibility and customization of UIs. Flutter also supports features like hot reload that improve developer productivity.

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This presentation explores code comprehension challenges in scientific programming based on a survey of 57 research scientists. It reveals that 57.9% of scientists have no formal training in writing readable code. Key findings highlight a "documentation paradox" where documentation is both the most common readability practice and the biggest challenge scientists face. The study identifies critical issues with naming conventions and code organization, noting that 100% of scientists agree readable code is essential for reproducible research. The research concludes with four key recommendations: expanding programming education for scientists, conducting targeted research on scientific code quality, developing specialized tools, and establishing clearer documentation guidelines for scientific software. Presented at: The 33rd International Conference on Program Comprehension (ICPC '25) Date of Conference: April 2025 Conference Location: Ottawa, Ontario, Canada Preprint: https://arxiv.org/abs/2501.10037

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What's new in flutter and dart in 2020

1. Ahmed Abu Eldahab GDE Flutter & Dart @dahabdev What's new in Flutter and Dart

2. Ahmed Abu Eldahab Google Developer Expert in Flutter & Dart Senior Technical Consultant Kortobaa LLC CTO /Dahabdev

3. bit.ly/dahab-youtube

4. Flutter is Google’s UI toolkit for building beautiful, natively compiled applications for mobile, web, and desktop from a single codebase

5. https://flutter.dev/docs/whats-new

6. https://flutter.dev/docs/whats-new

7. https://github.com/flutter/flutter/wiki/Flutter-build-release-channels New Release Process - Flutter and Dart release processes and channels are now aligned - Non-stable release versions will be annotated with .pre - once a quarter, beta will be pushed to stable channel Flutter 1.17

8. Performance Improvement - 20%-37% speedup for the default navigation - a 70% memory reduction in fast scrolling through large images, - App size improvement https://github.com/flutter/flutter/wiki/Metal-on-iOS-FAQ Flutter 1.17

9. Metal support on iOS - From iOS 12 Metal is the recommended API - Flutter Metal support improves performance by 50% on iOS - When Metal cannot be used, OpenGL will be used instead https://github.com/flutter/flutter/wiki/Metal-on-iOS-FAQ Flutter 1.17

10. Dart 2.8 - Flutter create decreased from 6.5 seconds in Flutter 1.12 to 2.5 seconds in Flutter 1.17. - Managing dependencies with Flutter pub outdated https://medium.com/dartlang/announcing-dart-2-8-7750918db0a Flutter 1.17

11. New Material widgets https://medium.com/flutter/announcing-flutter-1-17-4182d8af7f8e Flutter 1.17 Navigation Rail DatePicker

12. New Animations Package https://pub.dev/packages/animations Flutter 1.17

13. Modernizing Flutter Text Theming https://material.io/design/typography/the-type-system.html#type-scale Flutter 1.17

14. Google Fonts for Flutter https://pub.dev/packages/google_fonts Flutter 1.17

15. New Network Tab https://medium.com/flutter/announcing-flutter-1-17-4182d8af7f8e Flutter 1.17

16. https://flutter.dev/docs/whats-new Flutter 1.20

17. Dev Tools in VS Code Flutter 1.20 https://dartcode.org/releases/

18. Auto Import - VS Code Flutter 1.20 https://dartcode.org/releases/

19. Autofill Support Flutter 1.20

20. Mouse Cursor Support Flutter 1.20

21. New visual appeals Slider - RangeSlider - DatePicker - TimePicker Flutter 1.20

22. Interactive Viewer - drag n’ drop widgets Flutter 1.20

23. Pigeon https://pub.dev/packages/pigeon Flutter 1.20

24. Performance improvement Icon & fonts tree shaking Flutter 1.20

25. https://flutter.dev/docs/whats-new Flutter 1.22

26. Flutter 1.22 Android 11 better animation

27. Flutter 1.22 Android notches support

28. Flutter 1.22 https://flutter.dev/docs/development/ios-14 ios 14 support

29. Flutter 1.22 Google Maps and WebView plugins ready for production

30. Flutter 1.22 Expanding the Button “universe”

31. Flutter 1.22 Navigator 2.0

32. Flutter 1.22 Navigator 2.0

33. Flutter 1.22 Navigator 2.0

34. Flutter 1.22 Navigator 2.0

35. Flutter 1.22

36. Flutter 1.22 App size analysis tool --analyze-size - flutter build apk - flutter build appbundle - flutter build ios - flutter build linux - flutter build macos - flutter build windows

37. Flutter 1.22 App size analysis tool

38. Flutter 1.22 App size analysis tool

39. Google Pay picks Flutter to drive its global product development

40. Google Pay picks Flutter to drive its global product development now available in open beta in India and Singapore

41. Google Pay picks Flutter to drive its global product development now available in open beta in India and Singapore

42. https://firebase.flutter.dev/

43. https://firebase.flutter.dev/

44. Thanks

46. bit.ly/dahab-youtube

47. Ahmed Abu Eldahab Google Developer Expert in Flutter & Dart Senior Technical Consultant Kortobaa LLC CTO /Dahabdev