What's new in Flutter 1.9

GDG Devfest Mobile day, Bangkok 2019

Transcript

1. What’s new in Flutter 1.9
2. GDD China September, 2019 @Shanghai, China
3. Flutter 1.9 (Stable)
4. 1.9.1+hotfix.4
5. Flutter for Web
9. $ flutter channel master $ flutter upgrade $ flutter config --enable-web
10. $ flutter devices 1 connected devices: Chrome • chrome • web-javascript • Google Chrome 70.0.3538.67
11. $ flutter run -d chrome
12. *tech preview*
13. Language supports
14. New 24 languages https://developers.googleblog.com/2019/09/flutter-news-from-gdd-china-flutter1.9.html
15. iOS 13 & Catalina
16. iOS 13
17. CupertinoSwitch (UISwitch)
18. Before After
19. iOS 13 Scroll bar
23. Bitcode enabled app (experimental)
25. Material
26. ToggleButtons
29. ColorFiltered
32. SelectableText
34. Toolchain improvements
35. Swift & Kotlin
36. Dart 2.5
37. ML Completion (preview)
38. Before After https://medium.com/dartlang/announcing-dart-2-5-super-charged-development-328822024970
39. https://medium.com/dartlang/announcing-dart-2-5-super-charged-development-328822024970
40. { "dart.analyzerAdditionalArgs": ["--enable-completion-model"], "editor.suggestSelection": "first" } VS Code Registry set dart.server.additional.arguments to --enable-completion-model IntelliJ, AS
41. dart:ffi (preview)
42. C-based OS APIs // C header: int system(const char *command) in stdlib.h
43. C-based OS APIs // C header: int system(const char *command) in stdlib.h // C header typedef: typedef SystemC = ffi.Int32 Function(ffi.Pointer<Utf8> command); // Dart header typedef: typedef SystemDart = int Function(ffi.Pointer<Utf8> command);
44. C-based OS APIs // C header: int system(const char *command) in stdlib.h // C header typedef: typedef SystemC = ffi.Int32 Function(ffi.Pointer<Utf8> command); // Dart header typedef: typedef SystemDart = int Function(ffi.Pointer<Utf8> command); // Load `stdlib`. On macOS this is in libSystem.dylib. final dylib = ffi.DynamicLibrary.open('/usr/lib/libSystem.dylib'); // Look up the system function. final systemP = dylib.lookupFunction<SystemC, SystemDart>('system');
45. C-based OS APIs // Allocate a pointer to a Utf8 array containing our command. final cmdP = Utf8.toUtf8('open https://www.google.com'); // Invoke the command. systemP(cmdP); // Free the pointer. cmdP.free();
46. C-based frameworks ????????? https://medium.com/rta902/confused-nick-young-b67a18e21657
47. ML Completion
48. const improvements
49. const Object i = 3; const list = [i as int]; const set = {if (list is List<int>) ...list}; const map = {if (i is int) i: "int"};
50. Showcase
51. https://flutter.dev/showcase
53. https://flutter-widget-livebook.blankapp.org
54. One more thing
55. Flutter Study Jam TH 2019 Open for registration: http://bit.ly/2oAaqw5 • Free • Half-day workshop • Limited seats
56. FB Group : Thailand Flutter Developer