Flutter 1.9

Release Notes Flutter 1.9.1

https://github.com/flutter/flutter/wiki/Release-Notes-Flutter-1.9.1

https://developers.googleblog.com/2019/09/flutter-news-from-gdd-china-flutter1.9.html

New Features

new Material widgets:

• ToggleButtons widget (called a segmented control on iOS).

• ColorFilter widget (recolor an entire widget tree according).

macOS Catalina Support

I should note that you’ll want to upgrade to the Flutter 1.9.1 stable release before upgrading to Catalina. The other order works, too, but you’ll see an error when you do it that way (the error is benign, but still…).

iOS

• scrollbar implementation (that includes long-press, drag-from-right and vibration feedback support).
• an update to the CupertinoSwitch widget to match iOS 13 and continued experimentation with bitcode.

Android

new command: flutter build aar

This new build command works just like ‘flutter build apk’ or ‘flutter build appbundle’, but for plugins and module projects.

Framework

Update Localizations: added 24 new locales (reprise)

Toolchain Improvements

• new projects default to Swift instead of Objective-C and Kotlin instead of Java for iOS and Android projects respectively.
• improve Flutter’s error messages by making them more readable, more concise and more actionable.

Breaking API Changes

• 33281 (announcement) Update TextStyle and StrutStyle height docs
• 34019 (announcement) Selectable Text
• 34665 (announcement) Selection handles position is off
• 35110 (announcement) Always test semantics
• 35136 (announcement) Update Dark Theme disabledColor to White38
• 35785 (announcement) Remove reverseDuration from implicitly animated widgets, since it’s ignored.
• 36030 (announcement) [Material] Implement TooltipTheme and Tooltip.textStyle, fix Tooltip debugLabel, update Tooltip defaults
• 36106 (announcement) Updated ColorScheme.dark() colors to match the Material Dark theme specification
• 36217 (announcement) Split Mouse from Listener
• 36402 (announcement) Teach render objects to reuse engine layers
• 36856 (no announcement) [Material] Implement TooltipTheme and Tooltip.textStyle, update Tooltip defaults
• 36964 (announcement) Interactive size const
• 37338 (announcement) Update constructor APIs TooltipTheme, ToggleButtonsTheme, PopupMenuTheme
• 37341 (no announcement) hiding original hero after hero transition
• 37544 (announcement) Replace ButtonBar.bar method with ButtonBarTheme
• 37652 (announcement) Change RenderObject.getTransformTo to include ancestor.
• 37736 (announcement) Added a composable waitForCondition Driver/extension API