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I've just upgraded Flutter from 2.2 to 2.5, but my web app is behaving differently. In 2.2 it was possible to scroll vertically in a SingleChildScrollView and horizontally in a TabBarView by dragging without additional code. Dragging doesn't do anything now.

I would like to revert to the original behaviour from 2.2. Dragging should scroll vertically and horizontally.

However, adding different ScrollPhysics to those two widgets does not have any effect. I have found solutions that recommend wrapping the widget in a GestureDetector. This leads to a lot boilerplate code. Is there any other way to do it?

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  • You can revert back to the previous version of Flutter. Commented Sep 13, 2021 at 21:00
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    @Apealed Reverting to an old version forever is not a good idea. You would miss any future optimization and security updates. Commented Sep 18, 2021 at 11:59

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Flutter 2.5 Summary

ScrollBehaviors now allow or disallow drag scrolling from specified PointerDeviceKinds. ScrollBehavior.dragDevices, by default, allows scrolling widgets to be dragged by all PointerDeviceKinds except for PointerDeviceKind.mouse.

// Set ScrollBehavior for an entire application. MaterialApp( scrollBehavior: MyCustomScrollBehavior(), // ... ); 
class MyCustomScrollBehavior extends MaterialScrollBehavior { // Override behavior methods and getters like dragDevices @override Set<PointerDeviceKind> get dragDevices => { PointerDeviceKind.touch, PointerDeviceKind.mouse, }; }

Referrence: Documentation

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