Widget get built twice

[sanuzzi]

Can you reopen this issue? #33566
Months ago there was another comment but the issue didn't reopened. And I just commented with another example. Can you take a look at it please?

[jonahwilliams]

Flutter does not guarantee Widget.build will be called the minimum number of times possible. You should structure your application in a way that assumes build will be called on every frame - anything less is an optimization.

[sanuzzi]

@jonahwilliams
Build on every frame is the same mistake that Unity have had for years. Please don't do the same.
I would like you to really focus on this:

Our other main goal is to improve Flutter's quality (...) and the development experience (1)

Also, your latest version mentions many performance improvements (2), I think this issue is align with that, for next releases.

[omerasif57]

In my case it is effecting the animation. My widget tree is slightly complex and build is called more than twice (sometimes). I am a bit naive to flutter so will try to investigate and restructure my code.
My usecase involves theme switching (dark-light) with timeDilation=3.0. Animation plugin works fine with a simple example code.

Anyway, any advise would be appreciated.

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.