How to use Isolates in #Flutter

#Flutter

Speaker: Eric Windmill
Products Mentioned: Flutter

[communityband]

Just read about some changes for the Flutter team. Your hard work has improved the lives of so many people in this community. Thank you so much to all who are affected in these changes. I hope that the transitions coming up go smoothly and find you awesome people in awesome new places.

[septilevg]

This just saved me. Thank you very much for everything

[happycat]

This is the second time I watched flutter isolate, I really love it, but I wish there are more common use case for this, the app I'm building, only thing I can think of to use isolate is process videos😢

[peachezprogramming]

so basically the same as android app dev "don't commute on the main UI thread"

[willcoder]

Isolates makes multi-core apps using Flutter really awesome. I'm curious: in addition to avoiding jank, does offloading that work onto a background core also improve battery life? It seems like using multiple cores _should_ have a net better energy draw than the same work being task-switched on a single core. If nothing else, doing more work in a shorter amount of time would at least save on screen-time, but ignoring that, is it more power efficient for just the CPU draw?

[daze]

What is the difference between this and async/await? This looks much simpler to implement.

[sitedel]

A simple "await" will unblock the UI but will create other corner use cases that you must take care of.

Don't forget to disable the button used to launch any heavy computation, then re-enable it only when the computation is done or failed

Be also very careful to manage all halt events like another application "stealing" the focus (standby, phone call, open from shortcut/notification...).by keeping the UI state in sync with application state on comeback.

[prince-sonawane]

what about it not running on web? can we have something for web has well???

[himanshuu]

So isolates are only useful if data is heavy?

[maran.ath]

Woah it's that easy? 😂 I always thought it'd be more complicated than that like establishing your own Receive and send ports and that..

so I always use compute which is jarring to use, top level functions and all that, and having to force arguments on functions that don't require any params

[Anjanyarsa]

cannot draw the dart ui image in canvas using it

[Thioby]

Yeaaahh... Do it on web. I dare you, do it on flutter web