I am developing a master/detail app, with a `LazyColumnFor` showing a list of items on the master sc...

# compose

[Daniele B]

I am developing a master/detail app, with a LazyColumnFor showing a list of items on the master screen. When click on an item to access the detail screen, and then I come back to the master screen, the position of the list is not kept. It is always reset to the top.
Is there a way to keep the position of the LazyColumnFor ?

[Adam Powell]

@Andrey Kulikov may be able to give more details on how to work with state save/restore when navigating around like that

[Timo Drick]

As far as i know this is not supported yet. At least not in alpha02. I do not see any savedInstanceState position saving in code.

[Timo Drick]

Maybe in the next release?

[Andrey Kulikov]

yes, it is not supported yet. but soon we will 1) save/restore LazyColumFoR scroll position 2) have a navigation library integration with saving and restoring the state for the backstack

[Daniele B]

@Andrey Kulikov thanks! any idea for how long. It’s more about 1 week or more about 1 month or more?

[Andrey Kulikov]

hard to say exactly, but more of a month

[Timo Drick]

@Daniele B i did implemented a custom solution which i am using until official API is ready for use. It is a small navigation framework including transition animation support and since yesterday also Save/Restore SavedInstanceState data. And also a Custom LazyColumnFor implementation that supports saving scroll position (LayoutList). If you want you can have a look.
https://gitlab.com/timod/compose-playground

[Timo Drick]

https://kotlinlang.slack.com/files/URMNPDGN8/F019YHL4HLJ/device-2020-09-02-152809.mp4

device-2020-09-02-152809.mp4

[Timo Drick]

Unfortunately there is no documentation 😄 but just ask me if you want to use it and have questions.