IssueTracker

Thanks for taking this up! I just wanted to note that there is also a somewhat related ticket I created: https://issuetracker.google.com/issues/261314581

Project: platform/frameworks/support
Branch: androidx-main

commit 5d0416cba55005bed8347353ff8575c43181ce33
Author: sanura <sanura@google.com>
Date:   Thu Dec 08 21:45:50 2022

    Have ComponentDialog implement SavedStateRegistryOwner
   
    Having ComponentDialog implement SavedStateRegistryOwner
    to aid developers in using Jetpack Compose, which requires
    components to be both a LifecycleOwner and
    a SavedStateRegistryOwner.
   
    RelNote: "`ComponentDialog` is now also a
    `SavedStateRegistryOwner` and has access
    to its own `SavedStateRegistry`."
    Bug: 261162296
    Test: ComponentDialogTest.savedState()
   
    Change-Id: Idca172600df720d8b724e8bc6971b0d933864253

M       activity/activity/api/current.txt
M       activity/activity/api/public_plus_experimental_current.txt
M       activity/activity/api/restricted_current.txt
M       activity/activity/src/androidTest/java/androidx/activity/ComponentActivitySavedStateTest.kt
M       activity/activity/src/androidTest/java/androidx/activity/ComponentDialogTest.kt
M       activity/activity/src/main/java/androidx/activity/ComponentDialog.kt

https://android-review.googlesource.com/2336525

Project: platform/frameworks/support
Branch: androidx-main

commit ef85e7e7f4e5742d9668f98c15be6b214b00e6f9
Author: sanura <sanura@google.com>
Date:   Wed Jan 04 00:00:32 2023

    Have ComponentDialog also set ViewTreeSavedStateRegistryOwner
   
    Now that ComponentDialog is a SavedStateRegistryOwner,
    it should also set it during its ViewTree initialization.
   
    RelNote: "`ComponentDialog` now also sets the
    `SavedStateRegistryOwner` for its ViewTree."
    Bug: 261162296
    Test: testViewTreeSavedStateRegistryOwner
   
    Change-Id: I7346856b333933e03f5d3b0d380f5122b4856908

M       activity/activity/src/androidTest/java/androidx/activity/ComponentDialogTest.kt
M       activity/activity/src/main/java/androidx/activity/ComponentDialog.kt

https://android-review.googlesource.com/2374989

Great to see the progress on this! Just curious, in the other bug I linked I noted that AppcompatDialog which inherits from ComponentDialog doesn't call some methods on super which would trigger this new code, instead AppcompatDialog calls some delegate methods which don't reach ComponentDialog. Will that be addressed as well?

Ah dang I am not a google employee so can't see that bug.