Flicking the system back gesture in Nav Compose does not do any animation [327292110]

Fixed

Bug

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Description

jb...@google.com

created issue #1

Feb 28, 2024 04:11AM

Now that predictive back is supported in Navigation Compose you can seek your transition and see the previous destination on the Navigation back stack.

While the seeking works great when you hold the gesture, if you do a flick, the transition does a cut instead of animating the custom transition from the current point.

https://issuetracker.google.com/325998468 pointed this out and regular system back was addressed there. It is likely we may need some type of `seekToTarget()` from `compose.transition` to help this case.

Comments

jb...@google.com <jb...@google.com> Mar 25, 2024 03:33PM

Assigned to jb...@google.com.

ap...@google.com <ap...@google.com> #2Mar 25, 2024 09:38PM

seems to be dup: b/212982460

jb...@google.com <jb...@google.com> #3Mar 26, 2024 10:11PM

Marked as fixed.

Fundamentally the issue here is that the selection logic happening in composition depends on the text layout result which is available on measure. So we end up using stale TextLayoutResult which causes the issue.

jb...@google.com <jb...@google.com> #4Mar 26, 2024 10:13PM

This is the same exception as in b/229378536 and b/221580975 as well, and it also involves selection, so I'm wondering if those two bugs have the same cause Anastasia described.

Issue 327292110

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Comments

jb...@google.com <jb...@google.com> Mar 25, 2024 03:33PM

ap...@google.com <ap...@google.com> #2Mar 25, 2024 09:38PM

jb...@google.com <jb...@google.com> #3Mar 26, 2024 10:11PM

jb...@google.com <jb...@google.com> #4Mar 26, 2024 10:13PM

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