FragmentTransaction fade animation issue [175417675]

Fixed

Bug

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Description

jp...@gmail.com

created issue #1

Dec 12, 2020 07:09PM

Components used: Fragment, AppCompat
Fragment version used: 1.3.0-beta02
AppCompat version used: 1.3.0-alpha02
Devices/Android versions reproduced on: API 28 (device), API 30 (emulator)

The following code is resulting in animation flickering:

supportFragmentManager.beginTransaction()
        .setCustomAnimations(android.R.anim.fade_in, android.R.anim.fade_out)
        .show(fragment2)
        .hide(fragment1)
        .commit()

This seems like a regression, as using Fragment 1.2.5 and AppCompat 1.2.0 works as expected.

This bug can be reproduced in the following test project and is only noticeable when fading from fragment2 to fragment1:

https://github.com/jpmcosta/AndroidTestProject/tree/52623ada2aa61f8d3c3857612003f02126585388

A screen record of the issue is also attached.

Thank you for taking a look into this issue.

issue_fragment_transaction_fade_animation.mp4

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Comments

il...@google.com <il...@google.com> Jan 8, 2021 12:10AM

Assigned to jb...@google.com.

ap...@google.com <ap...@google.com> #2Jan 19, 2021 07:55PM

Jeremy, is this still an issue? I think the problem was that you had two transitions targeting the same View for the same action (e.g. two Slide() transitions).

jb...@google.com <jb...@google.com> #3Jan 19, 2021 07:56PM

Marked as fixed.

I have a similar issue with plain AnimatorSet:

set.start()
set.pause()
set.setCurrentPlayTime(100)
set.setCurrentPlayTime(0)
set.setCurrentPlayTime(100)
set.resume()

doesn't play animation in resume().

jp...@gmail.com <jp...@gmail.com> #4Jan 19, 2021 08:11PM

Should clarify that if I filter out setCurrentPlayTime(0) (or replace it with setCurrentPlayTime(1)) it works well.

Also even with setCurrentPlayTime(0), onAnimationEnd is notified with correct delay (as if the animation has played).

Issue 175417675

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Issue summary

Comments

il...@google.com <il...@google.com> Jan 8, 2021 12:10AM

ap...@google.com <ap...@google.com> #2Jan 19, 2021 07:55PM

jb...@google.com <jb...@google.com> #3Jan 19, 2021 07:56PM

jp...@gmail.com <jp...@gmail.com> #4Jan 19, 2021 08:11PM

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