IssueTracker

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

commit 57ca221882695bd6a52549f4d9ea3b812e6fe87c
Author: Simon Schiller <simonschiller@users.noreply.github.com>
Date:   Mon Mar 22 16:09:30 2021

    [GH] [FragmentStrictMode] Detect <fragment> tag usage
   
    ## Proposed Changes
   
      - Detect `<fragment>` tag usage inside XML layouts
   
    ## Testing
   
    Test: See `FragmentStrictModeTest#detectFragmentTagUsage`
   
    ## Issues Fixed
   
    Fixes: 153738235
   
    This is an imported pull request from https://github.com/androidx/androidx/pull/141.
   
    Resolves #141
    Github-Pr-Head-Sha: 4ea052596e4341b9f11bcf335e2bc38045a91f19
    GitOrigin-RevId: 62e7487aa4874eef6bb556490e193717cf937251
    Change-Id: Iae48578e85e4e4897f806d7ade2e2a660adf9479

M       fragment/fragment/api/public_plus_experimental_current.txt
M       fragment/fragment/api/restricted_current.txt
M       fragment/fragment/src/androidTest/java/androidx/fragment/app/strictmode/FragmentStrictModeTest.kt
M       fragment/fragment/src/main/java/androidx/fragment/app/FragmentLayoutInflaterFactory.java
M       fragment/fragment/src/main/java/androidx/fragment/app/strictmode/FragmentStrictMode.java
A       fragment/fragment/src/main/java/androidx/fragment/app/strictmode/FragmentTagUsageViolation.java

https://android-review.googlesource.com/1649748

https://issuetracker.google.com/issues/176089197

You say that this is intended behaviour. Why? Please, explain.

This both animations has the same duration, but the exit animation blinks afterwards, no matter of functions call order (show() and hide()) within transaction.

1.3.0-alpha07 works without blinks.

It cannot be intended behavior. Because both fragment are actually playing enter and exit animations for respective fragments simultaneously.

So why it blinks? In my opinion current behavior (1.3.0-rc01) is totally incorrect.

Anyway, how should I run properly those animations for those fragments in order animation (simultaneous show and hide animation with the same duration) works correctly and no blink effect happens afterward?

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

commit 58875f65e854d5fd60a2b4db20516f868857bf7a
Author: Jeremy Woods <jbwoods@google.com>
Date:   Wed Jan 20 15:24:12 2021

    Ensure FragmentContainerView handles animators
   
    When removing views that have animators, the view system puts exiting
    views on top of entering views. FragmentContainerView was designed to
    reverse the drawing order for at least animations and until recently
    also handled animators.
   
    The old animation system needed to check to see if the view had an
    associated animation before considering it a disappearing view. The new
    system does not require such a check.
   
    RelNote: "Animators now appear in the proper order when using
    FragmentContainerView"
    Test: FragmentContainerViewTest
    Bug: 176089197
   
    Change-Id: Id9aa349b180cc2c22912efae3f2c44773ecb7126

M       fragment/fragment/src/androidTest/java/androidx/fragment/app/FragmentContainerViewTest.kt
M       fragment/fragment/src/main/java/androidx/fragment/app/FragmentContainerView.java

https://android-review.googlesource.com/1554933